Optical position detecting device
AssigneeFujitsu Limited
InventorsYasuhide Iwamoto, Satoshi Sano, Fumihiko Nakazawa
Life of this patent
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Abstract
An optical position detecting device includes side frames on three sides, which are composed of slide parts and guide parts for guiding the slide parts and provided with light retro-reflectors; and a side frame on one side, which is composed of a slide part and a guide part for guiding the slide part and incorporates two optical units including light emitting elements, polygon mirrors and light receiving elements, and the optical position detecting device is externally fixed to a display apparatus by moving the slide parts.
Claims6
An optical position detecting device for optically detecting a position in a predetermined region indicated by an indicator, said optical position detecting device being characterized by comprising:
- a light retro-reflector;
- at least two optical transceivers, each including an optical scanning unit for angularly scanning light in a plane substantially parallel to the predetermined region and a light receiving unit for receiving reflected light from a portion of said light retro-reflector irradiated with the scanning light;
- and a mounting member for mounting said light retro-reflector and said optical transceivers on an apparatus having the predetermined region so that said retro-reflector and said optical transceivers are positioned outside of the predetermined region.
The optical position detecting device as set forth in claim
- wherein said mounting member comprises a position adjusting member for adjusting mounting positions of said light retro-reflector and said optical transceivers:
An optical position detecting device, mounted on an apparatus having a predetermined region, for optically detecting a position in the predetermined region indicated by an indicator, said optical position detecting device being characterized by comprising:
- a light retro-reflector provided on an external edge of the predetermined region of said apparatus;
- at least two optical transceivers, each including an optical scanning unit for angularly scanning light in a plane substantially parallel to the predetermined region and a light receiving unit for receiving reflected light from a portion of said light retro-reflector irradiated with the scanning light;
- and a mounting member for mounting said optical transceivers on said apparatus so that said optical transceivers are positioned outside of the predetermined region.
Dependencies are inferred from the claim text.