FIELD: physics, optics.
SUBSTANCE: compact device for recording picture holograms comprises a laser, a beam splitter and signal and reference wave channels. The output part of the reference wave channel is fitted with a monolithic optical element in the form of a cylinder made of optically transparent material with a reflecting outer surface. A diffractive axicon is deposited on the input end surface of said cylinder. A blocking diaphragm is deposited on the opposite end surface of the cylinder.
EFFECT: high reliability by avoiding the need for adjustment.
2 dwg
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|---|---|---|---|
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