CN106199893B - Optical Lenses and Electronic Devices - Google Patents
Optical Lenses and Electronic Devices Download PDFInfo
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- CN106199893B CN106199893B CN201510240771.2A CN201510240771A CN106199893B CN 106199893 B CN106199893 B CN 106199893B CN 201510240771 A CN201510240771 A CN 201510240771A CN 106199893 B CN106199893 B CN 106199893B
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Abstract
The invention discloses an optical lens and an electronic device. The optical lens includes at least one bi-color molded lens. The double-color molded lens comprises a light-transmitting part and a light-absorbing part, wherein the light-transmitting part is provided with an optical effective area, and the light-transmitting part and the light-absorbing part are respectively made of plastic materials with different colors through injection molding. The bi-color molded lens further includes an axial coupling surface for overlapping an adjacent lens in the optical lens. The invention also discloses an electronic device with the optical lens.
Description
Technical Field
The present invention relates to an optical lens with a two-color molded lens, and more particularly to an optical lens applied to an electronic device.
Background
In a general portable camera device, such as a mobile phone, in order to meet the demand for thinning, the size, thickness and weight of an optical lens are greatly reduced, but the number of components in the camera device is increased in order to improve the imaging quality. Therefore, it is a very difficult problem to control the stray light without impairing the centering accuracy of the optical element.
Known miniature lenses often use lens assembly structures, such as shown in US patent publication No. US6819508, to ensure lens assembly centering accuracy. When stray light appears in the lens, the stray light can be improved by additionally coating ink or adding a shading plate. However, both methods are limited in practical use.
In detail, in a general inking operation, the shape and size of a surface are not controlled in a small scale, so that the inking part often has a size change of micrometer (micron meter) or more. Therefore, when the ink is applied to the assembly surface, problems such as reduction in centering accuracy of lens assembly and inclination of the lens are easily caused, and image quality is reduced.
If a light shielding plate is additionally arranged, the size control capability is better than that of the common ink coating method, but the relative reflectivity is higher, the usable shielding area is reduced under the condition of directly embedding with the lens, and the control effect of stray light is limited.
Therefore, it is an important subject of the present manufacturing industry of portable camera device to satisfy the requirements of both the centering accuracy and the stray light control and overcome the mutual restriction and influence.
Disclosure of Invention
The invention provides an optical lens and an electronic device, which comprise a double-color molded lens, wherein the double-color molded lens passes through a light-transmitting part and a light-absorbing part which are arranged in the double-color molded lens, and meanwhile stray light is improved and centering precision is improved.
According to the present invention, an optical lens is provided, which has an optical axis and comprises at least one lens and at least one bi-color molded lens. The two plastic material parts with different colors of the double-color molded lens are manufactured by two-time injection molding and comprise a light-transmitting part, a light-absorbing part and at least one axial connecting surface. The light-transmitting part is provided with an optical effective area. The light absorption part is formed through the first injection molding, and the light transmission part is formed through the second injection molding. At least one axial connecting surface is arranged on one side of the two-color molded lens, and the light absorption part is provided with an axial connecting surface which is lapped with the adjacent lens for aligning the centers of the two-color molded lens and the lens. Therefore, the effect of improving the centering accuracy can be achieved.
According to the optical lens, when the number of the axial connecting surfaces is at least two, the axial connecting surfaces can be respectively arranged on the light-transmitting part and the light-absorbing part. Therefore, the centers of the two-color molded lens and the adjacent lens can be aligned.
According to the optical lens assembly, the two-color molded lens may further include a vertical parting surface, which is located on the same side of the two-color molded lens as the axial connecting surface, and a vertical distance between the vertical parting surface and the optical axis is greater than a vertical distance between the axial connecting surface and the optical axis. In addition, two side surfaces of the light absorption part are respectively an inner side surface and an outer side surface, the inner side surface is connected with the light transmission part, and the vertical parting surface can be positioned on the outer side surface of the light absorption part as well as the axial connection surface. Therefore, the size precision of the bicolor molding lens can be improved.
In the optical lens assembly, the two-color molded lens has an outer diameter surface connecting the first side surface and the second side surface of the two-color molded lens, and the light-transmitting portion extends from the optically effective area of the two-color molded lens to the outer diameter surface, surrounds the periphery of the two-color molded lens, and forms a part of the outer diameter surface. Thereby promoting the positional accuracy of the outer diameter surface and the optical axis center.
According to the optical lens, an angle between the axial connecting surface and the direction of the optical axis is θ, which satisfies the following condition: 0 degrees < theta <40 degrees. Preferably, it can satisfy the following conditions: 5 degrees < theta <31 degrees. Therefore, the centering precision between the lenses can be improved.
According to the above optical lens, the light absorbing portion is transparent to infrared light. Therefore, the manufacturing yield of the optical lens is improved.
According to another aspect of the present invention, an electronic device includes a camera module. The camera module comprises the optical lens and the electronic photosensitive element, wherein the electronic photosensitive element is arranged on an imaging surface of the optical lens.
The present invention further provides an optical lens having an optical axis, and comprising at least one bi-color molded lens, which is made of two plastic materials with different colors and is formed by two-time injection molding, and comprises a light-transmitting portion, a light-absorbing portion and at least one axial connecting surface. The light-transmitting part is provided with an optical effective area. The light absorption part is formed through the first injection molding, and the light transmission part is formed through the second injection molding. At least one axial connecting surface is located on one side of the bi-color molded lens. The double-color molded lens is provided with an outer diameter surface which is connected with the first side surface and the second side surface of the double-color molded lens, the light transmitting part extends to the outer diameter surface from the optical effective area of the double-color molded lens and surrounds the periphery of the double-color molded lens to form one part of the outer diameter surface, and the light absorbing part is only positioned on one side surface of the first side surface and the second side surface of the double-color molded lens and is provided with the axial connecting surface. Therefore, the effect of improving the centering accuracy can be achieved. In addition, the outer diameter surface can be an outer diameter assembling surface which is used for connecting with the lens cone.
According to the optical lens, when the number of the axial connecting surfaces is at least two, the axial connecting surfaces can be respectively arranged on the light-transmitting part and the light-absorbing part. Therefore, the centers of the bicolor molding lens and the adjacent lens can be aligned.
According to the optical lens assembly, the bi-color molded lens further includes a vertical parting surface, the vertical parting surface and the axial connecting surface are located on the same side of the bi-color molded lens, and the vertical distance between the vertical parting surface and the optical axis is greater than the vertical distance between the axial connecting surface and the optical axis. In addition, the vertical parting plane can be positioned on the same side with the light absorption part. Furthermore, two side surfaces of the light absorption part are respectively an inner side surface and an outer side surface, the inner side surface is connected with the light transmission part, and the vertical parting surface and the axial connecting surface can be positioned on the outer side surface of the light absorption part. Therefore, the size precision of the bicolor molding lens can be improved.
According to the optical lens, the two-color molded lens may further include at least one horizontal connecting surface disposed on the light absorbing portion for overlapping with an adjacent lens in the optical lens, so that an inter-lens distance is provided between the two-color molded lens and the lens on the optical axis. Therefore, the distance between the lenses can be effectively controlled.
According to the optical lens described above, wherein the outer diameter of the two-color molded lens is ψ D, the following condition is satisfied: 2.5mm < ψ D <8.0 mm. Therefore, the outer diameter of the bicolor molding lens is properly controlled, and the dimensional stability is improved.
According to the optical lens described above, in which the outer diameter of the two-color molded lens is ψ D and the outer diameter of the light absorbing section is ψ po, the following conditions are satisfied: 0.5< psi po/psi D is less than or equal to 1.0. Therefore, a proper stray light absorption range can be provided.
According to another aspect of the present invention, an electronic device includes a camera module. The camera module comprises the optical lens and the electronic photosensitive element, wherein the electronic photosensitive element is arranged on an imaging surface of the optical lens.
Drawings
FIG. 1 is a schematic view of an optical lens system according to a first embodiment of the invention;
FIG. 2 is a schematic diagram showing an enlarged view of a two-color molded lens according to the optical lens of FIG. 1;
FIG. 3 is a schematic diagram showing parameters θ 1, θ 2, ψ po and ψ D in a bi-color molded lens according to the optical lens of FIG. 1;
FIG. 4A is a schematic diagram illustrating a first step of a method for manufacturing a bi-color molded lens according to a first embodiment of the invention;
FIG. 4B is a schematic diagram illustrating a second step of the method for manufacturing a bi-color molded lens according to the first embodiment of the invention;
FIG. 5 is a schematic enlarged view of a two-tone lens of an optical lens according to a second embodiment of the present invention;
FIG. 6 is a schematic enlarged view of a two-tone molded lens of an optical lens according to a third embodiment of the present invention;
FIG. 7 is a schematic enlarged view of a two-tone molded lens of an optical lens according to a fourth embodiment of the present invention; and
FIG. 8 is a schematic view illustrating a camera module of an electronic device according to a fifth embodiment of the invention.
[ notation ] to show
An optical lens: 100
A first lens: 110
A third lens: 130
A fourth lens: 140
A fifth lens: 150
Two-color molded lens: 120. 220, 310, 440
Light transmission part: 121. 221, 311, 441
An optically effective area: 121a, 221a, 311a, 441a
Light absorption portion: 122. 222, 312, 442
First side surface: 123. 223, 313, 443
A second side surface: 124. 224, 314, 444
Outer diameter surface: 125. 225, 315, 445
Axial connecting surface: 126. 127, 226, 227, 316
Horizontal connecting surface: 128. 129, 228, 229, 318
An electron-sensitive element: 160
A camera module: 50
A movable mold: 610
A first fixed mold: 620
A second fixed die: 630
Angle between axial connecting surface and optical axis: theta 1 and theta 2
Outer diameter of the two-color molded lens: psi D
Outer diameter of light absorbing portion: psi po
Vertical parting surface: PL1, PL2
Horizontal parting surface: PL3
Detailed Description
Referring to fig. 1, fig. 1 is a schematic diagram illustrating an optical lens 100 according to a first embodiment of the invention. As shown in fig. 1, the optical lens 100 is an optical lens 100 of a camera module for a mobile phone, wherein the camera module for the mobile phone includes the optical lens 100, an electronic sensor (not shown) and an infrared-cut Filter (not shown). The optical lens 100 includes five lens elements with refractive power, which are a first lens element 110, a two-color molded lens element 120 (i.e., a second lens element), a third lens element 130, a fourth lens element 140 and a fifth lens element 150 from a first side to a second side.
Referring to fig. 2, an enlarged schematic view of the two-color molded lens 120 of the optical lens 100 of fig. 1 is shown. Specifically, the two-color molded lens 120 is made of two plastic materials with different colors, and includes a light-transmitting portion 121 and a light-absorbing portion 122. The transparent portion 121 has an optically effective area 121a, and the transparent portion 121 is made of a transparent PC having a high refractive index. The optical absorption portion 122 is a second color, is connected to the light transmission portion 121, and is made of black PC. Therefore, the two-color molded lens 120 achieves two-color effects by using plastic materials with different colors as the light-transmitting portion 121 and the light-absorbing portion 122.
The two sides of the two-color molded lens 120 are a first side surface 123 and a second side surface 124, respectively, and an outer diameter surface 125 is connected to the first side surface 123 and the second side surface 124. The light-transmitting portion 121 extends from a paraxial region of the two-color molded lens 120 to the outer diameter surface 125 (i.e., from the optically effective region 121a to the outer diameter surface 125), and the outer diameter surface 125 at least includes the light-transmitting portion 121; that is, the light transmitting portion 121 surrounds the periphery of the two-color molded lens 120, and constitutes a part of the outer diameter surface 125. The outer diameter surface 125 of the two-color molded lens 120 of the present embodiment is equivalent to the light-transmitting portion 121. The outer diameter surface 125 can be an outer diameter assembly surface for connecting with the lens barrel. Therefore, the two-color molded lens 120 can be overlapped with other elements (such as a lens barrel) in the optical lens 100 through the outer diameter surface 125 to control the assembly of the lens center.
The light absorbing part 122 is located only on one side of the two-color molded lens 120 (in the first embodiment, the light absorbing part 122 is located on the first side surface 123 of the two-color molded lens 120).
The optical lens 100 may further include at least one axial connecting surface, and in the first embodiment, the optical lens 100 includes two axial connecting surfaces 126 and 127, which are located at two sides of the two-color molded lens 120 and respectively disposed on the light absorbing portion 122 and the light transmitting portion 121, for overlapping with the adjacent first lens 110 and the third lens 130, so that the center of the two-color molded lens 120 and the center of the lens (the first lens 110 and the third lens 130) are both located on the optical axis, thereby achieving the effect of aligning the lens centers.
The optical lens 100 may further include at least one horizontal connecting surface, and in the first embodiment, the optical lens 100 includes two horizontal connecting surfaces 128 and 129 located at two sides of the two-color molded lens 120, which are respectively disposed on the light absorbing portion 122 and the light transmitting portion 121 for overlapping with adjacent lenses (the first lens 110 and the third lens 130) in the optical lens 100. Therefore, the two-color molded lens 120 and the lenses (the first lens 110 and the third lens 130) have an inter-lens distance on the optical axis.
The optical lens 100 may include at least one axial connecting surface, and an angle between the axial connecting surface and the direction of the optical axis is θ, which satisfies the following condition: 0 degrees < theta <40 degrees. Preferably, it can satisfy the following conditions: 5 degrees < theta <31 degrees. Referring to fig. 3, parameters θ 1, θ 2, ψ po and ψ D of the two-color molded lens 120 according to the optical lens 100 of fig. 1 are illustrated. As can be seen from fig. 3, in the first embodiment, the optical lens 100 includes two axial connecting surfaces 126 and 127, where an angle between the axial connecting surface 126 and the direction of the optical axis is θ 1, θ 1 is 10 degrees, an angle between the axial connecting surface 127 and the direction of the optical axis is θ 2, and θ 2 is 30 degrees. Therefore, the lens assembly can be more stably overlapped with the first lens 110 and the third lens 130, thereby achieving the effect of aligning the centers of the lenses. Incidentally, the surface angles of the lenses (the first lens 110 and the third lens 130) adjacent to and overlapping the two-color molded lens 120 at the overlapping portion also change with θ 1 and θ 2.
The outer diameter of the two-color molded lens 120 is ψ D and the outer diameter of the light absorbing part 122 is ψ po, which satisfy the following conditions: 2.5mm < ψ D <8.0 mm; and 0.5< ψ po/ψ D ≦ 1.0. In the first embodiment, ψ D is 3.76mm and ψ po/ψ D is 0.91.
With reference to fig. 4A and 4B, fig. 4A is a schematic diagram illustrating a first step of a method for manufacturing a bi-color molded lens 120 according to a first embodiment of the invention, and fig. 4B is a schematic diagram illustrating a second step of the method for manufacturing the bi-color molded lens 120 according to the first embodiment of the invention. As shown in fig. 4A, the two-color molded lens 120 is manufactured by forming the light absorbing portion 122 in a cavity between the movable mold 610 and the first fixed mold 620 by injection molding. Next, as shown in fig. 4B, in the second step, the movable mold 610 is moved to the second fixed mold 630 to form another mold cavity, and the formed light absorbing part 122 is linked to the other mold cavity, and then the light-transmitting part 121 is formed by another injection molding. Therefore, the two plastic materials are used for two-time injection molding to manufacture the two-color molded lens with two colors.
Generally, according to the requirement of a mold for manufacturing a bi-color molded lens, after the mold is opened and closed for molding, a mold parting surface is formed on the bi-color molded lens, wherein the mold parting surface is located on the outer diameter of the bi-color molded lens and extends in a horizontal direction and is a horizontal mold parting surface, and the mold parting surface is located on the first side surface or the second side surface of the bi-color molded lens and extends in a vertical direction and is a vertical mold parting surface.
In this embodiment, the molded bi-color molded lens 120 further includes two vertical parting planes PL1 and PL2 and a horizontal parting plane PL 3. The vertical split surface PL1 is provided on the outer side surface of the light absorbing portion 122 (the two side surfaces of the light absorbing portion 122 are an inner side surface and an outer side surface, respectively, the inner side surface is connected to the light transmitting portion 121, and the outer side surface is the other surface opposite to the inner side surface), the vertical split surface PL2 is provided on the outer side surface of the light transmitting portion 121 (the two side surfaces of the light transmitting portion 121 are an inner side surface and an outer side surface, respectively, the inner side surface is connected to the light absorbing portion 122, and the outer side surface is the other surface opposite to the inner side surface), and the horizontal split surface PL3 is provided on the outer diameter surface. The perpendicular parting plane PL1 and the axial connecting plane 126 are both located on the outer side surface of the light absorbing part 122 (i.e., on the same side as the two-color molded lens 120), and the perpendicular distance between the perpendicular parting plane PL1 and the optical axis is greater than the perpendicular distance between the axial connecting plane 126 and the optical axis. The vertical parting plane PL2 and the axial connecting plane 127 are both located on the outer side surface of the light-transmitting portion 121 (i.e., on the same side as the two-color molded lens 120), and the vertical distance between the vertical parting plane PL2 and the optical axis is greater than the vertical distance between the axial connecting plane 127 and the optical axis. By providing the mold parting surface, the accuracy of the lens dimension can be improved.
Incidentally, in the first step of the injection molding, the plastic material of the light absorbing portion 122 may be injected from the interface between the light transmitting portion 121 and the light absorbing portion 122, or may be injected from the outer side of the two-color molded lens 120, and in the second step, the material of the light transmitting portion 121 is injected from the outer diameter surface of the lens toward the optical axis direction.
In addition, the transparent portion 121 may be made of a PC having a high refractive index, such as SP series of imperial people and EP series of MGC, Polyester, such as OKP series of OGC, or other conventional optical plastic materials. The optical absorption portion can be made of black PC (such as Diren L-1225Y) or transparent material capable of absorbing visible light and allowing infrared light to pass through (i.e. transparent to infrared light) in combination with the light-transmitting portion 121. Of course, the material of the light absorbing part 121 is not limited to black PC, but when the light transmitting part is made of a material other than PC, such as COC, COP, PMMA, etc., the light absorbing part 122 may be made of the same base material as the light transmitting part 121, and may be mixed with an appropriate black pigment to form a black plastic material as the material of the light absorbing part 122. The camera module or the general camera module of the invention comprises an infrared filtering filter besides the optical lens and the electronic photosensitive element, and the effect of the light absorption part can not be influenced after the camera module or the general camera module is matched with the appropriate infrared filtering filter.
Fig. 5 is an enlarged schematic view of a two-color molded lens 220 of an optical lens according to a second embodiment of the invention. In fig. 5, an optical lens (not shown) is an optical lens of a camera module for a mobile phone, and other components included in the camera module for a mobile phone are the same as those in the first embodiment, which are not repeated herein. In the second embodiment of the present invention, the optical lens includes at least one lens and a two-color molded lens 220, and the configuration relationship between the two-color molded lens 220 and the lens is as disclosed in fig. 1, so that it will not be illustrated and described herein.
As shown in fig. 5, in the second embodiment, the two-color molded lens 220 is made of plastic material with two different colors, and includes a light-transmitting portion 221 and a light-absorbing portion 222. The light-transmitting portion 221 has an optically effective region 221a, wherein the material of the light-transmitting portion 221 is a transparent PC with a high refractive index. The optical absorption portion 222 is made of PC that can absorb visible light and allow infrared light to pass through (i.e., is transparent to infrared light). Therefore, the two-color molded lens 220 achieves two-color effects by using plastic materials with different colors as the light-transmitting portion 221 and the light-absorbing portion 222.
The two sides of the bi-color molded lens 220 are a first side surface 223 and a second side surface 224, respectively, and an outer diameter surface 225 is connected to the object side surface 223 and the image side surface 224. The light-transmitting portion 221 extends from a paraxial region of the two-color molded lens 220 to the outer diameter surface 225 (i.e., from the optically effective region 221a to the outer diameter surface 225), and the outer diameter surface 225 is composed of the light-transmitting portion 221 and the light-absorbing portion 222. Therefore, the bi-color molded lens 220 can be overlapped with other elements in the optical lens through the outer diameter surface 225 to control the assembly of the lens centering.
The light absorbing part 222 is located only on one side of the two-color molded lens 220 (in the second embodiment, the light absorbing part 222 is located on the first side surface 223 of the two-color molded lens 220). Therefore, in the manufacturing and assembling process, on the premise that the light rays of the operating wave band of the camera module have different penetration rates through the light ray absorption part 222 and the light transmission part 221, the internal homogeneity degree of the formed product can be observed through the light rays of the non-operating wave band, correct manufacturing of the light ray absorption part is ensured, and the manufacturing yield is improved.
In the second embodiment, the optical lens includes two axial connecting surfaces 226 and 227, which are located at two sides of the two-color molded lens 220, and are respectively disposed on the light absorbing portion 222 and the light transmitting portion 221 for overlapping with the adjacent lenses (such as the first lens and the third lens), so that the center of the two-color molded lens 220 and the center of the adjacent lens are both located on the optical axis, thereby achieving the effect of aligning the lens centers.
In the second embodiment, the optical lens includes two horizontal connecting surfaces 228 and 229, which are located at two sides of the two-color molded lens 220, and are respectively disposed on the light absorbing portion 222 and the light transmitting portion 221 for overlapping with adjacent lenses (such as the first lens and the third lens) in the optical lens. Therefore, the distance between the two-color molded lens 220 and the adjacent lens on the optical axis is equal.
The two-color molded lens 220 of the second embodiment further includes two vertical parting planes PL1, PL2 and a horizontal parting plane PL 3. The vertical parting plane PL1 is disposed on the outer side surface of the light absorbing portion 222 and on the same side as the axial connecting surface 226, and the vertical distance between the vertical parting plane PL1 and the optical axis is greater than the vertical distance between the axial connecting surface 126 and the optical axis. The vertical parting plane PL2 is disposed on the outer side surface of the light-transmitting portion 221, the vertical parting plane PL2 is located on the same side as the axial connecting surface 227, and the vertical distance between the vertical parting plane PL2 and the optical axis is greater than the vertical distance between the axial connecting surface 227 and the optical axis.
Referring to fig. 3, the parameters θ 1, θ 2, ψ po and ψ D of the bi-color molded lens 120 of the second embodiment are defined the same as those of the first embodiment, and will not be further illustrated and described. The parameters and condition values for the second embodiment are as follows:
| theta 1 (degree) | Theta 2 (degree) | ψpo(mm) | ψpo/ψD |
| 20 | 20 | 3.76 | 1.0 |
In addition, referring to fig. 4A and 4B, the manufacturing method of the two-color molded lens 220 of the second embodiment is the same as that of the first embodiment, and is not shown and described in detail herein.
Fig. 6 is an enlarged schematic view of a two-color molded lens 310 of an optical lens according to a third embodiment of the invention. In fig. 6, an optical lens (not shown) is an optical lens of a camera module for a mobile phone, and other components included in the camera module for a mobile phone are the same as those in the first embodiment, which are not repeated herein. In the third embodiment of the present invention, the optical lens includes at least one lens and the two-color molded lens 310, and the two-color molded lens 310 is disposed at a position closest to the first side among all the lenses and can be regarded as the first lens, and the arrangement relationship of other lenses and other elements in the optical lens is as disclosed in fig. 1, so that it will not be illustrated and described herein.
As shown in fig. 6, in the third embodiment, the two-color molded lens 310 is made of plastic materials with two different colors, and includes a light-transmitting portion 311 and a light-absorbing portion 312. The light-transmitting portion 311 has an optically effective area 311a, wherein the light-transmitting portion 311 is made of COC. The optical absorption portion 312 is located on the second side surface 314 of the two-color molded lens 310 and is made of black COC. Therefore, the two-color molded lens 310 achieves two-color effects by using plastic materials with different colors as the light-transmitting portion 311 and the light-absorbing portion 312.
The two sides of the two-color molded lens 310 are a first side surface 313 and a second side surface 314, respectively, and an outer diameter surface 315 is connected to the first side surface 313 and the second side surface 314. The light-transmitting portion 311 extends from a paraxial region of the two-color molded lens 310 to an outer diameter surface 315 (i.e., from the optically effective region 311a to the outer diameter surface 315), and the outer diameter surface 315 is formed by the light-transmitting portion 311. Therefore, the bi-color molded lens 310 can be overlapped with other elements (such as a lens barrel) in the optical lens through the outer diameter surface 315, and the assembly of the lens centering is controlled.
In the third embodiment, the two-color molded lens 310 includes an axial connecting surface 316 and a horizontal connecting surface 318, wherein the axial connecting surface 316 and the horizontal connecting surface 318 are disposed on the light absorbing portion 312 for overlapping with an adjacent lens (e.g., the second lens). Therefore, the double effects of aligning the center of the lens and configuring the distance between the lenses can be achieved simultaneously.
In the third embodiment, the two-color molded lens 310 includes a vertical parting plane PL1 disposed on the outer side surface of the light absorbing portion 312 and located on the outer side surface of the light absorbing portion together with the axial connecting plane 316, and the vertical parting plane PL1 is located at a greater vertical distance from the optical axis than the vertical distance from the axial connecting plane 316 to the optical axis.
Referring to fig. 3, the parameters θ, ψ po and ψ D in the bi-color molded lens 310 of the third embodiment are defined the same as those in the first embodiment, and will not be further illustrated and described. In particular, the bi-color molded lens 310 of the third embodiment includes only one axial connecting surface 316, so that it includes only one angle θ, and the definition and position of the angle θ can refer to the angle θ 1 of the first embodiment. The values of the parameters and conditions for the third embodiment are as follows:
| theta (degree) | ψpo(mm) | ψpo/ψD |
| 10 | 3.6 | 0.9 |
In addition, referring to fig. 4A and 4B, the manufacturing method of the bi-color molded lens 310 of the third embodiment is the same as that of the first embodiment, and is not shown and described in detail herein.
Fig. 6 is an enlarged schematic view of a two-color molded lens 310 of an optical lens according to a third embodiment of the invention. In fig. 6, an optical lens (not shown) is an optical lens of a camera module for a mobile phone, and other components included in the camera module for a mobile phone are the same as those in the first embodiment, which are not repeated herein. In the third embodiment of the present invention, the optical lens includes at least one lens and the two-color molded lens 310, and the two-color molded lens 310 is disposed at a position closest to the first side among all the lenses and can be regarded as the first lens, and the arrangement relationship of other lenses and other elements in the optical lens is as disclosed in fig. 1, so that it will not be illustrated and described herein.
Fig. 7 is an enlarged schematic view of a two-color molded lens 440 of an optical lens according to a fourth embodiment of the invention. In fig. 7, an optical lens (not shown) is an optical lens of a camera module for a mobile phone, and other components included in the camera module for a mobile phone are the same as those in the first embodiment, which are not repeated herein. In the fourth embodiment of the present invention, the optical lens includes four lenses and a two-color molded lens 440, and the two-color molded lens 440 is disposed at a position from the first side to the fourth lens at the second side, which can be regarded as the fourth lens, and the arrangement relationship of other lenses and other elements in the optical lens is as disclosed in fig. 1, so that it will not be illustrated and described herein.
As shown in fig. 7, in the fourth embodiment, the two-color molded lens 440 is made of plastic materials with two different colors, and includes a light-transmitting portion 441 and a light-absorbing portion 442. The transparent portion 441 has an optically active area 441a, wherein the transparent portion 441 is made of COC. The optical absorption portion 442 is located on the first side 443 of the two-color molded lens 440 and is made of black COC. Therefore, the two-color molded lens 440 achieves two-color effects by using plastic materials with different colors for the light-transmitting portion 441 and the light-absorbing portion 442.
The two sides of the bi-color molded lens 440 are a first side surface 443 and a second side surface 444, respectively, and have an outer diameter surface 445 connecting the first side surface 443 and the second side surface 444. The light-transmitting portion 441 extends from a paraxial region of the two-color molded lens 440 to the outer diameter surface 445 (i.e., from the optically effective region 441a to the outer diameter surface 315), and the outer diameter surface 445 is formed by the light-transmitting portion 441. Therefore, the bi-color molded lens 440 can be overlapped with other elements (such as a lens barrel) in the optical lens through the outer diameter surface 445 to control the assembly of the lens center.
Referring to fig. 3, the parameters ψ po and ψ D in the bi-color molded lens 440 of the fourth embodiment are defined the same as those of the first embodiment, and will not be further illustrated and described. The values of the parameters and conditions for the fourth embodiment are as follows:
| ψpo(mm) | ψpo/ψD |
| 4.78 | 0.94 |
in addition, referring to fig. 4A and 4B, the manufacturing method of the bi-color molded lens 440 of the fourth embodiment is the same as that of the first embodiment, and is not shown or described in detail herein.
Fig. 8 is a schematic view illustrating a camera module 50 of an electronic device according to a fifth embodiment of the invention. As can be seen in fig. 8. The electronic device (not shown) is a mobile phone, and the camera module 50 is a camera module for the mobile phone. The camera module 50 includes an optical lens 100 and an electronic photosensitive element 160, wherein the electronic photosensitive element 160 is disposed on an image plane (not shown) of the optical lens 100. In the fifth embodiment, the optical lens 100 is the optical lens 100 of the first embodiment in fig. 1, and therefore, the description thereof is omitted.
In addition, the present invention is not limited to the optical lens having five refractive power lenses, and the number of the refractive power lenses can be set to 3, 4, 5, 6 or other numbers as required. Of course, the electronic device is not limited to a mobile phone, and may be other types of portable electronic devices, such as a tablet computer.
Moreover, the two-color molded lens element included in the optical lens assembly of the present invention may be disposed at a position of the second lens element from the object side to the image side, or at a position of the second lens element from the image side to the object side. Certainly, if the light source is arranged at other positions, the light source still has the effects of suppressing stray light and improving imaging quality. When the optical lens has a wide angle of view, the two-color molding lens is disposed between the object side and the image side as the first lens, and the effect thereof can be exhibited.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (21)
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| CN202110530045.XA CN113204090B (en) | 2015-04-27 | 2015-05-13 | Optical lenses and electronic devices |
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| CN201510204828 | 2015-04-27 | ||
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| CN106199893B true CN106199893B (en) | 2021-06-04 |
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| TWI614518B (en) * | 2016-05-09 | 2018-02-11 | 大立光電股份有限公司 | Imaging lens assembly and electronic device |
| TWI598614B (en) * | 2016-12-14 | 2017-09-11 | 大立光電股份有限公司 | Optical lens assembly with dual molded lens element and electronic device including same assembly |
| TWI621891B (en) * | 2017-05-25 | 2018-04-21 | 大立光電股份有限公司 | Dual-molded circular optical element, imaging lens assembly, imaging device, and electronic device |
| CN109819143A (en) * | 2017-11-22 | 2019-05-28 | 浙江舜宇智能光学技术有限公司 | Anti- spectrum countermeasure set and its manufacturing method and camera with anti-spectrum countermeasure set |
| TWI647480B (en) * | 2018-01-30 | 2019-01-11 | 大立光電股份有限公司 | Imaging lens and electronic device with two-color molded optical components |
| JP7370713B2 (en) * | 2019-03-07 | 2023-10-30 | 株式会社小糸製作所 | optical unit |
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| CN106199893A (en) | 2016-12-07 |
| CN113204090A (en) | 2021-08-03 |
| CN113204090B (en) | 2023-06-13 |
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