Light source device
AssigneeSharp Kabushiki Kaisha
InventorsKOJI TAKAHASHI, KARL PETER WELNA
Life of this patent
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Abstract
[Object] External leakage of laser light can be prevented in a reflective type light source device. [Solution] Laser light excites a first surface (21) of a phosphor light-emitting section. (20), and a window portion (30) formed of a transparent member disposed spaced away from the first surface (21) is provided. A light leakage prevention portion (600), which inhibits the laser light reflected at the first surface (21) of the phosphor light-emitting section (20) from leaking to the outside through the window portion (30) is provided to part of the window portion (30).
Claims17
A light source device, comprising:
- a semiconductor laser unit;
- and a phosphor light-emitting section excited by laser light emitted from the semiconductor laser unit, wherein
- the laser light excites a first surface of the phosphor light-emitting section,
- a window portion formed of a transparent member is provided spaced away from the first surface, and
- a light leakage prevention portion, which inhibits the laser light reflected at the first surface of the phosphor light-emitting section from externally leaking through the window portion, is provided to part of the window portion.
A light source device, comprising:
- a semiconductor laser unit;
- and a phosphor light-emitting section excited by laser light emitted from the semiconductor laser unit, wherein
- the laser light excites a first surface of the phosphor light-emitting section,
- a window portion formed of a transparent member is provided spaced away from the first surface, and
- an absorption portion, which absorbs the laser light reflected at the first surface of the phosphor light-emitting section, is provided to part of the window portion.
A light source device, comprising:
- a semiconductor laser unit;
- and a phosphor light-emitting section excited by laser light emitted from the semiconductor laser unit, wherein
- the laser light excites a first surface of the phosphor light-emitting section,
- a window portion formed of a transparent member is provided spaced away from the first surface, and
- a reflecting portion, which reflects the laser light reflected at the first surface of the phosphor light-emitting section, is provided to part of the window portion.
A light source device, comprising:
- a semiconductor laser unit;
- and a phosphor light-emitting section excited by laser light emitted from the semiconductor laser unit, wherein
- the laser light excites a first surface of the phosphor light-emitting section,
- a window portion formed of a transparent member is provided spaced away from the first surface, and
- a light guide portion, which guides the laser light reflected at the first surface of the phosphor light-emitting section, is provided to part of the window portion.
A light source device, comprising:
- a semiconductor laser unit;
- and a phosphor light-emitting section excited by laser light emitted from the semiconductor laser unit, wherein
- the laser light excites a first surface of the phosphor light-emitting section,
- a window portion formed of a transparent member is provided spaced away from the first surface, and
- a scattering portion, which scatters the laser light reflected at the first surface of the phosphor light-emitting section, is provided to part of the window portion.
Dependencies are inferred from the claim text.