Wide Light Dynamic Range Wide Spectrum Camera Lens

Abstract

The invention relates to a wide-light dynamic range and wide-spectrum camera lens, which includes a lens barrel and an optical system arranged in the lens barrel. The optical system includes a variable diaphragm A and a lens group B arranged in sequence along the incident direction of light from left to right. , mirror group C, mirror group D, dimming group E, variable diaphragm A is the variable diaphragm, mirror group B is biconvex lens B‑1, mirror group C is positive crescent lens C‑1 and biconcave lens C‑2 Closely bonded group, lens group D is biconvex lens D‑1, dimming group E includes variable optical density disk E‑1, variable optical density disk E‑2, variable optical density disk E‑1, variable optical density The transmittance of disc E-2 is evenly changed from 99% to 0.99%. The present invention adjusts the transmittance of the optical system through the light adjustment group to prevent the bright areas of the image from becoming white due to overexposure, and the dark areas from becoming black due to underexposure. , In the case of blurred image quality, it has the ability to adapt to large light dynamic range.

Description

technical field [0001] The invention relates to a wide-spectrum camera lens with a wide optical dynamic range. Background technique [0002] Optical dynamic range refers to the ability of the camera to adapt to the light reflection of the scene in the shooting scene, specifically referring to the range of brightness and color temperature changes. When high-brightness areas illuminated by strong light sources and relatively low-brightness areas such as shadows and backlights exist in the image at the same time, the image output by the camera will appear that the bright areas will become white due to overexposure, while the dark areas will become black due to underexposure. Seriously affect image quality. The camera is limited in its performance of the brightest and darkest areas in the same scene, and this limitation manifests itself in insufficient dynamic range. The optical dynamic range of the existing conventional camera lens is usually adjusted by the aperture. By clos...

AI Technical Summary

Problems solved by technology

The optical dynamic range of the existing conventional camera lens is usually adjusted by the aperture. By closing the aperture large or small, the light intake ability of the lens is adjusted. The dimming multiple is low and the optical dynamic range is small. The aperture reduces the limit resolution of the system, seriously restricting the monitoring ability of the system

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