Semiconductor laser optical system

Abstract

PURPOSE:To compensate the astigmatic difference of a semiconductor laser without increasing the number of parts by arranging the semiconductor laser and a collimator lens so that the astigmatic difference is canceled by the astigmatism of the collimator lens. CONSTITUTION:An example of a semiconductor laser optical system is shown in figure, where DELTAM and DELTAS are astigmatisms viewed from the right side of the collimator lens 2 and meridional image surface curvature and sagittal image surface curvature, respectively. Namely, the semiconductor laser 1 is provided so that the distance between DELTAM and DELTAS is equal to the length from M to S.

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Cited By (9)

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    JP-H057690-B2January 29, 1993Matsushita Electric Ind Co Ltd
    JP-S60229007-ANovember 14, 1985Matsushita Electric Ind Co LtdForming method of anisotropic light spot
    JP-S61109015-AMay 27, 1986Asahi Optical Co LtdImage forming optical system for laser light
    JP-S6180209-AApril 23, 1986Furukawa Electric Co Ltd:ThePhotocoupler between light source and optical fiber
    JP-S62132247-AJune 15, 1987Mitsubishi Electric CorpOptical head device
    JP-S63316822-ADecember 26, 1988Fuji Photo Film Co LtdSemiconductor laser optical device
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