Invention Grant
US06516151B2 Camera projected viewfinder 失效
相机投影取景器

  • Patent Title: Camera projected viewfinder
  • Patent Title (中): 相机投影取景器
  • Application No.: US09780368
    Application Date: 2001-02-12
  • Publication No.: US06516151B2
    Publication Date: 2003-02-04
  • Inventor: Maurizio Pilu
  • Applicant: Maurizio Pilu
  • Priority: GB0005024 20000303
  • Main IPC: G03B1300
  • IPC: G03B1300
Camera projected viewfinder
Abstract:
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.
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