Light source device, projection device using same, and fluorescence excitation device
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsRYO HASEYAMA, TOMOYA SUGITA
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Abstract
In a light source device, and a projection device and a fluorescence excitation device using the same, a light beam emitted from a semiconductor laser is focused at a prescribed focusing position after an aspect ratio of the light beam has been adjusted, by which a spot diameter at the focusing position is reduced. Light source device includes: semiconductor laser; beam shaping lens that adjusts an aspect ratio of light beam emitted from semiconductor laser; and condenser lens that focuses light beam passing through beam shaping lens on prescribed focusing position, wherein beam shaping lens is a cylindrical lens having negative power with respect to a slow axis direction of incident light beam.
Claims5
A light source device comprising:
- a semiconductor laser;
- a beam shaping lens that adjusts an aspect ratio of a light beam emitted from the semiconductor laser and transmits the light beam;
- and
- a condenser lens that focuses the light beam passing through the beam shaping lens on a prescribed focusing position, wherein the beam shaping lens is a cylindrical lens having negative power with respect to a slow axis direction of the light beam.
Dependencies are inferred from the claim text.