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US 6,516,151 B2Granted
Camera projected viewfinder
AssigneeHewlett-Packard Company
InventorMaurizio Pilu
Life of this patent
Estimating the term…
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AssigneeHewlett-Packard Company
InventorMaurizio Pilu
Estimating the term…
The present invention relates to a camera (1) that projects a pattern of visible light (28) onto an object such as a document (10) to be photographed to indicate to a photographer the area of the object within view of the camera. The camera comprising image capture means (18), a lens (2) arranged to image the document (10) in an object plane onto the image capture means (18), an image framing projector (2,20,22) operable to project visible optical radiation (24,26) onto the object plane to indicate to a user of the camera (1) the bounds (28) of the document (10) imaged onto the image capture means (18), and a camera attitude sensor system (9,15) for sensing the attitude of the camera (1). The image framing projector (2,20,22) is operable in response to the attitude sensor system (9,15) to project the optical radiation (24,26) onto the object plane only when the attitude sensor system (9,15) senses that the camera (1) is oriented so that the optical radiation (24,26) will be projected downwards.
A camera comprising a detector, a lens arranged to image an object in an object plane onto the detector, a light projector operable to project visible optical radiation onto the object plane to indicate to a user of the camera the field of view imaged onto the detector, and a camera attitude sensor system for sensing the attitude of the camera, wherein the image framing projector is operable in response to the attitude sensor system to project the optical radiation onto the object plane only when the attitude sensor system senses that the camera is oriented so that the optical radiation will be projected downwards.
A camera as claimed in any preceding claim, in which the
Dependencies are inferred from the claim text.