Method and apparatus for selectively scanning for or aiming a si

Details Method and apparatus for selectively scanning for or aiming a si Method and apparatus for selectively scanning for or aiming a si

1994-03-01

1996-08-06

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359198, 359900, G02B 2608

Patent

active

055439543

ABSTRACT:
A selectable field of view device is disclosed which is capable of expanding the relatively narrow field of view of a camera to nearly spherical proportions. The device includes a pair of signal diverters, such as mirrors in the case of light signals, each mirror's reflective surface being parallel to the other's reflective surface, and each mirror being independently rotatable about an X-axis and a Y-axis respectively. Each axis passes through a central portion of its respective mirror with the Y-axis intersecting the X-axis and the X-axis being relatively centered within the field of view of the sensor. The mirrors may be driven by one or more motors. When one motor is used, a brake and idler arrangement provides for rotation of one mirror while the other mirror remains stationary relative to its respective axis. In addition, when one motor is used, the sensor is rotated by the motor via a drive belt such that the sensor rotates the same amount as does the mirror being rotated.

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patent: 5216550 (1993-06-01), Rudeen

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