Optics: measuring and testing – Lens or reflective image former testing
Reexamination Certificate
2007-07-17
2007-07-17
Pham, Hoa Q. (Department: 2886)
Optics: measuring and testing
Lens or reflective image former testing
C356S127000
Reexamination Certificate
active
11114116
ABSTRACT:
A lens meter excellent in operability during alignment capable of informing in which direction a subject lens should be moved. A lens meter has a measurement optical system having an optical axis, a light source projecting a light bundle onto the lens, and a photo-sensor photo-receiving the bundle, a part which obtains the optical characteristics from a photo-receiving result, a device which detects an alignment condition of a desired position or region with the axis, a part which displays an alignment screen, and a part which provides fixed display of a target mark indicating a measurement position or region and provides movable display of a lens mark representing the lens and a guide mark indicating an alignment target position or region, where a movement direction of the lens relative to the axis coincides with movement directions of the lens mark and the guide mark relative to the target mark.
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Kajino Tadashi
Kobayashi Toshiya
Nidek Co. Ltd.
Pham Hoa Q.
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