Patent
Recording optical system
Kazuo Minoura,Takashi Kitamura +1 more
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TLDR
In this paper, a recording optical system consisting of a semi-conductor laser of substantially single mode as the light source, an objective lens of which the focal point is located substantially at the beam divergent position of said semi conductor laser in a plane perpendicular to the junction plane thereof, an afocal cylindrical lens composed of an element having a refractive power only in the plane parallel to said junction plane, an imaging lens, an aperture limiting the beam entering said imaging lens and a photosensitive medium positioned in the vicinity of the imaging lens.Abstract:
A recording optical system comprising a semi-conductor laser of substantially single mode as the light source, an objective lens of which the focal point is located substantially at the beam divergent position of said semi-conductor laser in a plane perpendicular to the junction plane thereof, an afocal cylindrical lens composed of an element having a refractive power only in a plane parallel to said junction plane, an imaging lens, an aperture limiting the beam entering said imaging lens, and a photosensitive medium positioned in the vicinity of the focal point of said imaging lens.read more
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Optical scanning apparatus having an array of light sources
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Optical system capable of continuously varying the diameter of a beam spot
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TL;DR: An optical system having a light source, a light receiving medium receiving the light beam from the light source portion, and a light condensing optical system for condensing the light beacon from the source portion as a beam spot on the receiving medium is described in this paper.
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References
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Scanning light synchronization system
TL;DR: In this paper, a collimated light beam is diverted by a multi-faceted rotating mirror in a scanning direction, and a light detector provides an output signal indicating the real time position of the scanning beam traversing the utilization path.
Patent
Light beam scanning device
TL;DR: In this paper, a prism anamorphic optical system is disposed in the path of deflected beam from a rotatable polygonal mirror or a galvano-mirror.
Patent
Hetero-structure injection laser
TL;DR: In this paper, a semiconductor laser has a structure such that a narrow strip mesa is formed above a laser active layer in a hetero-structure crystal so that it can generate a laser beam of improved optical properties.