Light source apparatus equipped with a GaN type semiconductor laser, a method of eliminating stray light, and an image forming apparatus
AssigneeFuji Photo Film Co., Ltd.
InventorToshiro Hayakawa
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Abstract
A light source apparatus equipped with a GaN type semiconductor laser, wherein deformation of the shape of the light spot due to fluctuations in the drive current of the light emitting element is prevented, is provided. A light source apparatus equipped with a GaN type semiconductor laser is provided with a slit panel or other spatial filter for eliminating stray light, which amounts to 20% or less of the total output occurring when the GaN type semiconductor laser is driven at maximum output, from the light emitted from the GaN type semiconductor laser.
Claims9
A light source apparatus equipped with a GAN type semiconductor light emitting element, comprising
- a spatial filter for eliminating stray light from the light emitted from the GAN type semiconductor light emitting element, wherein
- said stray light amounts to 20% or less of the total output of the light emitted from said GAN type semiconductor light emitting element when said GaN type semiconductor laser is driven at the maximum output thereof.
A method of eliminating stray light comprising the step of
- eliminating, by use of a spatial filter, stray light from the light emitted from the light source apparatus equipped with a GAN type semiconductor light emitting element;
- wherein
- said stray light amounts to 20% or less of the total output of the light emitted from said GAN type semiconductor light emitting element when said GaN type semiconductor laser is driven at the maximum output thereof.
Dependencies are inferred from the claim text.