METHOD OF ADJUSTING DOUBLE-MIRROR CENTRED OPTICAL SYSTEMS Russian patent published in 2009 - IPC G01B11/27 G02B27/62 

FIELD: physics; optics.

SUBSTANCE: method involves formation of autocollimation images of a monochromatic point light source lying at the optical axis of the system using three auxiliary axial synthetic holograms, which are made in line on a common substrate and lying between mirror elements of the system being adjusted. The light source is place in front of the substrate with the hologram on the side of the first mirror element. The first hologram is a reflection hologram and forms an autocollimating image of the light source. The second hologram is a transmission hologram and forms an autocollimating image of the light source together with the second mirror element. The third hologram is a reflection hologram and forms an autocollimating image of the light source together with the first mirror element. Distribution of radii of the annular zones in the structures of these holograms is defined by conditions given in the formula of invention.

EFFECT: increased reliability and accuracy of adjusting double-mirror centred optical systems and widening of their range due to reliable and accurate alignment of axes of symmetry of mirror surfaces of the second order or higher, including off-axis mirrors, as well as high accuracy of setting up an air gap between peaks of mirror surfaces.

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