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Day and night confocal large target HD lens

A large target surface and lens technology, applied in the direction of installation, optics, instruments, etc., to achieve the effect of compact structure, coordinated proportion, and low distortion

Active Publication Date: 2016-06-15
FUJIAN FORECAM OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This resolution is far from meeting the requirements of today's high-definition cameras.

Method used

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  • Day and night confocal large target HD lens
  • Day and night confocal large target HD lens

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments and related drawings.

[0022] Such as Figure 1~2 As shown, a day and night confocal large-target high-definition lens, the optical system of the lens is provided with a front fixed group with a positive focal power and a zoom with a negative focal power along the incident direction of the light from left to right. group, the rear fixed group with positive refractive power and the compensation group with positive refractive power; an iris diaphragm is set between the zoom group and the rear fixed group; the front fixed group includes the first set from left to right A positive crescent lens 11, a second positive crescent lens 10, a first negative crescent lens 9 and a double-convex lens 8 in close contact with the first cemented group; Lens 7 and the second biconvex lens 6 and the ...

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Abstract

The invention relates to a day and night confocal large-target high-definition lens. The optical system of the lens is provided with a front fixed group with a positive focal power and a variable magnification group with a negative focal power along the incident direction of light from left to right. group, the rear fixed group with positive refractive power and the compensation group with positive refractive power; the front fixed group includes the first positive crescent lens, the second positive crescent lens, and the first negative crescent lens and the first double convex lens. A cemented group; the variable power group includes the first double concave lens and the second double concave lens and the second double convex lens in close contact with the second glued group; the rear fixed group includes the second double convex lens, the third double convex lens The third cemented group and the third positive crescent lens in close contact with the second negative crescent lens; the compensation group includes the fourth biconvex lens, the third negative crescent lens and the fourth cemented group in close contact with the fifth biconvex lens and a fourth negative crescent lens. The lens has high optical index and high resolution, and can meet the requirements of high-definition video recording.

Description

technical field [0001] The invention relates to a day and night confocal large-target high-definition lens, which belongs to the field of optical imaging devices of video technology. Background technique [0002] With the increasingly dense traffic network and increasingly busy traffic, in order to maintain traffic safety, prevent traffic jams, and achieve orderly under busy road conditions; it is of practical significance to provide a day and night confocal high-resolution lens for the development of intelligent transportation systems. Most of the zoom lenses currently on the market are simple in structure and low in performance indicators. In terms of image clarity, they can only be adapted to standard-definition CCD or CMOS cameras with 2-3 million pixels. The need for "seeing" in the monitoring field. This resolution is far from meeting the requirements of today's high-definition cameras. Contents of the invention [0003] In view of this, the purpose of the present ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/04G02B13/14G02B7/02G02B7/04G02B1/00
Inventor 苏青年屈立辉刘任重潘寿恩
Owner FUJIAN FORECAM OPTICS CO LTD
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