Portable handheld artificial light detector

Details Portable handheld artificial light detector Portable handheld artificial light detector

2007-10-30

2007-10-30

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S2140RC

Reexamination Certificate

active

10819518

ABSTRACT:
A portable, handheld artificial light detector distinguishes artificial light from sunlight and identifies low-frequency artificial light from high-frequency artificial light. Artificial light includes light from a lamp powered by an AC source. Low frequency light includes, for example, light produced by a magnetic luminaire ballast, while high frequency light includes light produced by an electronic luminaire ballast.

REFERENCES:
patent: 3940753 (1976-02-01), Muller
patent: 4079388 (1978-03-01), Takahama et al.
patent: 4220412 (1980-09-01), Shroyer et al.
patent: 4420686 (1983-12-01), Onoguchi et al.
patent: 4587459 (1986-05-01), Blake
patent: 4827119 (1989-05-01), Gaboury
patent: 5037198 (1991-08-01), Gaboury
patent: 5498865 (1996-03-01), Gaboury et al.
patent: 5586048 (1996-12-01), Coveley
patent: 5598000 (1997-01-01), Popat
patent: 5611918 (1997-03-01), Markham
patent: 5990628 (1999-11-01), Birrell
patent: 6066843 (2000-05-01), Scheremeta
patent: 6396040 (2002-05-01), Hill
patent: 11-326043 (1999-11-01), None

Affiliated with

Also associated with

Rating

Portable handheld artificial light detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Portable handheld artificial light detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable handheld artificial light detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3827888