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

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...

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.

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