Four-spectrum-in-one spectral beam split structure

A spectroscopic and spectral technology, applied in the field of photoelectric detection, can solve the problem of having all 4 optical spectrum bands, etc., to achieve the effect of improving the optical imaging quality of the system, reducing the external size, and shorting the optical path.

Inactive Publication Date: 2019-07-19
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

At present, there are many studies on multispectral optical systems at home and abroad, but in order to reduce the difficulty, multiple optical systems are generally adopted in the form of independent structures; Spectrum all owned

Method used

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  • Four-spectrum-in-one spectral beam split structure

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The present invention is a "four-light-in-one" spectral light-splitting structure, such as figure 1 shown. Concretely consists of three parts. The first part is composed of primary mirror 3 and secondary mirror 1 to form the first imaging; the second part is composed of the first dichroic mirror 2, the third dichroic mirror 4, the second dichroic mirror 11 and the third reflecting mirror 5, the second dichroic mirror Four reflection mirrors 7, the first reflection mirror 10, the second reflection mirror 15 are made up, mainly carry out spectral light splitting and light path refraction; The third part is formed by each spectral section post-imaging optical structure (comprising long-wave objective lens group 6, medium-wave objective lens group 8 , near-infrared objective lens group 13, collimator lens group 14, and visible light obje...

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Abstract

The invention discloses a four-spectrum-in-one spectral beam split structure. The structure is used for imaging four spectral bands of visible light, near infrared, medium wave infrared and long waveinfrared of a remote target on corresponding detectors at the same time, thereby realizing reliable detection and sufficient identification of the target. A whole light path is composed of three parts. A main optical system carries out first-time imaging. Dichroic mirrors and reflecting mirrors carry out spectral beam split and light path reflection. A post-imaging optical structure of each spectral band realizes secondary imaging of each spectral band. According to the structure, beam split mode and structure layout of the four spectral bands is realized. The structure is compact in structure, mature in coating technology and high in beam split efficiency. The structure is characterized by that each spectral band of a system is high in optical transmittance, imaging quality is high, and the system is easy to maintain.

Description

technical field [0001] The invention belongs to the field of photoelectric detection, and in particular relates to a "four-light-in-one" spectrum splitting structure. Background technique [0002] In the field of range photometry, in order to ensure reliable detection and full recognition of long-distance targets, a common large-aperture primary optical system is proposed to ensure detection capabilities and high-resolution imaging, using visible light, near-infrared, mid-wave infrared, and long-wave infrared Multi-spectral joint detection to ensure the technical requirements of reliable detection and target identification. For the optical system that shares the primary mirror and has four optical spectrum bands of visible, near-infrared, medium-wave infrared, and long-wave infrared for simultaneous imaging and detection, it is called a "four-light-in-one" optical system. In the structural space of the limited pitch and rotation of the shooting range optical measurement equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/10G02B17/02G02B17/06
CPCG02B17/023G02B17/06G02B27/1006
Inventor 杜俊峰周建伟张殷华王中科温正明
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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