DE2255987A1 - Lichtkasten - Google Patents

Lichtkasten

Info

Publication number
DE2255987A1
DE2255987A1 DE2255987A DE2255987A DE2255987A1 DE 2255987 A1 DE2255987 A1 DE 2255987A1 DE 2255987 A DE2255987 A DE 2255987A DE 2255987 A DE2255987 A DE 2255987A DE 2255987 A1 DE2255987 A1 DE 2255987A1
Authority
DE
Germany
Prior art keywords
filter
light
polarizing
light box
film
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.)
Pending
Application number
DE2255987A
Other languages
German (de)
English (en)
Inventor
Dwin R Craig
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.)
DYNATRONICS
Original Assignee
DYNATRONICS
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.)
Filing date
Publication date
Application filed by DYNATRONICS filed Critical DYNATRONICS
Publication of DE2255987A1 publication Critical patent/DE2255987A1/de
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/281—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for attenuating light intensity, e.g. comprising rotatable polarising elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
DE2255987A 1971-11-15 1972-11-15 Lichtkasten Pending DE2255987A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19853371A 1971-11-15 1971-11-15

Publications (1)

Publication Number Publication Date
DE2255987A1 true DE2255987A1 (de) 1973-05-24

Family

ID=22733775

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2255987A Pending DE2255987A1 (de) 1971-11-15 1972-11-15 Lichtkasten

Country Status (12)

Country Link
US (1) US3714413A (enExample)
JP (1) JPS5225254B2 (enExample)
AU (1) AU456686B2 (enExample)
BE (1) BE791342A (enExample)
CA (1) CA973405A (enExample)
CH (1) CH560395A5 (enExample)
DE (1) DE2255987A1 (enExample)
FR (1) FR2160455A1 (enExample)
GB (1) GB1363178A (enExample)
IL (1) IL40856A (enExample)
IT (1) IT973487B (enExample)
NL (1) NL7215021A (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5425004U (enExample) * 1977-07-21 1979-02-19
US4416530A (en) * 1982-03-15 1983-11-22 Ricoh Company, Ltd. Polarizing filters for enhancing contrast in xerographic copying machines
US6311419B1 (en) 1989-12-31 2001-11-06 Smartlight Ltd. Dedicated mammogram viewer
IL92936A (en) * 1989-12-31 1998-02-08 Smartlight Ltd Self-masking transparency viewing apparatus
US6088941A (en) * 1992-04-06 2000-07-18 A.D.P. Adaptive Visual Perception Ltd. Transparency viewing apparatus
US5790216A (en) * 1993-11-28 1998-08-04 Smartlight Ltd. Viewing apparatus and work station
WO1996017269A2 (en) * 1994-11-28 1996-06-06 Smartlight Limited Display device
US6269565B1 (en) 1994-11-28 2001-08-07 Smartlight Ltd. Display device
WO1996035138A1 (en) 1995-05-05 1996-11-07 Smartlight Limited Automatic transparency masking
US5963276A (en) * 1997-01-09 1999-10-05 Smartlight Ltd. Back projection transparency viewer with overlapping pixels
JP2001264696A (ja) * 2000-03-16 2001-09-26 Canon Inc 照明光学系及びそれを備えた露光装置
US6646801B1 (en) 2000-06-09 2003-11-11 Benjamin Sley Glare reduction system and method
US20060215076A1 (en) * 2005-03-22 2006-09-28 Karim John H Selective light transmitting and receiving system and method
US7729607B2 (en) * 2006-05-31 2010-06-01 Technologies4All, Inc. Camera glare reduction system and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062087A (en) * 1956-04-09 1962-11-06 Budd Co Apparatus for investigating polarized light phenomena
BE693799A (enExample) * 1966-02-09 1967-07-17
US3506333A (en) * 1967-01-19 1970-04-14 Polaroid Corp Protective filter combination for intense light flashes

Also Published As

Publication number Publication date
IL40856A0 (en) 1973-01-30
US3714413A (en) 1973-01-30
AU456686B2 (en) 1975-01-09
IL40856A (en) 1975-02-10
JPS4862423A (enExample) 1973-08-31
CH560395A5 (enExample) 1975-03-27
GB1363178A (en) 1974-08-14
AU4881472A (en) 1974-11-21
JPS5225254B2 (enExample) 1977-07-06
FR2160455A1 (enExample) 1973-06-29
IT973487B (it) 1974-06-10
NL7215021A (enExample) 1973-05-17
CA973405A (en) 1975-08-26
BE791342A (fr) 1973-05-14

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