NDLI: A Second Generation Color Tube Providing More than Twice the Brightness and Improved Contrast

Content Provider	IEEE Xplore Digital Library
Author	Fiore, Joseph P. Kaplan, Sam H.
Copyright Year	1975
Abstract	The parallax or shadow-mask type of tri-color tube was first described in the literature with a line-or grille-type color selection electrode1 but it first saw the light of commercial day in very much like its present form, using an apertured plate2 or mask for color selection. As thus introduced, the tube was distinctly wanting in brightness due principally to the poor electron-transmissivity of the aperture mask and efforts have been made ever since to improve its brightness capability. For the most part, emphasis has been placed on better tube fabricating techniques, which make possible the use of shadow mask structures having a higher electron transparency, and on new phosphor materials which yield brighter pictures in response to electron excitation. Even in its present commercial form, however, the shadow mask tube has not attained the desirable level of brightness, that is to say, sufficient for use in environments of high light ambients such as well lighted retail stores and similar display rooms, porches or rooms of residences that have large window areas and the like. When operated in such locations, the shadow mask tube as it has been known heretofore suffers a serious loss in performance; specifically, the picture washes out both in respect of contrast and chroma.
Sponsorship	IEEE Consumer Electronics Society
Starting Page	65
Ending Page	73
Page Count	9
File Size	1138079
File Format	PDF
ISSN	00983063
Volume Number	CE-28
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1982-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Brightness Phosphors Electron tubes Filters Apertures Displays Performance loss Optical attenuators Filtering Costs
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Media Technology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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