HK1000426A1 - Opaque projector - Google Patents

Opaque projector

Info

Publication number: HK1000426A1
Authority: HK; Hong Kong
Prior art keywords: opaque projector; projector; opaque
Prior art date: 1988-11-25

Application number

HK97102004A

Other languages

English (en)

Inventor

Koga Ritsuo

Hara Kuroudo

Original Assignee

Plus Kk

Priority date (The priority date 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 date listed.)

1988-11-25

Filing date

1997-10-22

Publication date

1998-03-20

1997-10-22 Application filed by Plus Kk filed Critical Plus Kk

1998-03-20 Publication of HK1000426A1 publication Critical patent/HK1000426A1/xx

Links

Classifications

- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/08—Projectors or projection-type viewers; Accessories therefor affording epidiascopic projection
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/06—Projectors or projection-type viewers; Accessories therefor affording only episcopic projection
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S353/00—Optics: image projectors
- Y10S353/04—Opaque

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Projection Apparatus (AREA)
Light Sources And Details Of Projection-Printing Devices (AREA)
Non-Portable Lighting Devices Or Systems Thereof (AREA)

HK97102004A 1988-11-25 1997-10-22 Opaque projector HK1000426A1 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP1988153441U JPH08673Y2 (ja)	1988-11-25	1988-11-25	反射型実物投影機

Publications (1)

Publication Number	Publication Date
HK1000426A1 true HK1000426A1 (en)	1998-03-20

Family

ID=15562605

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
HK97102004A HK1000426A1 (en)	1988-11-25	1997-10-22	Opaque projector

Country Status (7)

Country	Link
US (1)	US4979813A (xx)
JP (1)	JPH08673Y2 (xx)
CA (1)	CA2003328C (xx)
DE (1)	DE3938938C2 (xx)
FR (1)	FR2639723B1 (xx)
GB (1)	GB2225446B (xx)
HK (1)	HK1000426A1 (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5534955A (en) *	1994-04-21	1996-07-09	Fuji Photo Film Co., Ltd.	Reflection type projector
DE9411145U1 (de) *	1994-07-09	1994-09-15	ProCent Patent- und Verwaltungs AG, Zürich	Realbild-Auflichtprojektor
US5504544A (en) *	1994-11-23	1996-04-02	Minnesota Mining And Manufacturing Company	Projector with multiple lamp light source
SG114471A1 (en) *	2000-09-08	2005-09-28	Vista Technology Co Ltd	Projector with image source from objects
US20140247431A1 (en) *	2014-05-09	2014-09-04	Terry James Boss	Projector with light emitting diodes

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1373491A (en) *	1919-07-25	1921-04-05	Frank J Detwiler	Picture-projector
GB336499A (en) *	1929-01-31	1930-10-16	Ernst Leitz	Improvements in or relating to episcopic projection apparatus
GB605562A (en) *	1945-04-30	1948-07-27	Bruce Martin	Improvements in and relating to episcopic projection
US3947103A (en) *	1970-10-19	1976-03-30	Gerald Altman	Low profile episcopic projector and opaque materials therefor
US3915567A (en) *	1970-10-19	1975-10-28	Gerald Altman	Low profile episcopic projector and opaque materials therefor
DE1797080A1 (de) *	1968-08-13	1972-01-20	Enna Werk Optik Apelt	Episkop
JPS5068739U (xx) *	1973-10-22	1975-06-19
JPS5279936U (xx) *	1975-12-12	1977-06-15
DE2723228C2 (de) *	1977-05-23	1982-11-04	Demolux Gmbh & Co Kg, 6070 Langen	Episkop
DE2839742A1 (de) *	1978-09-13	1980-03-27	Reflecta Gmbh Foto	Vorfuehrsystem zur vorfuehrung undurchsichtiger bilder, wie z.b. fotos
GB2062892B (en) *	1979-11-07	1983-11-16	Eaton T W	Aid for the partially sighted
DE3225594A1 (de) *	1982-03-26	1983-10-06	Frank G Dr Back	Episkopischer projektor
JPS6111148U (ja) *	1984-06-22	1986-01-23	マックス株式会社	反射型投影機の照明装置
JPS6116544U (ja) *	1984-07-03	1986-01-30	マックス株式会社	反射型投影機の照明装置
JPH0442838Y2 (xx) *	1984-11-13	1992-10-09
US4682868A (en) *	1985-05-31	1987-07-28	Constantin Systems, Inc.	Thermal management system for an episcopic image projector
JPS6378941U (xx) *	1986-11-12	1988-05-25

1988
- 1988-11-25 JP JP1988153441U patent/JPH08673Y2/ja not_active Expired - Lifetime
1989
- 1989-10-25 FR FR8913971A patent/FR2639723B1/fr not_active Expired - Fee Related
- 1989-11-10 GB GB8925444A patent/GB2225446B/en not_active Expired - Fee Related
- 1989-11-20 US US07/438,069 patent/US4979813A/en not_active Expired - Lifetime
- 1989-11-20 CA CA002003328A patent/CA2003328C/en not_active Expired - Fee Related
- 1989-11-24 DE DE3938938A patent/DE3938938C2/de not_active Expired - Fee Related
1997
- 1997-10-22 HK HK97102004A patent/HK1000426A1/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
JPH0273622U (xx)	1990-06-05
GB2225446A (en)	1990-05-30
GB2225446B (en)	1993-02-03
CA2003328C (en)	1994-01-18
CA2003328A1 (en)	1990-05-25
FR2639723A1 (fr)	1990-06-01
US4979813A (en)	1990-12-25
DE3938938C2 (de)	1994-05-05
GB8925444D0 (en)	1989-12-28
FR2639723B1 (fr)	1994-01-14
JPH08673Y2 (ja)	1996-01-10
DE3938938A1 (de)	1990-06-07

Legal Events

Date	Code	Title	Description
2004-06-18	PC	Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)	Effective date: 20031110
2004-12-15	PC	Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Publication	Publication Date	Title
EP0330239A3 (en)	1990-11-28	Photosensitive composition
EP0443586A3 (en)	1992-08-26	Projector
EP0381111A3 (en)	1990-12-19	Electroactive-passivation film
GB2215268B (en)	1991-11-13	Improved opaque film compositions
EP0350914A3 (en)	1990-07-18	Humidity-retaining mask
EP0358170A3 (en)	1990-06-20	Direct positive photographic materials
HK178295A (en)	1995-12-01	Image projection arrangement
ZA914087B (en)	1993-01-27	Translucent thixotropic hygel
GB2225446B (en)	1993-02-03	Opaque projector
GB2232780B (en)	1993-08-04	Opaque projector
GB2217607B (en)	1991-12-11	Lens
HUT51365A (en)	1990-04-28	Lamp-reflector unit
GB8824697D0 (en)	1988-11-30	Shutter mechanisms
GB2226654B (en)	1993-06-09	Screen
GB8824233D0 (en)	1988-11-23	Picture hookplate
EP0346104A3 (en)	1990-06-13	Board-in type contact-connectors
PL270466A2 (en)	1988-11-10	Projector
GB8812212D0 (en)	1988-06-29	Microfilm techniques
PL270455A2 (en)	1988-11-10	Workshop-type enlarger
GB8819085D0 (en)	1988-09-14	Image modification
GB8810689D0 (en)	1988-06-08	Film
GB8805318D0 (en)	1988-04-07	Ball projector
CS379387A1 (en)	1989-12-13	Panoramatic projector
GB8803547D0 (en)	1988-03-16	Shutter arrangements
GB8822752D0 (en)	1988-11-02	Music projector