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Three-piece type thin imaging lens group

A three-piece, lens group technology, applied in the field of lens groups, can solve the problems of complex circuit structure, difficulty in miniaturization, and high unit price of products

Active Publication Date: 2020-05-08
NEWMAX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current biometric identification systems used in mobile devices use the capacitor principle. Although it can reduce the size required for the biometric identification system, the circuit structure is too complicated, which makes the manufacturing cost too high and the relative unit price of the product is also high.
[0003]At present, although there are traditional biometric identification systems using the principle of optical imaging, such as fingerprint identification, vein identification, etc., the traditional biometric identification system has the problem of being too large, making it difficult to carry Electronic devices with biometric identification systems are not easy to miniaturize and are even more difficult to carry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0078] Please refer to Figure 1A , Figure 1B and Figure 1C ,in Figure 1A A schematic diagram showing a three-piece thin imaging lens set according to the first embodiment of the present invention, Figure 1B for Figure 1A A partial enlargement of the . Figure 1C From left to right are the field curvature and distortion aberration curves of the three-piece thin imaging lens set of the first embodiment. Depend on Figure 1A and Figure 1B It can be seen that the three-piece thin imaging lens group includes a flat plate element 160, a first lens 110, an aperture 100, a second lens 120, a third lens 130, an infrared filter filter 170, and an imaging lens in sequence from the object side to the image side. Surface 180, wherein the lens with refractive power in the three-piece thin imaging lens group is three pieces (110, 120, 130). The aperture 100 is disposed between the first lens 110 and the second lens 120 .

[0079] The plate element 160 is made of glass, and is dis...

no. 2 example

[0110] Please refer to Figure 2A , Figure 2B and Figure 2C ,in Figure 2A A schematic diagram showing a three-piece thin imaging lens group according to the second embodiment of the present invention, Figure 2B for Figure 2A A partial enlargement of the . Figure 2C From left to right are the field curvature and distortion aberration curves of the three-piece thin imaging lens set of the second embodiment. Depend on Figure 2A and Figure 2B It can be seen that the three-piece thin imaging lens group includes a flat plate element 260, a first lens 210, an aperture 200, a second lens 220, a third lens 230, an infrared filter filter 270, and an imaging lens in sequence from the object side to the image side. Surface 280, wherein the lens with refractive power in the three-piece thin imaging lens group is three pieces (210, 220, 230). The aperture 200 is disposed between the first lens 210 and the second lens 220 .

[0111] The plate element 260 is made of glass, an...

no. 3 example

[0123] Please refer to Figure 3A , Figure 3B and Figure 3C ,in Figure 3A A schematic diagram showing a three-piece thin imaging lens set according to a third embodiment of the present invention, Figure 3B for Figure 3A A partial enlargement of the . Figure 3C From left to right are the field curvature and distortion aberration curves of the three-piece thin imaging lens set of the third embodiment. Depend on Figure 3A and Figure 3B It can be seen that the three-piece thin imaging lens group includes a flat plate element 360, a first lens 310, an aperture 300, a second lens 320, a third lens 330, an infrared filter filter 370, and an imaging lens in sequence from the object side to the image side. Surface 380, wherein the lens with refractive power in the three-piece thin imaging lens group is three pieces (310, 320, 330). The aperture 300 is disposed between the first lens 310 and the second lens 320 .

[0124] The plate element 360 is made of glass, and is d...

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Abstract

The invention discloses a three-piece type thin imaging lens group. The three-piece type thin imaging lens group sequentially comprises, from an object side to an image side: a flat plate element, which is made of glass; a first lens, which has negative refractive power and has a concave face close to an optical axis on an object side surface; an aperture; a second lens, which has positive refractive power and has a convex face close to an optical axis on an image side surface; and a third lens, which has positive refractive power. Therefore, large-angle light can be effectively collected, thethree-piece type thin imaging lens group can receive images in a larger range within an extremely short object distance and achieve an identification effect, the distance between a shot object and the three-piece type thin imaging lens group can be shortened, the size can be effectively reduced, and miniaturization of the three-piece type thin imaging lens group can be maintained.

Description

technical field [0001] The invention relates to a lens set, in particular to a three-piece thin imaging lens set applied to electronic products. Background technique [0002] The biometric system based on the unique biological characteristics of each creature is often used because of its uniqueness, universality, permanence, measurability, convenience, acceptability, and non-deception It can be used on existing mobile devices currently on the market, and can even be used on future electronic devices. However, most of the current biometric identification systems for mobile devices use the capacitor principle. Although it can reduce the size required for the biometric identification system, the circuit structure is too complex, which makes the manufacturing cost too high and the relative unit price of the product is also relatively high. [0003] At present, although there are traditional biometric identification systems that use the principle of optical imaging, such as fing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G06K9/20
CPCG02B13/0035G06V10/147
Inventor 黄靖昀
Owner NEWMAX TECH
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