Optical light splitting device for receiving three wave bands through common window and application thereof

Abstract

The invention relates to an optical light splitting device for receiving three wave bands through a common window and application of the optical light splitting device in handheld, vehicle-mounted andairborne distance measurement camera shooting white light observation equipment and distance measurement double-path camera shooting equipment. The device comprises a common lens group, a composite prism, a beam splitter prism, an avalanche transistor detector, a near-infrared detector and a visible light detector. External light passes through the common lens group and is refracted into two paths of light by the composite prism, wherein one path of light enters the avalanche transistor detector, and the other path of light enters the beam splitter prism and then is refracted into two paths of light, and the two paths of light respectively enter the near-infrared detector and the visible light detector for imaging. The device is simple in structure, small in size and light in weight, achieves the three functions of distance measurement, visible light imaging and near-infrared light imaging at the same time, and is wide in application range and high in adaptability.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to an optical spectroscopic device for receiving three bands through a common window and an application thereof. Background technique [0002] With the advancement of technology, multi-functional camera products have higher and higher requirements on function and integration, and multi-functional integrated miniaturized devices play an increasingly important role in practical applications. Traditional camera products and ranging products often have large differences in structure and function. The two have completely different lens structures and optical path systems and are not compatible with each other. Larger obstacle. A simple solution is to directly assemble the traditional camera product and the distance measuring product on the same housing. The two are independent of each other, do not interfere with each other, and perform their respective functions. However, such product...

AI Technical Summary

Problems solved by technology

Traditional camera products and ranging products often have large differences in structure and function. The two have completely different lens structures and optical path systems and are not compatible with each other. Larger obstacle

A simple solution is to directly assemble the traditional camera product and the distance measuring product on the same housing. The two are independent of each other, do not interfere with each other, and perform their respective functions. However, such products are often bulky and heavy. And it does not meet the development trend of portability and lightweight

[0003] In addition, existing ranging camera products often only have a single-channel camera function, and can only be used in environments with good lighting conditions, which greatly limits its application range

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