Blanking device and projector having the same
AssigneeBenq Corporation
InventorTsung-Hsun Wu
Life of this patent
Estimating the term…
Abstract
The present invention is to provide a blanking device of projector, comprising a blanking piece having at least one transparent part such that by installing the blanking piece at the optical path of the projector, it is possible to blank the projection of the projector and block most of projecting light, while a small part of the projecting light may still pass through the transparent part of the projector and project out.
Claims14
A blanking device of a projector, the projector generating a projecting light passing through an optical path, the blanking device comprising:
- a blanking piece having at least a transparent part, arranged in the optical path and positioned at a lower portion of an effective projection zone;
- wherein the blanking piece blocks most of the projecting light in the optical path, and a part of the projecting light is projected through the transparent part.
A blanking device of a projector, the projector generating a projecting light passing through an optical path, the blanking device comprising:
- a blanking piece having at least a transparent part arranged in the optical path and pivotally arranged on a casing of the projector for flipping the blanking piece by taking a pivotal axis as a center;
- wherein the blanking piece blocks most of the projecting light in the optical path, and a part of the projecting light is projected through the transparent part.
A blanking device of a projector, the projector generating a projecting light passing through an optical path, the blanking device comprising:
- a blanking piece having at least a transparent part, arranged in the optical path and arranged on a casing of the projector in a way that the blanking piece is movable in a reciprocating manner;
- wherein the blanking piece blocks most of the projecting light in the optical path, and a part of the projecting light is projected through the transparent part.
A blanking device of a projector, the projector generating a projecting light passing through an optical path, the blanking device comprising:
- a blanking piece having at least a transparent part, arranged in the optical path and constructed by connecting a plurality of blanking pieces in series onto a fixing axis, and the plurality of blanking pieces can be flipped simultaneously to a predefined angle, such that the blanking device arranged in the optical path will deviate the direction of projecting light by changing the angle of the flipped plural blanking pieces;
- wherein the blanking piece blocks most of the projecting light in the optical path, and a part of the projecting light is projected through the transparent part.
Dependencies are inferred from the claim text.