Optical measuring device

Optics: measuring and testing – Photometers

Reexamination Certificate

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Details

C356S215000

Reexamination Certificate

active

11737827

ABSTRACT:
An optical measuring device according to the present invention includes: a plane mirror (3), which has a central opening that functions as either a light entering window or a light source fitting hole (5) and an observation window6′ that enables a photodetector (6) to take measurements; and an integrating hemisphere (2), which has its center of radius of curvature defined within the central opening of the plane mirror (3) and of which the inner wall surface functions as a light diffuse reflective surface (1). The plane mirror (3) and the integrating hemisphere (2) form an integrating space inside.

REFERENCES:
patent: 3916690 (1975-11-01), Brandli
patent: 4601576 (1986-07-01), Galbraith
patent: 4740708 (1988-04-01), Batchelder
patent: 5420540 (1995-05-01), Butler
patent: 5430540 (1995-07-01), Ohkubo
patent: 60-142238 (1985-07-01), None
patent: 5-231931 (1993-09-01), None
patent: 6-167388 (1994-06-01), None
patent: 7-146174 (1995-06-01), None
patent: 2000-258246 (2000-09-01), None
International Search Report for parent Application No. PCT/JP2006/307776 mailed Jul. 18, 2006.

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