DEVICE TO ALIGN TWO-MIRROR ALIGNED OPTICAL SYSTEM Russian patent published in 2012 - IPC G01B11/27 G02B27/62 

FIELD: measurement equipment.

SUBSTANCE: invention relates to control and measurement equipment and is aimed at increasing reliability and efficiency of monitoring alignment of two-mirror aligned optical systems in process of their assembly and alignment, and also in the standard mode, in process of their operation in observatories, which is provided due to the fact that the device comprises a monochromatic source of light, a collimator and a beam splitter to form reference and working branches. The working branch comprises a focusing lens, two axial reflecting adjusting synthesized holograms arranged on the reflecting surface of the secondary mirror, preferably in its edge zone, coaxially with its optical axis. Hologram apertures may be arranged in the form of circular rings or as pairs of diametrically opposite parts of appropriate circular rings, turned to each other at a certain angle. In the central hole of the main mirror there is a membrane installed with a hole, the centre of which is matched with the top of the reflecting surface of this mirror and the focus of the focusing lens. The reference branch comprises a flat reference mirror perpendicularly to light beams spreading from the beam splitter, which may be arranged in the form of a prism-cube, the face surface of which with a reflecting coating applied on it at the side of the reference branch is a flat reference mirror. In the recording part there is the second focusing lens, a position-sensitive photodetector device with an outlet to a unit of information display and processing.

EFFECT: increased reliability and efficiency of alignment of two-mirror aligned optical systems due to development of a single optical element with high accuracy, which is not disturbed in time, at the same time the number of elements is reduced, and the number of monitored sections is reduced down to one.

5 cl, 7 dwg