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Two-piece type micro lens and electronic equipment

A miniature lens, two-piece technology, applied in the field of optical lenses, can solve problems such as small field of view

Pending Publication Date: 2021-10-26
深圳市晶钛光学股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of two-piece miniature lens, to solve the problem that the field angle of existing two-piece miniature lens is small

Method used

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  • Two-piece type micro lens and electronic equipment
  • Two-piece type micro lens and electronic equipment
  • Two-piece type micro lens and electronic equipment

Examples

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Embodiment Construction

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Several embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0031] It should be noted that when an element is referred to as being “fixed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

[0032] Unless otherwise def...

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PUM

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Abstract

The invention provides a two-piece type micro lens. The micro lens comprises a first lens, a diaphragm, a second lens, an optical filter and chip glass, wherein an object side surface of the optical axis area of the first lens is a concave surface, an image side surface of the optical axis area of the first lens is a concave surface, and an image side surface of the optical axis area of the second lens is a convex surface; the two micro lenses meet the following relational expressions that f1' is less than 0, and f2' is greater than 0; FNO > / = 2.2; 0.45<IH / TTL< 0.55, 1.5< IH / f'<3.5; -2.5< f1' / f2'<-1.0, -0.65<f' / f1'<-0.4, and 0.65<f' / f2'<1.0; wherein FNO is the relative aperture of the two-piece type micro lens, TTL is the distance between the object side surface and the image surface of the first lens, IH is the image height of the two-piece type micro lens, f' is the focal length of the two-piece type micro lens, and the focal lengths from the first lens to the second lens are f1' and f2' respectively. According to the two-piece type micro lens, through setting the structures and parameters of the first lens and the second lens, the field angle of the product can reach 80-140, and the field angle of the product is greatly improved.

Description

technical field [0001] The invention relates to the technical field of optical lenses, in particular to a two-piece miniature lens and electronic equipment. Background technique [0002] The lens is an indispensable part of the machine vision system, which directly affects the quality of the image and affects the realization and effect of the algorithm. Lenses can be divided into short-focus lenses, medium-focus lenses, and telephoto lenses in terms of focal length; wide-angle lenses, standard lenses, and telephoto lenses can be divided into wide-angle lenses based on the size of the field of view. [0003] Existing lenses are often used in small camera equipment such as mobile phones, so the market demand for micro lenses is increasing, and the existing micro lenses generally have a small field of view. The field of view of a general two-piece micro lens The angle of view is only below 60. If you need to increase the field of view, you need to increase the number of lenses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/003G03B30/00
Inventor 陈洪林覃道发
Owner 深圳市晶钛光学股份有限公司