MIRROR LENS Russian patent published in 2019 - IPC G02B17/06 

Abstract RU 2690034 C1

FIELD: instrument engineering.

SUBSTANCE: lens can be used in optoelectronic devices with photodetectors of wide spectral range. Mirror lens comprises protective glass, annular segment of main mirror with convex spherical surface, aplanatic corrector in form of spherical annular mirror, matrix radiation receiver, aperture diaphragm located on convex spherical surface of primary mirror. Protective glass is made in the form of plane-parallel plate. Main mirror has the possibility of displacement along the optical axis and the following ratio is satisfied: ΔlPM=(0.001÷0.05)·f’lens, where ΔlPM is the magnitude of movement of the primary mirror along the optical axis; f'lens is focal distance of mirror lens.

EFFECT: simplification of technological and design execution with preservation of image quality at change of distance to the observed object.

1 cl, 1 dwg, 1 tbl

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RU 2 690 034 C1

Authors

Medvedev Aleksandr Vladimirovich

Grinkevich Aleksandr Vasilevich

Knyazeva Svetlana Nikolaevna

Dates

2019-05-30Published

2018-09-26Filed