Stigmatic optical device

Details Stigmatic optical device Stigmatic optical device

H - Electricity

01

S

345/56, 352/32.2

H01S 3/10 (2006.01) G02B 27/09 (2006.01) G11B 7/12 (2006.01) G11B 7/135 (2006.01) G11B 17/00 (2006.01)

Patent

CA 1168745

Abstract of the Disclosure An optical device for forming a stigmatic image of a laser source positioned at a predetermined point is intended to illuminate a reflecting surface while also pro- viding a separation between the beam emerging from the source and the beam reflected from the surface. The device comprises a cube placed against a converging lens, the dimensions of the assembly thus formed being such that the cube face remote from the lens passes through a Weierstrass point of the spherical refracting surface formed by the lens. The laser source is positioned at the Weierstrass point. The cube is formed by two prisms cemented together, the interface being treated so as to have a polarization separating effect. -1-

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