Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2006-09-26
2006-09-26
Menefee, James (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S046010
Reexamination Certificate
active
07113530
ABSTRACT:
In order to obtain a visually high quality image with excellent sharpness using a silver halide photosensitive material, it is necessary to reduce the ratio of EL light in the light output from a GaN based laser diode to 20% or less. For example, when the light intensity measured on a sheet of photosensitive paper is 0.05 mW, the thickness of a waveguide is 3 nm and the width of the waveguide is 3 μm, this condition is satisfied with a length of a resonator being 1 mm or less. In other words, a waveguide width W1and a resonator length L are set such that the product of the waveguide width W1and the resonator length L (W1·L) becomes 0.003 mm2or less. This reduces the output ratio of the EL light, and a high quality image with excellent sharpness can be obtained when a silver halide photosensitive material is exposed.
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Hayakawa Toshiro
Matsumoto Kenji
Fuji Photo Film Co. , Ltd.
Menefee James
Nichia Corporation
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