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Optical imaging lens

An optical imaging lens and lens technology, applied in optics, optical components, instruments, etc., can solve problems such as small field of view, limited recognition range, and incapable of imaging and recognition, and achieve high imaging quality

Pending Publication Date: 2020-07-10
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing miniaturized cameras generally have a small field of view and a limited recognition range, and cannot perform large-scale imaging recognition on object surfaces at a relatively static position.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Refer to the following Figure 1 to Figure 2D An optical imaging lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown.

[0072] Such as figure 1 As shown, the optical imaging lens includes: glass screen E1, first lens E2, diaphragm STO, second lens E3, third lens E4, filter E5 and imaging surface S11 in sequence from the object side to the image side.

[0073] The glass screen E1 has an object side S1 and an image side S2. The first lens E2 has negative refractive power, its object side S3 is concave, and its image side S4 is convex. The second lens E3 has positive refractive power, its object side S5 is convex, and its image side S6 is convex. The third lens E4 has positive refractive power, its object side S7 is convex, and its image side S8 is concave. The filter E5 has an object side S9 and an image side S10. The l...

Embodiment 2

[0085] Refer to the following Figure 3 to Figure 4D An optical imaging lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. image 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown.

[0086] Such as image 3 As shown, the optical imaging lens includes: glass screen E1, first lens E2, diaphragm STO, second lens E3, third lens E4, filter E5 and imaging surface S11 in sequence from the object side to the image side.

[0087] The glass screen E1 has an object side S1 and an image side S2. The first lens E2 has negative refractive power, its object side S3 is concave, and its image side S4 is convex. The second lens E3 has positive refractive power, its object side S5 is convex, and its image side S6 is convex. The third lens E4 has positive refractiv...

Embodiment 3

[0096] Refer to the following Figure 5 to Figure 6D An optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown.

[0097] Such as Figure 5 As shown, the optical imaging lens includes: glass screen E1, first lens E2, diaphragm STO, second lens E3, third lens E4, filter E5 and imaging surface S11 in sequence from the object side to the image side.

[0098] The glass screen E1 has an object side S1 and an image side S2. The first lens E2 has negative refractive power, its object side S3 is concave, and its image side S4 is concave. The second lens E3 has positive refractive power, its object side S5 is convex, and its image side S6 is convex. The third lens E4 has negative refractive power, its object side S7 is convex, and its image side S8 is concave. The filter E5 has an object side S9 and an image side S10. Th...

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PUM

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Abstract

The invention discloses an optical imaging lens which sequentially comprises, from an object side to an image side along an optical axis, a first lens with negative focal power, a second lens with focal power, and a third lens with focal power, wherein the image side surface of the first lens is a concave surface, and the image side surface of the third lens is a concave surface; the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy the following conditional expressions: f < 0.5 mm; 1.6<f / EPD<2.4.

Description

technical field [0001] The present application relates to the field of optical elements, in particular, to an optical imaging lens. Background technique [0002] At present, the mainstream fingerprint identification technologies on the market include semiconductor silicon technology, optical imaging technology and ultrasonic technology, etc. Among them, the use of optical imaging technology for fingerprint identification occupies a dominant position in the market. With the further development of information technology, more and more electronic devices urgently need a portable micro-lens that can provide close-range and wide-range identification. However, the existing miniaturized cameras generally have a small field of view and a limited recognition range, and cannot perform large-scale imaging recognition on object surfaces at a relatively static position. [0003] How to realize a miniaturized camera capable of performing a large-scale visible light imaging recognition on...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0035G02B13/06G02B13/18
Inventor 谢检来戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD