TW201809733A - Optical lens and fixture thereof - Google Patents

Abstract

An optical lens including a lens and at least one optical layer is provided. The lens has a central region and a peripheral region surrounding the central region. The at least one optical layer is disposed on the lens. Each optical layer is located in the peripheral region and exposes the central region, wherein the peripheral region has at least one first gap strip region connected to the central region, and each optical layer exposes the at least one first gap strip region. A fixture is also provided.

Description

Optical lens and its fixture

The invention relates to an optical element and a fixture thereof, and in particular to an optical lens and a fixture thereof.

With the ever-changing specifications of portable electronic products, its key component, the optical lens group, has also become more diverse. Applications are not limited to shooting images and videos, but also include environmental monitoring, driving record photography, etc. With the advancement of measurement technology, consumers' requirements for imaging quality have also increased.

In order to improve the imaging quality of the optical lens group (for example, to improve the problem of stray light), it is sometimes necessary to improve the optical performance (such as transmittance or reflectance) of a specific area (such as the peripheral area) of the optical lens. For example, in the conventional technology, the edge of the optical lens is usually shielded by a light shielding element (that is, the transmittance of the peripheral region is reduced) to filter stray light formed by edge reflection or refraction, thereby reducing the stray light for imaging quality. Negative effects. However, in addition to the difficulty in maintaining better assembly accuracy, the light-shielding device also has the problem of easily affecting imaging quality due to poor assembly. Therefore, how to improve the optical performance of a specific region of an optical lens while maintaining the ideal assembly accuracy has long been eagerly pursued by industry, government and academia in this field.

The invention provides an optical lens, which can improve the optical performance of the peripheral area while maintaining the ideal assembly accuracy.

The invention provides a jig for making the optical lens.

An optical lens according to an embodiment of the invention includes a lens and at least one optical layer. The lens has a central area and a peripheral area surrounding the central area. The at least one optical layer is disposed on the lens. Each optical layer is located in the peripheral region and exposes the central region, wherein the peripheral region has at least one first strip-shaped void region connected to the central region, and each optical layer exposes the at least one first strip-shaped void region.

In an embodiment of the present invention, a point connecting each first strip-shaped void region and the central region is defined as a first connection point, and a straight line passing through the first connection point in the radial direction from the center of the lens is a first radius line. The included corner between each first strip-shaped void area and the orthographic projection of the first radius line on a reference plane perpendicular to the optical axis direction of the optical lens is in the range of 30 degrees to 60 degrees.

In an embodiment of the present invention, each of the first strip-shaped void regions is connected between the central region and the peripheral edge of the lens.

In an embodiment of the present invention, the peripheral region further includes at least one second stripe-shaped void region not connected to the central region, and each optical layer further exposes the at least one second stripe-shaped void region.

In an embodiment of the present invention, each of the first strip-shaped void regions is connected between the central region and the peripheral edge of the lens. Each second strip-shaped void region is connected to the periphery of the lens.

According to an embodiment of the present invention, a jig is suitable for fixing a lens of an optical lens in the process of manufacturing the above-mentioned optical lens. The fixture includes a carrier board, a shielding board, and at least one first connecting portion. The carrier board has at least one opening. The shielding plate is located in the opening and covers the central area of the lens. The at least one first connection portion connects the carrier plate and the shielding plate, wherein the at least one first connection portion supports a peripheral region of the lens and shields the at least one first strip-shaped gap region.

In an embodiment of the present invention, a point at which each first connection portion is connected to the shielding plate is defined as a second connection point, and a straight line passing through the second connection point in the radial direction from the center of the shielding plate is a second radius line. The included corner between each first connection portion and the second radius line in the orthographic projection on the reference plane perpendicular to the optical axis direction of the optical lens is in the range of 30 degrees to 60 degrees.

In an embodiment of the present invention, an inner diameter of the carrier plate is larger than a diameter of the lens.

In an embodiment of the present invention, the jig further includes at least one second connecting portion. The at least one second connection portion is located in the opening, is connected to the carrier plate, and is not connected to the shielding plate, wherein the at least one second connection portion supports a peripheral area of the lens and is defined in the peripheral area as not connected to the central area. At least one second strip-shaped void region.

Based on the above, the beneficial effects of the embodiments of the present invention are that in the optical lens, since the optical layer is directly formed on the lens, compared with the additional provision of a light shielding element outside the lens, the optical lens can maintain the ideal assembly accuracy To improve the optical performance of the surrounding area. In addition, by appropriately designing the connection portion (such as the first connection portion or the second connection portion) of the jig for making the optical lens, in addition to improving the coverage of the at least one optical film, It can also improve the yield rate of the optical lens and improve the problem of the lens falling due to vibration during the coating process.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

FIG. 1A is a schematic top view of a jig according to a first embodiment of the present invention. FIG. 1B is a schematic top view of an optical lens according to a first embodiment of the present invention. FIG. 1C is a schematic cross-sectional view after the jig of FIG. 1A and the lens of FIG. 1B are assembled. 2A to 2C are schematic diagrams of the first to third cross sections of the section line A-A 'in FIG. 1B. In FIG. 1A, for the convenience of explaining the relative relationship between the jig and the optical lens, the edge of the lens is indicated by a thin dotted line, and the boundary of the center region and the peripheral region of the lens is indicated by a thick dotted line. The area within the thick dotted line corresponds to the central area of the lens. The area outside the thick dotted line and within the thin dotted line corresponds to the peripheral area of the lens.

Please refer to FIG. 1B first. The optical lens 100 includes a lens 110 and at least one optical layer 120. The lens 110 has refractive power, and the lens 110 may be a spherical lens or an aspherical lens. The lens 110 has a central area A1 and a peripheral area A2 surrounding the central area A1 (the boundary between the central area A1 and the peripheral area A2 is indicated by a thick solid line in FIG. 1B). The central area A1 is defined as an optical effective diameter area, which is suitable for passing light, and the diameter of the central area A1 is the clear aperture of the lens 110, and the diameter tolerance range is about 0.2 mm to 0.6 mm.

The at least one optical layer 120 is disposed on the lens 110. Each optical layer 120 is located in the peripheral area A2 and exposes the central area A1. The material of the at least one optical layer 120 may be different according to different needs. For example, if the transmittance of the peripheral region A2 is to be reduced, the material of the at least one optical layer 120 may include Ti _x O _y or Cr _x O _y , where x and y are each greater than 0, and (x + y ) ≦ 1. On the other hand, if the reflectivity of the peripheral region A2 is to be reduced, the at least one optical layer 120 may be a multilayer film. The multilayer film may be formed by alternately stacking at least one high refractive index layer and at least one low refractive index layer. In this way, the reflectivity of the peripheral region A2 can be reduced by satisfying the destructive interference condition, thereby achieving anti-reflection, that is, the effect of reducing the reflectivity. For example, the material of the high refractive index layer may include Ti _x O _y or Cr _x O _y , where x and y are each greater than 0, and (x + y) ≦ 1. The material of the low refractive index layer may include silicon dioxide or silicon oxide, but is not limited thereto.

In an embodiment, as shown in FIG. 2A, the number of the at least one optical layer 120 may be one, and the optical layer 120 is disposed on one of the surfaces S1 and S2 of the lens 110, where the surfaces S1 and S2 are One of them is the object side, and the other is the image side. Alternatively, as shown in FIG. 2B, the number of the at least one optical layer 120 may be two. Specifically, the at least one optical layer 120 may include a first optical layer 122 and a second optical layer 124. The first optical layer 122 and the second optical layer 124 overlap, and the first optical layer 122 and the second optical layer 124 are respectively disposed on two opposite surfaces S1 and S2 of the lens 110. One of the surfaces S1 and S2 is an object side, and the other is an image side. Furthermore, as shown in FIG. 2C, the first optical layer 122 and the second optical layer 124 may be disposed on the same surface (such as the surface S1) of the lens 110. It is added that the number, thickness, material, or relative configuration of the at least one optical layer 120 may be changed according to design requirements, and is not limited to the above.

According to different fixtures 10 used to make the optical lens 100, the at least one optical layer 120 may have different implementation forms. The optical lens 100 of FIG. 1B is made by, for example, coating. During the coating process, the lens 110 of the optical lens 100 is fixed by the jig 10 of FIG. 1A, so as to form the at least one optical layer 120 in the peripheral area A2 of the lens 110.

The jig 10 may include a carrier plate 12, a shielding plate 14, and at least one first connecting portion 16. The carrier plate 12 can be used to support the lens 110, and the material thereof is, for example, stainless steel or metal, but is not limited thereto. The carrier plate 12 has at least one opening O. FIG. 1A schematically illustrates an opening O, but the present invention is not limited thereto.

The shielding plate 14 is located in the opening O and shields the central area A1 of the lens 110. In this way, during the coating process, a coating material (such as the material of the at least one optical layer 120) can be prevented from being formed on the central area A1, and after the coating is completed, the at least one optical layer 120 will expose the center Area A1. The material of the shielding plate 14 is, for example, stainless steel or metal, but is not limited thereto.

The at least one first connecting portion 16 connects the carrier plate 12 and the shielding plate 14, and the at least one first connecting portion 16 is suitable for supporting the peripheral area A2 of the lens 110. The material is, for example, stainless steel or metal, but not the same. Limited. In this embodiment, the carrier plate 12, the shielding plate 14, and the at least one first connecting portion 16 can be located on the same horizontal plane (as shown in FIG. 1C). However, according to different design requirements, the carrier plate 12 and the shielding plate 14 can be located on different horizontal planes, and the at least one first connecting portion 16 is connected between the plane where the carrier plate 12 is located and the plane where the shielding plate 14 is located.

During the coating process, the coating material is formed on the surface S1 of the lens 110 facing the jig 10. In addition to the shielding plate 14 being shielded to the coating material, the at least one first connecting portion 16 is also shielded to the coating material. Therefore, in the optical lens 100 formed by the jig 10, the at least one optical layer 120 In addition to exposing the central area A1, an area covered by the at least one first connecting portion 16 is also exposed. In detail, the peripheral region A2 will form at least one first strip-shaped void region A21 corresponding to the at least one first connecting portion 16. The at least one first strip-shaped void region A21 is connected to the central region A1, and the at least one first strip-shaped void region A21 is connected between the central region A1 and the peripheral edge P of the lens 110. The at least one optical layer 120 further exposes the at least one first strip-shaped void region A21.

In this embodiment, the number of the at least one first connection portion 16 is one. A point where each first connection portion 16 is connected to the shielding plate 14 is defined as a second connection point CP2, and a straight line passing through the second connection point CP2 in the radial direction DR from the center C14 of the shielding plate 14 is a second radius line r2. The included angle θ1 between the orthographic projections of each of the first connecting portions 16 and the second radius line r2 on the reference plane R1 that is perpendicular to the optical axis direction DT of the optical lens 100 falls within a range of 30 degrees to 60 degrees. As shown in FIG. 1A, the first connection portion 16 may include a plurality of first sub-connection portions (such as the first sub-connection portions 16A, 16B) connected in series with each other. The first sub-connection portion 16A is connected between the second connection point CP2 and the first sub-connection portion 16B, and the included angle between the first sub-connection portion 16B and the second radius line r2 is, for example, equal to the included angle θ1.

The number of the at least one first strip-shaped void area A21 is also one. The point where each first strip-shaped gap area A21 and the central area A1 are connected is defined as the first connection point CP1, and the straight line passing through the first connection point CP1 by the center CA1 of the lens 110 in the radial direction (same as the radial DR of the shielding plate 14) Is the first radius line r1. The included angle θ2 between each first strip-shaped void area A21 and the orthographic projection of the first radius line r1 on the reference plane R2 perpendicular to the optical axis direction DT falls within a range of 30 degrees to 60 degrees. The first stripe-shaped gap region A21 may include a plurality of first sub-regions (such as the first sub-regions A21A, A21B) connected in series. The shape and position of the first sub-region A21A correspond to the first sub-connection portion 16A, and the first The shape and position of one sub-region A21B correspond to the first sub-connection portion 16B. The shape corresponds to a case where the shape is the same or similar and the size is the same or similar. The first sub-region A21A is connected between the first connection point CP1 and the first sub-region A21B, and the included angle between the first sub-region A21B and the first radius line r1 is equal to the included angle θ2, for example.

Under the above structure, the at least one optical layer 120 covers the peripheral area A2 with an ideal coverage ratio, which can better improve the problem of stray light. It is added that when the inner diameter RI (ie, the diameter of the opening O) of the carrier plate 12 is smaller than the diameter R110 of the lens 110, the carrier plate 12 can also support the edge of the lens 110 during the coating process. In this way, it will help improve the stability of the support, and reduce the problem of damage to the first connection portion 16 due to a large force, thereby improving the process yield. Another mention is that during the coating process, since the edge of the lens 110 will be shielded by the carrier plate 12, the peripheral region A2 of the lens 110 also has a ring-shaped gap region A22. The annular gap area A22 is an area shielded by the carrier plate 12 during the coating process of the peripheral area A2. The at least one optical layer 120 further exposes a ring-shaped void region A22. In the optical imaging lens using the optical lens 100, the annular gap area A22 can be shielded by other components of the optical imaging lens (such as a clamping mechanism), so the problem of stray light is not caused.

It is added that the size of the annular gap area A22 will vary according to the diameter R110 of the lens 110, so it is not limited to those shown in FIG. 1B. If the inner diameter RI of the carrier plate 12 is greater than or equal to the diameter R110 of the lens 110, the peripheral area A2 of the lens 110 may not have the annular gap area A22 (see the optics of FIGS. 3B, 4B, 5B, 6B, and 7B). Lens 100), so that the at least one optical layer 120 covers the peripheral region A2 and has a better coverage than the annular gap region A22, and has better optical imaging quality. In this embodiment, as shown in FIG. 1C, the carrier plate 12 may further have a fixed wall structure 20 laterally and defining an opening O to assist in fixing the lens 110, thereby preventing the lens 110 from being dropped or displaced due to vibration. It is added that the carrier plate 12, the shielding plate 14, and the at least one first connecting portion 16 may be integrally formed, but not limited thereto. In another embodiment, the above-mentioned components may be separately manufactured and then assembled together. Under this architecture, the above components can be made of the same or different materials.

The following describes other embodiments of the optical lens and its fixture with reference to FIGS. 3A to 7B. 3A is a schematic top view of a jig according to a second embodiment of the present invention. 3B is a schematic top view of an optical lens according to a second embodiment of the present invention. 3C is a schematic cross-sectional view of the jig of FIG. 3A and the lens of FIG. 3B after assembly. 4A is a schematic top view of a jig according to a third embodiment of the present invention. 4B is a schematic top view of an optical lens according to a third embodiment of the present invention. 5A is a schematic top view of a jig according to a fourth embodiment of the present invention. 5B is a schematic top view of an optical lens according to a fourth embodiment of the present invention. 6A is a schematic top view of a jig according to a fifth embodiment of the present invention. 6B is a schematic top view of an optical lens according to a fifth embodiment of the present invention. 7A is a schematic top view of a jig according to a sixth embodiment of the present invention. 7B is a schematic top view of an optical lens according to a sixth embodiment of the present invention.

In the following embodiments, when the jigs of FIGS. 3A, 4A, 5A, 6A, and 7A are described, only the main differences from the jig of FIG. 1A will be described. Similar or identical elements and related descriptions in different embodiments can refer to the corresponding content of FIG. 1A and FIG. 1C, which will not be described in detail below. 3B, FIG. 4B, FIG. 5B, FIG. 6B, and FIG. 7B, only the main differences from the optical lens of FIG. 1B will be described. For similar or identical elements and related descriptions in different embodiments, reference may be made to the corresponding content in FIG. 1B, which will not be described in detail below.

Referring to FIGS. 3A and 3B, in the jig 10 of FIG. 3A, the number of the at least one first connecting portion 16 is two, and the shape of each first connecting portion 16 is a straight bar. The orthographic projection of each first connecting portion 16 on the reference plane R1 extends, for example, in the radial direction DR of the shielding plate 14, and the included angle θ3 between the orthographic projections of the first connecting portion 16 on the reference plane R1 is, for example, 180 degrees.

In the optical lens 100 of FIG. 3B, the number of the at least one first stripe-shaped void region A21 is also two, and the shape of each first stripe-shaped void region A21 is a straight strip. The orthographic projection of each first strip-shaped void region A21 on the reference plane R2 extends, for example, along the radial direction of the central region A1 (same as the radial DR of the shielding plate 14), and the first strip-shaped void region A21 on the reference plane R2 The included angle θ4 between the orthographic projections is, for example, 180 degrees.

Under the above-mentioned structure, the jig 10 can support the lens 110 more stably, and can reduce the problem of the first connection portion 16 being damaged due to a large force, thereby improving the process yield.

It is added that when the inner diameter RI of the carrier plate 12 is larger than the diameter R110 of the lens 110, the lens 110 is mainly supported by the first connection portion 16 (as shown in FIG. 3C), and the peripheral area A2 of the lens 110 does not have The annular gap area A22 shown in FIG. 1B (as shown in FIG. 3B). However, in another embodiment, the inner diameter RI of the carrier plate 12 can also be made smaller than the diameter R110 of the lens 110 to improve the stability of the support and reduce the problem of the first connection portion 16 being damaged due to a large force. Under this architecture, the peripheral region A2 of the lens 110 has a ring-shaped gap region A22. The following embodiments are applicable to this improvement, which will not be described in detail below.

Please refer to FIGS. 4A and 4B. In the jig 10 of FIG. 4A, the number of the at least one first connection portion 16 is two. Each first connection portion 16 includes a first sub-connection portion 16C in addition to the first sub-connection portions 16A and 16B. The first sub-connection portion 16B is connected to the first sub-connection portion 16A and the first sub-connection portion 16C. between. In addition, the included angle θ3 between the orthographic projections of the first connecting portion 16 on the reference plane R1 (also the included angle between the orthographic projections of the first sub-connected portion 16A on the reference plane R1) is, for example, 180 degrees.

In the optical lens 100 of FIG. 4B, the number of the at least one first strip-shaped void area A21 is also two. Each of the first stripe-shaped void regions A21 includes a first sub-region A21C in addition to the first sub-regions A21A and A21B. The first sub-region A21C corresponds to the first sub-connection portion 16C, and the first sub-region A21B is connected to Between the first sub-region A21A and the first sub-region A21C. In addition, the angle θ4 between the orthographic projections of the first strip-shaped void region A21 on the reference plane R2 (also the angle between the orthographic projections of the first sub-region A21A on the reference plane R2) is, for example, 180 degrees.

Under the above-mentioned structure, the jig 10 can support the lens 110 more stably, and can reduce the problem of the first connection portion 16 being damaged due to a large force, thereby improving the process yield. In addition, with the proper design of the included angle θ1, the problem that the lens 110 is dropped due to vibration can be improved.

Please refer to FIGS. 5A and 5B. In the jig 10 of FIG. 5A, the number of the at least one first connecting portion 16 is three, and the shape of each first connecting portion 16 is a straight bar. The orthographic projection of each first connecting portion 16 on the reference plane R1 extends, for example, in the radial direction DR of the shielding plate 14, and the included angle θ3 between the orthographic projections of the first connecting portion 16 on the reference plane R1 is, for example, 120 degrees.

In the optical lens 100 of FIG. 5B, the number of the at least one first stripe-shaped void region A21 is also three, and the shape of each first stripe-shaped void region A21 is a straight strip. The orthographic projection of each first strip-shaped void region A21 on the reference plane R2 extends, for example, along the radial direction of the central region A1 (same as the radial DR of the shielding plate 14), and the first strip-shaped void region A21 on the reference plane R2 The included angle θ4 between the orthographic projections is, for example, 120 degrees.

Under the above-mentioned structure, the jig 10 can support the lens 110 more stably, and can reduce the problem of the first connection portion 16 being damaged due to a large force, thereby improving the process yield. In addition, compared to FIG. 4A, the problem of the lens 110 falling off due to vibration is improved by the design of a specific included angle θ1. And the effect is better than the design of FIG. 4A.

Please refer to FIGS. 6A and 6B. In the jig 10 of FIG. 6A, the number of the at least one first connecting portion 16 is three. Each first connection portion 16 includes a first sub-connection portion 16C in addition to the first sub-connection portions 16A and 16B. The first sub-connection portion 16B is connected to the first sub-connection portion 16A and the first sub-connection portion 16C. between. In addition, the included angle θ3 between the orthographic projections of the first connecting portion 16 on the reference plane R1 (also the included angle between the orthographic projections of the first sub-connected portion 16A on the reference plane R1) is, for example, 120 degrees.

In the optical lens 100 of FIG. 6B, the number of the at least one first strip-shaped void region A21 is also three. Each of the first stripe-shaped void regions A21 includes a first sub-region A21C in addition to the first sub-regions A21A and A21B. The first sub-region A21C corresponds to the first sub-connection portion 16C, and the first sub-region A21B is connected to Between the first sub-region A21A and the first sub-region A21C. In addition, the included angle θ4 between the orthographic projections of the first strip-shaped void region A21 on the reference plane R2 (also the included angle between the orthographic projections of the first sub-region A21A on the reference plane R2) is, for example, 120 degrees.

Under the above-mentioned structure, the jig 10 can support the lens 110 more stably, and can reduce the problem of the first connection portion 16 being damaged due to a large force, thereby improving the process yield. In addition, the jig 10 can also improve the problem that the lens 110 is dropped due to vibration. In addition, compared to the design of FIG. 5B, the multi-segment design of the first stripe-shaped void region A21 in FIG. 6B helps reduce stray light passing through the peripheral region A2 of the lens 110 through the first stripe-shaped void region A21, thereby suppressing specific The angle stray light improves the imaging quality of the optical imaging lens to which the optical lens 100 is applied.

Referring to FIGS. 7A and 7B, in the jig 10 of FIG. 7A, the number of the at least one first connection portion 16 is two. Each first connection portion 16 includes a first sub-connection portion 16C in addition to the first sub-connection portions 16A and 16B. The first sub-connection portion 16B is connected to the first sub-connection portion 16A and the first sub-connection portion 16C. between. In addition, the included angle θ3 between the orthographic projections of the first connecting portion 16 on the reference plane R1 (also the included angle between the orthographic projections of the first sub-connected portion 16A on the reference plane R1) is, for example, 120 degrees.

In the optical lens 100 of FIG. 7B, the number of the at least one first strip-shaped void region A21 is also two. Each of the first stripe-shaped void regions A21 includes a first sub-region A21C in addition to the first sub-regions A21A and A21B. The first sub-region A21C corresponds to the first sub-connection portion 16C, and the first sub-region A21B is connected to Between the first sub-region A21A and the first sub-region A21C. In addition, the included angle θ4 between the orthographic projections of the first strip-shaped void region A21 on the reference plane R2 (also the included angle between the orthographic projections of the first sub-region A21A on the reference plane R2) is, for example, 120 degrees.

The jig 10 further includes at least one second connecting portion 18 located in the opening O. The at least one second connecting portion 18 is connected to the carrier plate 12 and is not connected to the shielding plate 14. The at least one second connecting portion 18 is adapted to support the peripheral area A2 of the lens 110 and defines at least one second strip-shaped void area A23 in the peripheral area A2 that is not connected to the central area A1. In detail, during the coating process, in addition to the shielding plate 14 and the at least one first connection portion 16 being shielded to the coating material, the at least one second connection portion 18 is also shielded to the coating material. In the optical lens 100 formed by the jig 10, the at least one optical layer 120 exposes the at least one second connection portion in addition to the central area A1 and the at least one first connection portion 16. 18 shaded areas. In detail, the peripheral area A2 will form at least one second strip-shaped void area A23 corresponding to the at least one second connecting portion 18. The at least one second stripe-shaped void area A23 is connected to the peripheral edge P of the lens 110 and is not connected to the central area A1, and the at least one optical layer 120 further exposes the at least one second stripe-shaped void area A23, respectively. .

In this embodiment, the number of the at least one second connection portion 18 is one. The second connection portion 18 may include a plurality of second sub-connection portions (such as the second sub-connection portions 18A, 18B) connected in series with each other. The included angle θ5 between the orthographic projections of the two mutually connected second sub-connecting portions 18A, 18B on a reference plane R1 perpendicular to the optical axis direction DT of the optical lens 100 falls within a range of 120 degrees to 150 degrees, for example.

The number of the at least one second stripe-shaped void area A23 is also one. The second strip-shaped gap region A23 may include a plurality of second sub-regions (such as the second sub-regions A23A, A23B) connected in series. The shape and position of the second sub-region A23A correspond to the second sub-connection portion 18A, and the first The shape and position of the second sub-region A23B correspond to the second sub-connecting portion 18B. The included angle θ6 between the orthographic projections of the two interconnected second subregions A23A, A23B on a reference plane R2 perpendicular to the optical axis direction DT of the optical lens 100 falls within a range of 120 degrees to 150 degrees, for example.

Under the above-mentioned structure, the jig 10 can support the lens 110 more stably, and can reduce the problem of the first connection portion 16 being damaged due to a large force, thereby improving the process yield. In addition, the jig 10 can also improve the problem that the lens 110 is dropped due to vibration. In addition, compared to the design of FIG. 6B, the second stripe-shaped void area A23 and its multi-stage design in FIG. 7B help to further reduce the stray light at a specific angle, and the at least one optical layer 120 is added compared to FIG. 6B. Covering the peripheral area A2 makes the imaging quality better.

In summary, the beneficial effect of the embodiments of the present invention is that in the optical lens, since the optical layer is directly formed on the lens, the optical lens can maintain an ideal assembly compared with the additional light shielding element provided outside the lens. With accuracy, the optical performance of the surrounding area is improved. In addition, by appropriately designing the connection portion (such as the first connection portion or the second connection portion) of the jig for making the optical lens, in addition to improving the coverage of the at least one optical film, It can also improve the yield rate of the optical lens and improve the problem of the lens falling due to vibration during the coating process.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

10‧‧‧ Jig
12‧‧‧ Carrier Board
14‧‧‧shield
16‧‧‧First connection
16A, 16B, 16C‧‧‧First Sub-connection
18‧‧‧Second connection section
18A, 18B‧‧‧Second Sub Connection
100‧‧‧ Optical Lenses
110‧‧‧Lens
120‧‧‧ Optical Layer
122‧‧‧first optical layer
124‧‧‧second optical layer
A1‧‧‧Central Area
A2‧‧‧Peripheral area
A21‧‧‧The first stripe-shaped void area
A21A, A21B, A21C
A22‧‧‧Circular void area
A23‧‧‧Second stripe void area
A23A, A23B ‧‧‧Second Subregion
C14, CA1‧‧‧ Center
CP1‧‧‧first connection point
CP2‧‧‧Second connection point
DR‧‧‧Radial
DT‧‧‧direction of optical axis
O‧‧‧ opening
P‧‧‧periphery
r1‧‧‧first radius line
r2‧‧‧ second radius line
R1, R2‧‧‧ reference plane
R110‧‧‧diameter
RI‧‧‧Inner diameter
S1, S2‧‧‧ surface θ1, θ2, θ3, θ4, θ5, θ6‧‧‧ angle
A-A'‧‧‧ hatch

FIG. 1A is a schematic top view of a jig according to a first embodiment of the present invention. FIG. 1B is a schematic top view of an optical lens according to a first embodiment of the present invention. FIG. 1C is a schematic cross-sectional view after the jig of FIG. 1A and the lens of FIG. 1B are assembled. 2A to 2C are schematic diagrams of the first to third cross sections of the section line A-A 'in FIG. 1B. 3A is a schematic top view of a jig according to a second embodiment of the present invention. 3B is a schematic top view of an optical lens according to a second embodiment of the present invention. 3C is a schematic cross-sectional view of the jig of FIG. 3A and the lens of FIG. 3B after assembly. 4A is a schematic top view of a jig according to a third embodiment of the present invention. 4B is a schematic top view of an optical lens according to a third embodiment of the present invention. 5A is a schematic top view of a jig according to a fourth embodiment of the present invention. 5B is a schematic top view of an optical lens according to a fourth embodiment of the present invention. 6A is a schematic top view of a jig according to a fifth embodiment of the present invention. 6B is a schematic top view of an optical lens according to a fifth embodiment of the present invention. 7A is a schematic top view of a jig according to a sixth embodiment of the present invention. 7B is a schematic top view of an optical lens according to a sixth embodiment of the present invention.

100‧‧‧ Optical Lenses

110‧‧‧Lens

120‧‧‧ Optical Layer

A1‧‧‧Central Area

A2‧‧‧Peripheral area

A21‧‧‧The first stripe-shaped void area

A21A, A21B‧‧‧ the first subregion

A22‧‧‧Circular void area

CA1‧‧‧Center

CP1‧‧‧first connection point

DR‧‧‧Radial

DT‧‧‧direction of optical axis

P‧‧‧periphery

r1‧‧‧first radius line

R2‧‧‧reference plane

θ2‧‧‧ included angle

Claims (9)

An optical lens includes: a lens having a central area and a peripheral area surrounding the central area; and at least one optical layer disposed on the lens, each optical layer being located in the peripheral area and exposing the central area, The peripheral region has at least one first stripe-shaped void region connected to the central region, and each of the optical layers exposes the at least one first stripe-shaped void region. The optical lens according to item 1 of the scope of patent application, wherein a point connecting each of the first stripe-shaped void regions and the center region is defined as a first connection point, and the center of the lens passes the first connection in a radial direction. The straight line of the point is a first radius line, and the included angle between each of the first stripe-shaped void areas and the orthographic projection of the first radius line on a reference plane perpendicular to the optical axis direction of the optical lens is 30 degrees To 60 degrees. The optical lens according to item 1 of the scope of the patent application, wherein each of the first strip-shaped gap regions is connected between the central region and a peripheral edge of the lens. The optical lens according to item 1 of the scope of patent application, wherein the peripheral region further has at least one second strip-shaped void region not connected to the central region, and each of the optical layers further exposes the at least one second strip-shaped Gap area. The optical lens according to item 4 of the scope of patent application, wherein each of the first stripe-shaped void regions is connected between the center region and the periphery of the lens, and each of the second stripe-shaped void regions is connected with the periphery of the lens . A jig adapted to fix the lens of the optical lens during the process of making the optical lens according to item 1 of the scope of patent application, the jig includes: a carrier plate having at least one opening; a shielding plate, Located in the opening and shielding the central region of the lens; and at least one first connecting portion connecting the carrier board and the shielding plate, wherein the at least one first connecting portion supports the peripheral region of the lens and shields the at least one The first stripe-shaped void area. The jig according to item 6 of the scope of patent application, wherein a point where each of the first connecting portions is connected to the shielding plate is defined as a second connecting point, and a center of the shielding plate passes through the second connecting point in a radial direction. The straight line is a second radius line, and the included angle between each of the first connecting portion and the orthographic projection of the second radius line on a reference plane perpendicular to the optical axis direction of the optical lens is 30 degrees to 60 degrees In the range. The jig according to item 6 of the scope of patent application, wherein an inner diameter of the carrier plate is larger than a diameter of the lens. The jig according to item 6 of the scope of patent application, further comprising: at least one second connecting portion located in the opening, connected to the carrier plate, and not connected to the shielding plate, wherein the at least one second connecting portion The peripheral area supporting the lens is defined in the peripheral area and at least one second strip-shaped void area is defined which is not connected to the central area.