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F6mm all-pass day and night full-color high-definition fixed-focus lens

A fixed-focus lens and light-passing technology, applied in optics, optical components, instruments, etc., can solve the problems of low lens performance index and unclear imaging effect, and achieve the effect of high resolution, compact structure and sufficient light input.

Active Publication Date: 2017-02-22
福建福光光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are various fixed-focus lenses used in security systems on the market. However, most of the lenses on the market currently have low academic performance indicators, and most of them are low-end products, which can only be adapted to low-pixel lenses. Ordinary camera
At the same time, with the improvement of people's quality of life and safety awareness, the pursuit of camera imaging quality is getting higher and higher. At the same time, monitoring systems are used more and more frequently in night or low-light environments. It is difficult to obtain clear imaging in the environment, but the current products in the market are almost difficult to achieve. Even if there is, it can barely meet the needs of low-light viewing, and the imaging effect is not clear.

Method used

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  • F6mm all-pass day and night full-color high-definition fixed-focus lens
  • F6mm all-pass day and night full-color high-definition fixed-focus lens
  • F6mm all-pass day and night full-color high-definition fixed-focus lens

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Embodiment Construction

[0014] Such as Figure 1~2 As shown, a f6mm all-through light day and night full-color high-definition fixed-focus lens, the optical system of the lens is sequentially provided with a front lens group A with a negative focal power, a diaphragm and a focal power along the incident direction of the light from the front to the rear. It is a positive rear lens group B to achieve the purpose of front and rear compensation; the front lens group A includes biconcave lens A-1, negative crescent lens A-2 and biconvex lens A-3 arranged in sequence from front to back; The rear lens group B includes a double-convex lens B-1, a double-concave lens B-2, a double-convex lens B-3, and a glued group consisting of a double-convex lens B-4 and a negative crescent lens B-5, which are arranged in sequence from front to back. A filter is also arranged behind the glued group.

[0015] In this embodiment, the air interval between the biconcave lens A-1 and the negative crescent lens A-2 is 1.56mm, a...

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Abstract

The invention relates to an f6mm all-pass day and night full-color high-definition fixed-focus lens, which is characterized in that in an optical system of the lens, a front lens group A with the negative focal power, a diaphragm and a back lens group B with the positive focal power are sequentially arranged in the incidence direction of light rays from the front side to the back side; the front lens group A comprises a biconcave lens A-1, a negative crescent lens A-2 and a biconvex lens A-3 in sequential arrangement front the front side to the back side; the back lens group B comprises a biconvex lens B-1, a biconcave lens B-2, a biconvex lens B-3 and a gluing group in sequential arrangement from the front side to the back side; the gluing group is sealed, connected and bonded with a biconvex lens B-4 and a negative crescent lens B-5. The lens provided by the invention can still be used normally in high-low-temperature environment; the resolution is high; the high-quality color imaging can be realized in low-illumination and night environment; the total length of the light path is short; the structure is compact; the light passing caliber is in the full light passing state; the light inlet quantity is sufficient; the matching with high-resolution CCD (charge coupled device) or CMOS (complementary metal-oxide-semiconductor transistor) being 3-million pixels or higher can be realized.

Description

technical field [0001] The invention relates to an f6mm full-pass light day and night full-color high-definition fixed-focus lens. Background technique [0002] The network camera was born in the mid-1990s. The lens is the main component of the camera, and its performance directly affects the image quality. At present, there are various fixed-focus lenses used in security systems on the market. However, most of the lenses on the market currently have low academic performance indicators, and most of them are low-end products, which can only be adapted to low-pixel lenses. Ordinary video camera. At the same time, with the improvement of people's quality of life and safety awareness, the pursuit of camera imaging quality is getting higher and higher. At the same time, monitoring systems are used more and more frequently in night or low-light environments. It is difficult to obtain clear imaging in the environment, but the current products on the market are almost difficult to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00
CPCG02B13/001G02B13/0055
Inventor 杨樟洪刘任重张荣曜张世忠
Owner 福建福光光电科技有限公司
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