Luminous flux measuring apparatus using an integrating hemisphere or an integrating quarter sphere
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 4, 1995
Grant Date -
N/A
app pub date -
Nov 8, 1993
filing date -
Nov 27, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A luminous flux measuring apparatus includes an integrating hemisphere which has a hemisphere shape and an inner wall. The inner wall has a light diffusing material applied thereto. A flat mirror is installed to cover the first opening of integrating hemisphere. A second opening is located at the center of the flat mirror and the window has the same configuration of longitudinal cross section of the illuminant to be measured. A light detector which has a light-intercepting window is located inside the integrating hemisphere. Finally, the flux measuring apparatus includes a means for holding the illuminant in the window of the mirror at the center of curvature of the integrating hemisphere.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully