TWI657281B - Imaging lens set with plastic lens element, imaging lens module and electronic device - Google Patents

Abstract

An imaging lens assembly comprising at least three plastic lenses and at least one light shielding film, and the three plastic lenses are a first lens, a second lens and a third lens from the object side to the image side along a central axis. The first lens includes a first straight abutment portion and a first conical surface on an image side surface thereof. The second lens includes a second straight abutting portion and a second conical surface on the object side surface and the image side surface, and a fourth flat bearing surface and a fourth conical surface. The third lens includes a third straight abutting portion and a third conical surface on the object side surface thereof. The first flat bearing portion overlaps with the second straight bearing portion, the first conical surface is in contact with the second conical surface, and the third conical surface is in contact with the fourth conical surface. The light shielding sheets respectively overlap the fourth flat bearing portion and the third straight bearing portion. When certain conditions are met, the image quality can be effectively improved.

Description

 Imaging lens group, plastic lens module and electronic device containing plastic lens  

The present invention relates to an imaging lens assembly and an imaging lens module including a plastic lens, and more particularly to an imaging lens assembly and an imaging lens module for use in a portable electronic device.

In recent years, portable electronic devices have developed rapidly. For example, smart electronic devices and tablet computers have been filled in the lives of modern people, and the lens modules mounted on portable electronic devices have also prospered. However, as technology advances, the quality requirements of the lens module are becoming higher and higher. Therefore, in addition to the improvement in optical design, the lens module needs to be improved in manufacturing precision.

14 is a cross-sectional view of a conventional imaging lens module 6000. As can be seen from FIG. 14, the imaging lens module includes a plastic lens barrel 6100, an optical lens group 6200, and at least one light shielding sheet 6300. The optical lens group 6200 includes a lens 6210, a lens 6220, a lens 6230, a lens 6240, and a lens 6250. The lens 6210, the lens 6220, the lens 6230, the lens 6240, and the lens 6250 are all disposed in the plastic lens barrel 6100, and the light shielding sheet 6300 is disposed between the lens 6230 and the lens 6240. As the pixel size is increased, the difference in outer diameter between the lens 6220, the lens 6230, and the lens 6240 is gradually increased, and the required thickness of the light shielding sheet 6300 is getting thinner and thinner. However, based on the assembly limitation of the imaging lens module, the light shielding sheet 6300 can only be clamped between the adjacent lens 6230 and the lens 6240, and lacks a design that can share the pressing force of the light shielding sheet 6300. Therefore, the light-shielding sheet which is abnormally squeezed during the assembly process will be warped, and the center opening will be undulated, which may also be called Deflection. For increasingly harsh photographic quality, such a small distortion can affect the image quality of a high-resolution lens when shooting a strong light source, making imaging of large-brightness objects lower than expected.

In summary, how to simultaneously consider the requirements of miniaturized lens modules in suppressing stray light and assembly accuracy, and thus improve the imaging quality of miniaturized optical lenses to meet the high-standard imaging requirements of electronic devices, has become the most important thing today. One of the topics.

The invention provides an imaging lens group, an imaging lens module and an electronic device, which share the pressing force of the light shielding sheet and the outer diameter by the axial connection structure between the plastic lens and the plastic lens and the light shielding sheet. The lenses with large gaps can be aligned with each other to improve the precision of the assembly of the imaging lens module, thereby effectively improving the image quality.

According to the present invention, there is provided an imaging lens unit comprising at least three plastic lenses and at least one light shielding sheet, and the imaging lens group has a central axis. Each of the at least three plastic lenses and the at least one light shielding film comprises an object side surface and an image side surface opposite to the object side surface, and at least three plastic lenses are sequentially arranged from the object side to the image side along the central axis. a lens, a second lens and a third lens. The first lens includes a first flat bearing portion and a first conical surface, wherein the first flat bearing portion is located on the image side surface of the first lens, and the first conical surface is located on the image side surface of the first lens. And the first conical surface is closer to the central axis than the first flat bearing portion. The second lens includes a second flat bearing portion, a second conical surface, a fourth flat bearing surface and a fourth conical surface. The second flat bearing portion is located on the object side surface of the second lens, the second conical surface is located on the object side surface of the second lens, and the second conical surface is closer to the central axis than the second flat bearing portion. Furthermore, the fourth flat bearing portion is located on the image side surface of the second lens, the fourth conical surface is located on the image side surface of the second lens, and the fourth conical surface is away from the central axis than the fourth flat bearing portion. The third lens includes a third flat bearing portion and a third conical surface, wherein the third flat bearing portion is located on the object side surface of the third lens, and the third conical surface is located on the object side surface of the third lens, and The third conical surface is away from the central axis than the third straight abutment. Specifically, the first straight bearing portion overlaps with the second straight bearing portion, the first conical surface is in contact with the second conical surface, and the third conical surface is in contact with the fourth conical surface. Specifically, the light shielding sheet has a central opening and is coaxially arranged with the aforementioned three plastic lenses. Furthermore, the light shielding sheet is disposed between the second lens and the third lens and further comprises an outer diameter surface, wherein the outer diameter surface is connected to the object side surface and the image side surface of the light shielding sheet and is coaxial with the central opening. Further, the object side surface of the light shielding sheet overlaps with the fourth flat bearing portion, and the image side surface of the light shielding sheet overlaps with the third straight bearing portion. Specifically, the minimum diameter of the fourth conical surface is ψ4, and the maximum diameter of the second conical surface is ψ2, which satisfies the following condition: 0.13 mm < (ψ4-ψ2)/2<1.20 mm.

According to the imaging lens group described in the preceding paragraph, the first conical surface and the second conical surface, and the fourth conical surface and the third conical surface may be used to assemble each other and to form a positive central axis.

According to the imaging lens assembly of the preceding paragraph, the diameter of the outer diameter surface of the light shielding sheet is D, and the minimum diameter of the fourth conical surface is ψ4, which satisfies the following condition: |ψ4-D|/2 0.05mm.

According to the imaging lens group described in the preceding paragraph, the minimum diameter of the fourth conical surface is ψ4, and the maximum diameter of the second conical surface is ψ2, which satisfies the following condition: 0.18 mm < (ψ4-ψ2)/2<0.85 mm.

According to the imaging lens assembly of the preceding paragraph, the diameter of the outer diameter surface of the light shielding sheet is D, the minimum diameter of the fourth conical surface is ψ4, and the maximum diameter of the second conical surface is ψ2, which satisfies the following condition: 0.6<( π^2)×((ψ4-ψ2)/D)<3.6, and it more specifically satisfies the following condition: 0.82<(π^2)×((ψ4-ψ2)/D)<2.9.

According to the imaging lens assembly of the preceding paragraph, the angle between the second conical surface and the central axis is α1 and corresponds to the angle between the first conical surface and the central axis, and the angle between the fourth conical surface and the central axis is α2 and The angle between the three conical surfaces and one of the central axes corresponds to each other, which satisfies the following conditions: 3 degrees < α1 < 42 degrees; and 3 degrees < α 2 < 42 degrees.

According to the imaging lens unit of the preceding paragraph, the minimum inner diameter of the central opening of the light shielding sheet is ψi, and the diameter of the outer diameter surface of the light shielding sheet is D, which satisfies the following condition: 0.4 < ψi / D < 0.76.

According to the imaging lens assembly of the preceding paragraph, the outer diameter of the first lens is D1, the outer diameter of the second lens is D2, and the minimum diameter of the fourth conical surface is ψ4, which satisfies the following condition: D1 Ψ4<D2.

According to the imaging lens group described in the preceding paragraph, the second conical surface and the third conical surface may be in contact with only the fourth conical surface.

According to the imaging lens group described in the preceding paragraph, the outer diameter of the first lens is D1, and the minimum diameter of the fourth conical surface is ψ4, which satisfies the following condition: 0.9 < ψ 4 / D1 < 1.35, and more specifically, the following Conditions: 0.94 < ψ 4 / D1 < 1.15.

According to the imaging lens assembly of the preceding paragraph, the angle between the fourth conical surface and the central axis is α2 and corresponds to an angle between the third conical surface and the central axis, which satisfies the following condition: 13 degrees < α2 < 33 degrees.

According to the imaging lens group described in the preceding paragraph, the outer diameter of the second lens is D2, and the width of the fourth conical surface is w4, which satisfies the following condition: 0.1 < (π^2) × w4 / D2 < 0.45.

According to the imaging lens assembly of the preceding paragraph, the width of the fourth conical surface is w4, the minimum diameter of the fourth conical surface is ψ4, and the maximum diameter of the second conical surface is ψ2, which satisfies the following condition: 2.2<(ψ4-ψ2 ) / (2 × w4) < 6.2.

According to the imaging lens assembly of the preceding paragraph, the width of the fourth conical surface is w4, the minimum diameter of the fourth conical surface is ψ4, and the maximum diameter of the second conical surface is ψ2, which satisfies the following condition: 2.8<(ψ4-ψ2 ) / (2 × w4) < 5.4.

According to the imaging lens assembly of the preceding paragraph, a portion of the third conical surface may not overlap the second lens in a direction perpendicular to and away from one of the central axes.

According to the present invention, there is further provided an imaging lens module which can comprise a plastic lens barrel and an imaging lens group as described in the preceding paragraph. The plastic lens barrel includes a lens barrel opening, and the minimum inner diameter of the lens barrel opening is the aperture of the imaging lens module, and the imaging lens unit is disposed in the plastic lens barrel. Thereby, the imaging quality of the imaging lens module can be improved.

According to the present invention, there is provided an electronic device, which may include the imaging lens module and an electronic photosensitive element as described in the preceding paragraph, wherein the electronic photosensitive element is disposed on an imaging surface of the imaging lens module. This can meet the needs of today's miniaturization and high-definition imaging quality of electronic devices.

10, 20, 30‧‧‧ electronic devices

11‧‧‧ camera module

16‧‧‧Sensor components

17‧‧‧Auxiliary optics

18‧‧‧Image signal processing components

19‧‧‧User interface

19a‧‧‧Touch screen

19b‧‧‧ button

77‧‧‧Soft circuit board

78‧‧‧Connector

14‧‧‧Autofocus components

15‧‧‧Optical anti-shake components

13‧‧‧Electronic photosensitive element

12, 22, 32, 1000, 2000, 3000, 4000, 5000, 6000‧‧‧ imaging lens module

1100, 2100, 3100, 4100, 5100, 6100‧‧‧ plastic tube

1110, 2110, 3110, 4110, 5110‧‧‧ lens barrel opening

1110a, 2110a, 3110a, 4110a, 5110a‧‧‧ Minimum inner diameter position of the lens barrel opening

1200, 2200, 3200, 4200, 5200, 6200‧‧‧ optical lens sets

1210, 1220, 1230, 2210, 2220, 2230, 3210, 3220, 3230, 4210, 4220, 5210, 5220, 6210, 6220, 6230, 6240, 6250 ‧ lens

1300, 2300, 3300, 4300, 5300‧‧‧

1400, 2400, 3400, 4400, 5400‧‧‧

1500, 2500, 3500, 4500, 5500‧‧‧ imaging surface

4600, 5600‧‧‧ glass panels

100, 200, 300, 400, 500‧‧‧ imaging lens sets

110, 210, 310, 410, 510‧‧‧ first lens

120, 220, 320, 420, 520‧‧‧ second lens

130, 230, 330, 430, 530‧‧‧ third lens

113, 213, 313, 413, 513 ‧ ‧ the first straight bearing

114, 214, 314, 414, 514‧‧‧ first conical surface

123, 223, 323, 423, 523‧‧‧ second straight bearing

124, 224, 324, 424, 524‧‧‧ second conical surface

125, 225, 325, 425, 525 ‧ ‧ fourth flat bearing

126, 226, 326, 426, 526‧‧‧ fourth conical surface

133, 233, 333, 433, 533 ‧ ‧ third straight bearing

134, 234, 334, 434, 534‧‧‧ third conical surface

111, 211, 311, 411, 511 ‧ ‧ the object side surface of the first lens

112, 212, 312, 412, 512‧‧‧ image side surface of the first lens

121, 221, 321, 421, 521‧‧‧ the object side surface of the second lens

122, 222, 322, 422, 522‧‧‧ image side surface of the second lens

131, 231, 331, 431, 531‧‧ ‧ the object side surface of the third lens

132, 232, 332, 432, 532‧‧‧ image side surface of the third lens

111a, 211a, 311a, 411a, 511a, 112a, 212a, 312a, 412a, 512a, 121a, 221a, 321a, 421a, 521a, 122a, 222a, 322a, 422a, 522a, 131a, 231a, 331a, 431a, 531a, 132a, 232a, 332a, 432a, 532a‧‧‧ optical effective area

111b, 211b, 311b, 411b, 511b, 112b, 212b, 312b, 412b, 512b, 121b, 221b, 321b, 421b, 521b, 122b, 222b, 322b, 422b, 522b, 131b, 231b, 331b, 431b, 531b, 132b, 232b, 332b, 432b, 532b‧‧‧ lens peripheral area

140, 240, 340, 440, 540‧‧ ‧ shading film

141, 241, 341, 441, 541‧‧ ‧ the side surface of the visor

142, 242, 342, 442, 542‧‧ ‧ image side surface of the visor

143, 243, 343, 443, 543‧‧ ‧ outer side surface of the visor

144, 244, 344, 444, 544‧‧ ‧ central opening of the visor

144a, 244a, 344a, 444a, 544a‧‧ ‧ inner opening of the central opening of the visor

Z‧‧‧ center axis

D1‧‧‧ outer diameter of the first lens

D2‧‧‧ outer diameter of the second lens

D3‧‧‧ outer diameter of the third lens

D‧‧‧ Diameter of the outer diameter of the visor

ψ2‧‧‧Maximum diameter of the second conical surface

ψ4‧‧‧The smallest diameter of the fourth conical surface

最小i‧‧‧The minimum inner diameter of the central opening of the visor

W4‧‧‧Width of the fourth conical surface

11‧‧‧An angle between the second conical surface and the central axis

22‧‧‧An angle between the fourth conical surface and the central axis

33‧‧‧An angle between the first conical surface and the central axis

44‧‧‧An angle between the third conical surface and the central axis

θ‧‧‧An angle between the inner surface of the central opening of the visor and the central axis

1d-1d, 2d-2d‧‧‧ hatching

1A is a schematic view showing an imaging lens group according to a first embodiment of the present invention; FIG. 1B is a schematic exploded view of the imaging lens group of FIG. 1A; and FIG. 1C is a view showing an imaging lens group not having a 1A image; FIG. 1D is a schematic cross-sectional view of the opaque sheet along the section line 1d-1d in the imaging lens group of FIG. 1C; FIG. 2A is a schematic view showing the imaging lens unit of the second embodiment of the present invention; 2B is a schematic view showing the explosion of the imaging lens group of FIG. 2A; FIG. 2C is a plan view showing the light shielding sheet of the imaging lens group of FIG. 2A; and FIG. 2D is a view showing the imaging lens group of FIG. 2C. FIG. 3A is a schematic view showing an imaging lens group according to a third embodiment of the present invention; FIG. 3B is a schematic diagram showing an explosion of the imaging lens group in FIG. 3A; Figure 4 is a schematic cross-sectional view showing a light-shielding sheet in the imaging lens unit of Figure 3A; Figure 4A is a schematic view showing an imaging lens unit according to a fourth embodiment of the present invention; and Figure 4B is a view showing an imaging lens group of Figure 4A. Schematic diagram of the explosion; Figure 4C shows the imaging lens group of Figure 4A FIG. 5A is a schematic view showing an imaging lens group according to a fifth embodiment of the present invention; FIG. 5B is a schematic exploded view of the imaging lens group of FIG. 5A; FIG. 5C is a fifth drawing; FIG. 6 is a cross-sectional view showing an imaging lens module according to a sixth embodiment of the present invention; and FIG. 7 is a view showing an imaging lens module according to a seventh embodiment of the present invention; FIG. 8 is a cross-sectional view showing an imaging lens module according to an eighth embodiment of the present invention; FIG. 9 is a cross-sectional view showing an imaging lens module according to a ninth embodiment of the present invention; FIG. 11A is a schematic diagram of an electronic device according to an eleventh embodiment of the present invention; FIG. 11B is a schematic view showing an electronic device according to an eleventh embodiment; FIG. 11C is a block diagram showing an electronic device according to an eleventh embodiment; FIG. 12 is a schematic view showing an electronic device according to a twelfth embodiment of the present invention; and FIG. 13 is a view showing the present invention; Electronic package of the thirteenth embodiment Schematic; and a sectional view of FIG. 14 shows a conventional system the imaging lens module.

The invention provides an imaging lens set comprising at least three plastic lenses and at least one light shielding film, and each of the three plastic lenses and the light shielding film comprises an object side surface and an image side surface opposite to the object side surface, and The light shielding sheet has a central opening and is coaxially arranged with the aforementioned three plastic lenses. Therefore, the use of the plastic lens can generally reduce the production cost of the imaging lens module, and the use of the light shielding film can shield unnecessary light inside the imaging lens module.

In the present invention, the three plastic lenses are sequentially a first lens, a second lens and a third lens from the object side to the image side along a central axis of the imaging lens group. Specifically, the first lens includes a first flat bearing portion and a first conical surface, wherein the first flat bearing portion is located on the image side surface of the first lens, and the first conical surface is located on the image of the first lens a side surface, and the first conical surface is closer to the central axis than the first flat abutment. The second lens includes a second flat bearing portion, a second conical surface, a fourth flat bearing surface and a fourth conical surface. The second flat bearing portion is located on the object side surface of the second lens, the second conical surface is located on the object side surface of the second lens, and the second conical surface is closer to the central axis than the second flat bearing portion. The fourth flat bearing portion is located on the image side surface of the second lens, the fourth conical surface is located on the image side surface of the second lens, and the fourth conical surface is away from the central axis than the fourth flat bearing portion. The third lens includes a third flat bearing portion and a third conical surface, wherein the third flat bearing portion is located on the object side surface of the third lens, and the third conical surface is located on the object side surface of the third lens, and The third conical surface is away from the central axis than the third straight abutment. Furthermore, the light shielding sheet may be disposed between the second lens and the third lens and further include an outer diameter surface, wherein the outer diameter surface is connected to the object side surface and the image side surface of the light shielding sheet and is coaxial with the central opening.

Specifically, the first straight abutting portion may overlap with the second straight abutting portion, the first conical surface may be in contact with the second conical surface, and the third conical surface may be in contact with the fourth conical surface. Further, the object side surface of the light shielding sheet may overlap with the fourth straight bearing portion, and the image side surface of the light shielding sheet may overlap with the third straight bearing portion. The minimum diameter of the fourth conical surface is ψ4, and the maximum diameter of the second conical surface is ψ2, which satisfies the following condition: 0.13 mm < (ψ4-ψ2)/2<1.20 mm.

Therefore, a contact between the first lens and the second lens can be formed by the contact between the first conical surface and the second conical surface and the overlap between the first flat bearing portion and the second flat bearing portion The first axial connection structure is to assemble the first lens and the second lens and to image the central axis of the lens group. The contact between the fourth conical surface and the third conical surface and the overlap between the object side surface and the image side surface of the light shielding sheet and the fourth flat bearing portion and the third flat bearing portion respectively can further form a The second axial connection structure is to assemble the second lens and the third lens and to image the central axis of the lens group. That is to say, according to the design of the first axial connection structure and the second axial connection structure, the lenses of the outer diameter difference can be aligned with each other to improve the precision during assembly.

Furthermore, in the present invention, the first conical surface and the second conical surface may be assembled to each other and to the positive central axis, and the fourth conical surface and the third conical surface may also be used to assemble each other and to the positive central axis. Thereby, since the dimensional accuracy of the conical surface is easier to control, the use of the conical surface for assembly will facilitate mass production. Further, the minimum diameter of the fourth conical surface and the maximum diameter of the second conical surface may further satisfy the following conditions: 0.18 mm < (ψ4-ψ2)/2 < 0.85 mm. Thereby, the position of the conical surface can be more clearly defined, thereby avoiding the problem of poor ejection which may be caused when the plurality of plastic lenses are manufactured by the plastic forming process. In addition, in the present invention, the diameter of the first conical surface of the first lens is tapered by the image side surface toward the object side surface, and the second conical surface of the second lens and the fourth conical surface and the third conical surface of the third lens The diameter of each of the faces is also tapered by the image side surface toward the object side surface, but the invention is not limited thereto.

In the present invention, the diameter of the outer diameter surface of the light shielding sheet is D, and the minimum diameter of the fourth conical surface is ψ4, which satisfies the following conditions: |ψ4-D|/2 0.05mm. Thereby, since the difference between the two is small, it is possible to avoid excessive tilting of the light shielding sheet, thereby affecting the light shielding efficiency. Furthermore, when the diameter of the outer diameter surface of the light shielding sheet is D, the minimum diameter of the fourth conical surface is ψ4, and the maximum diameter of the second conical surface is ψ2, the following conditions can be satisfied: 0.6 < (π^2) × ((ψ4-ψ2)/D)<3.6. Thereby, the space for accommodating the light shielding sheet can be increased to shield more stray light which may come from the second conical surface. Preferably, the diameter of the outer diameter surface of the light shielding sheet, the minimum diameter of the fourth conical surface, and the maximum diameter of the second conical surface further satisfy the following conditions: 0.82 < (π^2) × ((ψ4-ψ2)/ D) < 2.9 to provide a better coverage range. Further, when the minimum inner diameter of the central opening of the light shielding sheet is ψi, the diameter of the outer diameter surface of the light shielding sheet is D, which satisfies the following condition: 0.4 < ψi / D < 0.76. Thereby, it is possible to prevent the light shielding sheet having an excessive opening in the center from affecting the image quality, and the light shielding sheet having a small opening in the center affects the lens size.

In the present invention, the angle between the second conical surface and one of the central axes is α1 and corresponds to an angle between the first conical surface and the central axis, and it satisfies the following condition: 3 degrees < α1 < 42 degrees. The angle between the fourth conical surface and the central axis is α2 and corresponds to an angle between the third conical surface and the central axis, and it can satisfy the following conditions: 3 degrees < α2 < 42 degrees. Thereby, the design of the appropriate conical surface angle can greatly increase the feasibility of mass production. Furthermore, the angle between the fourth conical surface and the central axis can satisfy the following conditions: 13 degrees < α2 < 33 degrees. Therefore, by the design of the angle of the conical surface, the roundness of the conical surface of the single lens itself can be prevented from affecting the tightness of the combination between the lenses. Similarly, the angle between the second conical surface and the central axis can also satisfy the following conditions: 13 degrees < α1 < 33 degrees.

In the present invention, the outer diameter of the first lens is D1, the outer diameter of the second lens is D2, and the minimum diameter of the fourth conical surface is ψ4, which satisfies the following condition: D1 Ψ4<D2. Thereby, the aforementioned imaging lens group can be applied to an optical design system of a larger aperture. Further, the outer diameter of the first lens is D1, and the minimum diameter of the fourth conical surface is ψ4, which satisfies the following condition: 0.9 < ψ 4 / D1 < 1.35. Thereby, a plurality of lenses can be made to face the center of the adjacent lenses by the cone, thereby reducing the influence of the conventional assembly tolerance. More specifically, the outer diameter of the first lens and the minimum diameter of the fourth conical surface may satisfy the following condition: 0.94 < ψ 4 / D1 < 1.15. Thereby, the quality difference between the lenses of the same model can be reduced. That is to say, when two or more lenses of the same type are used in the same mobile phone, the imaging lens group that satisfies the foregoing conditions can avoid the influence caused by the difference in quality of the lens.

Further, in the present invention, the outer diameter of the second lens is D2, and the width of the fourth conical surface is w4, which satisfies the following condition: 0.1 < (π^2) × w4 / D2 < 0.45. Thereby, by using the specific design of the fourth conical surface (such as the appropriate width), the feasibility of manufacturing the plastic lens by injection molding can be maintained, and the local thickness of the plastic lens can be prevented from being too high, thereby affecting the manufacturing quality. Further, the width of the fourth conical surface, the minimum diameter of the fourth conical surface, and the maximum diameter of the second conical surface may satisfy the following conditions: 2.2 < (ψ4-ψ2) / (2 × w4) < 6.2. Thereby, a locally narrow secondary injection flow path can be formed as a production countermeasure to compensate for the excessively slow injection speed in the injection molding process, thereby saving production costs. More specifically, the width of the fourth conical surface, the minimum diameter of the fourth conical surface, and the maximum diameter of the second conical surface may satisfy the following condition: 2.8 < (ψ4-ψ2) / (2 × w4) < 5.4. Thereby, the design of the imaging lens unit of the present invention is suitable for severe production conditions requiring mass production in a short period of time.

In the present invention, the second lens and the third lens may be in contact with the third conical surface only to reduce the second lens to bear unnecessary bearing pressing force, and may be applied to the outer diameter difference. Larger imaging lens set. Further, in the present invention, a portion of the third conical surface may not overlap the second lens in a direction perpendicular to and away from one of the central axes. This design of the air gap is preserved to avoid the roundness of the conical surface of the single lens itself affecting the tightness of the combination between the lenses.

The present invention further provides an imaging lens module including the imaging lens group of the foregoing embodiment, wherein the imaging lens group can utilize at least one lens of the imaging lens module or An Opaque member is joined. When the imaging lens assembly is engaged with the lens, its central axis can be aligned with the optical axis of the lens, increasing optical precision and maintaining good image quality. Or, when the imaging lens assembly is bonded to the opaque component, the stability of the overall structure of the imaging lens module can be increased, and the imaging quality of the imaging lens module is not easily affected by the collision of the external environment.

Specifically, the opaque component may be a plastic lens barrel of the imaging lens module, but the invention is not limited thereto. At this time, the imaging lens group can be disposed in the plastic lens barrel along the central axis. More specifically, the plastic lens barrel includes a lens barrel opening, and the minimum inner diameter position of the barrel opening may be the aperture of the imaging lens module. Thereby, it is beneficial to reduce the complexity of the mechanism of the imaging lens module.

In addition, the foregoing imaging lens module can be applied in various aspects to three-dimensional (3D) image capture, digital camera, mobile products, digital tablet, smart television, network monitoring equipment, somatosensory game machine, driving recorder, and reverse developing device. In electronic devices such as wearable products.

Accordingly, the present invention further provides an electronic device including the imaging lens module as described in the preceding paragraph, thereby satisfying the demand for miniaturization and high-standard imaging quality of electronic devices. Preferably, the electronic device 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.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the light of the above-described embodiments, the specific embodiments are described below in detail with reference to the drawings.

 <First Embodiment>  

Please refer to FIG. 1A and FIG. 1B. FIG. 1A is a schematic diagram showing an imaging lens assembly 100 according to a first embodiment of the present invention, and FIG. 1B is a schematic exploded view showing the imaging lens assembly 100 of FIG. 1A. As shown in FIG. 1A, the imaging lens group 100 of the first embodiment includes three plastic lenses and a light shielding film, and the imaging lens group 100 has a central axis z. Specifically, the three plastic lenses are sequentially arranged from the object side to the image side along the central axis z of the imaging lens group 100 as a first lens 110, a second lens 120 and a third lens 130, and the light shielding film 140 is disposed on the first The second lens 120 is between the second lens 130 and the third lens 130. More specifically, the light shielding sheet 140 has a central opening (not labeled in FIG. 1A, please refer to FIG. 1C) and is coaxially arranged with the first lens 110, the second lens 120, and the third lens 130.

As can be seen from FIG. 1B, the first lens 110, the second lens 120, the third lens 130, and the light shielding sheet 140 each include an object side surface and an image side surface opposite to the object side surface. Specifically, the first lens 110 includes the object side surface 111 and the image side surface 112, and the image side surface 112 is disposed opposite to the object side surface 111. Similarly, the second lens 120 includes an object side surface 121 and an image side surface 122. Basically, the third lens 130 and the light shielding sheet 140 have the same configuration, that is, the third lens 130 includes an object side surface 131 and an image side surface 132, and the light shielding sheet 140 includes an object side surface 141 and an image side. Surface 142.

In addition, the object side surface of each plastic lens includes an optical effective area and a lens peripheral area from the central axis z to the lens edge, wherein the optical effective area is used for imaging light to pass through and is aspherical, and the peripheral area of the lens surrounds Optically active area. Furthermore, the image side surface of each plastic lens includes an optical effective area and a lens peripheral area from the central axis z to the lens edge, wherein the optical effective area is used for imaging light to pass through and is aspherical, and the peripheral area of the lens surrounds Optically active area. In detail, the object side surface 111 of the first lens 110 sequentially includes the optical effective area 111a and the lens peripheral area 111b from the central axis z to the lens edge, and the image side surface 112 sequentially includes the optical from the central axis z to the lens edge. The effective area 112a and the lens peripheral area 112b. The object side surface 121 of the second lens 120 sequentially includes the optical effective area 121a and the lens peripheral area 121b from the central axis z to the lens edge, and the image side surface 122 sequentially includes the optical effective area 122a from the central axis z to the lens edge. Lens peripheral area 122b. The object side surface 131 of the third lens 130 sequentially includes the optical effective area 131a and the lens peripheral area 131b from the central axis z to the lens edge, and the image side surface 132 sequentially includes the optical effective area 132a from the central axis z to the lens edge. Lens peripheral area 132b.

Further, the first lens 110 includes a first flat bearing portion 113 and a first conical surface 114, wherein the first flat bearing portion 113 and the first conical surface 114 are both located on the image side of the first lens 110. Surface 112. Specifically, the first straight abutting portion 113 and the first conical surface 114 are both located in the lens peripheral region 112b of the image side surface 112 of the first lens 110, and the first conical surface 114 is composed of the first straight abutting portion 113. Formed toward the central axis z and bent by the image side surface 112 toward the object side surface 111, the first conical surface 114 is closer to the central axis z than the first flat abutment portion 113, but the invention is not limited thereto. .

The second lens 120 includes a second flat bearing portion 123, a second conical surface 124, a fourth flat bearing surface 125 and a fourth conical surface 126. Specifically, the second straight abutting portion 123 and the second conical surface 124 are both located on the object side surface 121 of the second lens 120, and the second conical surface 124 is extended by the second straight abutting portion 123 toward the central axis z. It is formed to be bent outwardly toward the object side surface 121 such that the second conical surface 124 is closer to the central axis z than the second flat abutting portion 123. Furthermore, the fourth flat bearing portion 125 and the fourth conical surface 126 are both located on the image side surface 122 of the second lens 120, and the fourth conical surface 126 is directed away from the central axis by the fourth flat bearing portion 125. The direction extends and is formed by bending outwardly toward the image side surface 122 such that the fourth conical surface 126 is away from the central axis z than the fourth flat abutment portion 125.

The third lens 130 includes a third straight abutting portion 133 and a third conical surface 134 , wherein the third straight abutting portion 133 and the third conical surface 134 are both located on the object side surface 131 of the third lens 130 , and The third conical surface 134 is formed by the third straight abutting portion 133 extending away from the central axis z and bent outwardly toward the image side surface 132, so that the third conical surface 134 is closer to the third straight abutting portion. 133 away from the central axis z.

At this time, as shown in FIG. 1A, the first straight abutting portion 113 overlaps with the second straight abutting portion 123, and the first conical surface 114 is in contact with the second conical surface 124, and the first lens 110 and the first lens 110 The first axial connection structure (not otherwise labeled) is formed between the two lenses 120 to assemble the first lens 110 and the second lens 120 and to form the central axis z of the lens group 100. Similarly, as shown in FIG. 1A, the fourth conical surface 126 is in contact with the third conical surface 134, and the object side surface 141 of the light shielding sheet 140 overlaps with the fourth flat bearing portion 125, and the image side surface 142 of the light shielding sheet 140. And a third axial connecting portion 133 is overlapped, and a second axial connecting structure (not otherwise labeled) is formed between the second lens 120, the light shielding sheet 140 and the third lens 130 to assemble the second lens 120 and The third lens 130 is and is centered on the central axis z of the lens group 100. It should be noted that, as can be seen from the partial enlarged view in FIG. 1A, a portion of the third conical surface 134 does not overlap the second lens 120 in a direction perpendicular and away from the central axis z, that is, in the second axial connection. In the structure, the edge of the second lens 120 and the edge of the third lens 130 retain an air gap in the direction of the vertical central axis z, so that the roundness of the conical surface of the single lens itself can be prevented from affecting the tightness of the combination between the lenses.

Furthermore, as shown in FIG. 1B, the angle between the second conical surface 124 and the central axis z is α1, and the angle between the first conical surface 114 and the central axis z (ie, α3) is set to be mutually assembled. By designing the angle of the conical surface to avoid the roundness of the conical surface of the single lens itself, the adhesion of the combination between the lenses is affected, thereby increasing the feasibility of mass production. Similarly, the angle between the fourth conical surface 126 and the central axis z is α2, and it is disposed corresponding to the angle between the third conical surface 134 and the central axis z (ie, α4) to be mutually assembled.

In addition, the imaging lens assembly 100 may further include other optical components between the first lens 110, the second lens 120 and the third lens 130, or the object side surface 111 of the first lens 110 and the image side surface 132 of the third lens 130. . In general, the optical element may be, but is not limited to, a lens, an imaging compensating element, a light shielding sheet, a spacer ring or a fixing ring. The first lens 110 and the first flat bearing portion 113 and the first conical surface 114 can be integrally formed and manufactured by an injection molding process, and the second lens 120 and the third lens 130 are similar, but the present invention does not This is limited.

Next, please refer to FIG. 1C and FIG. 1D. FIG. 1C is a plan view showing the light shielding sheet 140 in the imaging lens unit 100 of FIG. 1A, and FIG. 1D is a view showing the light shielding sheet in the imaging lens unit 100 of FIG. 1C. A schematic cross-sectional view of 140 along section line 1d-1d. As can be seen from FIG. 1C and FIG. 1D, the light shielding sheet 140 has a central axis z, and the light shielding sheet 140 includes an outer side surface 143 and a central opening 144 in addition to the object side surface 141 and the image side surface 142. The central axis z passes through the central opening 144, and the outer side surface 143 is used to connect the object side surface 141 and the image side surface 142 of the light shielding film 140 and is coaxial with the central opening 144, and the inner surface 144a of the central opening 144 surrounds the central opening. 144.

In the first embodiment, the inner surface 144a of the central opening 144 of the light shielding sheet 140 is not circular in its entirety. Specifically, as can be seen from FIG. 1C, the light shielding sheet 140 has a plurality of protruding structures (not otherwise labeled) extending from the central opening 144 toward the central axis z, such that the inner surface 144a of the central opening 144 is substantially A polygon is placed on it. Thereby, the image sticking around the image can be effectively reduced and the stray light reflection of the light shielding sheet can be reduced. More specifically, in the embodiment, the visor and the plurality of protruding structures extending from the central opening may be integrally formed, but the invention is not limited thereto.

Further, as can be seen from Fig. 1D, the diameter of the central opening 144 of the light shielding sheet 140 at the object side surface 141 is smaller than the diameter of the central opening 144 at the image side surface 142. Further, the inner surface 144a of the central opening 144 has an included angle θ with the central axis z, and the included angle θ is specifically 40 degrees.

In the imaging lens group 100 of the first embodiment of the present invention, the outer diameter of the first lens 110 is D1, the outer diameter of the second lens 120 is D2, the outer diameter of the third lens 130 is D3, and the outer diameter of the light shielding sheet 140. The diameter of the face 143 is D, the maximum diameter of the second conical surface 124 is ψ2, the minimum diameter of the fourth conical surface 126 is ψ4, the minimum inner diameter of the central opening 144 of the visor 140 is ψi, and the fourth conical surface 126 The width is w4 (specifically, w4 is the width of the fourth conical surface 126 parallel to the central axis z), the angle between the second conical surface 124 and the central axis z is α1, and the angle between the fourth conical surface 126 and the central axis z Is α2. Table 1 further details the parameters D1, D2, D3, D, ψ2, ψ4, ψi, w4, α1, α2, (ψ4-ψ2)/2, |ψ4-D|/2, (π^2)×(( Ψ4-ψ2)/D), ψi/D, ψ4/D1, (π^2)×w4/D2, and (ψ4-ψ2)/(2×w4) values.

 <Second embodiment>  

Referring to FIGS. 2A and 2B, FIG. 2A is a schematic view showing an imaging lens group 200 according to a second embodiment of the present invention, and FIG. 2B is a schematic exploded view showing the imaging lens group 200 of FIG. 2A. As shown in FIG. 2A, the imaging lens group 200 of the second embodiment includes three plastic lenses and a light shielding sheet, and the imaging lens group 200 has a central axis z. Specifically, the three plastic lenses are sequentially along the central axis z of the imaging lens group 200 from the object side to the image side, and are a first lens 210, a second lens 220, and a third lens 230, and the light shielding film 240 is disposed on the first lens. The second lens 220 is between the second lens 230 and the third lens 230. More specifically, the light shielding sheet 240 has a central opening (not labeled in FIG. 2A, please refer to FIG. 2C) and is coaxially arranged with the first lens 210, the second lens 220, and the third lens 230.

As can be seen from FIG. 2B, the first lens 210, the second lens 220, the third lens 230, and the light shielding sheet 240 each include an object side surface and an image side surface disposed opposite to the object side surface. Specifically, the first lens 210 includes an object side surface 211 and an image side surface 212, and the image side surface 212 is disposed opposite to the object side surface 211. Similarly, the second lens 220 includes an object side surface 221 and an image side surface 222. Basically, the third lens 230 and the light shielding sheet 240 have the same configuration, that is, the third lens 230 includes an object side surface 231 and an image side surface 232, and the light shielding sheet 240 includes an object side surface 241 and an image side. Surface 242.

In detail, the object side surface 211 of the first lens 210 sequentially includes the optical effective area 211a and the lens peripheral area 211b from the central axis z to the lens edge, and the image side surface 212 sequentially includes the optical from the central axis z to the lens edge. The effective area 212a and the lens peripheral area 212b. The object side surface 221 of the second lens 220 sequentially includes the optical effective area 221a and the lens peripheral area 221b from the central axis z to the lens edge, and the image side surface 222 sequentially includes the optical effective area 222a from the central axis z to the lens edge. Lens peripheral area 222b. The object side surface 231 of the third lens 230 sequentially includes the optical effective area 231a and the lens peripheral area 231b from the central axis z to the lens edge, and the image side surface 232 sequentially includes the optical effective area 232a from the central axis z to the lens edge. Lens peripheral area 232b.

In the second embodiment, the first lens 210 includes a first flat bearing portion 213 and a first conical surface 214, wherein the first flat bearing portion 213 and the first conical surface 214 are both located at the first lens 210. The image side surface 212, and the first conical surface 214 is closer to the central axis z than the first flat bearing portion 213, but the invention is not limited thereto. The second lens 220 includes a second flat bearing portion 223, a second conical surface 224, a fourth flat bearing surface 225 and a fourth conical surface 226. Specifically, the second straight abutting portion 223 and the second conical surface 224 are both located on the object side surface 221 of the second lens 220, and the second conical surface 224 is closer to the central axis z than the second flat bearing portion 223. Moreover, the fourth flat bearing portion 225 and the fourth conical surface 226 are both located on the image side surface 222 of the second lens 220, and the fourth conical surface 226 is away from the central axis z than the fourth flat bearing portion 225. The third lens 230 includes a third flat bearing portion 233 and a third conical surface 234, wherein the third flat bearing portion 233 and the third conical surface 234 are both located on the object side surface 231 of the third lens 230, and The third conical surface 234 is away from the central axis z than the third flat abutment portion 233.

At this time, as shown in FIG. 2A, the first straight abutting portion 213 overlaps with the second straight abutting portion 223, and the first conical surface 214 is in contact with the second conical surface 224 to assemble the first lens 210 and the first The second lens 220 is and is centered on the central axis z of the lens group 200. Similarly, as shown in FIG. 2A, the fourth conical surface 226 is in contact with the third conical surface 234, and the object side surface 241 of the light shielding sheet 240 overlaps with the fourth flat bearing portion 225, and the image side surface 242 of the light shielding sheet 240. The third flat bearing portion 233 is overlapped to assemble the second lens 220 and the third lens 230 to the central axis z of the imaging lens group 200. It should be noted that, as can be seen from the partial enlarged view in FIG. 2A, a portion of the third conical surface 234 does not overlap the second lens 220 in a direction perpendicular and away from the central axis z, that is, in the second lens 220. The edge and the edge of the third lens 230 retain an air gap in the direction of the vertical central axis z, so that the roundness of the conical surface of the single lens itself can be prevented from affecting the tightness of the combination between the lenses.

Further, as shown in FIG. 2B, the angle between the second conical surface 224 and the central axis z is α1, and is disposed so as to be at an angle corresponding to the angle between the first conical surface 214 and the central axis z (ie, α3). Similarly, the angle between the fourth conical surface 226 and the central axis z is α2, and it is disposed corresponding to the angle between the third conical surface 234 and the central axis z (ie, α4) to be mutually assembled.

Next, please refer to FIG. 2C and FIG. 2D, FIG. 2C is a plan view showing the light shielding sheet 240 in the imaging lens group 200 of FIG. 2A, and FIG. 2D is a light shielding sheet in the imaging lens group 200 of FIG. 2C. A schematic cross-sectional view of 240 along section line 2d-2d. As can be seen from FIGS. 2C and 2D, the light shielding sheet 240 has a central axis z, and the light shielding sheet 240 includes an outer side surface 243 and a central opening 244 in addition to the object side surface 241 and the image side surface 242. The central axis z passes through the central opening 244, and the outer side surface 243 is used to connect the object side surface 241 and the image side surface 242 of the light shielding sheet 240 and is coaxial with the central opening 244, and the inner surface 244a of the central opening 244 surrounds the central opening. 244. Specifically, the inner surface 244a of the central opening 244 of the light shielding sheet 240 has a circular shape as a whole. More specifically, the diameter of the central opening 244 of the visor 240 at its object side surface 241 is substantially equal to the diameter of the central opening 244 at the image side surface 242.

In addition to the above structural features, the imaging lens group 200 may be between the first lens 210, the second lens 220 and the third lens 230, or the object side surface 211 of the first lens 210 and the image side surface 232 of the third lens 230. Contains other optical components. In general, the optical element may be, but is not limited to, a lens, an imaging compensating element, a light shielding sheet, a spacer ring or a fixing ring.

Referring to Table 2 below, the parameters D1, D2, D3, D, ψ2, ψ4, ψi, w4, α1, α2, (ψ4-ψ2)/ in the imaging lens group 200 of the second embodiment of the present invention are listed. 2,|ψ4-D|/2, (π^2)×((ψ4-ψ2)/D), ψi/D, ψ4/D1, (π^2)×w4/D2, and (ψ4-ψ2)/ The value of (2×w4) is the same as that of the light-shielding sheet 100 of the first embodiment and is shown in FIG. 2B and FIG. 2D, and details are not described herein again.

 <Third embodiment>  

Please refer to FIG. 3A and FIG. 3B. FIG. 3A is a schematic diagram of an imaging lens assembly 300 according to a third embodiment of the present invention, and FIG. 3B is a schematic exploded view of the imaging lens assembly 300 of FIG. 3A. As shown in Fig. 3A, the imaging lens unit 300 of the third embodiment includes three plastic lenses and a light shielding sheet, and the imaging lens group 300 has a central axis z. Specifically, the three plastic lenses are sequentially a first lens 310, a second lens 320 and a third lens 330 from the object side to the image side along the central axis z of the imaging lens group 300, and the light shielding sheet 340 is disposed on the first The second lens 320 is between the third lens 330 and the third lens 330. More specifically, the light shielding sheet 340 has a central opening (not labeled in FIG. 3A, please refer to FIG. 3C) and is coaxially arranged with the first lens 310, the second lens 320, and the third lens 330.

As can be seen from FIG. 3B, the first lens 310, the second lens 320, the third lens 330, and the light shielding sheet 340 each include an object side surface and an image side surface disposed opposite to the object side surface. Specifically, the first lens 310 includes an object side surface 311 and an image side surface 312, and the image side surface 312 is disposed opposite to the object side surface 311. Similarly, the second lens 320 includes an object side surface 321 and an image side surface 322. Basically, the third lens 330 and the light shielding sheet 340 have the same configuration, that is, the third lens 330 includes an object side surface 331 and an image side surface 332, and the light shielding sheet 340 includes an object side surface 341 and an image side. Surface 342.

In detail, the object side surface 311 of the first lens 310 sequentially includes the optical effective area 311a and the lens peripheral area 311b from the central axis z to the lens edge, and the image side surface 312 sequentially includes the optical from the central axis z to the lens edge. The effective area 312a and the lens peripheral area 312b. The object side surface 321 of the second lens 320 sequentially includes the optical effective area 321a and the lens peripheral area 321b from the central axis z to the lens edge, and the image side surface 322 sequentially includes the optical effective area 322a from the central axis z to the lens edge. Lens peripheral region 322b. The object side surface 331 of the third lens 330 sequentially includes the optical effective area 331a and the lens peripheral area 331b from the central axis z to the lens edge, and the image side surface 332 sequentially includes the optical effective area 332a from the central axis z to the lens edge. Lens peripheral zone 332b.

In the third embodiment, the first lens 310 includes a first flat bearing portion 313 and a first conical surface 314 , wherein the first flat bearing portion 313 and the first conical surface 314 are both located in the first lens 310 . The image side surface 312, and the first conical surface 314 is closer to the central axis z than the first flat bearing portion 313, but the invention is not limited thereto. The second lens 320 includes a second flat bearing portion 323, a second conical surface 324, a fourth flat bearing surface 325 and a fourth conical surface 326. Specifically, the second flat bearing portion 323 and the second conical surface 324 are both located on the object side surface 321 of the second lens 320, and the second conical surface 324 is closer to the central axis z than the second flat bearing portion 323. Moreover, the fourth flat bearing portion 325 and the fourth conical surface 326 are both located on the image side surface 322 of the second lens 320, and the fourth conical surface 326 is away from the central axis z than the fourth flat bearing portion 325. The third lens 330 includes a third straight abutting portion 333 and a third conical surface 334 , wherein the third flat abutting portion 333 and the third conical surface 334 are both located on the object side surface 331 of the third lens 330 , and The third conical surface 334 is closer to the central axis z than the third flat abutment portion 333.

At this time, as shown in FIG. 3A, the first straight abutting portion 313 overlaps with the second straight abutting portion 323, and the first conical surface 314 is in contact with the second conical surface 324 to assemble the first lens 310 and the first The second lens 320 is opposite to the central axis z of the imaging lens group 300. Similarly, as shown in FIG. 3A, the fourth conical surface 326 is in contact with the third conical surface 334, and the object side surface 341 of the light shielding sheet 340 overlaps with the fourth flat bearing portion 325, and the image side surface 342 of the light shielding sheet 340. The third flat bearing portion 333 is overlapped to assemble the second lens 320 and the third lens 330 and is centered on the central axis z of the lens group 300. It should be noted that, as can be seen from the partial enlarged view in FIG. 3A, a portion of the third conical surface 334 does not overlap the second lens 320 in a direction perpendicular and away from the central axis z, that is, in the second lens 320. The edge and the edge of the third lens 330 retain an air gap in the direction of the vertical central axis z, so that the roundness of the conical surface of the single lens itself can be prevented from affecting the tightness of the combination between the lenses.

Furthermore, as shown in FIG. 3B, the angle between the second conical surface 324 and the central axis z is α1, and it is disposed corresponding to the angle between the first conical surface 314 and the central axis z (ie, α3) and can be assembled to each other. Similarly, the angle between the fourth conical surface 326 and the central axis z is α2, and it is disposed corresponding to the angle between the third conical surface 334 and the central axis z (ie, α4) to be mutually assembled.

Next, please refer to FIG. 3C. FIG. 3C is a cross-sectional view showing the light shielding sheet 340 in the imaging lens group 300 of FIG. 3A. In the third embodiment, the design of the light shielding sheet 340 is substantially the same as that of the light shielding sheet 200 of the second embodiment. Specifically, as shown in FIG. 3C, the light shielding sheet 340 has a central axis z, and the light shielding sheet 340 includes an outer side surface 343 of the connector side surface 341 and the image side surface 342 in addition to the object side surface 341 and the image side surface 342. And a central opening 344. The central axis z passes through the central opening 344, the outer side 343 is coaxial with the central opening 344, and the inner surface 344a of the central opening 344 surrounds the central opening 344. More specifically, the inner surface 344a of the central opening 344 of the light shielding sheet 340 has a circular shape as a whole, and the diameter of the central opening 344 of the light shielding sheet 340 at the object side surface 341 is substantially equal to the central opening 344 on the image side. The diameter at surface 342.

In addition to the above structural features, the imaging lens group 300 may be between the first lens 310, the second lens 320 and the third lens 330, or the object side surface 311 of the first lens 310 and the image side surface 332 of the third lens 330. Contains other optical components. In general, the optical element may be, but is not limited to, a lens, an imaging compensating element, a light shielding sheet, a spacer ring or a fixing ring.

Referring to Table 3 below, the parameters D1, D2, D3, D, ψ2, ψ4, ψi, w4, α1, α2, (ψ4-ψ2)/ in the imaging lens group 300 of the third embodiment of the present invention are listed. 2,|ψ4-D|/2, (π^2)×((ψ4-ψ2)/D), ψi/D, ψ4/D1, (π^2)×w4/D2, and (ψ4-ψ2)/ The values of (2×w4) are the same as those of the light shielding sheet 100 of the first embodiment and are shown in FIGS. 3B and 3C, and are not described herein again.

 <Fourth embodiment>  

Please refer to FIG. 4A to FIG. 4C, FIG. 4A is a schematic diagram of an imaging lens group 400 according to a fourth embodiment of the present invention, and FIG. 4B is a schematic diagram showing an explosion of the imaging lens group 400 of FIG. 4A, and 4C is a schematic cross-sectional view showing the light shielding sheet 440 in the imaging lens group of FIG. 4A. First, as shown in FIG. 4A, the imaging lens group 400 of the fourth embodiment includes three plastic lenses and a light shielding sheet, and the imaging lens group 400 has a central axis z. Specifically, the three plastic lenses are sequentially a first lens 410, a second lens 420, and a third lens 430 from the object side to the image side along the central axis z of the imaging lens group 400, and the light shielding sheet 440 is disposed on the first The second lens 420 is interposed between the third lens 420 and the third lens More specifically, the light shielding sheet 440 has a central opening 444 (please refer to FIG. 4C) and is coaxially arranged with the first lens 410, the second lens 420, and the third lens 430.

As can be seen from FIG. 4B, the first lens 410 includes the object side surface 411 and the image side surface 412, and the image side surface 412 is disposed opposite to the object side surface 411. Similarly, the second lens 420 includes an object side surface 421 and an image side surface 422. Basically, the third lens 430 and the light shielding sheet 440 have the same configuration, that is, the third lens 430 includes an object side surface 431 and an image side surface 432, and the light shielding sheet 440 includes an object side surface 441 and an image side. Surface 442.

In detail, the object side surface 411 of the first lens 410 sequentially includes the optical effective area 411a and the lens peripheral area 411b from the central axis z to the lens edge, and the image side surface 412 sequentially includes the optical from the central axis z to the lens edge. The effective area 412a and the lens peripheral area 412b. The object side surface 421 of the second lens 420 sequentially includes the optical effective area 421a and the lens peripheral area 421b from the central axis z to the lens edge, and the image side surface 422 sequentially includes the optical effective area 422a from the central axis z to the lens edge. Lens peripheral area 422b. The object side surface 431 of the third lens 430 sequentially includes the optical effective area 431a and the lens peripheral area 431b from the central axis z to the lens edge, and the image side surface 432 sequentially includes the optical effective area 432a from the central axis z to the lens edge. Lens peripheral zone 432b.

In the fourth embodiment, the first lens 410 includes a first flat bearing portion 413 and a first conical surface 414, wherein the first flat bearing portion 413 and the first conical surface 414 are both located in the first lens 410. The image side surface 412, and the first conical surface 414 is closer to the central axis z than the first flat bearing portion 413, but the invention is not limited thereto. The second lens 420 includes a second flat bearing portion 423, a second conical surface 424, a fourth flat bearing surface 425 and a fourth conical surface 426. Specifically, the second flat bearing portion 423 and the second conical surface 424 are both located on the object side surface 421 of the second lens 420, and the second conical surface 424 is closer to the central axis z than the second flat bearing portion 423. Moreover, the fourth flat bearing portion 425 and the fourth conical surface 426 are both located on the image side surface 422 of the second lens 420, and the fourth conical surface 426 is away from the central axis z than the fourth flat bearing portion 425. The third lens 430 includes a third straight abutting portion 433 and a third conical surface 434, wherein the third straight abutting portion 433 and the third conical surface 434 are both located on the object side surface 431 of the third lens 430, and The third conical surface 434 is away from the central axis z than the third flat abutment portion 433.

At this time, as shown in FIG. 4A, the first straight abutting portion 413 overlaps with the second straight abutting portion 423, and the first conical surface 414 is in contact with the second conical surface 424 to assemble the first lens 410 and the first The second lens 420 is opposite to the central axis z of the imaging lens group 400. Similarly, as shown in FIG. 4A, the fourth conical surface 426 is in contact with the third conical surface 434, and the object side surface 441 of the light shielding sheet 440 overlaps with the fourth flat bearing portion 425, and the image side surface 442 of the light shielding sheet 440. The third flat bearing portion 433 is overlapped to assemble the second lens 420 and the third lens 430 and is centered on the central axis z of the imaging lens group 400. It should be noted that, as can be seen from the partial enlarged view in FIG. 4A, a portion of the third conical surface 434 does not overlap the second lens 420 in a direction perpendicular and away from the central axis z, that is, in the second lens 420. The edge and the edge of the third lens 430 retain an air gap in the direction of the vertical central axis z, so that the roundness of the conical surface of the single lens itself can be prevented from affecting the tightness of the combination between the lenses.

Furthermore, as shown in FIG. 4B, the angle between the second conical surface 424 and the central axis z is α1, and it is disposed so as to be interposed with the angle between the first conical surface 414 and the central axis z (ie, α3). Similarly, the angle between the fourth conical surface 426 and the central axis z is α2, and it is disposed corresponding to the angle between the third conical surface 434 and the central axis z (ie, α4) to be mutually assembled.

Finally, as shown in FIG. 4C, the light shielding sheet 440 has a central axis z, and the light shielding sheet 440 includes, in addition to the object side surface 441 and the image side surface 442, an outer side surface 443 of the connector side surface 441 and the image side surface 442, and A central opening 444. The central axis z passes through the central opening 444, the outer side 443 is coaxial with the central opening 444, and the inner surface 444a of the central opening 444 surrounds the central opening 444. More specifically, the inner surface 444a of the central opening 444 of the light shielding sheet 440 has a circular shape as a whole, and the diameter of the central opening 444 of the light shielding sheet 440 at the object side surface 441 is substantially equal to the central opening 444 on the image side. The diameter at surface 442.

Referring to Table 4 below, the parameters D1, D2, D3, D, ψ2, ψ4, ψi, w4, α1, α2, (ψ4-ψ2)/ in the imaging lens group 400 of the fourth embodiment of the present invention are listed. 2,|ψ4-D|/2, (π^2)×((ψ4-ψ2)/D), ψi/D, ψ4/D1, (π^2)×w4/D2, and (ψ4-ψ2)/ The values of (2×w4) are the same as those of the light shielding sheet 100 of the first embodiment and are shown in FIGS. 4B and 4C, and are not described herein again.

 <Fifth Embodiment>  

5A to 5C, FIG. 5A is a schematic view showing an imaging lens group 500 according to a fifth embodiment of the present invention, and FIG. 5B is a schematic diagram showing an explosion of the imaging lens group 500 of FIG. 5A, and 5C is a schematic cross-sectional view showing the light shielding sheet 540 in the imaging lens group of FIG. 5A. First, as shown in FIG. 5A, the imaging lens group 500 of the fifth embodiment includes three plastic lenses and a light shielding sheet, and the imaging lens group 500 has a central axis z. Specifically, the three plastic lenses are sequentially a first lens 510, a second lens 520, and a third lens 530 from the object side to the image side along the central axis z of the imaging lens group 500, and the light shielding sheet 540 is disposed on the first The second lens 520 is interposed between the third lens 520 and the third lens More specifically, the light shielding sheet 540 has a central opening 544 (refer to FIG. 5C) and is coaxially arranged with the first lens 510, the second lens 520, and the third lens 530.

As can be seen from Fig. 5B, the first lens 510 includes the object side surface 511 and the image side surface 512, and the image side surface 512 is disposed opposite to the object side surface 511. Similarly, the second lens 520 includes an object side surface 521 and an image side surface 522. Basically, the third lens 530 and the light shielding sheet 540 have the same configuration, that is, the third lens 530 includes an object side surface 531 and an image side surface 532, and the light shielding sheet 540 includes an object side surface 541 and an image side. Surface 542.

In detail, the object side surface 511 of the first lens 510 sequentially includes the optical effective area 511a and the lens peripheral area 511b from the central axis z to the lens edge, and the image side surface 512 sequentially includes the optical from the central axis z to the lens edge. The effective area 512a and the lens peripheral area 512b. The object side surface 521 of the second lens 520 sequentially includes the optical effective area 521a and the lens peripheral area 521b from the central axis z to the lens edge, and the image side surface 522 sequentially includes the optical effective area 522a from the central axis z to the lens edge. Lens peripheral area 522b. The object side surface 531 of the third lens 530 sequentially includes the optical effective area 531a and the lens peripheral area 531b from the central axis z to the lens edge, and the image side surface 532 sequentially includes the optical effective area 532a from the central axis z to the lens edge. Lens peripheral zone 532b.

In the fifth embodiment, the first lens 510 includes a first straight abutting portion 513 and a first conical surface 514, wherein the first straight abutting portion 513 and the first conical surface 514 are both located at the first lens 510. The image side surface 512, and the first conical surface 514 is closer to the central axis z than the first flat bearing portion 513, but the invention is not limited thereto. The second lens 520 includes a second flat bearing portion 523 , a second conical surface 524 , a fourth flat bearing surface 525 and a fourth conical surface 526 . Specifically, the second straight abutting portion 523 and the second conical surface 524 are both located on the object side surface 521 of the second lens 520, and the second conical surface 524 is closer to the central axis z than the second flat bearing portion 523. Furthermore, the fourth flat bearing portion 525 and the fourth conical surface 526 are both located on the image side surface 522 of the second lens 520, and the fourth conical surface 526 is away from the central axis z than the fourth flat bearing portion 525. The third lens 530 includes a third flat bearing portion 533 and a third conical surface 534, wherein the third flat bearing portion 533 and the third conical surface 534 are both located on the object side surface 531 of the third lens 530, and The third conical surface 534 is away from the central axis z than the third flat abutment 533.

At this time, as shown in FIG. 5A, the first straight abutting portion 513 overlaps with the second straight abutting portion 523, and the first conical surface 514 is in contact with the second conical surface 524 to assemble the first lens 510 and the first The second lens 520 is opposite to the central axis z of the imaging lens group 500. Similarly, as shown in FIG. 5A, the fourth conical surface 526 is in contact with the third conical surface 534, and the object side surface 541 of the light shielding sheet 540 overlaps with the fourth flat bearing portion 525, and the image side surface 542 of the light shielding sheet 540. The third flat bearing portion 533 is overlapped to assemble the second lens 520 and the third lens 530 and to the central axis z of the imaging lens group 500. It should be noted that, as can be seen from the partial enlarged view in FIG. 5A, a portion of the third conical surface 534 does not overlap the second lens 520 in a direction perpendicular and away from the central axis z, that is, in the second lens 520. The edge and the edge of the third lens 530 retain an air gap in the direction of the vertical central axis z, so that the roundness of the conical surface of the single lens itself can be prevented from affecting the tightness of the combination between the lenses.

Further, as shown in FIG. 5B, the angle between the second conical surface 524 and the central axis z is α1, and is disposed so as to be at an angle corresponding to the angle between the first conical surface 514 and the central axis z (ie, α3). Similarly, the angle between the fourth conical surface 526 and the central axis z is α2, and it is disposed corresponding to the angle between the third conical surface 534 and the central axis z (ie, α4) to be mutually assembled.

Finally, as shown in FIG. 5C, the light shielding sheet 540 has a central axis z, and the light shielding sheet 540 includes an outer side surface 543 of the connector side surface 541 and the image side surface 542 in addition to the object side surface 541 and the image side surface 542, and A central opening 544. The central axis z passes through the central opening 544, the outer side 543 is coaxial with the central opening 544, and the inner surface 544a of the central opening 544 surrounds the central opening 444. More specifically, the inner surface 544a of the central opening 544 of the light shielding sheet 540 has a circular shape as a whole, and the diameter of the central opening 544 of the light shielding sheet 540 at the object side surface 541 is substantially equal to the central opening 544 on the image side. The diameter at surface 542.

Referring to Table 5 below, the parameters D1, D2, D3, D, ψ2, ψ4, ψi, w4, α1, α2, (ψ4-ψ2)/ in the imaging lens group 500 of the fifth embodiment of the present invention are listed. 2,|ψ4-D|/2, (π^2)×((ψ4-ψ2)/D), ψi/D, ψ4/D1, (π^2)×w4/D2, and (ψ4-ψ2)/ The values of (2×w4) are the same as those of the light shielding sheet 100 of the first embodiment and are shown in FIGS. 5B and 5C, and are not described herein again.

 <Sixth embodiment>  

Please refer to FIG. 6. FIG. 6 is a cross-sectional view showing the imaging lens module 1000 according to the sixth embodiment of the present invention. As can be seen from FIG. 6, the imaging lens module 1000 includes a plastic lens barrel 1100 and an optical lens set 1200 disposed in the plastic lens barrel 1100. The optical lens set 1200 of the sixth embodiment includes the imaging of the first embodiment of the present invention. Lens group 100.

Further, the plastic lens barrel 1100 includes a lens barrel opening 1110 having a minimum inner diameter position 1110a. Thereby, it helps to suppress stray light, thereby improving the imaging quality of the imaging lens module 1000. Moreover, the minimum inner diameter position 1110a of the lens barrel opening 1110 can be the aperture of the imaging lens module 1000. Thereby, it is advantageous to reduce the mechanism complexity of the imaging lens module 1000.

The imaging lens module 1000 further includes an object side end 1300, an image side end 1400, and an imaging surface 1500, wherein the object side end 1300 faces an object to be imaged (not shown), and the image side end 1400 faces the imaging surface 1500. .

The optical lens group 1200 is disposed in the plastic lens barrel 1100 along the optical axis of the imaging lens module 1000 (ie, coaxial with the central axis z of the imaging lens group 100), and the lens 1210 is sequentially included from the object side end 1300 to the image side end 1400. The lens 1220, the first lens 110 of the first embodiment, the second lens 120 of the first embodiment, the third lens 130 of the first embodiment, and the lens 1230. In addition, the optical lens set 1200 further includes the light shielding film 140 of the first embodiment, and is disposed between the second lens 120 and the third lens 130. Thereby, it is more helpful to suppress stray light, thereby improving the imaging quality of the imaging lens module 1000.

The structural features of the first lens 110, the second lens 120, the third lens 130, and the light shielding sheet 140 in the imaging lens group 100 of the first embodiment can be referred to FIG. 1A again. In short, the first lens 110 includes a first straight abutting portion 113 and a first conical surface 114, wherein the first flat abutting portion 113 and the first conical surface 114 are both located on the image side surface 112 of the first lens 110. And the first conical surface 114 is closer to the central axis z than the first flat abutting portion 113. The second lens 120 includes a second flat bearing portion 123, a second conical surface 124, a fourth flat bearing surface 125 and a fourth conical surface 126, wherein the second flat bearing portion 123 and the second conical surface 124 Both are located on the object side surface 121 of the second lens 120, and the second conical surface 124 is closer to the central axis z than the second flat abutting portion 123. Moreover, the fourth flat bearing portion 125 and the fourth conical surface 126 are both located on the image side surface 122 of the second lens 120, and the fourth conical surface 126 is away from the central axis z than the fourth flat bearing portion 125. The third lens 130 includes a third straight abutting portion 133 and a third conical surface 134, wherein the third straight abutting portion 133 and the third conical surface 134 are both located on the object side surface 131 of the third lens 130, and the third The conical surface 134 is closer to the central axis z than the third flat abutment portion 133.

Therefore, the first conical surface 114 is in contact with the second conical surface 124 by the first flat abutting portion 113 and the second conical surface portion 123 to assemble the first lens 110 and the second lens 120. At the same time, by the fourth conical surface 126 contacting the third conical surface 134, the object side surface 141 of the light shielding sheet 140 overlaps with the fourth flat bearing portion 125, and the image side surface 142 of the light shielding sheet 140 and the third flat bearing The bases 133 are overlapped to assemble the second lens 120 and the third lens 130. Next, as shown in FIG. 6, in the sixth embodiment, the imaging lens group 100 further utilizes the structural design on the object side surface 111 of the first lens 110 and the image side surface 132 of the third lens 130, respectively, with the lens 1220 and the lens. The 1230 is assembled to each other and is centered on the central axis z of the lens group. For other details of the imaging lens set 100 of the first embodiment, please refer to the related content of the foregoing first embodiment, and details are not described herein again.

In addition, in the sixth embodiment of the present invention, the lens 1210, the lens 1220, and the lens 1230 of the optical lens set 1200 may be made of plastic or glass. When the lens is made of plastic, it can effectively reduce the production cost. In addition, when the lens is made of glass, the degree of freedom of the optical lens set 1200 refractive power configuration can be increased. Furthermore, the optical lens set 1200 may further include a plurality of other optical components (not labeled), such as a spacer ring, a light shielding film, and the like, which are not described herein again.

 <Seventh embodiment>  

Please refer to FIG. 7. FIG. 7 is a cross-sectional view showing the imaging lens module 2000 according to the seventh embodiment of the present invention. As can be seen from FIG. 7, the imaging lens module 2000 includes a plastic lens barrel 2100 and an optical lens group 2200 disposed in the plastic lens barrel 2100. The optical lens group 2200 of the seventh embodiment includes the imaging method of the second embodiment of the present invention. Lens group 200.

Further, the plastic lens barrel 2100 includes a lens barrel opening 2110 having a minimum inner diameter position 2110a. Thereby, it helps to suppress stray light, thereby improving the imaging quality of the imaging lens module 2000. Moreover, the minimum inner diameter position 2110a of the lens barrel opening 2110 can be the aperture of the imaging lens module 2000. Thereby, it is advantageous to reduce the mechanism complexity of the imaging lens module 2000.

The imaging lens module 2000 further includes an object side end 2300, an image side end 2400, and an imaging surface 2500, wherein the object side end 2300 faces an object to be imaged (not shown), and the image side end 2400 faces the imaging surface 2500. .

The optical lens group 2200 is disposed in the plastic lens barrel 2100 along the optical axis of the imaging lens module 2000 (ie, coaxial with the central axis z of the imaging lens group 200), and the lens 2210 is sequentially included from the object side end 2300 to the image side end 2400. The lens 2220, the first lens 210 of the second embodiment, the second lens 220 of the second embodiment, the third lens 230 of the second embodiment, and the lens 2230. In addition, the optical lens set 2200 further includes the light shielding sheet 240 of the second embodiment, and is disposed between the second lens 220 and the third lens 230. Thereby, it is more helpful to suppress stray light, thereby improving the imaging quality of the imaging lens module 2000.

Regarding the structural features of the first lens 210, the second lens 220, the third lens 230, and the light shielding sheet 240 in the imaging lens group 200 of the second embodiment, reference may again be made to FIG. 2A. In short, the first lens 210 includes a first straight bearing portion 213 and a first conical surface 214, wherein the first flat bearing portion 213 and the first conical surface 214 are both located on the image side surface 212 of the first lens 210. And the first conical surface 214 is closer to the central axis z than the first flat bearing portion 213. The second lens 220 includes a second straight bearing portion 223 , a second conical surface 224 , a fourth flat bearing surface 225 and a fourth conical surface 226 , wherein the second flat bearing portion 223 and the second conical surface 224 Both are located on the object side surface 221 of the second lens 220, and the second conical surface 224 is closer to the central axis z than the second flat bearing portion 223. Moreover, the fourth flat bearing portion 225 and the fourth conical surface 226 are both located on the image side surface 222 of the second lens 220, and the fourth conical surface 226 is away from the central axis z than the fourth flat bearing portion 225. The third lens 230 includes a third straight abutting portion 233 and a third conical surface 234, wherein the third flat abutting portion 233 and the third conical surface 234 are both located on the object side surface 231 of the third lens 230, and the third The conical surface 234 is closer to the central axis z than the third flat abutment portion 233.

Therefore, the first conical surface 214 is in contact with the second conical surface 224 by the first straight abutting portion 213 and the second conical surface 223 is overlapped to assemble the first lens 210 and the second lens 220. At the same time, by the fourth conical surface 226 contacting the third conical surface 234, the object side surface 241 of the light shielding sheet 240 overlaps with the fourth flat bearing portion 225, and the image side surface 242 of the light shielding sheet 240 and the third flat bearing The bases 233 are overlapped to assemble the second lens 220 and the third lens 230. Next, as shown in FIG. 7, in the seventh embodiment, the imaging lens group 200 is further configured by using the object side surface 211 of the first lens 210 and the image side surface 232 of the third lens 230, respectively, with the lens 2220 and the lens. The 2230 is assembled to each other and is centered on the central axis z of the lens group. For other details of the imaging lens assembly 200 of the second embodiment, refer to the related content of the foregoing second embodiment, and details are not described herein again.

 <Eighth Embodiment>  

Please refer to FIG. 8. FIG. 8 is a cross-sectional view showing an imaging lens module 3000 according to an eighth embodiment of the present invention. As shown in FIG. 8, the imaging lens module 3000 includes a plastic lens barrel 3100 and an optical lens group 3200 disposed in the plastic lens barrel 3100. The optical lens group 3200 of the eighth embodiment includes the imaging method of the third embodiment of the present invention. Lens group 300.

Further, the plastic lens barrel 3100 includes a lens barrel opening 3110 having a minimum inner diameter position 3110a. Thereby, it helps to suppress stray light, thereby improving the imaging quality of the imaging lens module 3000. Furthermore, the minimum inner diameter position 3110a of the lens barrel opening 3110 can be the aperture of the imaging lens module 3000. Thereby, it is beneficial to reduce the mechanism complexity of the imaging lens module 3000.

The imaging lens module 3000 further includes an object side end 3300, an image side end 3400, and an imaging surface 3500, wherein the object side end 3300 faces an object to be imaged (not shown), and the image side end 3400 faces the imaging surface 3500. . Furthermore, the optical lens group 3200 is disposed in the plastic lens barrel 3100 along the optical axis of the imaging lens module 3000 (ie, coaxial with the central axis z of the imaging lens group 300), and is sequentially arranged from the object side end 3300 to the image side end 3400. The lens 3210, the first lens 310 of the third embodiment, the second lens 320 of the third embodiment, the third lens 330 of the third embodiment, the lens 3220, and the lens 3230 are included. In addition, the optical lens set 3200 further includes the light shielding sheet 340 of the third embodiment, and is disposed between the second lens 320 and the third lens 330. Thereby, it is more helpful to suppress stray light, thereby improving the imaging quality of the imaging lens module 3000.

Regarding the structural features of the first lens 310, the second lens 320, the third lens 330, and the light shielding sheet 340 in the imaging lens group 300 of the third embodiment, reference may again be made to FIG. 3A. In short, the first lens 310 includes a first straight abutting portion 313 and a first conical surface 314, wherein the first straight abutting portion 313 and the first conical surface 314 are both located on the image side surface 312 of the first lens 310. And the first conical surface 314 is closer to the central axis z than the first flat bearing portion 313. The second lens 320 includes a second straight bearing portion 323, a second conical surface 324, a fourth flat bearing surface 325 and a fourth conical surface 326, wherein the second flat bearing portion 323 and the second conical surface 324 Both are located on the object side surface 321 of the second lens 320, and the second conical surface 324 is closer to the central axis z than the second flat bearing portion 323. Moreover, the fourth flat bearing portion 325 and the fourth conical surface 326 are both located on the image side surface 322 of the second lens 320, and the fourth conical surface 326 is away from the central axis z than the fourth flat bearing portion 325. The third lens 330 includes a third straight abutting portion 333 and a third conical surface 334, wherein the third straight abutting portion 333 and the third conical surface 334 are both located on the object side surface 331 of the third lens 330, and the third The conical surface 334 is closer to the central axis z than the third flat abutment portion 333.

Therefore, the first conical surface 314 is in contact with the second conical surface 324 by the first flat abutting portion 313 and the second conical surface 323 is overlapped to assemble the first lens 310 and the second lens 320. At the same time, by the fourth conical surface 326 contacting the third conical surface 334, the object side surface 341 of the light shielding sheet 340 overlaps with the fourth flat bearing portion 325, and the image side surface 342 of the light shielding sheet 340 and the third flat bearing The bases 333 are overlapped to assemble the second lens 320 and the third lens 330. Next, as shown in FIG. 8, in the eighth embodiment, the imaging lens group 300 is further configured by using the object side surface 311 of the first lens 310 and the image side surface 332 of the third lens 330, respectively, with the lens 3210 and the lens. The 3220 is assembled to each other and is centered on the central axis z of the lens group. For other details of the imaging lens assembly 300 of the third embodiment, refer to the related content of the foregoing third embodiment, and details are not described herein again.

 <Ninth embodiment>  

Please refer to FIG. 9. FIG. 9 is a cross-sectional view showing the imaging lens module 4000 according to the ninth embodiment of the present invention. As shown in FIG. 9, the imaging lens module 4000 includes a plastic lens barrel 4100 and an optical lens group 4200 disposed in the plastic lens barrel 4100. The optical lens group 4200 of the ninth embodiment includes the imaging method of the fourth embodiment of the present invention. Lens group 400.

Further, the plastic lens barrel 4100 includes a lens barrel opening 4110 having a minimum inner diameter position 4110a. Thereby, it helps to suppress stray light, thereby improving the imaging quality of the imaging lens module 4000. Moreover, the minimum inner diameter position 4110a of the lens barrel opening 4110 can be the aperture of the imaging lens module 4000. Thereby, it is beneficial to reduce the mechanism complexity of the imaging lens module 4000.

The imaging lens module 4000 further includes an object side end 4300, an image side end 4400, and an imaging surface 4500, wherein the object side end 4300 faces an object to be imaged (not shown), and the image side end 4400 faces the imaging surface 4500. . Specifically, the imaging lens module 4000 further includes a glass panel 4600 disposed between the image side end 4400 and the imaging surface 4500. More specifically, the glass panel 4600 can be a protective glass element, a filter element, or both, without affecting the focal length of the optical lens set 4200.

Furthermore, the optical lens group 4200 is disposed in the plastic lens barrel 4100 along the optical axis of the imaging lens module 4000 (ie, coaxial with the central axis z of the imaging lens group 400), and is sequentially arranged from the object side end 4300 to the image side end 4400. The lens 4210, the first lens 410 of the fourth embodiment, the second lens 420 of the fourth embodiment, the third lens 430 of the fourth embodiment, and the lens 4220 are included. In addition, the optical lens set 4200 further includes the light shielding sheet 440 of the fourth embodiment, and is disposed between the second lens 420 and the third lens 430. Thereby, it is more helpful to suppress stray light, thereby improving the imaging quality of the imaging lens module 4000.

The structural features of the first lens 410, the second lens 420, the third lens 430, and the light shielding sheet 440 in the imaging lens group 400 of the fourth embodiment can be referred to FIG. 4A again. In short, the first lens 410 includes a first straight abutting portion 413 and a first conical surface 414, wherein the first straight abutting portion 413 and the first conical surface 414 are both located on the image side surface 412 of the first lens 410. And the first conical surface 414 is closer to the central axis z than the first flat abutting portion 413. The second lens 420 includes a second straight bearing portion 423, a second conical surface 424, a fourth flat bearing surface 425 and a fourth conical surface 426, wherein the second flat bearing portion 423 and the second conical surface 424 Both are located on the object side surface 421 of the second lens 420, and the second conical surface 424 is closer to the central axis z than the second flat bearing portion 423. Moreover, the fourth flat bearing portion 425 and the fourth conical surface 426 are both located on the image side surface 422 of the second lens 420, and the fourth conical surface 426 is away from the central axis z than the fourth flat bearing portion 425. The third lens 430 includes a third straight abutting portion 433 and a third conical surface 434, wherein the third straight abutting portion 433 and the third conical surface 434 are both located on the object side surface 431 of the third lens 430, and the third The conical surface 434 is closer to the central axis z than the third flat abutment portion 433.

Therefore, the first conical surface 414 is in contact with the second conical surface 424 by the first flat abutting portion 413 and the second conical surface 423 is overlapped to assemble the first lens 410 and the second lens 420. At the same time, by the fourth conical surface 426 contacting the third conical surface 434, the object side surface 441 of the light shielding sheet 440 overlaps with the fourth flat bearing portion 425, and the image side surface 442 of the light shielding sheet 440 and the third flat bearing The abutments 433 are overlapped to assemble the second lens 420 and the third lens 430. Next, as shown in FIG. 9, in the ninth embodiment, the imaging lens group 400 is further configured by using the object side surface 411 of the first lens 410 and the image side surface 432 of the third lens 430, respectively, with the lens 4210 and the lens. The 4220 is assembled to each other and is centered on the central axis z of the lens group. For other details of the imaging lens set 400 of the fourth embodiment, refer to the related content of the foregoing fourth embodiment, and details are not described herein again.

 <Tenth embodiment>  

Please refer to FIG. 10, which is a cross-sectional view showing an imaging lens module 5000 according to a tenth embodiment of the present invention. As shown in FIG. 10, the imaging lens module 5000 includes a plastic lens barrel 5100 and an optical lens group 5200 disposed in the plastic lens barrel 5100. The optical lens group 5200 of the tenth embodiment includes the imaging method of the fifth embodiment of the present invention. Lens group 500.

Further, the plastic lens barrel 5100 includes a lens barrel opening 5110 having a minimum inner diameter position 5110a. Thereby, it helps to suppress stray light, thereby improving the imaging quality of the imaging lens module 5000. Moreover, the minimum inner diameter position 5110a of the lens barrel opening 5110 can be the aperture of the imaging lens module 5000. Thereby, the mechanism complexity of the imaging lens module 5000 is reduced.

The imaging lens module 5000 further includes an object side end 5300, an image side end 5400, and an imaging surface 5500, wherein the object side end 5300 faces an object to be imaged (not shown), and the image side end 5400 faces the imaging surface 5500. . Specifically, the imaging lens module 5000 further includes a glass panel 5600 disposed between the image side end 5400 and the imaging surface 5500. More specifically, the glass panel 5600 can be a protective glass element, a filter element, or both, without affecting the focal length of the optical lens set 5200.

Furthermore, the optical lens group 5200 is disposed in the plastic lens barrel 5100 along the optical axis of the imaging lens module 5000 (ie, coaxial with the central axis z of the imaging lens group 500), and is sequentially arranged from the object side end 5300 to the image side end 5400. The lens 5210, the first lens 510 of the fifth embodiment, the second lens 520 of the fifth embodiment, the third lens 530 of the fifth embodiment, and the lens 5220 are included. In addition, the optical lens set 5200 further includes the light shielding sheet 540 of the fifth embodiment, and is disposed between the second lens 520 and the third lens 530. Thereby, it is more helpful to suppress stray light, thereby improving the imaging quality of the imaging lens module 5000.

The structural features of the first lens 510, the second lens 520, the third lens 530, and the light shielding sheet 540 in the imaging lens group 500 of the fifth embodiment can be referred to FIG. 5A again. In short, the first lens 510 includes a first straight abutting portion 513 and a first conical surface 514, wherein the first straight abutting portion 513 and the first conical surface 514 are both located on the image side surface 512 of the first lens 510. And the first conical surface 514 is closer to the central axis z than the first flat bearing portion 513. The second lens 520 includes a second straight bearing portion 523, a second conical surface 524, a fourth flat bearing surface 525 and a fourth conical surface 526, wherein the second flat bearing portion 523 and the second conical surface 524 Both are located on the object side surface 521 of the second lens 520, and the second conical surface 524 is closer to the central axis z than the second flat bearing portion 523. Moreover, the fourth flat bearing portion 525 and the fourth conical surface 526 are both located on the image side surface 522 of the second lens 520, and the fourth conical surface 526 is away from the central axis z than the fourth flat bearing portion 525. The third lens 530 includes a third straight abutting portion 533 and a third conical surface 534, wherein the third flat abutting portion 533 and the third conical surface 534 are both located on the object side surface 531 of the third lens 530, and the third The conical surface 534 is closer to the central axis z than the third flat abutment portion 533.

Therefore, the first conical surface 514 is in contact with the second conical surface 524 by the first flat abutting portion 513 and the second conical surface 524 is overlapped to assemble the first lens 510 and the second lens 520. At the same time, by the fifth conical surface 526 contacting the third conical surface 534, the object side surface 541 of the light shielding sheet 540 overlaps with the fourth flat bearing portion 525, and the image side surface 542 of the light shielding sheet 540 and the third flat bearing The bases 533 are overlapped to assemble the second lens 520 and the third lens 530. Next, as shown in FIG. 10, in the tenth embodiment, the imaging lens group 500 is further configured by using the object side surface 511 of the first lens 510 and the image side surface 532 of the third lens 530, respectively, with the lens 5210 and the lens. The 5220 is assembled to each other and is centered on the central axis z of the lens group. For other details of the imaging lens group 500 of the fifth embodiment, refer to the related content of the foregoing fifth embodiment, and details are not described herein again.

 <Eleventh Embodiment>  

Referring to FIG. 11A and FIG. 11B, FIG. 11A is a schematic diagram of an electronic device 10 according to an eleventh embodiment of the present invention, and FIG. 11B is another schematic diagram of the electronic device 10 of the eleventh embodiment. 11A and 11B are particularly schematic views of the camera in the electronic device 10. As shown in FIG. 11A and FIG. 11B , the electronic device 10 of the eleventh embodiment is a smart phone, and the electronic device 10 includes a camera module 11 , and the camera module 11 includes the imaging lens module 12 and the electronic device according to the present invention. The photosensitive element 13 is disposed on the imaging surface of the imaging lens module 12 (not shown). Thereby, with good imaging quality, it can meet the high-standard imaging requirements of electronic devices today.

Further, the user enters the shooting mode through the user interface 19 of the electronic device 10. The user interface 19 in the eleventh embodiment may be the touch screen 19a, the button 19b, and the like. At this time, the imaging lens module 12 collects the imaging light on the electronic photosensitive element 13 and outputs an electronic signal about the image to an Image Signal Processor (ISP) 18.

Referring to FIG. 11C, a block diagram of the electronic device 10 in the eleventh embodiment, particularly a camera block diagram in the electronic device 10, is shown. The camera module 11 can further include an autofocus component 14 and an optical anti-shake component 15 according to the camera specifications of the electronic device 10. The electronic device 10 can further include at least one auxiliary optical component 17 and At least one sensing element 16. The auxiliary optical component 17 can be a flash module that compensates for color temperature, an infrared ranging component, a laser focusing module, etc., and the sensing component 16 can have functions of sensing physical momentum and operating energy, such as an accelerometer, a gyroscope, and a Hall. The Hall Effect Element senses the shaking and shaking applied by the user's hand or the external environment, and the AF module 14 and the optical anti-shake component 15 configured by the camera module 11 function to obtain a good function. The imaging quality helps the electronic device 10 according to the present invention to have various modes of shooting functions, such as optimized self-photographing, low light source HDR (High Dynamic Range imaging), high resolution 4K (4K Resolution) recording, and the like. In addition, the user can directly view the camera's shooting screen by the touch screen 19a, and manually operate the viewing range on the touch screen 19a to achieve the WYSIWYG autofocus function.

In addition, as shown in FIG. 11B, the camera module 11, the sensing component 16, and the auxiliary optical component 17 can be disposed on a flexible printed circuit board (FPC) 77, and electrically connected to the imaging signal through the connector 78. The component 18 and the like are processed to perform a photographing process. The current electronic devices, such as smart phones, have a thin trend. The camera modules and related components are arranged on a flexible circuit board, and then the connectors are used to integrate the circuits to the main board of the electronic device, thereby satisfying the mechanism design of the limited space inside the electronic device. And the circuit layout requirements and greater margins, the camera module's autofocus function allows for more flexible control through the touch screen of the electronic device. In the eleventh embodiment, the electronic device 10 includes a plurality of sensing elements 16 and a plurality of auxiliary optical elements 17, and the sensing elements 16 and the auxiliary optical elements 17 are disposed on the flexible circuit board 77 and at least one other flexible circuit board (not shown) In addition, the corresponding components such as the imaging signal processing component 18 are electrically connected to the corresponding connector to perform the photographing process. In other embodiments (not shown), the sensing component and the auxiliary optical component may also be disposed on the main board of the electronic device or other forms of the carrier according to the mechanism design and circuit layout requirements.

In addition, the electronic device 10 may further include, but is not limited to, a Wireless Communication Unit, a Control Unit, a Storage Unit, a temporary storage unit (RAM), a read-only storage unit (ROM), or combination.

 <Twelfth Embodiment>  

Referring to FIG. 12, FIG. 12 is a schematic diagram of an electronic device 20 according to a twelfth embodiment of the present invention. The electronic device 20 of the twelfth embodiment is a tablet computer. The electronic device 20 includes an imaging lens module 22 and an electronic photosensitive element (not shown) according to the present invention, wherein the electronic photosensitive element is disposed on the imaging lens module 22 for imaging. Face (not shown).

 <Thirteenth Embodiment>  

Referring to FIG. 13, FIG. 13 is a schematic view showing an electronic device 30 according to a thirteenth embodiment of the present invention. The electronic device 30 of the thirteenth embodiment is a wearable device. The electronic device 30 includes an imaging lens module 32 and an electronic photosensitive element (not shown) according to the present invention, wherein the electronic photosensitive element is disposed on the imaging lens module 32. Imaging surface (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 set comprising at least three plastic lenses and at least one light shielding film, the imaging lens group having a central axis, each of the at least three plastic lenses and the at least one light shielding film comprising: an object side surface; and an image The side surface is disposed opposite to the object side surface; wherein the at least three plastic lenses are sequentially along the central axis from the object side to the image side: a first lens comprising: a first flat bearing portion located at the side The image side surface of the first lens; and a first conical surface on the image side surface of the first lens, and the first conical surface is closer to the central axis than the first flat bearing portion; a lens comprising: a second flat bearing portion on the object side surface of the second lens; a second conical surface on the object side surface of the second lens, wherein the second conical surface is a second flat bearing portion is adjacent to the central axis; a fourth flat bearing portion is located on the image side surface of the second lens; and a fourth conical surface is located on the image side surface of the second lens And the fourth conical surface is away from the central axis than the fourth flat bearing a third lens comprising: a third flat bearing portion on the object side surface of the third lens; and a third conical surface on the object side surface of the third lens, and the third The conical surface is away from the central axis than the third flat bearing portion; wherein the first flat bearing portion overlaps with the second flat bearing portion, the first conical surface is in contact with the second conical surface, The third conical surface is in contact with the fourth conical surface; wherein the at least one light shielding sheet has a central opening and is coaxially arranged with the at least three plastic lenses, and the at least one light shielding film is disposed on the second lens and the third lens And further comprising: an outer diameter surface, the object side surface connecting the light shielding sheet and the image side surface and coaxial with the central opening, and the object side surface of the light shielding sheet and the fourth straight bearing The image side surface overlaps with the third flat bearing portion; wherein the fourth conical surface has a minimum diameter of ψ4, and the second conical surface has a maximum diameter of ψ2, the first lens The outer diameter is D1, which satisfies the following conditions: 0.13 mm < (ψ4-ψ2)/2<1.20 mm; and 0.9<ψ4 /D1<1.35. The imaging lens assembly of claim 1, wherein the first conical surface and the second conical surface and the fourth conical surface and the third conical surface are both assembled to each other and are aligned with the central axis. The imaging lens set according to claim 2, wherein the diameter of the outer diameter surface of the at least one light shielding sheet is D, and the minimum diameter of the fourth conical surface is ψ4, which satisfies the following condition: |ψ4-D |/2 0.05mm. The imaging lens set according to claim 2, wherein the fourth conical surface has a minimum diameter of ψ4, and the second conical surface has a maximum diameter of ψ2, which satisfies the following condition: 0.18 mm<(ψ4-ψ2) /2<0.85mm. The imaging lens assembly of claim 2, wherein the diameter of the outer diameter surface of the at least one light shielding sheet is D, and the minimum diameter of the fourth conical surface is ψ4, and the maximum diameter of the second conical surface is Ψ2, which satisfies the following condition: 0.6 < (π^2) × ((ψ4-ψ2)/D) < 3.6. The imaging lens assembly of claim 5, wherein the diameter of the outer diameter surface of the at least one light shielding sheet is D, and the minimum diameter of the fourth conical surface is ψ4, and the maximum diameter of the second conical surface is Ψ2, which satisfies the following condition: 0.82 < (π^2) × ((ψ4-ψ2)/D) < 2.9. The imaging lens assembly of claim 2, wherein the second conical surface has an angle α1 with one of the central axes and corresponds to an angle between the first conical surface and the central axis, the fourth conical portion The angle between the face and the central axis is α2 and corresponds to an angle between the third conical surface and the central axis, which satisfies the following conditions: 3 degrees < α1 < 42 degrees; and 3 degrees < α2 < 42 degrees. An imaging lens as described in claim 2 And a minimum inner diameter of the central opening of the at least one light shielding sheet is ψi, and the diameter of the outer diameter surface of the at least one light shielding sheet is D, which satisfies the following condition: 0.4<ψi/D<0.76. The imaging lens unit according to claim 1, wherein the first lens has an outer diameter D1, the second lens has an outer diameter D2, and the fourth conical surface has a minimum diameter of ψ4, which satisfies the following conditions: :D1 Ψ4<D2. The imaging lens assembly of claim 1, wherein the fourth conical surface is in contact with the third conical surface only by the fourth conical surface. The imaging lens unit according to claim 1, wherein the first lens has an outer diameter D1, and the fourth conical surface has a minimum diameter of ψ4, which satisfies the following condition: 0.94 < ψ 4 / D1 < 1.15. The imaging lens set according to claim 1, wherein the fourth conical surface has an angle α2 with the central axis and corresponds to an angle between the third conical surface and the central axis, which satisfies the following conditions: 13 degrees < α2 < 33 degrees. The imaging lens unit according to claim 1, wherein the second lens has an outer diameter D2, and the fourth conical surface has a width w4, which satisfies the following condition: 0.1<(π^2)×w4/ D2 < 0.45. The imaging lens set according to claim 1, wherein the fourth conical surface has a width w4, the fourth conical surface has a minimum diameter of ψ4, and the second conical surface has a maximum diameter of ψ2, which satisfies the following Conditions: 2.2 < (ψ4-ψ2) / (2 × w4) < 6.2. The imaging lens set according to claim 1, wherein the fourth conical surface has a width w4, the fourth conical surface has a minimum diameter of ψ4, and the second conical surface has a maximum diameter of ψ2, which satisfies the following Conditions: 2.8 < (ψ4-ψ2) / (2 × w4) < 5.4. The imaging lens unit of claim 1, wherein a portion of the third conical surface does not overlap the second lens in a direction perpendicular to one of the central axes. An imaging lens module comprising: a plastic lens barrel, comprising a lens barrel opening, wherein a minimum inner diameter of the lens barrel opening is an aperture of the imaging lens module; and The imaging lens set is characterized in that the imaging lens set is disposed in the plastic lens barrel. An electronic device comprising: the imaging lens module of claim 17; and an electronic photosensitive element disposed on an imaging surface of the imaging lens module.