TW201723556A - Optical lens assembly and electronic device - Google Patents

Abstract

An optical lens assembly includes a dual molded lens which includes a transparent portion and a light absorbing portion. The transparent portion has a light effective region, and the transparent portion and a light absorbing portion are made of plastic material by injection molding method and have different colors. The dual molded lens further includes an axial assembling surface for connecting with the lens elements adjacent thereto.

Description

Optical lens and electronic device

The present invention is an optical lens having a two-color molded lens, and more particularly to an optical lens for use in an electronic device.

In general portable video cameras, such as mobile phones, the size, thickness, and weight of the optical lens are greatly reduced in order to pursue the demand for thinning, but at the same time, the number of components in the image pickup device is increased in order to improve the image quality. Therefore, it is a very difficult subject to control the stray light without detracting from the accuracy of the optical component.

Conventional small lenses often use a lens assembly structure as shown in U.S. Patent Publication No. US Pat. No. 6,819,508 to ensure lens assembly centering accuracy. When stray light appears inside the lens, it can be improved by adding additional ink or adding a visor. However, both methods are limited in practical use.

In detail, in the general ink application operation, the shape and size of the surface are not controlled at a small scale, so that the size of the micron meter or more often changes in the ink application portion. Therefore, if an ink application operation is applied to the assembly surface, problems such as a decrease in the precision of the lens assembly or a tilt of the lens are likely to occur, and the image quality is lowered, and if the ink is applied to the inner sharp corner portion, it is easy. Voids are created, resulting in uneven stray light.

If the visor is added, the size control ability is better than the general ink application method, but the relative reflectance is high. In the case of directly fitting with the lens, the usable shielding area is reduced, and the control effect of stray light is reduced. limited.

Therefore, at the same time, it satisfies the requirements of centroid accuracy and stray light control, and overcomes the characteristics of mutual restraint and influence, which is an important issue in the current portable camera manufacturing industry.

The present invention provides an optical lens and an electronic device comprising a two-color molded lens, which transmits a light transmitting portion and a light absorbing portion disposed therein, thereby improving stray light and improving centering accuracy.

According to the present invention, there is provided an optical lens having an optical axis and comprising at least one lens and at least one two-color molded lens. The two-color molded lens is a plastic material portion of two different colors and is formed by injection molding, and comprises a light transmitting portion, a light absorbing portion and at least one axial connecting surface. The light transmitting portion has an optically effective region. At least one of the axial joint faces is located on one side of the two-color molded lens, and the axial joint face overlaps the adjacent lens for aligning the center of the lens with the adjacent lens. Therefore, the effect of improving the accuracy of the heart can be achieved.

According to the optical lens described above, the axial connecting surface may be disposed in the light absorbing portion or the light transmitting portion. When the number of the axial connecting faces is at least two, they may be respectively disposed on the light transmitting portion and the light absorbing portion. Thereby, the center of the lens and the adjacent lens can be molded for positive two-color.

According to the optical lens described above, the two-color molded lens can be further The utility model comprises a vertical parting surface which is located on the same side of the two-color molded lens as the axial joint surface, and the vertical distance between the vertical parting surface and the optical axis is greater than the vertical distance of the axial joint surface and the optical axis. In addition, the two side surfaces of the light absorbing portion are respectively an inner side surface and an outer side surface, and the inner side surface is connected to the light transmitting portion, and the vertical parting surface is further disposed on the outer side of the light absorbing portion. Thereby, the dimensional accuracy of the two-color molded lens can be improved.

According to the optical lens described above, the two-color molded lens has an outer diameter surface that connects the first side surface and the second side surface of the two-color molded lens, and the light transmitting portion extends from the low optical axis of the two-color molded lens to the outer diameter surface. And surrounding the two-color molded lens periphery, and constitutes one of the outer diameter faces. In order to promote the positional accuracy of the outer diameter surface and the optical axis center.

According to the optical lens described above, the angle between the axial joint surface and the direction of the optical axis is θ, which satisfies the following condition: 0 degree < θ < 40 degrees. Preferably, it satisfies the following conditions: 5 degrees < θ < 31 degrees. Thereby, the precision of the center of the lens can be improved.

According to the optical lens described above, the light absorbing portion is transparent to infrared light. Thereby, the manufacturing yield of the optical lens is improved.

According to the present invention, an electronic device includes a camera module. The camera module includes the above optical lens and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the optical lens.

According to the present invention, there is provided an optical lens having an optical axis and comprising at least one two-color molded lens, which is a plastic material portion of two different colors, and includes a light transmitting portion and a light absorbing portion, wherein the light transmitting portion There is an optically active area. The two-color molded lens has an outer diameter surface and is connected The two-color molds the first side surface and the second side surface of the lens, and the light-transmitting portion extends from the near-optical axis of the two-color molded lens to the outer diameter surface, and surrounds the two-color molded lens periphery, and forms one part of the outer diameter surface, the light The absorbing portion is located only on one of the first side surface and the second side surface of the two-color molded lens. Therefore, the effect of improving the accuracy of the heart can be achieved. In addition, the outer diameter surface can be an outer diameter assembly surface for connecting to the lens barrel.

According to the optical lens described above, the two-color molded lens may further include at least one axial joint surface on one side of the two-color molded lens. The axial connecting surface may be disposed in the light absorbing portion or the light transmitting portion. When the number of the axial connecting faces is at least two, they may be respectively disposed on the light transmitting portion and the light absorbing portion. The two-color molded lens can be made by injection molding. Thereby, the center of the lens and the adjacent lens can be molded for positive two-color.

According to the optical lens described above, the two-color molded lens may further comprise a vertical parting surface, wherein the axial connecting surface is located on the same side of the two-color molded lens, and the vertical dividing surface is perpendicular to the optical axis by the axial connection. The vertical distance between the face and the optical axis. In addition, the vertical parting surface can be on the same side as the light absorbing part. Furthermore, the two sides of the light absorbing portion are respectively an inner side surface and an outer side surface, and the inner side surface is connected to the light transmitting portion, and the vertical parting surface is also located on the outer side of the light absorbing portion. Thereby, the dimensional accuracy of the two-color molded lens can be improved.

According to the above optical lens, the two-color molded lens may further comprise at least one horizontal connecting surface disposed on the light absorbing portion for overlapping with one of the adjacent lenses in the optical lens, so that the two-color molded lens and the lens are disposed between There is an inter-mirror distance on the optical axis. Therefore, the distance between the lenses can be effectively controlled.

According to the optical lens described above, the outer diameter of the two-color molded lens is ψ D, which satisfies the following condition: 2.5 mm < ψ D < 8.0 mm. Thereby, the outer diameter of the two-color molded lens is appropriately controlled to improve the dimensional stability.

According to the optical lens described above, wherein the outer diameter of the two-color molded lens is ψ D, and the outer diameter of the light absorbing portion is ψ po, which satisfies the following condition: 0.5 < ψ po / ψ D 1.0. Therefore, a suitable range of stray light absorption can be provided.

According to the present invention, an electronic device is further provided, comprising a camera module. The camera module includes the above optical lens and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the optical lens.

100‧‧‧ optical lens

110‧‧‧first lens

130‧‧‧ third lens

140‧‧‧Fourth lens

150‧‧‧ fifth lens

120, 220, 310, 440‧‧‧ two-color molded lens

121, 221, 311, 441‧‧ ‧ Transmitted Department

121a, 221a, 311a, 441a‧‧‧ optical effective area

122, 222, 312, 442 ‧ ‧ light absorption department

123, 223, 313, 443‧‧‧ first side surface

124, 224, 314, 444‧‧‧ second side surface

125, 225, 315, 445 ‧ ‧ outer diameter surface

126, 127, 226, 227, 316‧‧‧ axial joint faces

128, 129, 228, 229, 318‧‧‧ horizontal connection faces

160‧‧‧Electronic photosensitive element

50‧‧‧ camera module

610‧‧‧ movable mold

620‧‧‧First fixed mold

630‧‧‧Second fixed mold

θ 1 , θ 2‧‧‧ the angle between the axial joint surface and the direction of the optical axis

ψ D‧‧‧ outer diameter of two-color molded lens

ψ po‧‧‧The outer diameter of the light absorption section

PL1, PL2‧‧‧ vertical parting surface

PL3‧‧‧ horizontal parting surface

1 is a schematic view of an optical lens according to a first embodiment of the present invention; FIG. 2 is an enlarged schematic view of a two-color molded lens according to the optical lens of FIG. 1; and FIG. 3 is a view of the optical lens according to FIG. A schematic diagram of parameters θ 1 , θ 2 , ψ po and ψ D in a two-color molded lens; FIG. 4A is a schematic view showing a first step of a method for manufacturing a two-color molded lens according to a first embodiment of the present invention; FIG. 4B is a view BRIEF DESCRIPTION OF THE DRAWINGS FIG. 5 is a schematic view showing a second step of a two-color molded lens manufacturing method according to a second embodiment of the present invention; FIG. 6 is an enlarged schematic view showing a two-color molded lens of an optical lens according to a third embodiment of the present invention; and FIG. 7 is an enlarged schematic view showing a two-color molded lens of the optical lens according to the fourth embodiment of the present invention; and FIG. A schematic diagram of a camera module of an electronic device in accordance with a fifth embodiment of the present invention.

Please refer to FIG. 1 , wherein FIG. 1 is a schematic view of an optical lens 100 according to a first embodiment of the present invention. As can be seen from 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 an optical lens 100 , an electronic photosensitive element (not shown), and an infrared filter (IR). -cut Filter; not shown). The optical lens 100 includes five lenses having refractive power, and the first side to the second side are a first lens 110, a two-color molded lens 120 (ie, a second lens), a third lens 130, a fourth lens 140, and a first Five lenses 150.

Referring to Fig. 2, an enlarged schematic view of the two-color molded lens 120 of the optical lens 100 according to Fig. 1 is shown. Specifically, the two-color molded lens 120 is made of a plastic material and includes a light transmitting portion 121 and a light absorbing portion 122. The light transmitting portion 121 has an optical effective region 121a, wherein the material of the light transmitting portion 121 is a transparent PC having a high refractive index. The optical absorbing portion 122 is made of a black PC. From this, it can be seen that the two-color molded lens 120 has a two-color effect by transmitting the plastic material of different colors through the light transmitting portion 121 and the light absorbing portion 122.

The two sides of the two-color molded lens 120 are respectively the first side surface 123 and the second side surface 124 have an outer diameter surface 125 connecting the first side surface 123 and the second side surface 124. The light transmitting portion 121 extends from the near optical axis of the two-color molded lens 120 to the outer diameter surface 125 (ie, extends from the optical effective region 121a to the outer diameter surface 125), and the outer diameter surface 125 includes at least the light transmitting portion 121; The light transmitting portion 121 surrounds the periphery of the two-color molded lens 120 and constitutes one of the outer diameter faces 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 attachment to the lens barrel. Thereby, the two-color molding lens 120 can overlap the other components (such as the lens barrel) in the optical lens 100 through the outer diameter surface 125 to control the assembly of the center of the lens.

The light absorbing portion 122 is located only on one side of the two-color molded lens 120 (in the first embodiment, the light absorbing portion 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. In the first embodiment, the optical lens 100 includes two axial connecting surfaces 126 and 127 disposed on two sides of the two-color molding lens 120, and respectively disposed on the light absorbing portion 122. And the light transmitting portion 121 is configured to overlap the adjacent first lens 110 and the third lens 130, so that the center of the two-color molding lens 120 and the center of the lens (the first lens 110 and the third lens 130) are located in the light. On the shaft, the effect on the center of the positive lens is achieved.

The optical lens 100 can further include at least one horizontal connecting surface. In the first embodiment, the optical lens 100 includes two horizontal connecting surfaces 128 and 129 on two sides of the two-color molding lens 120, which are respectively disposed on the light absorbing portion 122. And a light transmitting portion 121 for adjacent to the lens in the optical lens 100 (The first lens 110 and the third lens 130) are overlapped. Thereby, the two-color molded lens 120 and the lens (the first lens 110 and the third lens 130) have an inter-mirror distance on the optical axis.

The optical lens 100 may include at least one axial joint surface, and an angle between the axial joint surface and the direction of the optical axis is θ, which satisfies the following condition: 0 degrees < θ < 40 degrees. Preferably, it satisfies the following conditions: 5 degrees < θ < 31 degrees. Referring to Fig. 3, there are shown schematic diagrams of parameters θ 1 , θ 2, ψ po and ψ D in the two-color molded lens 120 of the optical lens 100 according to Fig. 1. As can be seen from FIG. 3, in the first embodiment, the optical lens 100 includes two axial connecting faces 126, 127, wherein an angle between the axial connecting face 126 and the direction of the optical axis is θ 1, and θ 1 = 10 degrees. The angle between the axial connecting surface 127 and the direction of the optical axis is θ 2 and θ 2 = 30 degrees. Thereby, the first lens 110 and the third lens 130 are more stably overlapped to achieve the effect of centering the lens. Incidentally, the surface angle of the lens (the first lens 110 and the third lens 130) adjacent to and overlapping the two-color molded lens 120 at the lap joint also changes 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 portion 122 is ψ po, which satisfies the following conditions: 2.5 mm < ψ D < 8.0 mm; and 0.5 < ψ po / ψ D 1.0. In the first embodiment, ψ D = 3.76 mm, ψ po / ψ D = 0.91.

Referring to FIG. 4A and FIG. 4B, FIG. 4A is a schematic diagram showing a first step of a method for manufacturing a two-color molded lens 120 according to a first embodiment of the present invention, and FIG. 4B is a two-color molding method according to a first embodiment of the present invention. A schematic diagram of the second step of the lens 120 fabrication process. As can be seen from Figure 4A, The two-color molding lens 120 is formed into a light absorbing portion 122 by injection molding in a cavity between the movable mold 610 and the first fixed mold 620. Next, it can be seen from FIG. 4B that the second step moves the movable mold 610 to the second fixed mold 630 to form another mold cavity. At this time, the formed light absorbing portion 122 is linked to another mold cavity, and then The light transmitting portion 121 is formed by another injection molding method. Thereby, two injection moldings of two kinds of plastic materials were used to produce a two-color molded lens having two colors.

In general, based on the requirement of a mold for producing a two-color molded lens, after forming and separating the mold, a parting surface is formed on the two-color molded lens, wherein the outer diameter of the two-color molded lens is horizontal and the extending direction is horizontal. It is a horizontal parting surface, and is located on the first side surface or the second side surface of the two-color molding lens and extends in the vertical direction, which is a vertical parting surface.

In this embodiment, the two-color molded lens 120 after molding further includes two vertical parting surfaces PL1 and PL2 and a horizontal parting surface PL3. The vertical parting surface PL1 is disposed on the outer side surface of the light absorbing portion 122 (the inner side surface and the outer side surface of the light absorbing portion 122 are respectively connected to the light transmitting portion 121, and the outer side surface is the opposite inner side surface. On the other side, the vertical parting surface PL2 is disposed on the outer side surface of the light transmitting portion 121 (the inner side surface and the outer side surface of the light transmitting portion 121 are respectively connected to the light absorbing portion 122, and the outer side surface is connected to the outer side surface The horizontal parting surface PL3 is provided on the outer diameter surface 125 of the two-color molding lens 120. The vertical parting surface PL1 and the axial connecting surface 126 are both located on the outer side of the light absorbing portion 122 (ie, on the same side of the two-color molding lens 120), and the vertical dividing surface PL1 has a vertical distance from the optical axis that is greater than the axial connecting surface 126. The vertical distance from the optical axis. Vertical parting surface Both the PL2 and the axial connecting surface 127 are located on the outer side of the light transmitting portion 121 (ie, on the same side of the two-color molded lens 120), and the vertical distance between the vertical split surface PL2 and the optical axis is greater than the axial connecting surface 127 and the optical axis. The vertical distance. The accuracy of the lens size can be improved by the setting of the parting surface.

Incidentally, in the first step of injection molding, the plastic material of the light absorbing portion 122 may be injected from the interface of the light transmitting portion 121 and the light absorbing portion 122, or may be injected from the outside of the two-color molding lens 120, and in the second step The material of the light transmitting portion 121 is injected from the outer diameter of the lens in the direction of the optical axis.

In addition, the material of the light transmitting portion 121 may be a Polyester, such as OGC's OKP series, or other conventional optical plastic materials, in addition to PCs having a high refractive index, such as the EP series of Teijin SP series and MGC. The material of the optical absorbing portion may be a black PC such as Teijin L-1225Y, or a material that absorbs visible light and is transparent to infrared light (that is, transparent to infrared light), in accordance with the material of the light transmitting portion 121. Of course, the material of the light absorbing portion 121 is not limited to the black PC. When the light transmitting portion is made of a material other than PC, such as COC, COP, PMMA, or the like, the light absorbing portion 122 may use the same substrate as the light transmitting portion 121. And with the applicable black color material, after the material is kneaded, it is made into a black plastic material as the material of the light absorbing portion 122. In addition to the optical lens and the electronic photosensitive element, the camera module or the general camera module of the present invention further includes an infrared filter, which does not affect the light after being matched with a suitable infrared filter. The effect of the absorption section.

Referring to FIG. 5, an enlarged schematic view of a two-color molded lens 220 of an optical lens according to a second embodiment of the present invention is shown. In Figure 5, optical The lens (not shown) is an optical lens of a camera module for a mobile phone, and other components included in the camera module for the mobile phone are the same as those of the first embodiment, and are not described 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 arrangement relationship between the two-color molded lens 220 and the lens is the same as that of FIG. 1 , and therefore, it will not be further described or described herein.

As can be seen from FIG. 5, in the second embodiment, the two-color molding lens 220 is a plastic material portion of two different colors, and includes a light transmitting portion 221 and a light absorbing portion 222. The light transmitting portion 221 has an optical effective region 221a, wherein the material of the light transmitting portion 221 is a high refractive index transparent PC. The optical absorbing portion 222 is made of a PC that absorbs visible light and is transparent to infrared rays (ie, transparent to infrared light). Therefore, it can be seen that the two-color molded lens 220 has a double-color effect by transmitting the light-transmitting portion 221 and the light-absorbing portion 222 to different color plastic materials.

The two sides of the two-color molded lens 220 are a first side surface 223 and a second side surface 224, respectively, and have an outer diameter surface 225 connecting the first side surface 223 and the second side surface 224. The light transmitting portion 221 extends from the near optical axis of the two-color molding lens 220 to the outer diameter surface 225 (ie, extends from the optical 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. Composition. Thereby, the two-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 center of the lens.

The light absorbing portion 222 is located only on one side of the two-color molded lens 220 (in the second embodiment, the light absorbing portion 222 is located on the first side surface 223 of the two-color molded lens 220). Therefore, in the manufacturing assembly process, the light absorbing portion 222 and the light transmitting portion 221 have different transmittances for the light of the operating band of the camera module, and the inside of the molded article can be observed by the light of the non-operating band. Homogenization ensures that the light absorption area is correctly produced to improve the production yield.

In the second embodiment, the optical lens includes two axial connecting faces 226 and 227, which are disposed on two sides of the two-color molding lens 220, and are respectively disposed on the light absorbing portion 222 and the light transmitting portion 221 for use with adjacent lenses (eg, A lens and a third lens are overlapped so that the center of the two-color molded lens 220 and the center of the adjacent lens are located on the optical axis to achieve the effect of centering the lens.

In the second embodiment, the optical lens includes two horizontal connecting faces 228 and 229 on two sides of the two-color molding lens 220, which are respectively disposed on the light absorbing portion 222 and the light transmitting portion 221 for adjacent to the optical lens. The lenses (such as the first lens and the third lens) are overlapped. Thereby, the two-color molded lens 220 and the adjacent lens have an inter-mirror distance on the optical axis.

The two-color molding lens 220 of the second embodiment further includes two vertical parting surfaces PL1, PL2 and a horizontal parting surface PL3. The vertical parting surface PL1 is disposed on the outer side surface of the light absorbing portion 222 and is located on the same side as the axial connecting surface 226, and the vertical distance between the vertical parting surface PL1 and the optical axis is greater than the vertical distance between the axial connecting surface 126 and the optical axis. The vertical parting surface PL2 is disposed on the outer side surface of the light transmitting portion 221, and the vertical parting surface PL2 is located on the same side as the axial connecting surface 227, and the vertical dividing surface PL2 has a vertical distance from the optical axis larger than the axial connecting surface 227 and The vertical distance of the optical axis.

With reference to Fig. 3, the definitions of the parameters θ 1 , θ 2, ψ po and ψ D in the two-color molded lens 120 of the second embodiment are the same as those of the first embodiment, and will not be further illustrated or described. The parameters and condition values of the second embodiment are as follows:

In addition, referring to FIG. 4A and FIG. 4B, the manufacturing method of the two-color molding lens 220 of the second embodiment is the same as that of the first embodiment, and is not illustrated or described in detail.

Referring to FIG. 6, there is shown an enlarged schematic view of a two-color molded lens 310 of an optical lens according to a third embodiment of the present invention. In the sixth embodiment, the 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 the mobile phone are the same as those of the first embodiment, and are not described herein. In the third embodiment of the present invention, the optical lens comprises at least one lens and a 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, which can be regarded as a first lens, and other lenses in the optical lens The configuration relationship of the other components is the same as that of FIG. 1 and therefore will not be further illustrated or described herein.

As can be seen from FIG. 6, in the third embodiment, the two-color molded lens 310 is a plastic material portion of two different colors, and includes a light transmitting portion 311 and a light absorbing portion 312. The light transmitting portion 311 has an optical effective region 311a, wherein the material of the light transmitting portion 311 is COC. The optical absorption portion 312 is located on the second side surface 314 of the two-color molded lens 310, which is made of black COC. From this, it can be seen that the two-color molded lens 310 has a double-color effect by transmitting the plastic material of different colors through 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 have an outer diameter surface 315 connecting the first side surface 313 and the second side surface 314. The light transmitting portion 311 extends from the near optical axis of the two-color mold lens 310 to the outer diameter surface 315 (that is, extends from the optical effective region 311a to the outer diameter surface 315), and the outer diameter surface 315 is composed of the light transmitting portion 311. By this, double The color mold lens 310 can be overlapped with other components (such as a lens barrel) in the optical lens through the outer diameter surface 315 to control the assembly of the center of the lens.

In the third embodiment, the two-color molded lens 310 includes an axial joint surface 316 and a horizontal joint surface 318, wherein the axial joint surface 316 and the horizontal joint surface 318 are disposed on the light absorbing portion 312 for use with adjacent lenses ( As the second lens) overlaps. Thereby, the dual effect of aligning the center of the lens and the distance between the mirrors can be achieved at the same time.

In the third embodiment, the two-color molded lens 310 includes a vertical parting surface PL1 disposed on the outer side surface of the light absorbing portion 312, and the axial connecting surface 316 is located on the outer side of the light absorbing portion, and the vertical parting surface PL1 The vertical distance from the optical axis is greater than the vertical distance of the axial joint surface 316 from the optical axis.

With reference to FIG. 3, the definitions of the parameters θ, ψ po, and ψ D in the two-color molded lens 310 of the third embodiment are the same as those in the first embodiment, and will not be further illustrated or described. In particular, the two-color molded lens 310 of the third embodiment includes only one axial joint surface 316, so it only includes an angle θ, and the definition and position of the angle θ can be referred to the angle θ 1 of the first embodiment. The parameters and condition values of the third embodiment are as follows:

In addition, referring to FIG. 4A and FIG. 4B, the manufacturing method of the two-color mold lens 310 of the third embodiment is the same as that of the first embodiment, and is not illustrated or described in detail.

Referring to FIG. 6, there is shown an enlarged schematic view of a two-color molded lens 310 of an optical lens according to a third embodiment of the present invention. In Fig. 6, the optical lens (not shown) is an optical lens of a camera module for a mobile phone, and is used for a mobile phone. Other components included in the camera module are the same as those in the first embodiment, and are not described herein. In the third embodiment of the present invention, the optical lens comprises at least one lens and a 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, which can be regarded as a first lens, and other lenses in the optical lens The configuration relationship of the other components is the same as that of FIG. 1 and therefore will not be further illustrated or described herein.

Referring to FIG. 7, an enlarged schematic view of a two-color molded lens 440 of an optical lens according to a fourth embodiment of the present invention is shown. In the seventh embodiment, the 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 the mobile phone are the same as those of the first embodiment, and are not described herein. In the fourth embodiment of the present invention, the optical lens comprises a four-lens and two-color molded lens 440, and the two-color molded lens 440 is disposed at a position from the first side to the second side of the fourth lens, which can be regarded as a fourth lens, and the optical lens The arrangement of other lenses and other components is the same as that of FIG. 1 and therefore will not be further illustrated or described herein.

As can be seen from Fig. 7, in the fourth embodiment, the two-color molded lens 440 is a plastic material portion of two different colors, and includes a light transmitting portion 441 and a light absorbing portion 442. The light transmitting portion 441 has an optical effective region 441a, wherein the material of the light transmitting portion 441 is COC. The optical absorption portion 442 is located on the first side surface 443 of the two-color molded lens 440, and is made of a black COC. From this, it can be seen that the two-color molded lens 440 has a two-color effect by transmitting the light transmitting portion 441 and the light absorbing portion 442 to plastic materials of different colors.

The two sides of the two-color molded lens 440 are a first side surface 443 and a second side surface 444, respectively, and have an outer diameter surface 445 connected to the first side surface. Face 443 and second side surface 444. The light transmitting portion 441 extends from the near optical axis of the two-color molded lens 440 to the outer diameter surface 445 (that is, extends from the optical effective region 441a to the outer diameter surface 315), and the outer diameter surface 445 is composed of the light transmitting portion 441. Thereby, the two-color molded lens 440 can overlap the other components (such as the lens barrel) in the optical lens through the outer diameter surface 445 to control the assembly of the center of the lens.

With reference to FIG. 3, the definitions of the parameters ψ po and ψ D in the two-color molded lens 440 of the fourth embodiment are the same as those of the first embodiment, and will not be further illustrated or described. The parameters and condition values of the fourth embodiment are as follows:

In addition, referring to FIG. 4A and FIG. 4B, the manufacturing method of the two-color molded lens 440 of the fourth embodiment is the same as that of the first embodiment, and is not illustrated or described in detail.

Please refer to FIG. 8 , which is a schematic diagram of a camera module 50 of an electronic device according to a fifth embodiment of the present invention. It can be seen from Fig. 8. The electronic device (not shown) is a mobile phone, and the camera module 50 is a camera module for a mobile phone. The camera module 50 includes an optical lens 100 and an electronic photosensitive element 160 disposed on an imaging surface (not shown) of the optical lens 100. In the fifth embodiment, the optical lens 100 is the optical lens 100 of the first embodiment of the first embodiment, and therefore will not be described herein.

Further, the present invention is not limited to the above-described optical lens having five lenses having a refractive power, and the number of refractive power lenses can be set to three, four, five, six 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.

Furthermore, the two-color molded lens included in the optical lens of the present invention can preferably be disposed at the position of the second lens from the object side to the image side, or the position of the second lens from the image side to the object side. . Of course, if it is placed at other locations, it still has the effect of suppressing stray light and improving image quality. In addition, when the optical lens has a wide viewing angle characteristic, the two-color molding lens is disposed on the object side to the image side to calculate the first lens, and can also exhibit its effect.

While the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and the invention may be modified and modified in various ways without departing from the spirit and scope of the invention. The scope is subject to the definition of the scope of the patent application.

120‧‧‧Two-color molded lens

121‧‧‧Transmission Department

121a‧‧‧Optical Effective Area

122‧‧‧Light Absorption Department

123‧‧‧First side surface

124‧‧‧Second side surface

125‧‧‧outer surface

126, 127‧‧‧ axial joint surface

128, 129‧‧‧ horizontal connection surface

Claims (11)

An optical lens having an optical axis comprising: at least one lens; and at least one two-color molded lens, which is a plastic material portion of two different colors and is formed by injection molding, comprising: a light transmitting portion having an optical An effective area; a light absorbing portion; and at least one axial connecting surface on one side of the two-color molded lens, the axial connecting surface overlapping the adjacent lens for aligning the two-color molded lens with the lens 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 optical effective area of the two-color molded lens to the outer surface The diameter surface surrounds the periphery of the two-color molded lens and constitutes one of the outer diameter faces. The optical lens according to claim 1, wherein the light absorbing portion is provided with the axial connecting surface. The optical lens according to claim 1, wherein the light transmitting portion is provided with the axial connecting surface. The optical lens according to claim 2, wherein when the number of the axial connecting faces is at least two, the light transmitting portion and the light absorbing portion are provided with the axial connecting faces. The optical lens of claim 1, wherein the two-color molded lens further comprises: a vertical parting surface, and the axial connecting surface is located in the two-color molding The side of the lens, and the vertical distance of the vertical parting surface from the optical axis is greater than the vertical distance of the axial connecting surface from the optical axis. The optical lens of claim 2, wherein the two sides of the light absorbing portion are an inner side surface and an outer side surface, and the inner side surface is connected to the light transmitting portion, and the optical lens further comprises: The vertical parting surface and the axial connecting surface are located on the outer side surface of the light absorbing portion, 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. The optical lens of claim 4, wherein the two sides of the light absorbing portion are an inner side surface and an outer side surface, and the inner side surface is connected to the light transmitting portion, and the optical lens further comprises: a vertical parting surface, wherein the axial joint surface is located on the outer side surface of the light absorbing portion, 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 . The optical lens according to claim 1, wherein an angle between the axial connecting surface and a direction of the optical axis is θ, which satisfies the following condition: 0 degrees < θ < 40 degrees. The optical lens according to claim 8, wherein an angle between the axial joint surface and the direction of the optical axis is θ, which satisfies the following condition: 5 degrees < θ < 31 degrees. The optical lens of claim 2, wherein the light absorbing portion is transparent to infrared light. An electronic device comprising: A camera module comprising: the optical lens of claim 1; and an electronic photosensitive element disposed on an imaging surface of the optical lens.