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A pinhole monitoring optical system and its applied lens

An optical system and pinhole technology, applied in the field of lens, can solve the problems of large volume of optical system or lens, narrow field of view, not clear enough imaging, etc., achieve large depth of field, wide field of view, and improve imaging effect Effect

Active Publication Date: 2017-04-05
GUANGDONG HONGJING OPTOELECTRONICS TECHONLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the problems in the prior art that the optical system or the lens is too large, the field of view is narrow, and the imaging is not clear enough, the embodiment of the present invention provides a pinhole monitoring optical system on the one hand

Method used

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  • A pinhole monitoring optical system and its applied lens
  • A pinhole monitoring optical system and its applied lens
  • A pinhole monitoring optical system and its applied lens

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Embodiment Construction

[0022] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] Such as figure 1 As shown, a pinhole monitoring optical system includes at least a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens along the optical axis from the object plane to the image plane, and the second lens and the third lens are bonded together to form a first cemented lens, the fifth lens and the sixth lens are bonded to form a second cemented lens, and the fourth lens is an aspheric lens; the optical system meets the following conditions:

[0024] (1) -0.077

[0025] (2) 0.41

[0026] (3) 0.17

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Abstract

One embodiment of the invention discloses a pin hole monitoring optical system. The system at least comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein the fourth lens is an aspheric lens. The optical system satisfies the following conditions: (1), -0.077<f / f23<-0.053; (2), 0.41<f / f4<0.67; and (3), 0.17<f / f56<0.23. On the other hand, another embodiment of the invention also provides a lens. According to the embodiments of the invention, the lens has a quite wide vision angle; at the same time, the optical total length of the optical system or the lens is shortened, the imaging effect of the lens is improved, and miniaturization of the optical system or the lens is realized; and besides, the optical system or the lens has the excellent performance of providing high-pixel clear images and has a quite large field depth scope, an object within the scope of 0.6m to 1.8m can be seen during nearby shooting, and shooting of an object from 1m to infinite far away can be realized during remote shooting.

Description

[0001] Technical field: [0002] The invention relates to a pinhole monitoring optical system and a lens applied thereto. [0003] Background technique: [0004] Existing monitoring optical systems or lenses have the problems of large volume, narrow field of view, and unclear imaging. [0005] Invention content: [0006] In order to overcome the problems in the prior art that the volume of the optical system or the lens is too large, the range of the field of view is narrow, and the imaging is not clear enough, the embodiments of the present invention provide a pinhole monitoring optical system on the one hand. [0007] A pinhole monitoring optical system, which sequentially includes at least a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens along an optical axis from an object plane to an image plane, the second lens and the third lens The lenses are bonded to each other to form a first cemented lens, the fifth lens and the sixth lens are bonded to e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/18G02B13/06G02B13/00
CPCG02B13/0045G02B13/06
Inventor 松冈和雄陈波赵治平汪鸿飞刘佳俊席爱萍龙泽刚蔡中辉王朵久
Owner GUANGDONG HONGJING OPTOELECTRONICS TECHONLOGY CO LTD