Off-axis Newton type large-caliber collimator

By distributing optical elements in an off-axis Newtonian large-aperture collimator and utilizing support components and auxiliary mechanisms, the problem of balancing structural compactness, optical path stability, and ease of assembly and adjustment in existing large-aperture collimators has been solved, achieving both optical path stability and convenient adjustment.

CN122386491AActive Publication Date: 2026-07-14NANJING SIMITE OPTICAL INSTR
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Patent Information

Application Number
CN202610840656.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-11
Publication Date
2026-07-14
Estimated Expiration
2046-06-11

AI Technical Summary

Technical Problem

Existing collimators struggle to simultaneously achieve structural compactness, optical path stability, and ease of installation and adjustment in large-aperture, long-focal-length applications. This is especially true in scenarios requiring large apertures, flexible placement, enclosed anti-interference measures, and on-site calibration, where existing solutions often fail to meet these demands.

Method used

It employs an off-axis Newtonian-type large-diameter collimator, and forms a folding propagation path by distributing optical elements between the primary mirror chamber, secondary mirror chamber, and light guide tube. It also utilizes support components, buffer pads, damping pads, and auxiliary mechanisms to achieve optical path stability and convenient adjustment. Combined with a light shield and a closed chamber, it reduces external interference, and uses a pneumatic cylinder and integrating sphere to adjust the light path.

Benefits of technology

It realizes the folding and propagation path of the optical path inside the device, reduces the axial length occupied by the whole machine, improves the support stability and adjustment convenience of optical components, reduces the influence of external stray light and airflow disturbance, improves disassembly and assembly efficiency, and facilitates maintenance and replacement.

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Abstract

The invention relates to the field of optical instruments, and discloses an off-axis Newton type large-diameter collimator which comprises a base, a plurality of supporting assemblies are connected to the base, the supporting assemblies support a second primary mirror chamber, a first primary mirror chamber and a secondary mirror chamber which are located on the base, the second primary mirror chamber, the first primary mirror chamber and the secondary mirror chamber are sequentially connected, one side of the first primary mirror chamber is connected with a light guide cylinder, and the other side of the first primary mirror chamber is connected with a light source. A supporting plate is connected between the second primary mirror chamber and the first primary mirror chamber, a fourth lens and a first lens are arranged on the supporting plate, an adjusting seat connected with the first primary mirror chamber is arranged on one side of the light guide cylinder, and a third lens is connected to the adjusting seat. The axial occupied length of the whole machine is reduced while the arrangement requirement of the emergent direction is met, and meanwhile through cooperation of the supporting assembly, the buffering pad, the damping pad and the auxiliary mechanism, the main mirror chamber and the optical element have good supporting stability and adjustment convenience in the installation, fine adjustment and maintenance processes.
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