TWI629500B - Imaging lens assembly and electronic device - Google Patents

Abstract

An imaging lens comprising a plurality of lenses, at least one of which is a two-color molded lens, the two-color molded lens comprising a light transmitting portion and a light absorbing portion. The light transmitting portion includes an optically effective region. The light absorbing portion is located only on one of the object side surface and the image side surface of the two-color molded lens, and the plastic material and color of the light absorbing portion are different from the plastic material and color of the light transmitting portion, and the light absorbing portion includes the opening. The opening is non-circular and is disposed corresponding to the optical effective area. When certain conditions are met, stray light can be suppressed to improve the imaging quality of the imaging lens.

Description

Imaging lens and electronic device

The present invention relates to an imaging lens, and more particularly to a miniaturized imaging lens for use on an electronic device.

With the popularization of personalized electronic products and mobile communication products equipped with imaging devices such as mobile phones and tablet computers, the rise of miniaturized imaging lenses has led to a demand for compact imaging lenses with high resolution and excellent image quality. rising.

Plastic lenses are usually used to effectively reduce the production cost of the imaging lens. The conventional plastic lenses are mainly manufactured by injection molding. Since the surface of the plastic lens is smooth and bright and has high reflectivity, when the stray light is optical by the imaging lens When the surface of the component is reflected to the surface of the plastic lens, the reflected light intensity of the stray light incident on the surface of the plastic lens cannot be effectively attenuated.

Therefore, how to meet the requirements of the miniaturized imaging lens in suppressing stray light, and thereby improve the imaging quality of the miniaturized imaging lens to meet the needs of high-order imaging devices has become one of the most important issues today.

The invention provides an imaging lens and an electronic device, which effectively suppress stray light to improve the imaging quality of the imaging lens by the two-color molding lens in the imaging lens and the configuration of the light transmitting portion and the light absorbing portion.

According to the present invention, there is provided an imaging lens comprising a plurality of lenses, at least one of which is a two-color molded lens, and the two-color molded lens comprises a light transmitting portion and a light absorbing portion. The light transmitting portion includes an optically effective region. The light absorbing portion is located only on one of the object side surface and the image side surface of the two-color molded lens, and the plastic material and color of the light absorbing portion are different from the plastic material and color of the light transmitting portion, and the light absorbing portion includes the opening. The opening is non-circular and is disposed corresponding to the optical effective area. The minimum diameter of the aperture through the optical axis is ψBmin, and the maximum diameter of the aperture through the optical axis is ψBmax, which satisfies the following condition: 0.35 < ψ Bmin / ψ Bmax < 0.75. With the features mentioned in this paragraph, stray light can be suppressed more efficiently to improve the imaging quality of the imaging lens.

According to the imaging lens of the preceding paragraph, the light transmitting portion and the light absorbing portion can be formed by secondary injection molding. The light absorbing portion may further include a ring-shaped recessed structure that is recessed by a surface of the light absorbing portion in a direction parallel to the optical axis. The depth of the annular recessed structure in the direction parallel to the optical axis is w, which satisfies the following condition: 0.015 mm < w < 0.35 mm. The light absorbing portion may further include a ring-shaped convex structure that surrounds the opening. The width of the annular projection structure in the radial direction of the optical axis is t, which satisfies the following condition: 0.04 mm < t < 0.80 mm. The opening can be a polygon. The number of sides of the opening is m, which satisfies the following condition: 3 < m < 13. The optical effective area may be aspherical in the object side surface and the image side surface of the two-color molded lens. The light absorbing portion may be located on the image side surface of the two-color molded lens, and the point at which the optical effective region is closest to the image forming surface is closer to the light absorbing portion Imaging surface. The optically effective region may include at least one inflection point in the object side surface and the image side surface of the two-color molded lens. The optically active region may comprise a non-circular outer edge in the object side surface and the image side surface of the two-color molded lens. The maximum outer diameter of the light transmitting portion is ψL, and the maximum outer diameter of the light absorbing portion is ψM, which satisfies the following condition: ψL<ψM. The light absorbing portion may further include a rough surface that is not in contact with the light transmitting portion. The light absorbing portion may further include an anti-reflection film layer plated on at least a part of the surface of the light absorbing portion that is not in contact with the light transmitting portion. The two-color molded lens can be one of the lenses closest to the imaging surface. The imaging lens may further comprise a glue material connected to the light absorbing portion. With the technical features of each point mentioned above, the imaging quality of the imaging lens and the molding yield of the two-color molded lens can be achieved.

According to the present invention, there is further provided an electronic device comprising an imaging lens module comprising the aforementioned imaging lens and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the imaging lens. Thereby, it contributes to good image quality.

10, 20, 30‧‧‧ electronic devices

11, 21, 31‧‧‧ imaging lens module

1000, 2000, 3000‧‧‧ imaging lens

1101, 1102, 1103, 1104, 1105, 2101, 2102, 2103, 2104, 3101, 3102, 3103, 3104, 3105 ‧ lens

1200, 2200, 3200‧‧ ‧ tube

1300, 2300, 3300‧‧‧ glue materials

100, 200, 300‧‧‧ two-color molded lens

101, 201, 301‧‧‧ ‧ side surface

102, 202, 302‧‧‧ image side surface

130, 230, 330‧‧ ‧ Transmitted Department

133, 233, 333‧ ‧ optical effective area

139, 239, 339‧‧‧ non-circular rim

150, 250, 350‧‧‧Light Absorption Department

154, 254, 354‧‧ ‧ openings

155, 255, 355‧‧‧ ring-shaped recessed structure

156, 256‧‧‧ ring-shaped raised structure

157, 257, 357‧‧‧ rough surface

158, 258, 358‧‧‧ anti-reflection coating

M‧‧‧ the number of sides of the hole

Number of lenses for N‧‧‧ imaging lenses

t‧‧‧Width of the ring-shaped convex structure in the radial direction of the optical axis

w‧‧‧Deep depth of the ring-shaped concavity structure parallel to the optical axis

ψBmax‧‧‧ openings through the maximum diameter of the optical axis

ψBmin‧‧‧The minimum diameter of the aperture through the optical axis

ψL‧‧‧The largest outer diameter of the light transmission part

ψM‧‧‧The maximum outer diameter of the light absorption section

ψWmax‧‧‧The diameter of the non-circular outer edge through the optical axis

ψWmin‧‧‧The smallest diameter of the non-circular outer edge through the optical axis

1A is a schematic view of an imaging lens according to a first embodiment of the present invention; FIG. 1B is a schematic view showing a two-color molded lens in the first embodiment; and FIG. 1C is a perspective view showing a two-color molded lens in the first embodiment; 1D is another perspective view of the two-color molded lens in the first embodiment; FIG. 1E is a plan view showing the two-color molded lens of FIG. 1D; 1F is another top view of the two-color molded lens of FIG. 1D; FIG. 1G is a cross-sectional view taken along line 1G-1G of FIG. 1F; and FIG. 2A is a schematic view of the imaging lens of the second embodiment of the present invention; 2B is a schematic view of the two-color molded lens in the second embodiment; FIG. 2C is a top view of the two-color molded lens in the second embodiment; and FIG. 2D is a two-color molded lens in the second embodiment; FIG. 2E is a cross-sectional view of the imaging line according to the second embodiment of the present invention; FIG. 3B is a schematic view of the imaging lens according to the third embodiment of the present invention; 3C is a top view of the two-color molded lens in the third embodiment; FIG. 3D is another top view of the two-color molded lens in the third embodiment; and FIG. 3E is a third view a cross-sectional view of a section line 3E-3E; FIG. 4 is a schematic view showing an electronic device according to a fourth embodiment of the present invention; FIG. 5 is a schematic view showing an electronic device according to a fifth embodiment of the present invention; and FIG. A schematic diagram of an electronic device of a sixth embodiment.

<First Embodiment>

Please refer to FIG. 1A, which is a schematic diagram of an imaging lens 1000 according to a first embodiment of the present invention. As can be seen from FIG. 1A, the imaging lens 1000 includes a plurality of lenses, one of which is a two-color molded lens 100. In other implementations In an example (not shown), the imaging lens may comprise two or more two-color molded lenses.

Referring to FIG. 1B, a schematic diagram of the two-color molded lens 100 in the first embodiment is shown. As can be seen from FIGS. 1A and 1B , the two-color molded lens 100 includes the light transmitting portion 130 and the light absorbing portion 150 , that is, after the second injection molding or the secondary molding, the light transmitting portion 130 and the light absorbing portion 150 are formed. The two-color molded lens 100.

The light transmitting portion 130 includes an optical effective area 133. The imaging light passes through the optical effective area 133 and forms an image on the imaging surface (not shown). The optical effective area 133 may include a plane or a surface having a diopter aspheric surface, and the area may be covered. Affect imaging.

1C and 1D, FIG. 1C is a perspective view of the two-color molded lens 100 in the first embodiment, and FIG. 1D is another perspective view of the two-color molded lens 100 in the first embodiment. As is apparent from FIGS. 1A to 1D, the light absorbing portion 150 is located on one of the object side surface 101 and the image side surface 102 of the two-color mold lens 100 (in the first embodiment, the surface is the image side surface 102), The plastic material and color of the light absorbing portion 150 are different from the plastic material and color of the light transmitting portion 130. In the first embodiment, the plastic material of the light absorbing portion 150 has the property of absorbing visible light, the color of which is black, and the plastic material of the transparent portion 130 has visible light transmission property, and the color thereof is transparent and colorless, so the light absorbing portion 150 The plastic material and color are different from the plastic material and color of the light transmitting portion 130. In other embodiments (not shown), the light absorbing portion may be located on the object side surface of the two-color molded lens, or the light absorbing portion may be located on the object side surface and the image side surface of the two-color molded lens.

The light absorbing portion 150 includes an opening 154 corresponding to the optical effective area 133 to allow imaging light to form an image on the imaging surface through the optical effective area 133. Thereby, stray light can be suppressed to improve the imaging quality of the imaging lens 1000.

Specifically, please refer to FIG. 1E, and FIG. 1E is a plan view of the two-color mold lens 100 of FIG. 1D. As can be seen from Fig. 1E, the opening 154 of the light absorbing portion 150 can be non-circular. Thereby, it contributes to the improvement of the manufacturing yield of the two-color molding lens 100.

Referring to FIG. 1F, FIG. 1F is another plan view of the two-color mold lens 100 of FIG. 1D. As can be seen from FIG. 1F, the optically active region 133 can include a non-circular outer edge 139 on the image side surface 102 of the two-color molded lens 100. Thereby, the shape of the non-circular outer edge 139 of the optically active region 133 is designed to aid in the molding requirements of the two-color molded lens 100.

As can be seen from FIG. 1B, FIG. 1E and FIG. 1F, the opening 154 of the light absorbing portion 150 can be disposed corresponding to the non-circular outer edge 139 of the optical effective area 133, that is, the area surrounded by the non-circular outer edge 139 is equal to the opening. The area of the aperture 154, or the area enclosed by the non-circular outer edge 139, is within the area of the aperture 154. Thereby, the mold design of the two-color molding lens 100 is facilitated. In the first embodiment, the area surrounded by the non-circular outer edge 139 is equal to the area of the opening 154.

Referring to FIG. 1G, FIG. 1G is a cross-sectional view taken along line 1G-1G of FIG. 1F. As can be seen from FIG. 1E and FIG. 1G, the minimum diameter of the opening 154 through the optical axis is ψBmin, and the maximum outer diameter of the transparent portion 130 is ψL, which satisfies the following condition: 0.20<ψBmin/ψL<0.75. Thereby, stray light can be more suppressed to improve the imaging quality of the imaging lens 1000.

As can be seen from Fig. 1F, the minimum diameter of the non-circular outer edge 139 through the optical axis is ψWmin, and the maximum diameter of the non-circular outer edge 139 through the optical axis is ψWmax, which satisfies the following condition: 0.35 < ψ Wmin / ψ Wmax < 0.75. Thereby, the non-circular outer edge 139 has a particular non-circular shape feature that facilitates the mold design of the two-color molded lens 100.

Further, as can be seen from FIG. 1A, the number of lenses of the imaging lens 1000 is N, which can satisfy the following conditions: 5 N<10. Thereby, the imaging lens 1000 can be made to satisfy more shooting needs. In the first embodiment, the imaging lens 1000 sequentially includes the lenses 1101, 1102, 1103, 1104, 1105 and the two-color molded lens 100 from the object side to the image side, wherein the number of lenses of the imaging lens 1000 is six. In other embodiments (not shown), the number of lenses of the imaging lens may be five, seven, eight, or other more lenses. In addition, the imaging lens 1000 may further include a lens barrel 1200, so that the six lenses of the imaging lens 1000 are placed in the lens barrel 1200 to block a large amount of extra stray light, reducing its entry into the optical effective area, and avoiding the lens structure. Add unnecessary reflections.

The two-color molded lens 100 may be one of the lenses of the imaging lens 1000 that is closest to the imaging surface. Thereby, stray light transmitted between the lenses can be effectively blocked. In the first embodiment, the two-color molded lens 100 is one of the lenses of the imaging lens 1000 that is closest to the imaging surface.

The imaging lens 1000 may further include a glue material 1300 that connects the light absorbing portion 150 of the two-color molded lens 100. Thereby, the structural stability of the imaging lens 1000 can be increased. In the first embodiment, the glue material 1300 is connected to the light absorbing portion 150 and the lens barrel 1200.

The light transmitting portion 130 and the light absorbing portion 150 of the two-color mold lens 100 can be formed by secondary injection molding. Thereby, the process can be reduced to improve the production efficiency of the two-color mold lens 100.

As can be seen from Fig. 1G, the maximum outer diameter of the light transmitting portion 130 is ψL, and the maximum outer diameter of the light absorbing portion 150 is ψM, which satisfies the following condition: ψL < ψM. Thereby, the range in which the imaging lens 1000 shields stray light is increased.

As can be seen from Fig. 1A, the optical effective area 133 can be aspherical on the image side surface 102 of the two-color mold lens 100. This helps to reduce aberrations.

The optical effective area 133 may include at least one inflection point on the image side surface 102 of the two-color molded lens 100. Thereby, the aberration of the off-axis field of view is effectively corrected to improve the image quality of the periphery. In the first embodiment, the optical effective area 133 includes at least one inflection point at the off-axis of the image side surface 102 of the two-color mold lens 100, wherein the image side surface 102 is concave at the near optical axis.

In the first embodiment, the light absorbing portion 150 is located on the image side surface 102 of the two-color molded lens 100, and a point at which the optical effective region 133 is closest to the image forming surface is closer to the image forming surface than the light absorbing portion 150. Thereby, the shading design can be made to meet the demand of a small volume, and the balance between the shading efficiency and the small volume can be maintained.

As can be seen from Fig. 1E, the opening 154 of the light absorbing portion 150 can be polygonal. Thereby, it is helpful to increase the contact area between the light transmitting portion 130 and the light absorbing portion 150 to improve the production yield of the two-color mold lens 100. In the first embodiment, the opening 154 is polygonal.

The number of sides of the opening 154 of the light absorbing portion 150 is m, which satisfies the following condition: 3 < m < 13. In this way, it helps to balance the image quality with The molding yield of the two-color molded lens 100. In the first embodiment, the number of sides of the opening 154 is eight, that is, the opening 154 is octagonal.

The minimum diameter of the opening 154 through the optical axis is ψBmin, and the maximum diameter of the opening 154 through the optical axis is ψBmax, which satisfies the following condition: 0.35 < ψ Bmin / ψ Bmax < 0.75. Thereby, the imaging lens 1000 can have a better light-shielding efficiency while maintaining the optical specifications.

As can be seen from FIGS. 1A and 1B, the light absorbing portion 150 may further include a ring-shaped recessed structure 155 which is recessed by the surface of the light absorbing portion 150 in the direction parallel to the optical axis. Thereby, the annular recessed structure 155 can serve as a receiving groove of the glue material 1300 to prevent the glue material 1300 from overflowing. In the first embodiment, the light absorbing portion 150 further includes a ring-shaped recessed structure 155 which is recessed by the light absorbing portion 150 in the direction of the parallel optical axis of the image side surface 102 of the two-color molded lens 100, and the annular recessed structure The 155 is adjacent to the lens barrel 1200 to connect the glue material 1300 to the light absorbing portion 150 and the lens barrel 1200.

The depth of the annular recessed structure 155 in the direction parallel to the optical axis is w, which satisfies the following condition: 0.015 mm < w < 0.35 mm. Thereby, the annular recessed structure 155 close to the outer edge of the two-color molded lens 100 has a suitable depth to improve the stability of the fixed two-color molded lens 100.

The light absorbing portion 150 may further include a ring-shaped convex structure 156 that surrounds the opening 154. Thereby, it helps to control the range of the glue material 1300. In the first embodiment, the light absorbing portion 150 further includes a ring-shaped convex structure 156 surrounding the opening 154, and the annular convex structure 156 is adjacent to the annular concave structure 155 and closer to the optical axis than the annular concave structure 155. .

The width of the annular projection structure 156 in the radial direction of the optical axis is t, which satisfies the following condition: 0.04 mm < t < 0.80 mm. Thereby, the overflow of the glue material 1300 is further prevented.

The light absorbing portion 150 may further include a rough surface 157 that is not in contact with the light transmitting portion 130, that is, the rough surface 157 may be located on a portion of the surface or the entire surface of the light absorbing portion 150 that is not connected to the light transmitting portion 130. Thereby, the degree of reflection of the surface of the two-color molded lens 100 can be reduced. In the first embodiment, the rough surface 157 is located on a part of the surface of the light absorbing portion 150 on the image side surface 102 of the two-color mold lens 100. Moreover, the rough surface 157 is transferred to the surface of the mold to be roughened surface 157 during the injection molding process of the two-color mold lens 100. The processing property may be Electrical Discharge Machining (EDM) or Sand Blasting. And the laser-etching etching (Laser Related Etching) or the like, the rough surface 157 can reduce the Gloss Level of the surface of the two-color molding lens 100 to reduce the influence of stray light and improve the image quality.

The light absorbing portion 150 may further include an anti-reflection film layer 158 plated on at least a portion of the surface of the light absorbing portion 150 that is not in contact with the light transmitting portion 130, that is, the anti-reflective film layer 158 is not plated on the light absorbing portion 150. The partial or total surface to which the light portion 130 is connected, the anti-reflection film layer 158 may be plated on the light absorbing portion 150 on the image side surface 102. Thereby, the degree of reflection of the surface of the two-color molded lens 100 can be reduced. Further, an anti-reflection film layer (not otherwise labeled) may be plated on the light transmitting portion 130 on the image side surface 102. In the first embodiment, the anti-reflection film layer 158 is plated on the entire surface of the light absorbing portion 150 on the image side surface 102 of the two-color mold lens 100. In addition, the anti-reflective film layer 158 may be a plurality of layers of cerium oxide (SiO ₂ ) and a plurality of layers of titanium dioxide (TiO ₂ ) which are alternately laminated on the surface of the light absorbing portion 150 by vapor deposition, and the material, the number of layers and the manner of adhesion. Adjustable to meet your needs.

Referring to Table 1 below, the imaging lens 1000 according to the first embodiment of the present invention is listed in accordance with the data defined by the foregoing parameters, and is illustrated in FIG. 1B and FIGS. 1E to 1G.

<Second embodiment>

Referring to FIG. 2A, a schematic diagram of an imaging lens 2000 according to a second embodiment of the present invention is shown. As can be seen from FIG. 2A, the imaging lens 2000 includes a plurality of lenses, one of which is a two-color molded lens 200.

Referring to FIG. 2B, a schematic diagram of the two-color molded lens 200 in the second embodiment is shown. 2A and 2B, the two-color molded lens 200 includes a light transmitting portion 230 and a light absorbing portion 250, that is, a two-color molded lens including a light transmitting portion 230 and a light absorbing portion 250 after secondary injection molding. 200.

The light transmitting portion 230 includes an optical effective area 233 through which the imaging light passes through the optical effective area 233 and forms an image on the imaging surface (not shown).

The light absorbing portion 250 is located only on one of the object side surface 201 and the image side surface 202 of the two-color mold lens 200 (in the second embodiment, the surface is the image side surface 202), and may have a protruding portion from the image side surface. 202 extends to the object side surface 201 to increase the contact area between the light absorbing portion 250 and the light transmitting portion 230, thereby improving the adhesion between the two. The plastic material of the light absorbing portion 250 has the property of absorbing visible light, the color of which is black, and the plastic material of the transparent portion 230 has visible light transmission property, and the color thereof is transparent and colorless, so the plastic material and color of the light absorbing portion 250 are transparent. The plastic part and color of the light part 230 are different. The light absorbing portion 250 includes an opening 254, and the opening 254 is disposed corresponding to the optical effective area 233.

For details, please refer to FIG. 2C and FIG. 2D, FIG. 2C is a plan view of the two-color molded lens 200 in the second embodiment, and FIG. 2D is a second view of the two-color molded lens 200 in the second embodiment. A top view. 2C and 2D, the opening 254 of the light absorbing portion 250 is non-circular, and the opening 254 is polygonal, and the number of sides of the opening 254 is eight, that is, the opening 254 is octagonal.

The optical effective area 233 includes a non-circular outer edge 239 on the image side surface 202 of the two-color molded lens 200, and the opening 254 of the light absorbing portion 250 is disposed corresponding to the non-circular outer edge 239 of the optical effective area 233, and is non-circular The area enclosed by the rim 239 is equal to the area of the opening 254.

2A and 2B, the optical effective area 233 is aspherical on the image side surface 202 of the two-color molded lens 200, and the optical effective area 233 includes at least one opposite of the off-axis of the image side surface 202 of the two-color molded lens 200. A curved point in which the image side surface 202 is concave at the near optical axis. Light absorbing portion 250 The image side surface 202 of the two-color molded lens 200 is located, and the point at which the optical effective area 233 is closest to the image forming surface is closer to the image forming surface than the light absorbing portion 250.

The imaging lens 2000 sequentially includes lenses 2101, 2102, 2103, 2104 and a two-color molded lens 200 from the object side to the image side, wherein the number of lenses of the imaging lens 2000 is five, and the two-color molded lens 200 is in the lens of the imaging lens 2000. The one closest to the imaging surface.

The imaging lens 2000 further includes a glue material 2300, and the glue material 2300 is connected to the light absorbing portion 250 and the lens barrel 2200. The light absorbing portion 250 further includes a ring-shaped recessed structure 255 that surrounds the opening 254 and is recessed by the light absorbing portion 250 in the direction of the parallel optical axis of the image side surface 202 of the two-color mold lens 200, and the annular recessed structure 255 Adjacent to the lens barrel 2200, the glue material 2300 is connected to the light absorbing portion 250 and the lens barrel 2200. The light absorbing portion 250 further includes a ring-shaped convex structure 256 that surrounds the opening 254, and the annular convex structure 256 is adjacent to the annular concave structure 255 and is closer to the optical axis than the annular concave structure 255.

The light absorbing portion 250 further includes a rough surface 257 that is not in contact with the light transmitting portion 230. The light absorbing portion 250 further includes an anti-reflection film layer 258 (not shown as a thick line in the anti-reflection film layer 158 of the first embodiment) which is plated on a portion of the light absorbing portion 250 that is not in contact with the light transmitting portion 230.

Please refer to FIG. 2E, and FIG. 2E is a cross-sectional view taken along line 2E-2E of FIG. 2D. Please refer to the following list 2, which lists the parameters of the imaging lens 2000 of the second embodiment of the present invention, m, N, t, w, ψ Bmax, ψ Bmin, ψ L, ψ M, ψ Wmax, ψ Wmin, ψ Bmin / ψ Bmax, ψ Bmin / ψ L and The data of ψWmin/ψWmax, the definition of each parameter is the same as that of the first embodiment, and is shown in FIGS. 2B to 2E.

<Third embodiment>

Please refer to FIG. 3A, which is a schematic diagram of an imaging lens 3000 according to a third embodiment of the present invention. As can be seen from FIG. 3A, the imaging lens 3000 includes a plurality of lenses, one of which is a two-color molded lens 300.

Referring to FIG. 3B, a schematic diagram of the two-color molded lens 300 in the third embodiment is shown. As can be seen from FIGS. 3A and 3B , the two-color molded lens 300 includes the light transmitting portion 330 and the light absorbing portion 350 , that is, a two-color molded lens including the light transmitting portion 330 and the light absorbing portion 350 after the second injection molding. 300.

The light transmitting portion 330 includes an optical effective area 333 through which the imaging light passes through the optical effective area 333 and forms an image on the imaging surface (not shown).

The light absorbing portion 350 is located on one of the object side surface 301 and the image side surface 302 of the two-color mold lens 300 (in the third embodiment, the surface is the image side surface 302). The plastic material of the light absorbing portion 350 has the property of absorbing visible light, the color of which is black, and the plastic material of the transparent portion 330 has visible light transmission property, and the color thereof is transparent and colorless, so the plastic material and color of the light absorbing portion 350 are transparent. The plastic part and color of the light part 330 are different. Light The absorbing portion 350 includes an opening 354, and the opening 354 is disposed corresponding to the optical effective area 333.

For details, please refer to FIG. 3C and FIG. 3D, FIG. 3C is a plan view of the two-color molded lens 300 in the third embodiment, and FIG. 3D is a view showing another two-color molded lens 300 in the third embodiment. A top view. As can be seen from FIGS. 3C and 3D, the opening 354 of the light absorbing portion 350 is non-circular, and the opening 354 is polygonal, and the number of sides of the opening 354 is eight, that is, the opening 354 is octagonal.

The optical effective area 333 includes a non-circular outer edge 339 on the image side surface 302 of the two-color molded lens 300, and the opening 354 of the light absorbing portion 350 is disposed corresponding to the non-circular outer edge 339 of the optical effective area 333, and is non-circular The area enclosed by the rim 339 is equal to the area of the opening 354.

As can be seen from FIGS. 3A and 3B, the optical effective area 333 is aspherical on the image side surface 302 of the two-color molded lens 300, and the optical effective area 333 includes at least one anti-offset at the off-axis of the image side surface 302 of the two-color molded lens 300. A curved point in which the image side surface 302 is concave at the near optical axis. The light absorbing portion 350 is located on the image side surface 302 of the two-color molded lens 300, and the point at which the optical effective region 333 is closest to the image forming surface is closer to the image forming surface than the light absorbing portion 350.

The imaging lens 3000 sequentially includes lenses 3101, 3102, 3103, 3104, 3105 and a two-color molded lens 300 from the object side to the image side, wherein the number of lenses of the imaging lens 3000 is six, and the two-color molded lens 300 is the imaging lens 3000. One of the lenses closest to the imaging surface.

The imaging lens 3000 further includes a glue material 3300, and the glue material 3300 is connected to the light absorbing portion 350 and the lens barrel 3200. Light absorbing part 350 is further included a ring-shaped recessed structure 355 that surrounds the opening 354 and is recessed by the light absorbing portion 350 in the direction of the parallel optical axis of the image side surface 302 of the two-color molded lens 300, and the annular recessed structure 355 is adjacent to the lens barrel 3200. The glue material 3300 is connected to the light absorbing portion 350 and the lens barrel 3200.

The light absorbing portion 350 further includes a rough surface 357 that is not in contact with the light transmitting portion 330. The light absorbing portion 350 further includes an anti-reflection film layer 358 (not shown as a thick line in the anti-reflection film layer 158 of the first embodiment), which is plated on a portion of the light absorbing portion 350 that is not in contact with the light transmitting portion 330.

Please refer to FIG. 3E, and FIG. 3E is a cross-sectional view taken along line 3E-3E of FIG. 3D. Please refer to the following Table 3, which lists the parameters of the imaging lens 3000 of the third embodiment of the present invention, m, N, w, ψBmax, ψBmin, ψL, ψM, ψWmax, ψWmin, ψBmin/ψBmax, ψBmin/ψL, and ψWmin/ For the data of ψWmax, the definition of each parameter is the same as that of the first embodiment, and is illustrated as shown in FIGS. 3B to 3E.

<Fourth embodiment>

Referring to FIG. 4, a schematic diagram of an electronic device 10 according to a fourth embodiment of the present invention is shown. The electronic device 10 of the fourth embodiment is a smart phone, and the electronic device 10 includes an imaging lens module 11 and an imaging lens module 11 package. An imaging lens according to the present invention (not shown) is included. Thereby, with good image quality, it can meet the high-standard imaging requirements of electronic devices today. In addition, the imaging lens module 11 may further include an electronic photosensitive element (not shown) disposed at or adjacent to an imaging surface of the imaging lens (not shown). Preferably, the electronic device 10 may further include, but is not limited to, a display unit, a control unit, a storage unit, a temporary storage unit (RAM), a read only storage unit (ROM), or a combination thereof. .

<Fifth Embodiment>

Referring to FIG. 5, a schematic diagram of an electronic device 20 according to a fifth embodiment of the present invention is shown. The electronic device 20 of the fifth embodiment is a tablet computer, and the electronic device 20 includes an imaging lens module 21 including an imaging lens (not shown) and an electronic photosensitive element (not shown) according to the present invention. The electronic photosensitive element is disposed on an imaging surface of the imaging lens (not shown).

<Sixth embodiment>

Please refer to FIG. 6, which is a schematic diagram of an electronic device 30 according to a sixth embodiment of the present invention. The electronic device 30 of the sixth embodiment is a wearable device. The electronic device 30 includes an imaging lens module 31. The imaging lens module 31 includes an imaging lens (not shown) and an electronic photosensitive element according to the present invention. Not disclosed), wherein the electronic photosensitive element is disposed on an imaging surface of the imaging lens (not shown).

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.

Claims (18)

An imaging lens comprising a plurality of lenses, at least one of which is a two-color molded lens, the two-color molded lens comprising: a light transmissive portion comprising: an optically active region; and a light absorbing portion located only One of the object side surface and one of the image side surfaces of the two-color molded lens, the plastic material and color of the light absorbing portion are different from the plastic material and color of the light transmitting portion, and the light absorbing portion comprises: an opening , which is non-circular and corresponding to the optical effective area; wherein the minimum diameter of the opening through the optical axis is ψBmin, and the maximum diameter of the opening through the optical axis is ψBmax, which satisfies the following condition: 0.35<ψBmin/ ψBmax<0.75. The imaging lens according to claim 1, wherein the light transmitting portion and the light absorbing portion are formed by secondary injection molding. The imaging lens according to claim 2, wherein the light absorbing portion further comprises: a ring-shaped concave structure which is recessed by a surface of the light absorbing portion in a direction parallel to the optical axis. The imaging lens according to claim 3, wherein the annular recessed structure has a depth in the direction parallel to the optical axis of w, which satisfies the following condition: 0.015 mm < w < 0.35 mm. The imaging lens of claim 2, wherein the light absorbing portion further comprises: A ring-shaped raised structure surrounds the opening. The imaging lens according to claim 5, wherein the annular convex structure has a width t in the radial direction of the optical axis, which satisfies the following condition: 0.04 mm < t < 0.80 mm. The imaging lens of claim 1, wherein the opening is a polygon. The imaging lens according to claim 7, wherein the number of sides of the opening is m, which satisfies the following condition: 3 < m < 13. The imaging lens of claim 2, wherein the optical effective area is aspherical on the object side surface of the two-color molded lens and the surface in the image side surface. The imaging lens according to claim 9, wherein the light absorbing portion is located on the image side surface of the two-color molded lens, and a point at which the optical effective region is closest to an imaging surface is closer to the imaging surface than the light absorbing portion. . The imaging lens of claim 9, wherein the optical effective area includes at least one inflection point on the object side surface of the two-color molded lens and the surface in the image side surface. The imaging lens of claim 9, wherein the optical effective area comprises a non-circular outer edge on the object side surface of the two-color molded lens and the surface in the image side surface. The imaging lens according to claim 2, wherein a maximum outer diameter of the light transmitting portion is ψL, and a maximum outer diameter of the light absorbing portion is ψM, which satisfies the following condition: ψL<ψM. The imaging lens of claim 2, wherein the light absorbing portion further comprises: a rough surface that is not in contact with the light transmitting portion. The imaging lens of claim 2, wherein the light absorbing portion further comprises: an anti-reflection film layer plated on at least a portion of the surface of the light absorbing portion that is not in contact with the light transmitting portion. The imaging lens of claim 1, wherein the two-color molded lens is one of the lenses closest to an imaging surface. The imaging lens of claim 16, further comprising: a glue material connected to the light absorbing portion. An electronic device comprising: an imaging lens module comprising: the imaging lens according to claim 1; and an electronic photosensitive element disposed on an imaging surface of the imaging lens.