TWI867590B - Light path folding element, camera module and electronic device - Google Patents

Abstract

A light path folding element includes a first surface, a second surface, a first reflecting surface and a second reflecting surface. Light travels from the first surface into the light path folding element. The second surface is disposed relative to the first surface on a first direction, and is parallel to the first surface, and the first direction is perpendicular to the first surface. The first reflecting surface connects the first surface and the second surface, and forms an acute angle with the first surface. Light is internally reflected by the first reflecting surface, and internally reflected again by the second reflecting surface. The light path folding element further includes a light blocking structure, which is extended from one of the first surface and the second surface to an inside of the light path folding element. When the specific condition is satisfied, it is favorable for covering the stray light from specific angle.

Description

Optical path turning element, camera module and electronic device

The present disclosure relates to an optical path bending element and a camera module, and in particular to an optical path bending element and a camera module applied to a portable electronic device.

In recent years, portable electronic devices have developed rapidly, such as smart electronic devices and tablet computers, which have become part of modern people's lives, and the camera modules installed on portable electronic devices have also developed rapidly. However, as technology becomes more and more advanced, users have higher and higher requirements for the image quality of camera modules. Therefore, developing a camera module that can improve image quality has become an important and urgent problem in the industry.

The present disclosure provides an optical path bending element, a camera module and an electronic device, which, by setting a light shielding structure on the optical path bending element, transmits light along a specific path and effectively shields stray light at a specific angle to improve imaging quality.

According to an embodiment of the present disclosure, a light path deflecting element is provided, comprising a first surface, a second surface, a first reflective surface and a second reflective surface. Light is incident on the light path deflecting element from the first surface. The second surface and the first surface are arranged correspondingly in a first direction and are parallel to each other, and the first direction is perpendicular to the first surface. The first reflective surface connects the first surface and the second surface, and forms an acute angle with the first surface, and the light undergoes an internal reflection by the first reflective surface. The light undergoes another internal reflection by the second reflective surface. The light path deflecting element further comprises a first shading structure and a second shading structure, the first shading structure extends from the first surface to the interior of the light path deflecting element, and the second shading structure extends from the second surface to the interior of the light path deflecting element. The distance between the first surface and the second surface along the first direction is H, the center extension depth of the first shading structure along the first direction is h1, the center extension depth of the second shading structure along the first direction is h2, and the center distance between the first shading structure and the second shading structure along the direction perpendicular to the first direction is Ls, which satisfies the following conditions: 0 ≤ tanθ ≤ 0.45, where tanθ = (h1+h2-H)/Ls.

According to the optical path turning element of the embodiment described in the previous paragraph, the distance between the first surface and the second surface along the first direction is H, and the center extension depth of the first light shielding structure along the first direction is h1, which meets the following condition: 0.45 ≤ h1/H ≤ 0.80.

According to the optical path turning element of the embodiment described in the previous paragraph, the distance between the first surface and the second surface along the first direction is H, and the center extension depth of the second light shielding structure along the first direction is h2, which meets the following condition: 0.45 ≤ h2/H ≤ 0.80.

According to the optical path deflection element of the embodiment described in the previous paragraph, the angle of the sharp angle is α, which satisfies the following conditions: 10 degrees < α < 40 degrees. Furthermore, the following conditions can be satisfied: 15 degrees < α < 37 degrees.

According to the optical path turning element of the embodiment described in the previous paragraph, the first reflecting surface and the second reflecting surface are arranged correspondingly in a vertical first direction and are parallel to each other.

According to the light path bending element of the embodiment described in the previous paragraph, the first light shielding structure and the second light shielding structure are respectively gradually contracted from the first surface and the second surface along the first direction toward the inside of the light path bending element.

According to the light path bending element of the embodiment described in the preceding paragraph, the refractive index of the light path bending element is N, which satisfies the following condition: 1.45 < N < 2.1.

According to the light path bending element of the embodiment described in the previous paragraph, the light path bending element may further include a third light shielding structure, and the third light shielding structure is disposed on an edge of the first surface, and the edge is close to the first reflective surface.

According to the optical path turning element of the embodiment described in the previous paragraph, the distance from the center of the third light shielding structure to the edge of the first surface along the perpendicular first direction is D3, which satisfies the following condition: 0.4 mm < D3 < 2.3 mm.

In the optical path bending element according to the embodiment described in the preceding paragraph, at least one of the first light shielding structure and the second light shielding structure comprises a plurality of protrusions, and the protrusions are disposed toward the interior of the optical path bending element.

According to an embodiment of the present disclosure, a light path deflecting element is provided, comprising a first surface, a second surface, a first reflection surface and a second reflection surface. Light is incident on the light path deflecting element from the first surface. The second surface and the first surface are arranged correspondingly in a first direction and are parallel to each other, and the first direction is perpendicular to the first surface. The first reflection surface connects the first surface and the second surface, and forms an acute angle with the first surface, and the light undergoes an internal reflection by the first reflection surface. The light undergoes another internal reflection by the second reflection surface. The light path deflecting element further comprises a first light shading structure, a second light shading structure and a third light shading structure, the first light shading structure extends from the first surface to the interior of the light path deflecting element, the second light shading structure extends from the second surface to the interior of the light path deflecting element, and the third light shading structure is arranged at an edge of the first surface, and the edge is close to the first reflection surface. The distance between the first surface and the second surface along the first direction is H, the center extension depth of the first shading structure along the first direction is h1, the center extension depth of the second shading structure along the first direction is h2, the center distance between the first shading structure and the second shading structure along the direction perpendicular to the first direction is Ls, and the distance from the center of the third shading structure to the edge of the first surface along the direction perpendicular to the first direction is D3, which satisfies the following conditions: -0.2 ≤ tanθ ≤ 0.55, where tanθ = (h1+h2-H)/Ls; and 0.4 mm ＜ D3 ＜ 2.3 mm.

According to the optical path turning element of the embodiment described in the previous paragraph, the distance between the first surface and the second surface along the first direction is H, and the center extension depth of the first light shielding structure along the first direction is h1, which meets the following condition: 0.45 ≤ h1/H ≤ 0.80.

According to the optical path turning element of the embodiment described in the previous paragraph, the distance between the first surface and the second surface along the first direction is H, and the center extension depth of the second light shielding structure along the first direction is h2, which meets the following condition: 0.45 ≤ h2/H ≤ 0.80.

According to the optical path deflection element of the embodiment described in the previous paragraph, the distance from the center of the third light shielding structure to the edge of the first surface along the perpendicular first direction is D3, which satisfies the following conditions: 0.6 mm < D3 < 2.1 mm. Furthermore, the following conditions can be satisfied: 0.9 mm < D3 < 2.0 mm.

According to the optical path turning element of the embodiment described in the previous paragraph, the first reflecting surface and the second reflecting surface are arranged correspondingly in a vertical first direction and are parallel to each other.

According to the light path bending element of the embodiment described in the previous paragraph, the first light shielding structure and the second light shielding structure are respectively gradually contracted from the first surface and the second surface along the first direction toward the inside of the light path bending element.

According to the light path bending element of the embodiment described in the preceding paragraph, the refractive index of the light path bending element is N, which satisfies the following condition: 1.45 < N < 2.1.

In the optical path bending element according to the embodiment described in the preceding paragraph, at least one of the first light shielding structure and the second light shielding structure comprises a plurality of protrusions, and the protrusions are disposed toward the interior of the optical path bending element.

According to an embodiment of the present disclosure, a light path deflecting element is provided, comprising a first surface, a second surface, a first reflection surface and a second reflection surface. Light is incident on the light path deflecting element from the first surface. The second surface and the first surface are arranged correspondingly in a first direction and are parallel to each other, and the first direction is perpendicular to the first surface. The first reflection surface connects the first surface and the second surface, and forms an acute angle with the first surface, and the light undergoes an internal reflection by the first reflection surface. The light undergoes another internal reflection by the second reflection surface. The light path deflecting element further comprises a shading structure, and the shading structure extends from at least one of the first surface and the second surface to the interior of the light path deflecting element. The distance between the first surface and the second surface along the first direction is H, and the central extension depth of the shading structure along the first direction is h, which satisfies the following conditions: 0.45 ≤ h/H ≤ 0.80.

According to the optical path bending element of the embodiment described in the preceding paragraph, the distance between the first surface and the second surface along the first direction is H, and the central extension depth of the light shielding structure along the first direction is h, which satisfies the following conditions: 0.49 ≤ h/H ≤ 0.80. Furthermore, the following conditions can be satisfied: 0.53 ≤ h/H ≤ 0.78. In addition, the following conditions can be satisfied: 0.57 ≤ h/H ≤ 0.75.

According to the optical path deflection element of the embodiment described in the previous paragraph, the angle of the sharp angle is α, which satisfies the following conditions: 10 degrees < α < 40 degrees. Furthermore, the following conditions can be satisfied: 15 degrees < α < 37 degrees.

According to the light path bending element of the embodiment described in the preceding paragraph, the refractive index of the light path bending element is N, which satisfies the following condition: 1.45 < N < 2.1.

In the optical path bending element according to the embodiment described in the previous paragraph, the light shielding structure may include a plurality of protrusions, and the protrusions are arranged toward the inside of the optical path bending element.

According to the light path bending element of the embodiment described in the previous paragraph, the light shielding structure gradually shrinks from the first surface and the second surface, wherein at least one of the surfaces is gradually shrinking toward the inside of the light path bending element along the first direction.

According to an embodiment of the present disclosure, a camera module is provided, comprising an imaging lens, an electronic photosensitive element, and an optical path deflecting element of the aforementioned embodiment. The imaging lens is disposed corresponding to a first surface of the optical path deflecting element, and the optical path deflecting element is used to deflect an imaging light of the imaging lens to the electronic photosensitive element.

According to an embodiment of the present disclosure, an electronic device is provided, including the camera module of the aforementioned embodiment.

According to an embodiment of the present disclosure, a light path deflecting element is provided, comprising a first surface, a second surface, a first reflection surface and a second reflection surface. Light is incident on the light path deflecting element from the first surface. The second surface and the first surface are arranged correspondingly in a first direction and are parallel to each other, and the first direction is perpendicular to the first surface. The first reflection surface connects the first surface and the second surface, and forms an acute angle with the first surface, and the light undergoes an internal reflection by the first reflection surface. The light undergoes another internal reflection by the second reflection surface. The light path deflecting element further comprises a shading structure, and the shading structure extends from at least one of the first surface and the second surface to the interior of the light path deflecting element. The shading structure comprises a plurality of protrusions, and the protrusions are arranged toward the interior of the light path deflecting element, and the height of each protrusion is T, and the width of each protrusion is W, which satisfies the following conditions: 0.1 ＜ T/W ＜ 3.5.

According to the optical path turning element of the embodiment described in the previous paragraph, the distance between the first surface and the second surface along the first direction is H, and the central extension depth of the shading structure along the first direction is h, which meets the following condition: 0.45 ≤ h/H ≤ 0.80.

According to the light path bending element of the embodiment described in the preceding paragraph, the refractive index of the light path bending element is N, which satisfies the following condition: 1.45 < N < 2.1.

According to the optical path deflection element of the embodiment described in the previous paragraph, the angle of the sharp angle is α, which satisfies the following conditions: 10 degrees < α < 40 degrees. In addition, it can satisfy the following conditions: 15 degrees < α < 37 degrees.

According to the optical path deflection element of the embodiment described in the previous paragraph, the height of each protrusion is T, and the width of each protrusion is W, which satisfies the following conditions: 0.2 < T/W < 2.2. In addition, it can satisfy the following conditions: 0.25 < T/W < 1.05.

One aspect of the present disclosure provides a light path deflecting element, comprising a first surface, a second surface, a first reflective surface and a second reflective surface. Light is incident on the light path deflecting element from the first surface. The second surface and the first surface are arranged correspondingly in a first direction and are parallel to each other, and the first direction is perpendicular to the first surface. The first reflective surface connects the first surface and the second surface, and forms an acute angle with the first surface, and the light undergoes an internal reflection by the first reflective surface. The light undergoes another internal reflection by the second reflective surface. The light path deflecting element further comprises two shading structures, namely a first shading structure and a second shading structure, the first shading structure extends from the first surface to the interior of the light path deflecting element, and the second shading structure extends from the second surface to the interior of the light path deflecting element. The distance between the first surface and the second surface along the first direction is H, the center extension depth of the first light shielding structure along the first direction is h1, the center extension depth of the second light shielding structure along the first direction is h2, and the center distance between the first light shielding structure and the second light shielding structure along the perpendicular first direction is Ls, which meets the following conditions: 0 ≤ tanθ ≤ 0.45, where tanθ = (h1+h2-H)/Ls. Thus, the present disclosure provides a light path bending element that can make light reflect internally multiple times, and through the arrangement of the first light shielding structure and the second light shielding structure, the light is transmitted along a specific path. Furthermore, meeting the above-mentioned range of conditions can provide a larger range of light shielding inside the light path bending element, which can effectively shield stray light at a specific angle, and the above-mentioned structural configuration can maintain the stability of the light path in a two-way shielding manner.

Specifically, the light path turning element can be made of glass material or plastic material. Light is incident from the first surface to the interior of the light path turning element, and is internally reflected at the first reflection surface and the second reflection surface. The first surface and the second surface can reflect and transmit according to different design requirements, thereby achieving the effect of light path turning. The first shading structure and the second shading structure can be shading plates, shading sheets, shading coatings, anti-reflective film layers, etc., but are not limited to these. In addition, the first shading structure extends from the first surface toward the second surface toward the interior of the light path turning element, and the second shading structure extends from the second surface toward the first surface toward the interior of the light path turning element.

The distance between the first surface and the second surface along the first direction is H, and the center extension depth of the first light shielding structure along the first direction is h1, which meets the following conditions: 0.45 ≤ h1/H ≤ 0.80. By meeting the light shielding range of a specific depth, the light shielding efficiency can be effectively improved.

The distance between the first surface and the second surface along the first direction is H, and the center extension depth of the second light shielding structure along the first direction is h2, which meets the following conditions: 0.45 ≤ h2/H ≤ 0.80. By meeting the light shielding range of a specific depth, the light shielding efficiency can be effectively improved.

The angle of the aforementioned sharp angle is α, which satisfies the following conditions: 10 degrees < α < 40 degrees. This helps to reduce the volume of the optical path bending element. Furthermore, the following conditions can be met: 15 degrees < α < 37 degrees. This can further control the path of light inside the optical path bending element.

The first reflecting surface and the second reflecting surface are arranged correspondingly in a vertical first direction and are parallel to each other, thereby improving the manufacturing accuracy of the light path bending element.

The first light shielding structure and the second light shielding structure are respectively gradually contracted from the first surface and the second surface along the first direction toward the inside of the light path bending element, thereby providing the feasibility of mass production.

The refractive index of the optical path bending element is N, which satisfies the following conditions: 1.45 < N < 2.1. This improves the stability of the internal reflection of the light.

The light path bending element may further include a third light shielding structure, which is disposed at an edge of the first surface and close to the first reflecting surface, thereby helping to control the amount of light entering the light path bending element.

The distance from the center of the third light shielding structure to the edge of the first surface along the perpendicular first direction is D3, which satisfies the following condition: 0.4 mm < D3 < 2.3 mm. This can prevent incident light at a large angle from entering the light path deflecting element from the first surface.

At least one of the first light shielding structure and the second light shielding structure includes a plurality of protrusions, and the protrusions are arranged toward the inside of the light path bending element, thereby effectively reducing the probability of non-imaging light being generated.

One aspect of the present disclosure provides a light path deflecting element, comprising a first surface, a second surface, a first reflection surface and a second reflection surface. Light is incident on the light path deflecting element from the first surface. The second surface and the first surface are arranged correspondingly in a first direction and are parallel to each other, and the first direction is perpendicular to the first surface. The first reflection surface connects the first surface and the second surface, and forms an acute angle with the first surface, and the light undergoes an internal reflection by the first reflection surface. The light undergoes another internal reflection by the second reflection surface. The light path deflecting element further comprises a first light shading structure, a second light shading structure and a third light shading structure, the first light shading structure extends from the first surface to the interior of the light path deflecting element, the second light shading structure extends from the second surface to the interior of the light path deflecting element, and the third light shading structure is arranged at an edge of the first surface, and the edge is close to the first reflection surface. The distance between the first surface and the second surface along the first direction is H, the center extension depth of the first light shielding structure along the first direction is h1, the center extension depth of the second light shielding structure along the first direction is h2, the center distance between the first light shielding structure and the second light shielding structure along the first direction perpendicular to the first direction is Ls, and the distance from the center of the third light shielding structure to the edge of the first surface along the first direction perpendicular to the first direction is D3, which meets the following conditions: -0.2 ≤ tanθ ≤ 0.55, where tanθ = (h1+h2-H)/Ls; and 0.4 mm < D3 < 2.3 mm. Thus, the present disclosure provides a light path deflection element that can make light undergo multiple internal reflections, and through the setting of the light shielding structure, the light is transmitted along a specific path. Furthermore, satisfying the aforementioned conditions can prevent incident light at a large angle from entering the light path bending element from the first surface, and provide a larger range of shading inside the light path bending element, which can effectively shield stray light at a specific angle and maintain the stability of the light path in a two-way shielding manner.

The distance between the first surface and the second surface along the first direction is H, and the central extension depth of the first light shielding structure along the first direction is h1, which meets the following conditions: 0.45 ≤ h1/H ≤ 0.80. In this way, the light shielding range of a specific depth is met, and the light shielding efficiency is effectively improved.

The distance between the first surface and the second surface along the first direction is H, and the central extension depth of the second light shielding structure along the first direction is h2, which meets the following conditions: 0.45 ≤ h2/H ≤ 0.80. In this way, the light shielding range of a specific depth is met, and the light shielding efficiency is effectively improved.

The distance from the center of the third light-shielding structure to the edge of the first surface along the perpendicular first direction is D3, which satisfies the following condition: 0.6 mm < D3 < 2.1 mm. In this way, incident light at a specific peripheral angle can be further shielded, thereby improving the optical quality. Furthermore, the following condition can be met: 0.9 mm < D3 < 2.0 mm. In this way, the optical quality of the product can be maintained and the production cost of the product can be reduced.

The first reflecting surface and the second reflecting surface are arranged correspondingly in a vertical first direction and are parallel to each other, thereby improving the manufacturing accuracy of the light path bending element.

The first light shielding structure and the second light shielding structure are respectively gradually contracted from the first surface and the second surface along the first direction toward the inside of the light path bending element, thereby providing the feasibility of mass production.

The refractive index of the optical path bending element is N, which satisfies the following conditions: 1.45 < N < 2.1. This improves the stability of the internal reflection of the light.

At least one of the first light shielding structure and the second light shielding structure includes a plurality of protrusions, and the protrusions are arranged toward the inside of the light path bending element, thereby effectively reducing the probability of non-imaging light being generated.

One aspect of the present disclosure provides a light path deflecting element, comprising a first surface, a second surface, a first reflection surface and a second reflection surface. Light is incident on the light path deflecting element from the first surface. The second surface and the first surface are arranged correspondingly in a first direction and are parallel to each other, and the first direction is perpendicular to the first surface. The first reflection surface connects the first surface and the second surface and forms an acute angle with the first surface, and the light undergoes an internal reflection by the first reflection surface. The light undergoes another internal reflection by the second reflection surface. The light path deflecting element further comprises a shading structure, and the shading structure extends from at least one of the first surface and the second surface to the interior of the light path deflecting element. The distance between the first surface and the second surface along the first direction is H, and the central extension depth of the shading structure along the first direction is h, which satisfies the following conditions: 0.45 ≤ h/H ≤ 0.80. Thus, the present disclosure provides a light path bending element that can make light undergo multiple internal reflections, and through the provision of a light shielding structure, the light is transmitted along a specific path. Furthermore, satisfying the aforementioned range of conditions can provide a larger range of light shielding inside the light path bending element, effectively shielding stray light at a specific angle, and improving the manufacturability of the light path bending element.

Furthermore, the following conditions can be met: 0.49 ≤ h/H ≤ 0.80. Thus, a wider range of light shielding can further improve the optical quality. In addition, the following conditions can be met: 0.53 ≤ h/H ≤ 0.78. Thus, the dimensional accuracy of the light shielding structure and higher manufacturing efficiency can be taken into account. Furthermore, the following conditions can be met: 0.57 ≤ h/H ≤ 0.75. Thus, the structural integrity of the light shielding structure is maintained.

The angle of the aforementioned sharp angle is α, which satisfies the following conditions: 10 degrees < α < 40 degrees. This helps to reduce the size of the optical path bending element. Furthermore, the following conditions can be met: 15 degrees < α < 37 degrees. This can further control the path of light inside the optical path bending element.

The refractive index of the optical path bending element is N, which satisfies the following conditions: 1.45 < N < 2.1. This improves the stability of the internal reflection of the light.

The light shielding structure may include a plurality of protrusions, and the protrusions are arranged toward the inside of the light path deflection element, thereby effectively reducing the probability of non-imaging light being generated.

The light shielding structure gradually shrinks from at least one of the first surface and the second surface along the first direction toward the inside of the light path deflecting element, thereby providing feasibility of mass production.

One aspect of the present disclosure provides a light path deflecting element, comprising a first surface, a second surface, a first reflection surface and a second reflection surface. Light is incident on the light path deflecting element from the first surface. The second surface and the first surface are arranged correspondingly in a first direction and are parallel to each other, and the first direction is perpendicular to the first surface. The first reflection surface connects the first surface and the second surface, and forms an acute angle with the first surface, and the light undergoes an internal reflection by the first reflection surface. The light undergoes another internal reflection by the second reflection surface. The light path deflecting element further comprises a shading structure, and the shading structure extends from at least one of the first surface and the second surface to the interior of the light path deflecting element. The shading structure comprises a plurality of protrusions, and the protrusions are arranged toward the interior of the light path deflecting element, the height of each protrusion is T, and the width of each protrusion is W, which satisfies the following conditions: 0.1 ＜ T/W ＜ 3.5. Thereby, the probability of non-imaging light being generated can be effectively reduced, and the manufacturability of the light shielding structure can be improved.

The distance between the first surface and the second surface along the first direction is H, and the central extension depth of the light shielding structure along the first direction is h, which meets the following conditions: 0.45 ≤ h/H ≤ 0.80. By meeting the light shielding range of a specific depth, the light shielding efficiency can be effectively improved.

The refractive index of the optical path bending element is N, which satisfies the following conditions: 1.45 < N < 2.1. This improves the stability of the internal reflection of the light.

The angle of the sharp angle is α, which satisfies the following conditions: 10 degrees < α < 40 degrees. This helps to reduce the size of the optical path bending element. Furthermore, the following conditions can be met: 15 degrees < α < 37 degrees. This can further control the path of light inside the optical path bending element.

The height of each protrusion is T, and the width of each protrusion is W, which meets the following conditions: 0.2 < T/W < 2.2. This can effectively reduce the probability of non-imaging light generation and improve production efficiency. Furthermore, the following conditions can be met: 0.25 < T/W < 1.05.

One aspect of the present disclosure provides a camera module, comprising an imaging lens, an electronic photosensitive element, and the optical path deflecting element of the above aspect. The imaging lens is disposed corresponding to the first surface of the optical path deflecting element, and the optical path deflecting element is used to deflect an imaging light of the imaging lens to the electronic photosensitive element.

One aspect of the present disclosure provides an electronic device, comprising the camera module of the aforementioned aspect.

<First embodiment>

Please refer to FIG. 1A, which shows a schematic diagram of a camera module 100 according to a first embodiment of the present disclosure. As can be seen from FIG. 1A, the camera module 100 includes an imaging lens 110, an electronic photosensitive element 140, and an optical path deflecting element 120. The electronic photosensitive element 140 is disposed on an imaging surface 130 of the imaging lens 110, and the optical path deflecting element 120 is disposed on the image side of the imaging lens 110 and between the imaging lens 110 and the electronic photosensitive element 140. The imaging lens 110 is disposed corresponding to a first surface 121 of the optical path deflecting element 120, and the optical path deflecting element 120 is used to deflect the imaging light of the imaging lens 110 to the electronic photosensitive element 140. The imaging lens 110 may include a lens barrel 111 and at least one optical element 112, wherein the optical element 112 is disposed in the lens barrel 111. The optical element 112 may be a lens, a light shielding element, a fixing ring, etc., which will not be described in detail herein. In addition, as can be seen from FIG. 1A, the camera module 100 may further include a filter element 150, which is located between the optical path bending element 120 and the imaging surface 130, but the present disclosure is not limited thereto.

Please refer to FIG. 1B and FIG. 1C, wherein FIG. 1B is a schematic diagram of the first light shielding structure 1201 and the second light shielding structure 1202 of the light path bending element 120 in the first embodiment according to FIG. 1A, and FIG. 1C is a three-dimensional schematic diagram of the light path bending element 120 in the first embodiment according to FIG. 1A. As can be seen from FIG. 1A, FIG. 1B and FIG. 1C, the light path bending element 120 includes a first surface 121, a second surface 122, a first reflection surface 123 and a second reflection surface 124. Light is incident on the light path bending element 120 from the first surface 121. The second surface 122 and the first surface 121 are arranged correspondingly in the first direction X1 and are parallel to each other, and the first direction X1 is perpendicular to the first surface 121. The first reflective surface 123 connects the first surface 121 and the second surface 122, and forms an acute angle with the first surface 121. The light undergoes an internal reflection through the first reflective surface 123. The light undergoes another internal reflection through the second reflective surface 124. In this way, the imaging light enters the electronic photosensitive element 140. Specifically, the first reflective surface 123 and the second reflective surface 124 are correspondingly arranged in a direction perpendicular to the first direction X1 and are parallel to each other. The refractive index of the optical path bending element 120 is N, which satisfies the following conditions: 1.45 < N < 2.1. In the first embodiment, the refractive index of the optical path bending element 120 is 1.52, but the present disclosure is not limited thereto.

The light path bending element 120 includes two light shielding structures, namely a first light shielding structure 1201 and a second light shielding structure 1202. The first light shielding structure 1201 extends from the first surface 121 to the inside of the light path bending element 120, and the second light shielding structure 1202 extends from the second surface 122 to the inside of the light path bending element 120; that is, the first light shielding structure 1201 extends from the first surface 121 to the inside of the light path bending element 120 in the direction of the second surface 122, and the second light shielding structure 1202 extends from the second surface 122 to the inside of the light path bending element 120 in the direction of the first surface 121. In the first embodiment, the first light shielding structure 1201 and the second light shielding structure 1202 are light shielding plates embedded in the light path bending element 120, but the present disclosure is not limited thereto.

The first light shielding structure 1201 and the second light shielding structure 1202 respectively include a plurality of protrusions 12011 and 12021, and the protrusions 12011 and 12021 are disposed toward the inside of the light path bending element 120. Specifically, the first light shielding structure 1201 and the second light shielding structure 1202 respectively have a thickness, the center of which is concave relative to the two ends, and the protrusions 12011 and 12021 are respectively disposed on the surface of the concave part and face toward the inside of the light path bending element 120.

Furthermore, the optical path bending element 120 may further include a third light shielding structure 1203, which is disposed on an edge of the first surface 121, and the edge is close to the first reflective surface 123. In the first embodiment, the third light shielding structure 1203 is a light shielding sheet, which is disposed on the edge of the first surface 121 close to the first reflective surface 123.

As can be seen from Figure 1B, in the first embodiment, the distance between the first surface 121 and the second surface 122 along the first direction X1 is H, the center extension depth of the first light shading structure 1201 along the first direction X1 is h1, the center extension depth of the second light shading structure 1202 along the first direction X1 is h2, the center distance between the first light shading structure 1201 and the second light shading structure 1202 along the first direction X1 is Ls, the angle of the sharp angle is α, the distance from the center of the third light shading structure 1203 to the edge of the first surface 121 along the first direction X1 is D3, the height of the protrusions 12011 and 12021 is T, and the width of the protrusions 12011 and 12021 is W, which are respectively the values in Table 1 below. Table 1 - First embodiment H (mm) 2.385 h1/H 0.516 h1 (mm) 1.23 h2/H 0.516 h2 (mm) 1.23 α (degrees) 29 Ls (mm) 3.5 D3 (mm) 1.049 tanθ 0.021 T (mm) 0.08 W (mm) 0.16 T/W 0.5

In the above Table 1, tanθ = (h1+h2-H)/Ls.

<Second embodiment>

Please refer to FIG. 2A, which shows a schematic diagram of a camera module 200 according to a second embodiment of the present disclosure. As can be seen from FIG. 2A, the camera module 200 includes an imaging lens 210, an electronic photosensitive element 240, and an optical path deflecting element 220. The electronic photosensitive element 240 is disposed on an imaging surface 230 of the imaging lens 210, and the optical path deflecting element 220 is disposed on the image side of the imaging lens 210 and between the imaging lens 210 and the electronic photosensitive element 240. The imaging lens 210 is disposed corresponding to the first surface 221 of the optical path deflecting element 220, and the optical path deflecting element 220 is used to deflect the imaging light of the imaging lens 210 to the electronic photosensitive element 240. The imaging lens 210 may include a lens barrel 211 and at least one optical element 212, wherein the optical element 212 is disposed in the lens barrel 211, and the optical element 212 may be a lens, a light shielding element, a fixing ring, etc., which will not be described in detail herein. In addition, as can be seen from FIG. 2A, the camera module 200 may further include a filter element 250, which is located between the optical path bending element 220 and the imaging surface 230, but the present disclosure is not limited thereto.

Please refer to FIG. 2B and FIG. 2C, wherein FIG. 2B is a schematic diagram of the first light shielding structure 2201 and the second light shielding structure 2202 of the light path bending element 220 in the second embodiment according to FIG. 2A, and FIG. 2C is a three-dimensional schematic diagram of the light path bending element 220 in the second embodiment according to FIG. 2A. As can be seen from FIG. 2A, FIG. 2B and FIG. 2C, the light path bending element 220 includes a first surface 221, a second surface 222, a first reflection surface 223 and a second reflection surface 224. Light is incident on the light path bending element 220 from the first surface 221. The second surface 222 and the first surface 221 are arranged correspondingly in the first direction X1 and are parallel to each other, and the first direction X1 is perpendicular to the first surface 221. The first reflective surface 223 connects the first surface 221 and the second surface 222, and forms an acute angle with the first surface 221. The light undergoes an internal reflection through the first reflective surface 223. The light undergoes another internal reflection through the second reflective surface 224. In this way, the imaging light enters the electronic photosensitive element 240. Specifically, the first reflective surface 223 and the second reflective surface 224 are correspondingly arranged in a direction perpendicular to the first direction X1 and are parallel to each other. The refractive index of the optical path bending element 220 is N, which satisfies the following conditions: 1.45 < N < 2.1. In the second embodiment, the refractive index of the optical path bending element 220 is 1.78, but the present disclosure is not limited thereto.

The light path bending element 220 includes two light shielding structures, namely a first light shielding structure 2201 and a second light shielding structure 2202. The first light shielding structure 2201 extends from the first surface 221 to the inside of the light path bending element 220, and the second light shielding structure 2202 extends from the second surface 222 to the inside of the light path bending element 220; that is, the first light shielding structure 2201 extends from the first surface 221 to the inside of the light path bending element 220 in the direction of the second surface 222, and the second light shielding structure 2202 extends from the second surface 222 to the direction of the first surface 221 to the inside of the light path bending element 220. In the second embodiment, the first light shielding structure 2201 and the second light shielding structure 2202 are light shielding plates embedded in the light path bending element 220, but the present disclosure is not limited thereto. Specifically, the first light shielding structure 2201 and the second light shielding structure 2202 are both gradually concave from two ends to the center.

Furthermore, the light path bending element 220 may further include a third light shielding structure 2203, which is disposed on an edge of the first surface 221, and the edge is close to the first reflective surface 223. In the second embodiment, the third light shielding structure 2203 is a light shielding sheet, which is disposed on the edge of the first surface 221 close to the first reflective surface 223.

As can be seen from Figure 2B, in the second embodiment, the distance between the first surface 221 and the second surface 222 along the first direction X1 is H, the center extension depth of the first light shading structure 2201 along the first direction X1 is h1, the center extension depth of the second light shading structure 2202 along the first direction X1 is h2, the center distance between the first light shading structure 2201 and the second light shading structure 2202 along the first direction X1 is Ls, the angle of the sharp angle is α, and the distance from the center of the third light shading structure 2203 along the first direction X1 to the edge of the first surface 221 is D3, which are the values of the following Table 2 respectively. Table 2 - Second Embodiment H (mm) 2.385 h1/H 0.348 h1 (mm) 0.83 h2/H 0.451 h2 (mm) 1.075 α (degrees) 29 Ls (mm) 3.5 D3 (mm) 1.849 tanθ -0.137

In the above Table 2, tanθ = (h1+h2-H)/Ls.

<Third Embodiment>

Please refer to FIG. 3A, which shows a schematic diagram of a camera module 300 according to a third embodiment of the present disclosure. As can be seen from FIG. 3A, the camera module 300 includes an imaging lens 310, an electronic photosensitive element 340, and an optical path bending element 320. The electronic photosensitive element 340 is disposed on an imaging surface 330 of the imaging lens 310, and the optical path bending element 320 is disposed on the image side of the imaging lens 310. The imaging lens 310 is disposed corresponding to the first surface 321 of the optical path bending element 320, and the optical path bending element 320 is used to bend the imaging light of the imaging lens 310 to the electronic photosensitive element 340. The imaging lens 310 may include a lens barrel 311 and at least one optical element 312, wherein the optical element 312 is disposed in the lens barrel 311. The optical element 312 may be a lens, a light shielding element, a fixing ring, etc., which will not be described in detail herein. In addition, as can be seen from FIG. 3A, the camera module 300 may further include a filter element 350, which is located between the optical path bending element 320 and the imaging surface 330, but the present disclosure is not limited thereto.

Please refer to FIG. 3B , which is a schematic diagram of a light shielding structure 3200 of the light path bending element 320 in the third embodiment according to FIG. 3A . As can be seen from FIG. 3A and FIG. 3B , the light path bending element 320 includes a first surface 321, a second surface 322, a first reflection surface 323, and a second reflection surface 324. A light ray is incident on the light path bending element 320 from the first surface 321. The second surface 322 and the first surface 321 are arranged correspondingly in the first direction X1 and are parallel to each other, and the first direction X1 is perpendicular to the first surface 321. The first reflection surface 323 connects the first surface 321 and the second surface 322, and forms an acute angle with the first surface 321, and the light ray undergoes an internal reflection through the first reflection surface 323. The light ray undergoes another internal reflection through the second reflection surface 324. Thereby, the imaging light enters the electronic photosensitive element 340. Specifically, the refractive index of the light path bending element 320 is N, which satisfies the following condition: 1.45 < N < 2.1. In the third embodiment, the refractive index of the light path bending element 320 is 2.01, but the present disclosure is not limited thereto.

The light path bending element 320 includes a shading structure 3200, which extends from at least one of the first surface 321 and the second surface 322 toward the interior of the light path bending element 320; specifically, in the third embodiment, the shading structure 3200 extends from the second surface 322 toward the interior of the light path bending element 320, and is a shading sheet buried in the light path bending element 320, but the present disclosure is not limited to this.

The light shielding structure 3200 includes a plurality of protrusions 32001 , and the protrusions 32001 are disposed toward the inside of the light path bending element 320 .

As can be seen from Figure 3B, in the third embodiment, the distance between the first surface 321 and the second surface 322 along the first direction X1 is H, the center extension depth of the shading structure 3200 along the first direction X1 is h, the angle of the sharp angle is α, the height of the protrusion 32001 is T, and the width of the protrusion 32001 is W, which are respectively the values of the following Table 3. Table 3 - Third embodiment H (mm) 6.418 h/H 0.623 h (mm) 4 α (degrees) 30 T (mm) 0.16 W (mm) 0.40 T/W 0.4

<Fourth embodiment>

Please refer to FIG. 4A, which shows a schematic diagram of a camera module 400 according to a fourth embodiment of the present disclosure. As can be seen from FIG. 4A, the camera module 400 includes an imaging lens 410, an electronic photosensitive element 440, and an optical path deflecting element 420. The electronic photosensitive element 440 is disposed on an imaging surface 430 of the imaging lens 410, and the optical path deflecting element 420 is disposed on the image side of the imaging lens 410 and between the imaging lens 410 and the electronic photosensitive element 440. The imaging lens 410 is disposed corresponding to the first surface 421 of the optical path deflecting element 420, and the optical path deflecting element 420 is used to deflect the imaging light of the imaging lens 410 to the electronic photosensitive element 440. The imaging lens 410 may include a lens barrel 411 and at least one optical element 412, wherein the optical element 412 is disposed in the lens barrel 411, and the optical element 412 may be a lens, a light shielding element, a fixing ring, etc., which will not be described in detail herein. In addition, as can be seen from FIG. 4A, the camera module 400 may further include a filter element 450, which is located between the optical path bending element 420 and the imaging surface 430, but the present disclosure is not limited thereto.

Please refer to FIG. 4B and FIG. 4C, wherein FIG. 4B is a schematic diagram of the first light shielding structure 4201 and the second light shielding structure 4202 of the light path bending element 420 in the fourth embodiment according to FIG. 4A, and FIG. 4C is a three-dimensional schematic diagram of the light path bending element 420 in the fourth embodiment according to FIG. 4A. As can be seen from FIG. 4A, FIG. 4B and FIG. 4C, the light path bending element 420 includes a first surface 421, a second surface 422, a first reflection surface 423 and a second reflection surface 424. Light is incident on the light path bending element 420 from the first surface 421. The second surface 422 and the first surface 421 are arranged correspondingly in the first direction X1 and are parallel to each other, and the first direction X1 is perpendicular to the first surface 421. The first reflective surface 423 connects the first surface 421 and the second surface 422, and forms an acute angle with the first surface 421. The light undergoes an internal reflection through the first reflective surface 423. The light undergoes another internal reflection through the second reflective surface 424. In this way, the imaging light enters the electronic photosensitive element 440. Specifically, the first reflective surface 423 and the second reflective surface 424 are correspondingly arranged in a direction perpendicular to the first direction X1 and are parallel to each other. The refractive index of the optical path bending element 420 is N, which satisfies the following conditions: 1.45 < N < 2.1. In the fourth embodiment, the refractive index of the optical path bending element 420 is 1.54, but the present disclosure is not limited thereto.

The light path bending element 420 includes two light shielding structures, namely a first light shielding structure 4201 and a second light shielding structure 4202. The first light shielding structure 4201 extends from the first surface 421 to the inside of the light path bending element 420, and the second light shielding structure 4202 extends from the second surface 422 to the inside of the light path bending element 420; that is, the first light shielding structure 4201 extends from the first surface 421 to the second surface 422 to the inside of the light path bending element 420, and the second light shielding structure 4202 extends from the second surface 422 to the first surface 421 to the inside of the light path bending element 420. Specifically, in the fourth embodiment, the first light shading structure 4201 and the second light shading structure 4202 are respectively gradually contracted from the first surface 421 and the second surface 422 along the first direction X1 toward the interior of the light path bending element 420, and recessed structures are respectively formed on the first surface 421 and the second surface 422, and the first light shading structure 4201 and the second light shading structure 4202 are respectively a light shading coating, but the present disclosure is not limited to this.

Furthermore, the light path bending element 420 may further include a third light shielding structure 4203 disposed on an edge of the first surface 421 close to the first reflective surface 423. In the fourth embodiment, the third light shielding structure 4203 is a light shielding coating disposed on the edge of the first surface 421 close to the first reflective surface 423.

As can be seen from Figure 4B, in the fourth embodiment, the distance between the first surface 421 and the second surface 422 along the first direction X1 is H, the center extension depth of the first light shading structure 4201 along the first direction X1 is h1, the center extension depth of the second light shading structure 4202 along the first direction X1 is h2, the center distance between the first light shading structure 4201 and the second light shading structure 4202 along the first direction X1 is Ls, the angle of the sharp angle is α, and the distance from the center of the third light shading structure 4203 along the first direction X1 to the edge of the first surface 421 is D3, which are the values of the following Table 4 respectively. Table 4 - Fourth embodiment H (mm) 2.685 h1/H 0.581 h1 (mm) 1.56 h2/H 0.54 h2 (mm) 1.45 α (degrees) 27 Ls (mm) 3.349 D3 (mm) 0.413 tanθ 0.097

In the above Table 4, tanθ = (h1+h2-H)/Ls.

<Fifth Embodiment>

Please refer to FIG. 5A, which shows a schematic diagram of a camera module 500 in accordance with the fifth embodiment of the present disclosure. As can be seen from FIG. 5A, the camera module 500 includes an imaging lens 510, an electronic photosensitive element 540, and an optical path deflecting element 520. The electronic photosensitive element 540 is disposed on an imaging surface 530 of the imaging lens 510, and the optical path deflecting element 520 is disposed on the image side of the imaging lens 510 and between the imaging lens 510 and the electronic photosensitive element 540. The imaging lens 510 is disposed corresponding to the first surface 521 of the optical path deflecting element 520, and the optical path deflecting element 520 is used to deflect the imaging light of the imaging lens 510 to the electronic photosensitive element 540. The imaging lens 510 may include a lens barrel 511 and at least one optical element 512, wherein the optical element 512 is disposed in the lens barrel 511, and the optical element 512 may be a lens, a light shielding element, a fixing ring, etc., which will not be described in detail herein. In addition, as can be seen from FIG. 5A, the camera module 500 may further include a filter element 550, which is located between the optical path bending element 520 and the imaging surface 530, but the present disclosure is not limited thereto.

Please refer to FIG. 5B and FIG. 5C, wherein FIG. 5B is a schematic diagram of the first light shielding structure 5201 and the second light shielding structure 5202 of the light path bending element 520 in the fifth embodiment according to FIG. 5A, and FIG. 5C is a three-dimensional schematic diagram of the light path bending element 520 in the fifth embodiment according to FIG. 5A. It can be seen from FIG. 5A, FIG. 5B and FIG. 5C that the light path bending element 520 includes a first surface 521, a second surface 522, a first reflection surface 523 and a second reflection surface 524. Light is incident on the light path bending element 520 from the first surface 521. The second surface 522 and the first surface 521 are arranged correspondingly in a first direction X1 and are parallel to each other, and the first direction X1 is perpendicular to the first surface 521. The first reflective surface 523 connects the first surface 521 and the second surface 522, and forms an acute angle with the first surface 521. The light undergoes an internal reflection through the first reflective surface 523. The light undergoes another internal reflection through the second reflective surface 524. Thereby, the imaging light enters the electronic photosensitive element 540. Specifically, the first reflective surface 523 and the second reflective surface 524 are correspondingly arranged in a direction perpendicular to the first direction X1 and are parallel to each other. The refractive index of the optical path bending element 520 is N, which satisfies the following conditions: 1.45 < N < 2.1. In the fifth embodiment, the refractive index of the optical path bending element 520 is 1.47, but the present disclosure is not limited thereto.

The light path bending element 520 includes two light shielding structures, namely a first light shielding structure 5201 and a second light shielding structure 5202. The first light shielding structure 5201 extends from the first surface 521 to the inside of the light path bending element 520, and the second light shielding structure 5202 extends from the second surface 522 to the inside of the light path bending element 520; that is, the first light shielding structure 5201 extends from the first surface 521 to the inside of the light path bending element 520 in the direction of the second surface 522, and the second light shielding structure 5202 extends from the second surface 522 to the first surface 521 to the inside of the light path bending element 520. In the fifth embodiment, the first light shielding structure 5201 and the second light shielding structure 5202 are light shielding plates embedded in the light path bending element 520, but the present disclosure is not limited thereto.

The first light shielding structure 5201 and the second light shielding structure 5202 respectively include a plurality of protrusions 52011 and 52021, and the protrusions 52011 and 52021 are disposed toward the inside of the light path bending element 520. Specifically, the first light shielding structure 5201 and the second light shielding structure 5202 respectively have a thickness, the center of which is concave relative to the two ends, and the protrusions 52011 and 52021 are respectively disposed on the surface of the concave part and face toward the inside of the light path bending element 520. It must be explained that the surface of the concave part of the second light shielding structure 5202 is in a convex arc shape, and the protrusion 52021 is disposed on the convex arc shape.

As can be seen from Figure 5B, in the fifth embodiment, the distance between the first surface 521 and the second surface 522 along the first direction X1 is H, the center extension depth of the first light shading structure 5201 along the first direction X1 is h1, the center extension depth of the second light shading structure 5202 along the first direction X1 is h2, the center distance between the first light shading structure 5201 and the second light shading structure 5202 along the perpendicular first direction X1 is Ls, the angle of the sharp angle is α, the height of the protrusion 52011 is T1, the height of the protrusion 52021 is T2, the width of the protrusion 52011 is W1, and the width of the protrusion 52021 is W2, which are respectively the values in the following Table 5. Table 5 - Fifth embodiment H (mm) 2.385 tanθ 0.104 h1 (mm) 1.25 h1/H 0.524 h2 (mm) 1.5 h2/H 0.629 Ls (mm) 3.5 α (degrees) 29 T1 (mm) 0.173 W1 (mm) 0.2 T1/W1 0.865 T2 (mm) 0.101 W2 (mm) 0.298 T2/W2 0.339

In the above Table 5, tanθ = (h1+h2-H)/Ls.

<Sixth embodiment>

Please refer to FIG. 6A and FIG. 6B, wherein FIG. 6A shows a schematic diagram of an electronic device 10 in a sixth embodiment of the present disclosure, and FIG. 6B shows another schematic diagram of the electronic device 10 in the sixth embodiment of FIG. 6A. As can be seen from FIG. 6A and FIG. 6B, the electronic device 10 is a smart phone, and the electronic device 10 includes a plurality of camera modules and a user interface 11. Further, the camera modules are an ultra-wide-angle camera module 12, a high-pixel camera module 13, and a telephoto camera module 14, and the user interface 11 is a touch screen, but is not limited thereto. Specifically, the camera module can be any one of the aforementioned first to fifth embodiments, but the present disclosure is not limited thereto.

The user enters the shooting mode through the user interface 11, wherein the user interface 11 is used to display the screen and can be used to manually adjust the shooting angle to switch different camera modules. At this time, the camera module gathers imaging light on an electronic photosensitive element (not shown) of the camera module and outputs electronic signals related to the image to the image signal processing element (Image Signal Processor, ISP) 15.

As can be seen from FIG. 6B , in response to the camera specifications of the electronic device 10 , the electronic device 10 may further include an optical image stabilization component (not shown). Furthermore, the electronic device 10 may further include at least one focus assist module (not shown) and at least one sensor element (not shown). The focus assist module may be a flash module 16 for compensating color temperature, an infrared ranging element, a laser focus module, etc. The sensing element may have the function of sensing physical momentum and motion energy, such as an accelerometer, a gyroscope, or a Hall Effect Element, so as to sense the shaking and trembling imposed by the user's hand or the external environment, thereby facilitating the automatic focus function and the optical image stabilization component configured in the camera module of the electronic device 10 to obtain good imaging quality, and helping the electronic device 10 according to the present disclosure to have multiple modes of shooting functions, such as optimized Selfie, low-light HDR (High Dynamic Range) imaging, high-resolution 4K (4K Resolution) recording, etc. In addition, the user can directly view the camera's shooting screen through the user interface 11 and manually operate the framing range on the user interface 11 to achieve a WYSIWYG auto focus function.

Furthermore, the camera module, optical image stabilization assembly, sensor element and focus assist module can be arranged on a flexible printed circuit board (FPC) (not shown), and electrically connected to the imaging signal processing element 15 and other related elements through a connector (not shown) to execute the shooting process. Current electronic devices such as smart phones have a trend of being thin and light. The camera module and related components are arranged on a flexible printed circuit board, and then the circuit is integrated into the main board of the electronic device through a connector. This can meet the requirements of the mechanism design and circuit layout of the limited space inside the electronic device and obtain a larger margin, and also make the auto focus function of the camera module more flexible to control through the touch screen of the electronic device. In the sixth embodiment, the electronic device 10 may include a plurality of sensing elements and a plurality of focus assisting modules, which are disposed on a flexible circuit board and at least one other flexible circuit board (not shown), and are electrically connected to the imaging signal processing element 15 and other related elements through corresponding connectors to execute the shooting process. In other embodiments (not shown), the sensing elements and the auxiliary optical elements may also be disposed on the main board of the electronic device or other forms of carrier boards according to the mechanism design and circuit layout requirements.

In addition, the electronic device 10 may further include but is not limited to a display unit (Display), a control unit (Control Unit), a storage unit (Storage Unit), a RAM (RAM), a read-only memory unit (ROM) or a combination thereof.

FIG. 6C is a schematic diagram showing an image captured by the electronic device 10 according to the sixth embodiment of FIG. 6A. As can be seen from FIG. 6C, the ultra-wide-angle camera module 12 can capture images of a wider range, and has the function of accommodating more scenery.

FIG. 6D is another schematic diagram of an image captured by the electronic device 10 in the sixth embodiment according to FIG. 6A. As can be seen from FIG. 6D, the high-pixel camera module 13 can capture images with high pixels within a certain range, and has the function of high resolution and low distortion.

FIG. 6E is another schematic diagram of an image captured by the electronic device 10 in the sixth embodiment of FIG. 6A. As can be seen from FIG. 6E, the telephoto camera module 14 has a high-magnification function, and can capture images at a distance and magnify them to a high magnification.

As can be seen from FIG. 6C to FIG. 6E , by framing with camera modules having different focal lengths and combining with image processing technology, the zoom function can be realized in the electronic device 10 .

<Seventh Embodiment>

Please refer to FIG. 7, which shows a schematic diagram of an electronic device 20 in the seventh embodiment of the present disclosure. As can be seen from FIG. 7, the electronic device 20 is a smart phone, and the electronic device 20 includes a plurality of camera modules. Further, the camera modules are ultra-wide-angle camera modules 21, 22, wide-angle camera modules 23, 24, telephoto camera modules 25, 26, 27, 28 and a TOF module (Time-Of-Flight) 29, and the TOF module 29 can also be other types of camera modules, and is not limited to this configuration. Specifically, the camera module can be any one of the aforementioned first to fifth embodiments, but the present disclosure is not limited thereto.

Furthermore, the telephoto camera modules 27 and 28 have the function of deflecting the optical path, but the present disclosure is not limited thereto.

In response to the camera specifications of the electronic device 20, the electronic device 20 may further include an optical image stabilization component (not shown). Furthermore, the electronic device 20 may further include at least one focus assist module (not shown) and at least one sensor element (not shown). The focus assist module may be a flash module 20a for compensating color temperature, an infrared ranging element, a laser focus module, etc. The sensing element may have the function of sensing physical momentum and motion energy, such as an accelerometer, a gyroscope, or a Hall Effect Element, so as to sense the shaking and trembling imposed by the user's hand or the external environment, thereby facilitating the automatic focus function and the optical image stabilization component configured in the camera module of the electronic device 20 to obtain good imaging quality, and helping the electronic device 20 according to the present disclosure to have multiple modes of shooting functions, such as optimized Selfie, low-light HDR (High Dynamic Range) imaging, high-resolution 4K (4K Resolution) recording, etc.

In addition, the structures and configurations of the remaining components of the seventh embodiment are the same as those of the sixth embodiment and will not be further described herein.

<Eighth Embodiment>

Please refer to FIG. 8A to FIG. 8C, wherein FIG. 8A is a schematic diagram of a vehicle tool 30 according to an eighth embodiment of the present disclosure, FIG. 8B is another schematic diagram of the vehicle tool 30 according to the eighth embodiment of FIG. 8A, and FIG. 8C is another schematic diagram of the vehicle tool 30 according to the eighth embodiment of FIG. 8A. It can be seen from FIG. 8A to FIG. 8C that the vehicle tool 30 includes a plurality of camera modules 31. In the eighth embodiment, the number of the camera modules 31 is six, and the camera modules 31 can be any one of the aforementioned first to fifth embodiments, but are not limited thereto.

As can be seen from FIG. 8A and FIG. 8B , the camera module 31 is a vehicle camera module, and the two camera modules 31 are respectively located below the left and right rearview mirrors, and are used to capture image information of a viewing angle θ. Specifically, the viewing angle θ can meet the following conditions: 40 degrees < θ < 90 degrees. In this way, image information within the left and right lanes can be captured.

As can be seen from FIG. 8B , the other two of the camera modules 31 can be disposed in the space inside the vehicle tool 30. Specifically, the two camera modules 31 are disposed respectively near the rearview mirror inside the vehicle and near the rear window. Furthermore, the other camera modules 31 can be disposed respectively on the non-mirror surface of the left and right rearview mirrors of the vehicle tool 30, but the invention is not limited thereto.

As can be seen from FIG. 8C , two of the camera modules 31 can be disposed at the front and rear ends of the vehicle tool 30. The configuration of the camera modules 31 at the front and rear ends of the vehicle tool 30 and below the left and right rearview mirrors can help the driver obtain external spatial information outside the cockpit, such as external spatial information I1, I2, I3, and I4, but not limited thereto. In this way, more viewing angles can be provided to reduce blind spots, thereby helping to improve driving safety. Furthermore, by arranging the camera modules 31 around the vehicle tool 30, it is helpful to identify road condition information outside the vehicle tool 30, so as to help realize the function of automatic driving assistance.

Although the present invention has been disclosed as above by way of implementation and examples, they are not intended to limit the present invention. Any person with ordinary knowledge in the relevant technical field may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the attached patent application.

10,20: Electronic devices 11: User interface 12,21,22: Ultra-wide-angle camera module 23,24: Wide-angle camera module 13: High-pixel camera module 14,25,26,27,28: Telephoto camera module 15: Imaging signal processing element 16,20a: Flash module 29: TOF module 30: Vehicle tools 100,200,300,400,500,31: Camera module 110,210,310,410,510: Imaging lens 111,211,311,411,511: Lens barrel 112,212,312,412,512: Optical element 120,220,320,420,520: optical path bending element 121,221,321,421,521: first surface 122,222,322,422,522: second surface 123,223,323,423,523: first reflection surface 124,224,324,424,524: second reflection surface 1201,2201,4201,5201: first shading structure 12011,12021,32001,52011,52021: raised portion 1202,2202,4202,5202: second shading structure 1203,2203,4203: third shading structure 3200: shading structure 130,230,330,430,530: imaging surface 140,240,340,440,540: electronic photosensitive element 150,250,350,450,550: filter element X1: first direction H: distance between the first surface and the second surface along the first direction h1: center extension depth of the first shading structure along the first direction h2: center extension depth of the second shading structure along the first direction h: center extension depth of the shading structure along the first direction Ls: center distance between the first shading structure and the second shading structure along the first direction perpendicular to the first direction α: angle of sharp angle D3: distance from the center of the third shading structure to the edge of the first surface along the first direction perpendicular to the first direction θ: viewing angle I1,I2,I3,I4: external spatial information W, W1, W2: Width of the raised part T, T1, T2: Height of the raised part

FIG. 1A is a schematic diagram of a camera module in the first embodiment of the present disclosure; FIG. 1B is a schematic diagram of a first shading structure and a second shading structure of an optical path bending element in the first embodiment of FIG. 1A; FIG. 1C is a three-dimensional schematic diagram of an optical path bending element in the first embodiment of FIG. 1A; FIG. 2A is a schematic diagram of a camera module in the second embodiment of the present disclosure; FIG. 2B is a schematic diagram of a first shading structure and a second shading structure of an optical path bending element in the second embodiment of FIG. 2A; FIG. 2C is a three-dimensional schematic diagram of an optical path bending element in the second embodiment of FIG. 2A; FIG. 3A is a schematic diagram of a camera module in the third embodiment of the present disclosure; FIG. 3B is a schematic diagram of a shading structure of an optical path bending element in the third embodiment of FIG. 3A; FIG. 4A is a schematic diagram of a camera module in the fourth embodiment of the present disclosure; FIG. 4B is a schematic diagram of a first shading structure and a second shading structure of an optical path bending element in the fourth embodiment of FIG. 4A; FIG. 4C is a three-dimensional schematic diagram of an optical path bending element in the fourth embodiment of FIG. 4A; FIG. 5A is a schematic diagram of a camera module in the fifth embodiment of the present disclosure; FIG. 5B is a schematic diagram of a first shading structure and a second shading structure of an optical path bending element in the fifth embodiment of FIG. 5A; FIG. 5C is a three-dimensional schematic diagram of an optical path bending element in the fifth embodiment of FIG. 5A; FIG. 6A is a schematic diagram of an electronic device in the sixth embodiment of the present disclosure; FIG. 6B is another schematic diagram of an electronic device in the sixth embodiment of FIG. 6A; FIG. 6C is a schematic diagram of an image captured by an electronic device in the sixth embodiment according to FIG. 6A; FIG. 6D is a schematic diagram of another image captured by an electronic device in the sixth embodiment according to FIG. 6A; FIG. 6E is a schematic diagram of another image captured by an electronic device in the sixth embodiment according to FIG. 6A; FIG. 7 is a schematic diagram of an electronic device in the seventh embodiment according to the present disclosure; FIG. 8A is a schematic diagram of a vehicle tool in the eighth embodiment according to the present disclosure; FIG. 8B is another schematic diagram of a vehicle tool in the eighth embodiment according to FIG. 8A; and FIG. 8C is another schematic diagram of a vehicle tool in the eighth embodiment according to FIG. 8A.

100: Camera module

110: Imaging lens

111: Lens tube

112: Optical components

120: Optical path turning element

121: First surface

122: Second surface

123: First reflection surface

124: Second reflection surface

130: Imaging surface

140: Electronic photosensitive element

150: Filter element

X1: First direction

Claims (38)

A light path deflecting element comprises: a first surface, a light ray is incident on the light path deflecting element from the first surface; a second surface, arranged corresponding to the first surface in a first direction and parallel to each other, and the first direction is perpendicular to the first surface; a first reflection surface, connecting the first surface and the second surface, and forming an acute angle with the first surface, and the light ray undergoes an internal reflection through the first reflection surface; and a second reflection surface, and the light ray undergoes another internal reflection through the second reflection surface; wherein the light path deflecting element further comprises a first shading structure and a second shading structure, the first shading structure extends from the first surface to the interior of the light path deflecting element, and the second shading structure extends from the second surface to the interior of the light path deflecting element; The distance between the first surface and the second surface along the first direction is H, the central extension depth of the first shading structure along the first direction is h1, the central extension depth of the second shading structure along the first direction is h2, and the central distance between the first shading structure and the second shading structure along the perpendicular direction to the first direction is Ls, which meets the following conditions: 0 ≤ tanθ ≤ 0.45, where tanθ = (h1+h2-H)/Ls. The optical path deflection element as described in claim 1, wherein the distance between the first surface and the second surface along the first direction is H, and the central extension depth of the first light shielding structure along the first direction is h1, which meets the following conditions: 0.45 ≤ h1/H ≤ 0.80. The optical path deflection element as described in claim 2, wherein the distance between the first surface and the second surface along the first direction is H, and the central extension depth of the second light shielding structure along the first direction is h2, which meets the following conditions: 0.45 ≤ h2/H ≤ 0.80. The optical path deflection element as described in claim 1, wherein the sharp angle is α, which satisfies the following conditions: 10 degrees < α < 40 degrees. The optical path deflection element as described in claim 4, wherein the sharp angle is α, which satisfies the following conditions: 15 degrees < α < 37 degrees. The light path bending element as described in claim 1, wherein the first reflecting surface and the second reflecting surface are arranged correspondingly and perpendicular to the first direction and are parallel to each other. As described in claim 1, the first light-shielding structure and the second light-shielding structure gradually shrink from the first surface and the second surface along the first direction toward the inside of the light path bending element respectively. The optical path bending element as described in claim 1, wherein the refractive index of the optical path bending element is N, which satisfies the following conditions: 1.45 ＜ N ＜ 2.1. As described in claim 1, the light path bending element further includes a third shading structure, and the third shading structure is arranged on an edge of the first surface, and the edge is close to the first reflecting surface. The optical path deflection element as described in claim 9, wherein the distance from the center of the third light-shielding structure to the edge of the first surface along the perpendicular direction is D3, which satisfies the following conditions: 0.4 mm < D3 < 2.3 mm. The light path bending element as described in claim 1, wherein at least one of the first light shading structure and the second light shading structure comprises a plurality of protrusions, and the protrusions are arranged toward the interior of the light path bending element. A light path deflecting element comprises: a first surface, a light ray is incident on the light path deflecting element from the first surface; a second surface, arranged corresponding to the first surface in a first direction and parallel to each other, and the first direction is perpendicular to the first surface; a first reflection surface, connecting the first surface and the second surface, and forming an acute angle with the first surface, and the light ray undergoes an internal reflection through the first reflection surface; and a second reflection surface, and the light ray undergoes another internal reflection through the second reflection surface; wherein the light path deflecting element further comprises a first shading structure, a second shading structure and a third shading structure, the first shading structure extends from the first surface to the inside of the light path deflecting element, the second shading structure extends from the second surface to the inside of the light path deflecting element, and the third shading structure is arranged at an edge of the first surface, and the edge is close to the first reflection surface; The distance between the first surface and the second surface along the first direction is H, the central extension depth of the first shading structure along the first direction is h1, the central extension depth of the second shading structure along the first direction is h2, the central distance between the first shading structure and the second shading structure along the first direction perpendicular to the first direction is Ls, and the distance from the center of the third shading structure to the edge of the first surface along the first direction perpendicular to the first direction is D3, which meets the following conditions: -0.2 ≤ tanθ ≤ 0.55, where tanθ = (h1+h2-H)/Ls; and 0.4 mm ＜ D3 ＜ 2.3 mm. The optical path deflection element as described in claim 12, wherein the distance between the first surface and the second surface along the first direction is H, and the central extension depth of the first light shielding structure along the first direction is h1, which meets the following conditions: 0.45 ≤ h1/H ≤ 0.80. The optical path deflection element as described in claim 13, wherein the distance between the first surface and the second surface along the first direction is H, and the central extension depth of the second light shielding structure along the first direction is h2, which satisfies the following conditions: 0.45 ≤ h2/H ≤ 0.80. The optical path deflection element as described in claim 12, wherein the distance from the center of the third light-shielding structure to the edge of the first surface along the perpendicular direction is D3, which satisfies the following conditions: 0.6 mm < D3 < 2.1 mm. The optical path deflection element as described in claim 15, wherein the distance from the center of the third light-shielding structure to the edge of the first surface along the perpendicular direction is D3, which satisfies the following conditions: 0.9 mm < D3 < 2.0 mm. An optical path turning element as described in claim 12, wherein the first reflecting surface and the second reflecting surface are arranged correspondingly and perpendicular to the first direction and are parallel to each other. As described in claim 12, the first light-shielding structure and the second light-shielding structure gradually shrink from the first surface and the second surface along the first direction toward the inside of the light path bending element respectively. The optical path bending element as described in claim 12, wherein the refractive index of the optical path bending element is N, which satisfies the following conditions: 1.45 ＜ N ＜ 2.1. An optical path bending element as described in claim 12, wherein at least one of the first light-shielding structure and the second light-shielding structure comprises a plurality of protrusions, and the protrusions are arranged toward the interior of the optical path bending element. A light path deflection element comprises: a first surface, a light ray is incident on the light path deflection element from the first surface; a second surface, arranged corresponding to the first surface in a first direction and parallel to each other, and the first direction is perpendicular to the first surface; a first reflection surface, connecting the first surface and the second surface, and forming an acute angle with the first surface, the light ray undergoes an internal reflection through the first reflection surface; and a second reflection surface, the light ray undergoes another internal reflection through the second reflection surface; wherein the light path deflection element further comprises a shading structure, the shading structure extends from at least one of the first surface and the second surface to the inside of the light path deflection element; wherein the distance between the first surface and the second surface along the first direction is H, and the central extension depth of the shading structure along the first direction is h, which satisfies the following conditions: 0.45 ≤ h/H ≤ 0.80. The optical path deflection element as described in claim 21, wherein the distance between the first surface and the second surface along the first direction is H, and the central extension depth of the shading structure along the first direction is h, which satisfies the following conditions: 0.49 ≤ h/H ≤ 0.80. The optical path deflection element as described in claim 22, wherein the distance between the first surface and the second surface along the first direction is H, and the central extension depth of the shading structure along the first direction is h, which satisfies the following conditions: 0.53 ≤ h/H ≤ 0.78. The optical path deflection element as described in claim 23, wherein the distance between the first surface and the second surface along the first direction is H, and the central extension depth of the shading structure along the first direction is h, which satisfies the following conditions: 0.57 ≤ h/H ≤ 0.75. The optical path deflection element as described in claim 21, wherein the sharp angle is α, which satisfies the following conditions: 10 degrees < α < 40 degrees. The optical path deflection element as described in claim 25, wherein the sharp angle is α, which satisfies the following conditions: 15 degrees < α < 37 degrees. The optical path bending element as described in claim 21, wherein the refractive index of the optical path bending element is N, which satisfies the following conditions: 1.45 ＜ N ＜ 2.1. An optical path bending element as described in claim 21, wherein the shading structure includes a plurality of protrusions, and the protrusions are arranged toward the interior of the optical path bending element. A light path bending element as described in claim 21, wherein the shading structure gradually shrinks from at least one of the first surface and the second surface along the first direction toward the interior of the light path bending element. A camera module comprises: an imaging lens; an electronic photosensitive element; and the optical path deflecting element as described in claim 21, wherein the imaging lens is arranged corresponding to the first surface of the optical path deflecting element, and the optical path deflecting element is used to deflect an imaging light of the imaging lens to the electronic photosensitive element. An electronic device comprising: The camera module as described in claim 30. A light path deflecting element comprises: a first surface, a light ray is incident on the light path deflecting element from the first surface; a second surface, arranged corresponding to the first surface in a first direction and parallel to each other, and the first direction is perpendicular to the first surface; a first reflection surface, connecting the first surface and the second surface, and forming an acute angle with the first surface, and the light ray undergoes an internal reflection through the first reflection surface; and a second reflection surface, and the light ray undergoes another internal reflection through the second reflection surface; wherein the light path deflecting element further comprises a shading structure, and the shading structure extends from at least one of the first surface and the second surface to the interior of the light path deflecting element; The shading structure includes a plurality of protrusions, and the protrusions are arranged toward the inside of the light path bending element, the height of each protrusion is T, and the width of each protrusion is W, which meets the following conditions: 0.1 < T/W < 3.5. The optical path deflection element as described in claim 32, wherein the distance between the first surface and the second surface along the first direction is H, and the central extension depth of the shading structure along the first direction is h, which satisfies the following conditions: 0.45 ≤ h/H ≤ 0.80. The optical path bending element as described in claim 32, wherein the refractive index of the optical path bending element is N, which satisfies the following conditions: 1.45 ＜ N ＜ 2.1. The optical path deflection element as described in claim 32, wherein the sharp angle is α, which satisfies the following conditions: 10 degrees < α < 40 degrees. The optical path deflection element as described in claim 35, wherein the sharp angle is α, which satisfies the following conditions: 15 degrees < α < 37 degrees. The optical path deflection element as described in claim 32, wherein the height of each protrusion is T, and the width of each protrusion is W, which satisfies the following conditions: 0.2 ＜ T/W ＜ 2.2. The optical path deflection element as described in claim 37, wherein the height of each protrusion is T, and the width of each protrusion is W, which satisfies the following conditions: 0.25 ＜ T/W ＜ 1.05.

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