Method and apparatus for direct image pick-up of granular...

Details Method and apparatus for direct image pick-up of granular... Method and apparatus for direct image pick-up of granular...

2007-01-16

2007-01-16

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

C359S009000

Reexamination Certificate

active

10737336

ABSTRACT:
A granular speck pattern is generated by a reflecting laser beam as an object to be measured is irradiated with a laser beam. This granular speck pattern is directly picked up as an image index by a line sensor. An A/D converter converts an analog signal supplied from the line sensor to a digital signal, and a processing unit calculates the amount of movement of the object on the basis of movement of a pixel interval of the granular speck pattern. A display device displays the amount of movement calculated by said processing unit.

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