AT312324B - Photo projector with automatic focusing - Google Patents

Photo projector with automatic focusing

Info

Publication number: AT312324B
Authority: AT; Austria
Prior art keywords: automatic focusing; photo projector; projector; photo; focusing
Prior art date: 1969-07-22

Application number

AT667970A

Other languages

German (de)

Original Assignee

Gaf Corp

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.)

1969-07-22

Filing date

1970-07-22

Publication date

1973-12-27

1970-07-22 Application filed by Gaf Corp filed Critical Gaf Corp

1973-12-27 Application granted granted Critical

1973-12-27 Publication of AT312324B publication Critical patent/AT312324B/en

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
- G03B21/14—Details
- G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Focusing (AREA)
Automatic Focus Adjustment (AREA)
Projection Apparatus (AREA)
Transforming Electric Information Into Light Information (AREA)

AT667970A 1969-07-22 1970-07-22 Photo projector with automatic focusing AT312324B (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US84331169A	1969-07-22	1969-07-22
US3795070A	1970-05-18	1970-05-18

Publications (1)

Publication Number	Publication Date
AT312324B true AT312324B (en)	1973-12-27

Family

ID=26714651

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT667970A AT312324B (en)	1969-07-22	1970-07-22	Photo projector with automatic focusing

Country Status (11)

Country	Link
JP (1)	JPS5012304B1 (en)
AT (1)	AT312324B (en)
BE (1)	BE753741A (en)
CA (1)	CA948908A (en)
CH (1)	CH516172A (en)
DE (2)	DE7027406U (en)
FR (1)	FR2053071B1 (en)
GB (1)	GB1285870A (en)
IL (1)	IL34951A (en)
NL (1)	NL7010832A (en)
SE (1)	SE360747B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0514728A1 (en) *	1991-05-23	1992-11-25	Agfa-Gevaert AG	Device for an uniform illumination of a screen

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2518767A1 (en) *	1981-12-17	1983-06-24	Centre Nat Etd Spatiales	METHOD FOR AUTOMATICALLY ADJUSTING THE SHARPNESS OF IMAGES PROJECTED ON A SCREEN AND DEVICES FOR CARRYING OUT SAID METHOD
DE3325042A1 (en) *	1983-07-12	1984-02-23	Kodak Ag, 7000 Stuttgart	SELF FOCUSING DEVICE
JPS6351681A (en) *	1986-08-20	1988-03-04	Agency Of Ind Science & Technol	Semiconductor device
US6835921B2 (en)	2000-11-15	2004-12-28	Agfa Corporation	Focusing system for use in imaging systems
EP1408360A3 (en) *	2002-10-11	2004-07-28	Agfa Corporation	Focusing system and method for use in imaging systems

1970
- 1970-07-19 IL IL34951A patent/IL34951A/en unknown
- 1970-07-20 JP JP45063500A patent/JPS5012304B1/ja active Pending
- 1970-07-20 CH CH1098670A patent/CH516172A/en not_active IP Right Cessation
- 1970-07-21 GB GB35309/70A patent/GB1285870A/en not_active Expired
- 1970-07-21 CA CA088,666A patent/CA948908A/en not_active Expired
- 1970-07-21 DE DE7027406U patent/DE7027406U/en not_active Expired
- 1970-07-21 DE DE2036119A patent/DE2036119C3/en not_active Expired
- 1970-07-22 AT AT667970A patent/AT312324B/en not_active IP Right Cessation
- 1970-07-22 SE SE10157/70A patent/SE360747B/xx unknown
- 1970-07-22 FR FR7027041A patent/FR2053071B1/fr not_active Expired
- 1970-07-22 BE BE753741D patent/BE753741A/en unknown
- 1970-07-22 NL NL7010832A patent/NL7010832A/xx unknown

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0514728A1 (en) *	1991-05-23	1992-11-25	Agfa-Gevaert AG	Device for an uniform illumination of a screen

Also Published As

Publication number	Publication date
NL7010832A (en)	1971-01-26
SE360747B (en)	1973-10-01
DE2036119C3 (en)	1974-03-28
DE2036119B2 (en)	1973-08-23
IL34951A (en)	1973-02-28
DE2036119A1 (en)	1971-02-04
JPS5012304B1 (en)	1975-05-10
GB1285870A (en)	1972-08-16
FR2053071B1 (en)	1977-11-04
DE7027406U (en)	1970-12-03
BE753741A (en)	1970-12-31
IL34951A0 (en)	1970-09-17
CH516172A (en)	1971-11-30
FR2053071A1 (en)	1971-04-16
CA948908A (en)	1974-06-11

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Legal Events

Date	Code	Title	Description
1978-01-15	ELJ	Ceased due to non-payment of the annual fee