Thin schaukasten
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 12, 1981
Grant Date -
N/A
app pub date -
Nov 19, 1979
filing date -
Dec 1, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thin schaukasten which is composed of a diffusive transparent plate, a light homogenizing member, a fluorescent lamp and a reflection member and in which the light homogenizing member has a reflection pattern formed on a transparent support media to provide a distribution of transmission for preventing non-uniform luminous intensity on one surface of the diffusive transparent plate and the reflection member is disposed in such a manner as to reduce non-uniformity in luminous intensity on one surface of the light homogenizing member. A lighting circuit for the fluorescent lamp includes a frequency converter for preventing flicker when the fluorescent lamp is lit, and the lighting circuit is used in common to a plurality of fluorescent lamps.
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