Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2011-04-26
2011-04-26
Ko, Tony (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S234000
Reexamination Certificate
active
07932484
ABSTRACT:
A laser transmitter has a transmitter housing and a laser source in the housing. A gimbal support arrangement supports the laser source in the housing and includes a gimbal motor arrangement for moving the gimbal support arrangement and said laser source in said housing. A gimbal motor drive circuit actuates the gimbal motor arrangement to cause the gimbal support arrangement to move in said housing. A plurality of optical proximity sensors sense the orientation of said gimbal support arrangement to the interior of said housing. By this arrangement, damage to the transmitter is prevented.
REFERENCES:
patent: 7107168 (2006-09-01), Oystol et al.
patent: 7205527 (2007-04-01), Li et al.
patent: 7304296 (2007-12-01), Mills et al.
Dinsmore & Shohl LLP
Ko Tony
Trimble Navigation Limited
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