Drive control method for galvano-scanner

Details Drive control method for galvano-scanner Drive control method for galvano-scanner

2011-07-19

2011-07-19

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S199100, C359S900000

Reexamination Certificate

active

07982933

ABSTRACT:
A galvano-scanner system (1) has a position-controlling microcomputer (31) mounted on a scanner driver (3) of a galvano scanner (2), wherein a position detection signals outputted from a positional sensor (14) of the galvano-scanner (2) are sampled, the current position of the galvano-scanner (2) is updated on the basis of sampling results, when movement distance amount command data are input, the movement distance amount command data are converted to an address change amount for the galvano-scanner (2), the address change amount is added to the current position to obtain a movement destination address. The movement destination address is converted to an analog position command and supplied to a drive circuit (33). The drive circuit (33) generates position command voltage corresponding to the analog position command and causes to move the galvano scanner (2) by that movement distance. The galvano-scanner (2) can be controlled in a simple manner to move from a current position to an arbitrary position.

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International Search Report for corresponding application PCT/JP2007/000586, completed Aug. 28, 2007.

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