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US 2006/0077856 A1Published application
Optical information recording apparatus and optical information reproducing apparatus
AssigneeOptware Corporation
InventorKatsumi Mizunoe
Life of this patent
Estimating the term…
Abstract
Provided are a first moving unit 2a which, as an unit, moves an objective lens 23 and a relay lens 19 on the objective lens side out of a pair of relay lenses to an irradiation position of a recording medium 51, and a second moving unit 2b which moves a pair of reflectors 15, 17 as a unit.
Claims4
An optical information recording apparatus utilizing holography, comprising;
- a light source,
- a spatial light modulator to generate information light carrying information in light from said light source, a reference light generating means for generating reference light from said light from said light source, and an objective lens for irradiating said information light and said reference light to a recording medium,
- a pair of relay lenses which are disposed between said spatial light modulator and said objective lens,
- a pair of reflectors whose reflective planes mutually-perpendicular, which are disposed between said pair of relay lenses,
- a first moving unit which having said objective lens and a relay lens on said objective lens side of said pair of relay lenses as a unit, moves to an irradiation position of said recording medium, and
- a second moving unit which having said pair of reflectors as a unit.
3 more elements
An optical information reproducing apparatus utilizing holography, comprising;
- a light source, a reference light generating means for generating reference light from light from said light source,
- an objective lens which irradiates said reference light to a recording medium and to which reproduction light generated from said recording medium makes incidence,
- a detecting means for detecting said reproduction light,
- a pair of relay lenses which are disposed between said objective lens and said detecting means,
- a pair of reflectors whose reflective planes mutually-perpendicular, which are disposed between said pair of relay lenses,
- a first moving unit moves said objective lens and a relay lens on said objective lens side of said pair of relay lenses to an irradiation position of said recording medium, and
- a second moving unit which having said pair of reflectors as a unit.
4 more elements
Dependencies are inferred from the claim text.