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Small-target-surface high-resolution ultra-wide field fish-eye lens

A high-resolution, wide-angle fish technology, applied in optical components, optics, instruments, etc., can solve the problems of large field of view and close-up distance, great differences in performance indicators, and large application limitations. Spectral confocal, compact structure, clear imaging effect

Active Publication Date: 2014-05-28
FUJIAN FORECAM OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The emergence and application of small TV surveillance cameras have a history of 20 to 30 years, and there are various specifications and models of miniature camera lenses to match them. Their performance indicators vary greatly, and their application limitations are large, and most of them are low-end. The product has low performance indicators, and most of them can only be applied to ordinary cameras that are generally only suitable for 200,000 to 300,000 pixels. large range

Method used

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  • Small-target-surface high-resolution ultra-wide field fish-eye lens

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Embodiment Construction

[0020] 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.

[0021] Such as figure 1 As shown, a small target surface high-resolution ultra-wide-angle fisheye lens, the optical system of the lens is provided with a front group A and a rear group B of lens groups in sequence along the incident direction of light from left to right, and the front group A There is a diaphragm C between the rear group B, and the front group A includes a negative crescent lens A-1 (1), a negative crescent lens A-2 (2), and a biconcave lens A arranged in sequence from left to right. -3(3) and biconvex lens A-4(4); the rear group B includes biconvex lens B-1(5), biconvex lens B-2(6) and negative crescent lens B arranged in sequence from left to right -3(7) close-fitting cemented groups and bi-convex lenses B-4(8).

[0022] In this embodiment...

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Abstract

The invention relates to a small-target-surface high-resolution ultra-wide field fish-eye lens. According to the lens, an optical system is provided with a front group A and a back group B of lens groups along the light incidence direction from left to right in sequence, wherein a diaphragm C is arranged between the front group A and the back group B; the group A comprises a negative crescent lens A-1, a negative crescent lens A-2, a double-concave lens A-3 and a double-convex lens A-4 which are arranged in sequence from left to right; the group B comprises a double-convex lens B-1, a gluing group which is in sealed connection with a double-convex lens B-2 and a negative crescent lens B-3, and a double-convex lens B-4. The small-target-surface high-resolution ultra-wide field fish-eye lens has the performances of full view fields, water prevention, dust prevention, scraping prevention and utilization in day and night, and can be applied to security and protection monitoring of oversized view fields, particularly lobbies of hotels, clubs and the like.

Description

technical field [0001] The invention relates to a small target surface high-resolution ultra-wide-angle fisheye lens, which belongs to the field of optical imaging devices of video technology. Background technique [0002] The emergence and application of small TV surveillance cameras have a history of 20 to 30 years, and there are various specifications and models of miniature camera lenses to match them. Their performance indicators vary greatly, and their application limitations are large, and most of them are low-end. The product has low performance indicators, and most of them can only be applied to ordinary cameras that are generally only suitable for 200,000 to 300,000 pixels. The distance limit is large. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide a full field of view, waterproof, dustproof, scratch-resistant and day and night dual-purpose small target surface high-resolution ultra-wide-angle fisheye lens,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/06G02B13/00
Inventor 郑锦彬刘辉刘任重陈开阮
Owner FUJIAN FORECAM OPTICS CO LTD
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