Sensing method and system for fresnel lens
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 29, 2015
Grant Date -
Nov 21, 2013
app pub date -
Jul 7, 2011
filing date -
Jan 6, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A sensing method and system for Fresnel lenses are disclosed, the system including a first Fresnel lens unit for sensing the signal of a target object crossing a first boundary of a sensing area, a second Fresnel lens unit for sensing the signal of a target object crossing a second boundary of the sensing area, a third Fresnel lens unit for sensing the signal of a target object crossing a third boundary of the sensing area, and a sensing unit for receiving and processing the sensed signals of the Fresnel lens units. The first and second Fresnel lens units are arranged on two sides of the third Fresnel lens unit. Furthermore, it is possible to add more Fresnel lens units above, below or around the Fresnel lens units. By monitoring the boundaries of the sensing area, the sensing method and system for the Fresnel lenses improve the insufficiency of the sensing area, reduce cost and save power consumption.
First Claim
Family
International Classification(s)
- H01J:ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- F21V:FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES....
- G01J:MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTE....
- G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- F21S:NON-PORTABLE LIGHTING DEVICES OR SYSTEMS THEREOF
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
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