CRT display device for use in high ambient light

Details CRT display device for use in high ambient light CRT display device for use in high ambient light

1995-09-12

1998-06-02

Patel, Nimeshkumar

Electric lamp and discharge devices

Cathode ray tube

Envelope

313478, 313479, H01T 2906

Patent

active

057605408

ABSTRACT:
A CRT display device including an envelope having a faceplate of a predetermined light transmissivity, a luminescent screen disposed on an inner surface of the faceplate and electron beam producing means disposed within the envelope for exiting the screen to effect production of a luminescent image, a neutral density transmissivity filter means disposed adjacent an outer surface of the faceplate, wherein for viewing under high ambient light conditions the total transmissivity T.sub.t is 10%.ltoreq.T.sub.t .ltoreq.30%, and during operation of the display device the electron beam producing means produce a beam current density on the screen such that the contrast C.sub.4000 is 4.ltoreq.C.sub.4000 .ltoreq.8.

REFERENCES:
patent: 5150004 (1992-09-01), Tong et al.
patent: 5243255 (1993-09-01), Iwasaki
patent: 5396148 (1995-03-01), Endo et al.
SID 86 Digest, vol., 1986, (New York, USA), J.R. Stevenson et al, Optical characterization of Anti-Glare Surfaces on Cathode Ray Tubes, pp. 424-427, col. 1, line 3-line 9.

Affiliated with

Also associated with

Rating

CRT display device for use in high ambient light does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with CRT display device for use in high ambient light, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CRT display device for use in high ambient light will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1463902