DE3569045D1 - Light box for providing a background illumination having brightness values locally adjusted to the density of a transparency to be viewed by means of the light box - Google Patents
Light box for providing a background illumination having brightness values locally adjusted to the density of a transparency to be viewed by means of the light boxInfo
- Publication number
- DE3569045D1 DE3569045D1 DE8585200802T DE3569045T DE3569045D1 DE 3569045 D1 DE3569045 D1 DE 3569045D1 DE 8585200802 T DE8585200802 T DE 8585200802T DE 3569045 T DE3569045 T DE 3569045T DE 3569045 D1 DE3569045 D1 DE 3569045D1
- Authority
- DE
- Germany
- Prior art keywords
- light box
- transparency
- viewed
- density
- providing
- 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
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/02—Viewing or reading apparatus
- G02B27/022—Viewing apparatus
- G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies
- G02B27/026—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies and a display device, e.g. CRT, LCD, for adding markings or signs or to enhance the contrast of the viewed object
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8401605A NL8401605A (nl) | 1984-05-18 | 1984-05-18 | Lichtkast voor het geven van een achtergrondverlichting met helderheidswaarden die plaatselijk zijn aangepast aan de zwarting van een via de lichtkast te bekijken doorzichtbeeld. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3569045D1 true DE3569045D1 (en) | 1989-04-27 |
Family
ID=19843973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8585200802T Expired DE3569045D1 (en) | 1984-05-18 | 1985-05-17 | Light box for providing a background illumination having brightness values locally adjusted to the density of a transparency to be viewed by means of the light box |
Country Status (5)
Country | Link |
---|---|
US (1) | US4637150A (de) |
EP (1) | EP0162528B1 (de) |
JP (1) | JPS61159616A (de) |
DE (1) | DE3569045D1 (de) |
NL (1) | NL8401605A (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4908876A (en) * | 1988-03-16 | 1990-03-13 | Digivision, Inc. | Apparatus and method for enhancement of image viewing by modulated illumination of a transparency |
DE69022069T2 (de) * | 1989-12-31 | 1996-04-18 | Adaptive Visual Perception | Selbsttätig abdunkelnder betrachter für transparente bilder. |
IL92936A (en) * | 1989-12-31 | 1998-02-08 | Smartlight Ltd | Self-masking transparency viewing apparatus |
US6311419B1 (en) | 1989-12-31 | 2001-11-06 | Smartlight Ltd. | Dedicated mammogram viewer |
US5251392A (en) * | 1991-02-08 | 1993-10-12 | Vemco Corporation | Artificial window |
US5253051A (en) * | 1991-03-05 | 1993-10-12 | Mcmanigal Paul G | Video artificial window apparatus |
US5207495A (en) * | 1991-07-08 | 1993-05-04 | Vemco Corporation | Graphic arts light box |
US6088941A (en) * | 1992-04-06 | 2000-07-18 | A.D.P. Adaptive Visual Perception Ltd. | Transparency viewing apparatus |
US5313726A (en) * | 1992-12-01 | 1994-05-24 | Advanced Technology Incubator, Inc. | Programmable light modulator for viewing transparent film prints |
US6208437B1 (en) | 1993-07-12 | 2001-03-27 | Stephen Neushul | Viewing light box scanner for scanning and viewing transmissive and reflective media images |
JP3284002B2 (ja) * | 1993-11-22 | 2002-05-20 | 富士写真フイルム株式会社 | 楕円偏光板およびそれを用いた液晶表示装置 |
US5793455A (en) * | 1993-11-22 | 1998-08-11 | Fuji Photo Film Co., Ltd. | Elliptically polarizing plate and liquid crystal display in which a compensation sheet direction of non-zero minimum retardation is inclined at 5 to 50 degrees |
WO1995014949A2 (en) * | 1993-11-28 | 1995-06-01 | A.D.P. Adaptive Visual Perception Ltd. | Transparency viewing device comprising passive matrix lcd |
EP0871915A4 (de) | 1995-06-21 | 2000-05-03 | Smart Light Limited | Vorrichtung zur retroprojektion von folien |
IL114258A0 (en) * | 1995-06-21 | 1995-10-31 | Adp Ltd | Transparency viewing apparatus |
EP0990189A4 (de) * | 1995-11-24 | 2001-02-14 | Smartlight Ltd | Farbtonanpassung |
IL119407A0 (en) * | 1995-11-24 | 1997-01-10 | Smartlight Limited | Local chromaticity correction |
US5963276A (en) * | 1997-01-09 | 1999-10-05 | Smartlight Ltd. | Back projection transparency viewer with overlapping pixels |
US7375350B2 (en) | 1999-11-24 | 2008-05-20 | Neushul Stephen | Computed radiography x-ray cassette with rigid embedded CR plate |
US6188501B1 (en) | 1999-11-24 | 2001-02-13 | Stephen Neushul | Apparatus and method of capturing images from alternative media types |
CN101004518B (zh) | 2001-02-27 | 2018-07-20 | 杜比实验室特许公司 | 高动态范围显示装置 |
US8687271B2 (en) | 2002-03-13 | 2014-04-01 | Dolby Laboratories Licensing Corporation | N-modulation displays and related methods |
AU2003212146A1 (en) | 2002-03-13 | 2003-09-22 | The University Of British Columbia | High dynamic range display devices |
US8471807B2 (en) * | 2007-02-01 | 2013-06-25 | Dolby Laboratories Licensing Corporation | Calibration of displays having spatially-variable backlight |
US20090322800A1 (en) | 2008-06-25 | 2009-12-31 | Dolby Laboratories Licensing Corporation | Method and apparatus in various embodiments for hdr implementation in display devices |
US20100214282A1 (en) | 2009-02-24 | 2010-08-26 | Dolby Laboratories Licensing Corporation | Apparatus for providing light source modulation in dual modulator displays |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1803631A (en) * | 1928-07-12 | 1931-05-05 | Elliott B Mabee | Illuminating device for the display and examination of negatives |
US2516270A (en) * | 1945-05-08 | 1950-07-25 | Westinghouse Electric Corp | Photographic illuminator |
FR1142655A (fr) * | 1956-02-13 | 1957-09-20 | Appareil pour la vision des clichés diapositifs | |
US3249691A (en) * | 1963-10-14 | 1966-05-03 | Gen Electric | Wide density range film illuminator |
FR1475739A (fr) * | 1966-01-14 | 1967-04-07 | écran lumineux à commande automatique de luminances locales | |
US3492486A (en) * | 1966-05-02 | 1970-01-27 | Harold W Bischoff | Film comparator |
US4003151A (en) * | 1975-10-03 | 1977-01-18 | Dynatech Laboratories, Incorporated | Test plate reader |
JPS5268432A (en) * | 1975-12-04 | 1977-06-07 | Fuji Photo Film Co Ltd | Automatic dimming observing device for x-ray photograph image |
US4164822A (en) * | 1978-01-04 | 1979-08-21 | Batton James L | Portable map reading system |
US4267489A (en) * | 1978-12-01 | 1981-05-12 | Ohno Research And Development Laboratories Company Limited | Thin schaukasten |
US4335421A (en) * | 1980-03-17 | 1982-06-15 | Modia Joseph W | Light fixture, light aperture and method of uniformly illuminating an optically diffusive viewing area |
GB2088574B (en) * | 1980-12-03 | 1984-07-18 | Marconi Co The Ltd | Printing using a flying spot scanner |
-
1984
- 1984-05-18 NL NL8401605A patent/NL8401605A/nl not_active Application Discontinuation
-
1985
- 1985-05-17 DE DE8585200802T patent/DE3569045D1/de not_active Expired
- 1985-05-17 EP EP85200802A patent/EP0162528B1/de not_active Expired
- 1985-05-17 JP JP60104084A patent/JPS61159616A/ja active Pending
- 1985-05-17 US US06/735,801 patent/US4637150A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4637150A (en) | 1987-01-20 |
JPS61159616A (ja) | 1986-07-19 |
NL8401605A (nl) | 1985-12-16 |
EP0162528B1 (de) | 1989-03-22 |
EP0162528A1 (de) | 1985-11-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |