Controlling apparatus and controlling method of optical...

Details Controlling apparatus and controlling method of optical... Controlling apparatus and controlling method of optical...

2006-10-17

2006-10-17

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C385S017000, C385S018000, C385S052000

Reexamination Certificate

active

07122786

ABSTRACT:
A controlling apparatus and a controlling method of an optical switching device are capable of automatically correcting angle deviations of tilt-mirrors to thereby reduce an optical loss. To this end, such as in a three-dimension type optical switching device including a first mirror array and a second mirror array each arranged in a plane thereof with a plurality of tilt-mirrors, angles of reflection surfaces of which are controllable, the controlling apparatus branches a part of an optical signal reflected by the output side second tilt-mirror array, receives the branched light by an image sensor to thereby generate position information of the branched light, compares, by a control circuit, the position information with initial position information previously set corresponding to target values of the angles of the reflecting surfaces of the respective tilt-mirrors, to thereby detect an error in the arriving position of the optical signal, and correction controls the angles of the reflecting surfaces of the tilt-mirrors, based on the detected error.

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