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US 8,947,755 B2Granted
Optical scanning device and image display apparatus
AssigneeHitachi-LG Data Storage, Inc.
InventorsNobuhiro Konuma, Michio Hatagi
Life of this patent
Estimating the term…
Abstract
An optical scanning device includes a rotationally-moving mirror on which a reflection plane is provided in a rotationally-movable manner, and a sealing unit over which a light-transmissive cover is provided, a first plane of the light-transmissive cover, a second plane of the light-transmissive cover, and the reflection plane of the rotationally-moving mirror within a rotationally-moving range being non-parallel to each other, the first plane being on the opposite side to the side of the rotationally-moving mirror, the second plane being on the side of the rotationally-moving mirror.
Claims8
An optical scanning device, comprising:
- a rotationally-moving mirror on which a reflection plane for reflecting light is provided in a rotationally-movable manner;
- and
- a sealing unit for sealing said rotationally-moving mirror in its inside, wherein
- a light-transmissive cover is provided on side of said sealing unit from which said light is entering said rotationally-moving mirror, said light-transmissive cover being formed of a light-transmissive material,
- a first plane of said light-transmissive cover, a second plane of said light-transmissive cover, and said reflection plane of said rotationally-moving mirror within a rotationally-moving range being non-parallel to each other,
- said first plane being on opposite side to side of said light-transmissive cover on which said rotationally-moving mirror is provided, said second plane being on said side of said light-transmissive cover on which said rotationally-moving mirror is provided,
- said first plane and said second plane being provided so that a first reflected light and a second reflected light reach areas that are different from an image-projected area onto which an image is projected by a third reflected light,
- said first reflected light being caused to occur such that a partial light of light that is entering said first plane is reflected by said first plane, and leaves for outside of said optical scanning device,
- said second reflected light being caused to occur such that a partial light of light that has passed through said first plane is reflected by said second plane, and leaves for said outside of said optical scanning device,
- said third reflected light being caused to occur such that light that has passed through said second plane is reflected by said reflection plane of said rotationally-moving mirror, and leaves for said outside of said optical scanning device.
7 more elements
An image display apparatus, comprising:
- a light-source unit for emitting light;
- and
- an optical scanning unit for reflecting said light emitted from said light-source unit, and scanning said light toward an external display apparatus, wherein
- said optical scanning unit comprises
- a rotationally-moving mirror on which a reflection plane for reflecting said light is provided in a rotationally-movable manner;
- and
- a sealing unit for sealing said rotationally-moving mirror in its inside,
- a light-transmissive cover being provided on side of said sealing unit from which said light is entering said rotationally-moving mirror, said light-transmissive cover being formed of a light-transmissive material,
- a first plane of said light-transmissive cover, a second plane of said light-transmissive cover, and said reflection plane of said rotationally-moving mirror within a rotationally-moving range being non-parallel to each other,
- said first plane being on opposite side to side of said light-transmissive cover on which said rotationally-moving mirror is provided, said second plane being on said side of said light-transmissive cover on which said rotationally-moving mirror is provided,
- said first plane and said second plane being provided so that a first reflected light and a second reflected light reach areas that are different from an image-projected area onto which an image is projected by a third reflected light,
- said first reflected light being caused to occur such that a partial light of light that is entering said first plane is reflected by said first plane, and leaves for outside of said optical scanning unit,
- said second reflected light being caused to occur such that a partial light of light that has passed through said first plane is reflected by said second plane, and leaves for said outside of said optical scanning unit,
- said third reflected light being caused to occur such that light that has passed through said second plane is reflected by said reflection plane of said rotationally-moving mirror, and leaves for said outside of said optical scanning unit.
11 more elements
Dependencies are inferred from the claim text.