Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Laser scanner with parabolic collector










Image Number 6 for United States Patent #6765664.

An improved laser scanning apparatus (46) for determining frame or unibody alignment or misalignment of a vehicle (40) is provided, which includes a laser assembly (54), a pair of rotatable mirror assemblies (56,58) and laser detectors (114,116) located within an enclosed housing (50,52). The laser assembly (54) has an upper pair of lasers (122,126) located in known, spaced relationship above a lower pair of lasers (124,128); detector assemblies (114, 116) are also provided including substantially parabolic reflective surfaces (118a, 120a) with detectors (114a, 116a) disposed substantially at the focal point of the surfaces (118a, 120a). The apparatus (46) is used in conjunction with a plurality of individually coded reflective targets (44) which are suspended from known reference points on the vehicle (40). In use, the laser assembly (54) in conjunction with the mirror assemblies (56,58) directs upper and lower laser beams through 360 degree scans to impinge on the targets (44); laser radiation reflected from the targets (44) is detected by the detector assemblies (114, 116), allowing trigonometric calculation of target positions using information derived from the scans of the upper and lower beams. In this way, a determination can be made if any of the targets (44) are out of plumb (i.e., not truly vertical). Preferably, the housing (50,52) includes a pair of elongated, laser-transparent panels (88, 90) and is effectively sealed to minimize contamination of the apparatus (46). The provision of parabolic detection assemblies 114, 116 increases the signal-to-noise ratio for the apparatus (46).








 
 
  Recently Added Patents
Light receiving element with offset absorbing layer
Data transfer device and data transfer method
Crowd validated internet document witnessing system
Rear bumper for an automobile
Dynamic data caches, decoders and decoding methods
Fixing device and image forming apparatus
Photoacoustic joulemeter utilizing beam deflection technique
  Randomly Featured Patents
MOS-transistor on SOI substrate with source via
Bag expander and bag containing same
Combined catalytic converter and muffler
Colored coating and formulation
Method and apparatus for removing or reinstalling riser pipes of a riser bundle
Process control apparatus for optimal adaptation to a disturbance
Pager Holster
Colon irrigator for use within a toilet basin
Method and circuit for built in self test of phase locked loops
Blood pressure measuring device having adaptive cuff deflation rate