Optical instrument comprising an entrance cavity in which a...

Details Optical instrument comprising an entrance cavity in which a... Optical instrument comprising an entrance cavity in which a...

2006-11-27

2010-12-21

Consilvio, Mark (Department: 2872)

Optical: systems and elements

Compound lens system

Telescope

C359S512000, C244S171800

Reexamination Certificate

active

07855832

ABSTRACT:
The invention relates to an optical instrument (1) comprising at least one mirror called the primary mirror (3), placed in a cavity (2) and comprising an active face capable of being subjected to instantaneous variations of the incident radiative flux. According to the invention, the cavity (2) comprises a rigid internal casing (20) around the mirror consisting of a material having a thermal inertia so as to damp the instantaneous variations of the incident radiative flux thereby making it possible to limit the temperature fluctuations of this cavity and, consequently, the temperature fluctuations of the mirror. The invention applies to the space field.

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