Optics: measuring and testing – Photometers
Reexamination Certificate
2008-01-08
2008-01-08
Chowdhury, Tarifur (Department: 2886)
Optics: measuring and testing
Photometers
C356S218000, C356S425000, C348S191000
Reexamination Certificate
active
07317520
ABSTRACT:
An apparatus for measuring brightness transmitted by a light-emitting display unit of a laser telescope and observed by the user's eyes comprises a focusing unit (11), a sensor unit (12), a processing unit (13) and a display unit (14). A method of measuring brightness includes the steps of: providing a constant color temperature to simulate the external light; providing a tool platform and locating the apparatus for measuring brightness and the laser telescope under test thereon; further providing a light-impermeable cover to cover the laser telescope and the apparatus for avoiding the external light interfering with the measurement of brightness; then turning on the laser telescope and enabling it to range; picking up the light of a reticle and a measured value transmitted from the light-emitting display unit by means of the apparatus for measuring brightness; and at last, displaying the measured value on the display unit of said apparatus for measuring brightness.
REFERENCES:
patent: 4247202 (1981-01-01), Failes
patent: 6329758 (2001-12-01), Salam
patent: 6788401 (2004-09-01), Kitabayashi et al.
patent: 2004/0105091 (2004-06-01), Zaidi et al.
patent: 2004/0201766 (2004-10-01), Funston et al.
Wang Chung-Wei
Yang Shih-Hsien
Asia Optical Co. Inc.
Chowdhury Tarifur
Pajoohi Tara S
LandOfFree
Method and apparatus for measuring brightness does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for measuring brightness, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring brightness will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2752579