Abstract

For reflective dividing of a laser beam and focusing in two spots with a fixed distance between, a Fresnel biprism is used. When there is a need for a more frequent change of distance between the spots, a new solution is proposed.

© 1990 Optical Society of America

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Figures (3)

Fig. 1
Fig. 1

Glass holder assembly.

Fig. 2
Fig. 2

Functional scheme.

Fig. 3
Fig. 3

Device for reflective dividing of a laser beam with adjustable distance between two focus spots and sliding surfaces (optional).

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