GB1323540A - Correcting lens used to form fluorescent screens of colour television - Google Patents
Correcting lens used to form fluorescent screens of colour televisionInfo
- Publication number
- GB1323540A GB1323540A GB913072A GB913072A GB1323540A GB 1323540 A GB1323540 A GB 1323540A GB 913072 A GB913072 A GB 913072A GB 913072 A GB913072 A GB 913072A GB 1323540 A GB1323540 A GB 1323540A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lens used
- correcting lens
- colour television
- fluorescent screens
- form fluorescent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
- H01J9/22—Applying luminescent coatings
- H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
- H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
- H01J9/2272—Devices for carrying out the processes, e.g. light houses
- H01J9/2273—Auxiliary lenses and filters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1971013665U JPS4721552U (fr) | 1971-03-05 | 1971-03-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1323540A true GB1323540A (en) | 1973-07-18 |
Family
ID=11839482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB913072A Expired GB1323540A (en) | 1971-03-05 | 1972-02-28 | Correcting lens used to form fluorescent screens of colour television |
Country Status (4)
Country | Link |
---|---|
US (1) | US3784282A (fr) |
JP (1) | JPS4721552U (fr) |
FR (1) | FR2128352B1 (fr) |
GB (1) | GB1323540A (fr) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49145455U (fr) * | 1973-04-12 | 1974-12-16 | ||
US3782253A (en) * | 1973-05-02 | 1974-01-01 | Rca Corp | Color television picture tube screening method |
US3953209A (en) * | 1973-08-20 | 1976-04-27 | Rca Corporation | Method for preparing supplemental filter for lighthouse |
JPS542612Y2 (fr) * | 1973-11-10 | 1979-02-03 | ||
JPS5712961B2 (fr) * | 1974-03-15 | 1982-03-13 | ||
JPS50125755A (fr) * | 1974-03-19 | 1975-10-03 | ||
JPS522314U (fr) * | 1975-06-24 | 1977-01-08 | ||
US4630905A (en) * | 1981-02-10 | 1986-12-23 | Roxor Corporation | Elimination of internal reflections and diffractions from junctures in, and at the periphery of, a segmented mirror |
US4609266A (en) * | 1982-06-07 | 1986-09-02 | Roxor Corporation | Elimination of internal reflections and diffractions from junctures in and at the periphery of, a segmented mirror |
IT1150272B (it) * | 1982-03-11 | 1986-12-10 | Siv Soc Italiana Vetro | Rifrattore a prismi atto a concentrare energia solare,su un opportuno piano di raccolta,rimanendo in posizione fissa nel tempo |
US4621898A (en) * | 1983-03-17 | 1986-11-11 | Allied Corporation | Directional optical filter |
JPS6077941U (ja) * | 1983-11-02 | 1985-05-31 | 三菱電機株式会社 | 空気調和機の配管接続構造 |
JPS60113475U (ja) * | 1984-01-05 | 1985-07-31 | 三菱重工業株式会社 | 空気調和機 |
US4641933A (en) * | 1984-08-20 | 1987-02-10 | Roxor Corporation | Elimination of internal reflections and diffractions from junctures in, and at the periphery of, a segmented mirror |
US4674850A (en) * | 1984-08-20 | 1987-06-23 | Roxor Corporation | Elimination of internal reflections and diffractions from junctures in, and at the periphery of, a segmented mirror |
US4632524A (en) * | 1984-08-20 | 1986-12-30 | Roxor Corporation | Elimination of internal reflections and diffractions from junctures in, and at the periphery of a segmented mirror |
JPH0637362Y2 (ja) * | 1987-02-09 | 1994-09-28 | カシオ計算機株式会社 | 液晶プロジェクタ |
US6380994B1 (en) | 1995-07-28 | 2002-04-30 | Fujitsu Limited | Fresnel lens and liquid crystal display device |
US5751387A (en) * | 1995-07-28 | 1998-05-12 | Fujitsu Limited | Fresnel lens and liquid crystal display device |
US5801889A (en) * | 1995-08-16 | 1998-09-01 | Eastman Kodak Company | Technique to eliminate scattered light in diffractive optical elements |
US6310733B1 (en) * | 1996-08-16 | 2001-10-30 | Eugene Dolgoff | Optical elements and methods for their manufacture |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3134021A (en) * | 1959-08-01 | 1964-05-19 | Zeiss Ikon Ag | Photoelectric exposure meters with light ray limiters |
US3279340A (en) * | 1964-03-19 | 1966-10-18 | Rca Corp | Art of making color-phosphor mosaic screens |
US3385184A (en) * | 1964-03-19 | 1968-05-28 | Rca Corp | Optical system for use in making color-phosphor mosaic screens |
US3628850A (en) * | 1970-02-24 | 1971-12-21 | Hitachi Ltd | Correcting lens |
-
1971
- 1971-03-05 JP JP1971013665U patent/JPS4721552U/ja active Pending
-
1972
- 1972-02-23 US US00228639A patent/US3784282A/en not_active Expired - Lifetime
- 1972-02-23 FR FR7206103A patent/FR2128352B1/fr not_active Expired
- 1972-02-28 GB GB913072A patent/GB1323540A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3784282A (en) | 1974-01-08 |
DE2210727B2 (de) | 1977-06-16 |
FR2128352A1 (fr) | 1972-10-20 |
JPS4721552U (fr) | 1972-11-10 |
FR2128352B1 (fr) | 1975-10-24 |
DE2210727A1 (de) | 1972-09-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
PCNP | Patent ceased through non-payment of renewal fee |