Object orienting systems and systems and processes relating ther

Details Object orienting systems and systems and processes relating ther Object orienting systems and systems and processes relating ther

1989-07-17

1991-10-01

Wallace, Linda J.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

356364, 342147, 342364, 342386, 180168, 340727, 340901, 340988, 340995, 364443, 364449, G01C 100, G09G 106, G01S 1300

Patent

active

050527991

ABSTRACT:
A reference signal used for orienting an object has a beam of electromagnetic radiation with a first signal component that is a rotating component and also a second signalcomponent which is periodically generated when the first signal component is in a predetermined direction. The beam may be a linearly polarized laser light beam with a rotating plane of polarization, an unpolarized laser light beam with a rotating and shaped image of predetermined configuration, or a linearly polarized microwave beam with a rotating plane of polarization. The second signal component may be generated as a component of the beam bearing the first signal component or separately generated and propagated. Provisions are made for receiving and comparing the direction indicated by the reference signal with the direction of the object to be oriented and the information derived from the comparison is analyzed and processed to provide an output signal that useful in orienting the object. The orientation of video displays, vehicles and parts of vehicles are illustrated.

REFERENCES:
patent: 3764218 (1973-10-01), Schedewie
patent: 4053882 (1977-10-01), Van Etten
patent: 4484192 (1984-11-01), Seitz et al.
patent: 4520362 (1985-05-01), Charlot
patent: 4527155 (1985-07-01), Yamaki et al.
patent: 4660045 (1987-04-01), Clark
patent: 4771288 (1988-09-01), Johnson
patent: 4773018 (1988-09-01), Lundstrom
patent: 4815840 (1989-03-01), Benayad-Cherif

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