Self-adaptive lens applied to coaxial reflective optical system

Abstract

The invention relates to a self-adaptive lens applied to a coaxial reflection type optical system. The self-adaptive lens comprises a primary mirror, a secondary mirror, a secondary mirror support rodand a primary mirror support structure which are made of SIC materials. A prism is arranged on the primary mirror support structure. The self-adaptive lens also includes a secondary mirror support seat connected with the primary mirror support structure through the split type secondary mirror support rod. The secondary mirror support seat adopts a carbon fiber composite material with a linear expansion coefficient matching that of the SIC material. The lens has better thermal stability; a problem of thermal sensitivity of a reflective lens is thoroughly solved; and the athermalization designof the lens is realized. No weak link exists, the overall mechanical stability is very high, and the unit density is only 3.5 g / mm < 3 >; a TC4 or 4J32 flexible transition link appearing in the traditional reflection lens is omitted, the benchmark of the whole system is unified, accumulated errors are reduced, the allowable error amount of a single piece is increased, the complexity of installation and adjustment is reduced, the installation and adjustment efficiency is improved, namely, the production time is shortened, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of space cameras, and in particular relates to an adaptive lens applied to a coaxial reflection optical system. Background technique [0002] At present, due to the limitations in the production process of large-diameter lenses, the long focal length and large-diameter optical systems on aerospace and ground tracking and mapping equipment all use reflective optical systems. However, the front reflection optical path in the reflective optical system, that is, the reflective optical lens, has the disadvantages of being sensitive to thermal influence, high mechanical conditions, complicated installation and high precision adjustment, which also determines the high price of the reflective optical lens. The high precision of assembly and adjustment and the complicated process of assembly and adjustment also make the processing cycle of the reflective optical lens very long. The above problems are the main reasons...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an adaptive lens applied to a coaxial reflective optical system with good thermal and force adaptability, so as to overcome the narrow range of thermal adaptability, poor mechanical stability, complicated assembly and adjustment of devices in this technical field. Disadvantages of low efficiency

Images