Television – Camera – system and detail – Optics
Patent
1995-02-21
1997-06-24
Garber, Wendy
Television
Camera, system and detail
Optics
356401, G01B 1100
Patent
active
056421648
ABSTRACT:
A light spot position measuring apparatus includes a television camera for capturing an image of an object to be measured and an image processing unit. At least two cylindrical lens surfaces are provided in addition to an objective lens of the television camera so as to convert a light spot included in the object to be measured into linear images intersecting each other. The linear images are projected onto an image pickup face of the television camera which produces a corresponding image data. The image processing unit, processes the image data to extract corresponding straight lines. The unit further derives an intersection point of the straight lines and determines a position of the light spot in terms of the derived intersection point. The cylindrical lens surfaces have their cylinder axes which intersect each other. When a pair of the cylindrical lens surfaces having their cylinder axes intersecting orthogonal to each other are provided, a cross-shaped linear image is obtained. The cylindrical lens surfaces may be formed on a single lens or on separate lenses, respectively.
REFERENCES:
patent: 4636080 (1987-01-01), Feldman
patent: 4830485 (1989-05-01), Penney et al.
patent: 4973152 (1990-11-01), Brunk
patent: 5335058 (1994-08-01), Eiju et al.
Garber Wendy
Kabushikikaisha Wacom
LandOfFree
Light spot position measuring apparatus having orthogonal cylind does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light spot position measuring apparatus having orthogonal cylind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light spot position measuring apparatus having orthogonal cylind will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-151935