GB2140571B - Light mixer - Google Patents

Light mixer

Info

Publication number: GB2140571B
Authority: GB; United Kingdom
Prior art keywords: light mixer; mixer; light
Prior art date: 1983-05-28
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

Application number

GB08411901A

Other versions

GB2140571A (en

GB8411901D0 (en

Inventor

Alfred Hengst

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Ernst Leitz Wetzlar GmbH

Original Assignee

Ernst Leitz Wetzlar GmbH

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.)

1983-05-28

Filing date

1984-05-10

Publication date

1986-08-20

1984-05-10 Application filed by Ernst Leitz Wetzlar GmbH filed Critical Ernst Leitz Wetzlar GmbH

1984-06-13 Publication of GB8411901D0 publication Critical patent/GB8411901D0/en

1984-11-28 Publication of GB2140571A publication Critical patent/GB2140571A/en

1986-08-20 Application granted granted Critical

1986-08-20 Publication of GB2140571B publication Critical patent/GB2140571B/en

Status Expired legal-status Critical Current

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
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/54—Lamp housings; Illuminating means
- G03B27/545—Lamp housings; Illuminating means for enlargers

Landscapes

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

GB08411901A 1983-05-28 1984-05-10 Light mixer Expired GB2140571B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19833319399 DE3319399A1 (en)	1983-05-28	1983-05-28	LIGHT MIXING CHAMBER FOR A PHOTOGRAPHIC ENLARGEMENT OR COPIER

Publications (3)

Publication Number	Publication Date
GB8411901D0 GB8411901D0 (en)	1984-06-13
GB2140571A GB2140571A (en)	1984-11-28
GB2140571B true GB2140571B (en)	1986-08-20

Family

ID=6200112

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB08411901A Expired GB2140571B (en)	1983-05-28	1984-05-10	Light mixer

Country Status (6)

Country	Link
JP (2)	JPS59222828A (en)
CH (1)	CH665721A5 (en)
DE (1)	DE3319399A1 (en)
FR (1)	FR2546639B1 (en)
GB (1)	GB2140571B (en)
IT (2)	IT8453434V0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2587850B2 (en) *	1988-01-29	1997-03-05	富士写真フイルム株式会社	Photo printing equipment
DE9014406U1 (en) *	1990-10-17	1990-12-20	Kempf, Georg-Ulrich, 2057 Wentorf	Device for enlarging transparent originals using the transmitted light method
US6222623B1 (en) *	1999-09-03	2001-04-24	Mars Incorporated	Integrating light mixer
US10690303B2 (en)	2017-12-28	2020-06-23	Bezel Studio	Lighting devices and methods

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2061192A (en) *	1935-04-11	1936-11-17	Fairchild Aerial Camera Corp	Photographic enlarger
GB829692A (en) *	1956-11-07	1960-03-02	Ilford Ltd	Improvements in or relating to optical projection apparatus
US3157087A (en) *	1961-12-26	1964-11-17	Pako Corp	Optical light distribution system for a photographic projection printer
DE1185473B (en) *	1962-05-05	1965-01-14	Klimsch & Co	Condenser system for magnifiers and fluoroscopic reproduction devices
US3756712A (en) *	1971-12-14	1973-09-04	Berkey Photo Inc	Illumination system for color enlargers and the like
CH612519A5 (en) *	1977-03-08	1979-07-31	Zelacolor Syst
JPS56114939A (en) *	1980-02-16	1981-09-09	Fujimoto Shashin Kogyo Kk	Light source unit assembly of photographic enlarger
DE3007576C2 (en) *	1980-02-28	1981-11-12	Fujimoto Photo Industrial Co., Ltd., Osaka	Exposure device for photographic enlargers

1983
- 1983-05-28 DE DE19833319399 patent/DE3319399A1/en active Granted
1984
- 1984-05-10 GB GB08411901A patent/GB2140571B/en not_active Expired
- 1984-05-17 JP JP59097683A patent/JPS59222828A/en active Pending
- 1984-05-25 FR FR8408264A patent/FR2546639B1/en not_active Expired
- 1984-05-28 CH CH2615/84A patent/CH665721A5/en not_active IP Right Cessation
- 1984-05-28 IT IT8453434U patent/IT8453434V0/en unknown
- 1984-05-28 IT IT67540/84A patent/IT1179690B/en active
1991
- 1991-09-13 JP JP1991074025U patent/JPH0489944U/ja active Pending

Also Published As

Publication number	Publication date
IT8467540A1 (en)	1985-11-28
GB2140571A (en)	1984-11-28
DE3319399A1 (en)	1984-11-29
JPS59222828A (en)	1984-12-14
IT8453434V0 (en)	1984-05-28
GB8411901D0 (en)	1984-06-13
DE3319399C2 (en)	1990-04-05
IT1179690B (en)	1987-09-16
FR2546639B1 (en)	1987-09-11
JPH0489944U (en)	1992-08-05
IT8467540A0 (en)	1984-05-28
CH665721A5 (en)	1988-05-31
FR2546639A1 (en)	1984-11-30

Publication	Publication Date	Title
DE3474203D1 (en)	1988-10-27	Lamp
EP0138152A3 (en)	1986-01-15	Cuvette
DE3469587D1 (en)	1988-04-07	Light assembly
DE3472828D1 (en)	1988-08-25	Lamp
GB2135475B (en)	1986-03-19	Optical de-polarizer
ZA844806B (en)	1985-05-29	Mixers
GB8324420D0 (en)	1983-10-12	Mixing arrangement
GB8402889D0 (en)	1984-03-07	Lamp
GB2151424B (en)	1987-09-30	Mixer
EP0124168A3 (en)	1986-03-19	Mixer
EP0143225A3 (en)	1987-08-19	Microwave-balanced mixer
EP0125392A3 (en)	1984-12-19	Mixer
GB8516864D0 (en)	1985-08-07	Connective elements
GB2140571B (en)	1986-08-20	Light mixer
GB2152280B (en)	1987-07-22	Lamp
GB2138929B (en)	1986-10-15	Standard lamp
GB8328308D0 (en)	1983-11-23	Lamp
SU1151283A1 (en)	1985-04-23	Mixer
GB2092765B (en)	1984-11-14	Light mixing
GB8432037D0 (en)	1985-01-30	Mixing component
EP0135761A3 (en)	1987-03-25	Spectrophotometer
GB8415771D0 (en)	1984-07-25	Toy-signboard components
SU1169731A2 (en)	1985-07-30	Mixer
SU1159611A2 (en)	1985-06-07	Mixer
GB8325618D0 (en)	1983-10-26	Multipurpose-sack-truck-wheel-barrow-cement mixer

Legal Events

Date	Code	Title	Description
1995-05-17	746	Register noted 'licences of right' (sect. 46/1977)	Effective date: 19950419
1997-01-08	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19960510