WO2010118869A9 - Vorrichtung und verfahren zum durchleuchten eines films - Google Patents
Vorrichtung und verfahren zum durchleuchten eines films Download PDFInfo
- Publication number
- WO2010118869A9 WO2010118869A9 PCT/EP2010/002313 EP2010002313W WO2010118869A9 WO 2010118869 A9 WO2010118869 A9 WO 2010118869A9 EP 2010002313 W EP2010002313 W EP 2010002313W WO 2010118869 A9 WO2010118869 A9 WO 2010118869A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- film
- cavity
- transillumination area
- transillumination
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 11
- 230000005855 radiation Effects 0.000 claims description 17
- 239000011521 glass Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000003760 hair shine Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000006091 Macor Substances 0.000 description 1
- 229920000995 Spectralon Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/36—Scanning of motion picture films, e.g. for telecine
-
- 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
- G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
- H04N1/02885—Means for compensating spatially uneven illumination, e.g. an aperture arrangement
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/253—Picture signal generating by scanning motion picture films or slide opaques, e.g. for telecine
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/04—Scanning arrangements
- H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
- H04N2201/0404—Scanning transparent media, e.g. photographic film
- H04N2201/0406—Scanning slides
Definitions
- the invention relates to a device and a method for screening a film.
- a device for scanning a film with a light outlet is known, from which emerges a light beam, with which the film can be transilluminated.
- a transillumination area is provided, through which the film can be guided, so that the light beam can illuminate the film in the transillumination area.
- a designed as a halogen lamp light source is provided which generates at least one light beam which passes through condenser lenses, heat filter, a filter wheel and a gray filter and into an integration rod having a rectangular cross-section, wherein the side surfaces are ground.
- This integration rod is surrounded by a light-tight housing and has a light exit surface, which communicates with the light entry surface of a cross-section converter, which is connected to the integration rod by means of a sleeve.
- the integration rod is designed as a kaleidoscope rod. It produces a diffuse illumination with a relatively large exit angle. According to DE 200 12 748 U1, this has the advantage that scratches become less visible on the surface of the film facing away from the layer.
- the invention has the object to provide a device for transilluminating a film, which has a simple structural design and / or brings about the lowest possible stress on the film during the transillumination.
- the invention is based on the basic idea of using a hollow sphere whose inner surface is designed to be diffusely reflecting and which has a light inlet opening and an outlet opening.
- This diffuse light is received by a beam guide according to the device according to the invention. This makes it possible to arrange the hollow sphere at a location spaced from the transillumination area and to guide the diffuse light generated by means of the hollow sphere over the radiation conductor to a desired emission location.
- the inventive success can also be set in cavities that are not configured as a hollow sphere, for example in cavities whose Envelope is an ellipse.
- cavities whose Envelope is an ellipse.
- This will be described below with reference to the preferred form of the cavity, namely the hollow sphere, but without limiting the described possible embodiments of the invention to the fact that they can be realized only with a hollow sphere.
- the basic idea of the invention and in particular the embodiments described in more detail below can also be embodied with a cavity which is not designed as a hollow sphere.
- the hollow sphere is designed as a so-called Ulbricht sphere. This is particularly preferably coated inside diffusely reflecting and has on its surface at right angles to the light inlet opening to an outlet opening.
- the inner coating preferably consists of the best possible diffusely reflecting material, for example barium sulfate or Macor. Particular preference is given to using Spectralon as inner coating. With light in the infrared range, gold can also be used as a coating on the sandblasted inner surface.
- the diameter of the light inlet opening and the outlet opening is preferably smaller than the inner diameter of the ball, so that only such light enters the exit plane of the outlet opening, which has previously been reflected many times on the inner surface. In a preferred embodiment, the area of all openings together does not exceed 5% of the total surface area of the hollow sphere.
- the beam output end of the beam guide is arranged such that light emerging from the beam output end is radiated into the transillumination region such that a film located in the transillumination region can be transilluminated.
- the beam output end of the beam guide is then the light outlet from which the light beam exits, with the
- the beam guide thus represents a direct connection between the outlet opening and the transillumination area.
- additional optical elements such as lenses, filters, mirrors or other beam conductors may be provided between the radiation output end and the transillumination region.
- further optical means makes it possible to redirect the light beam exiting from the beam exit end in a different direction, if this is desired due to the spatial design of the device.
- changes can be made to a light beam emerging from the beam output end, such as focusing or filtering out different frequencies, using the optical means.
- the shape of the radiation input end of the beam guide is matched to the outlet opening of the hollow sphere such that the
- a plate for blocking light rays is provided within the hollow sphere in front of the light inlet opening, which radiate substantially straight through the light inlet opening. In this way, the number of reflections is increased, with which a light beam is reflected after entering through the light inlet opening within the hollow sphere before it exits the outlet opening. In addition, such a plate helps to avoid direct radiation from the light inlet opening to the outlet opening.
- the plate for blocking can be flat. However, it can also be concave or convex. As a result, light rays which radiate in substantially straight through the light inlet opening are deflected in a different direction.
- the hollow sphere has a measuring opening.
- a measuring device can measure characteristic properties of the light in the hollow sphere, for example sensors can be provided which measure the light intensity in different spectral regions of the light in the hollow sphere.
- the information about characteristic properties of the light in the hollow sphere can be used in the evaluation of the light rays which have transilluminated the film and which are recorded by a recording unit after the film has been illuminated.
- a plate for blocking light rays is provided within the hollow sphere in front of the measuring opening, which would radiate substantially straight through the measuring opening without the plate. This leads in particular to the fact that such a measuring device only the diffuse portion of the light in the
- a device for transilluminating a film with a light outlet, from which emerges a light beam with which the film can be transilluminated in a transillumination area.
- This device has a film supply and a film removal and a housing, on the outside of the transillumination region is arranged.
- a light source is disposed within the housing which generates the light beam exiting the light outlet. The light beam is guided through a beam guide, at least over part of the way between the light source and the transillumination area.
- the housing is rectangular or formed of two superimposed rectangles.
- the housing has a base and four formed as an outer side
- the housing is such that the fluoroscopy area, the film supply and the film removal on one side are provided.
- elements of the optionally present measuring and control technology of the device according to the invention are arranged within the housing.
- elements of an evaluation device or of a computer can be provided within the housing, with which electrical signals can be evaluated, which are generated by a recording unit provided according to a preferred embodiment, which records a light beam passing through the film in the transillumination area.
- the arrangement of the light source within the housing makes it possible to thermally isolate the light source from the transillumination area. This can prevent the heat generated by the light source from heating the film in the transillumination area. Likewise, it allows the inventive arrangement of the light source within the housing, that the light source itself by a
- Heating can be heated.
- the heating of the light source depending on the type of light source, can contribute to the fact that the light source generates light beams having the same characteristics, independently of the ambient conditions in which the apparatus according to the invention is located.
- a door may be provided on the housing which can be folded in front of the transillumination area provided on the outside of the housing in order to protect it from environmental influences. It can also be provided hinged doors.
- the idea of the arrangement of the light source within a housing according to the above-mentioned aspect of the invention is combined with the aspect of the invention to provide a hollow ball in an apparatus according to the invention, whose inner surface is diffusely reflective and which has a light entry opening and a Has outlet opening.
- the beam guide is designed as a glass rod.
- a glass rod as a beam guide offers the advantage that the geometry of the glass rod does not change or changes only negligibly with changes in the ambient conditions.
- other elements such as glass fibers or glass fiber bundles can be used as a beam guide.
- the glass rod has individual subsections each having a rectangular cross section, the direction of the longitudinal extent of a subsection extending from the direction of the longitudinal extension of an adjacent subsection. section and the transition from a subsection to an adjacent subsection is formed by a reflective oblique surface, which deflects a parallel to the longitudinal extension of the one section aligned light beam so that it is aligned in the adjacent subsection parallel to the longitudinal extent of the adjacent subsection.
- the use of such a glass rod makes it possible to guide the light beam generated by the light source, or the light beam emerging from the outlet opening of the hollow ball, along a path deviating from a straight path. This makes it possible, for example, to provide the light source or the hollow sphere at other locations of the device than those which are arranged on a straight line to the transillumination area. This increases the flexibility in the construction of the device according to the invention.
- At least one light-emitting diode is provided, which generates a light beam which enters the hollow sphere through the light inlet opening.
- At least one light-emitting diode which generates a light beam which enters in a straight line from the light-emitting diode in the beam input end of the beam guide, if the device according to the invention is formed according to a possible embodiment of the second aspect of the invention without a hollow sphere.
- the use of at least one light emitting diode as a light source enables the energy-efficient generation of a light beam.
- a plurality of light-emitting diodes are provided, which each generate a blue light beam. Additionally or alternatively, a plurality of light-emitting diodes is provided, each of which generates a red light beam.
- a plurality of light-emitting diodes is provided, each generating a green light beam.
- the selection of the light color of the light generated by the light source depends on the fluoroscopic task to be performed.
- the device according to the invention can be used to illuminate the film with diffuse, white light.
- the device according to the invention can be used to illuminate the film with light that lies only in a narrow frequency range of the color spectrum.
- the device according to the invention can be used to illuminate the film with infrared light.
- the device according to the invention has light-emitting diodes which generate a blue light beam and light-emitting diodes which generate a green light beam, as well as light-emitting diodes which generate a red light beam in a first frequency spectrum of the red region of the color spectrum and a further plurality of Light emitting diodes that generate a red light beam in a second frequency range of the red spectrum of the color spectrum.
- the device has a heater, the one and especially preferably all existing LEDs to a predetermined
- the frequency or wavelength of the light beam generated by a light-emitting diode may depend on the temperature of the light-emitting diode. This may result in differences in the characteristics of the light generated by the light source, depending on the environmental conditions, in particular at which ambient temperatures the device according to the invention is used.
- the LEDs can be heated to a predetermined temperature, which can be chosen so that it is not exceeded even under extreme environmental conditions, especially at particularly extreme ambient temperatures.
- the LED can be heated to temperatures of 70 0 C. This allows the device to always have the same characteristics regardless of the environmental conditions.
- a cooling can be provided which can cool the LEDs to a predetermined value.
- a current control of the LEDs is provided. This can be used to set the centroid wavelengths of the light emitted by the light emitting diodes.
- the device according to the invention and the method according to the invention are used for scanning a film, in particular for generating electrical, in particular preferably digital, signals which contain the optical information present on the film.
- a light source 2 is arranged, from the light and enters through a light inlet opening 3 in a hollow sphere 4.
- the hollow sphere 4 has an outlet opening 5.
- Light emerging from the outlet opening 5 from the hollow sphere enters the radiation input end of a glass rod 6.
- From the exit end 7 of the glass rod 6 emerges a light beam 8, which transilluminates a film 9 in a transillumination area 10.
- the glass rod has individual sections 11, 12, 13, 14 and 15, wherein the direction of the longitudinal extension of a section 11, 12, 13, 14 differs from the direction of the longitudinal extension of an adjacent section 12, 13, 14, 15 and the transition from a section 11, 12, 13, 14 to an adjacent TeN- section 12, 13, 14, 15 by a reflective inclined surface 16, 17, 18, 19 is formed, which is parallel to the longitudinal extent of the one section 11, 12, 13th , 14 aligned light beam deflects so that it is aligned in the adjacent section 12, 13, 14, 15 parallel to the longitudinal extent of the adjacent section 12, 13, 14, 15.
- the hollow sphere 4 has a measuring opening 20.
- a measuring device 21 is arranged such that it can measure characteristic properties of the light in the hollow sphere through the measuring opening.
- a plate 23 is provided for blocking light rays, which radiate substantially straight through the light inlet opening 3, or would radiate without the plate 23 substantially straight through the measuring port 20.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Facsimile Scanning Arrangements (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1118131.0A GB2482802A (en) | 2009-04-17 | 2010-04-15 | Device and method for transilluminating a film |
US13/264,869 US20120113670A1 (en) | 2009-04-17 | 2010-04-15 | Device and method for transilluminating a film |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009017535.0 | 2009-04-17 | ||
DE102009017535A DE102009017535A1 (de) | 2009-04-17 | 2009-04-17 | Vorrichtung und Verfahren zum Durchleuchten eines Films |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2010118869A2 WO2010118869A2 (de) | 2010-10-21 |
WO2010118869A9 true WO2010118869A9 (de) | 2010-12-16 |
WO2010118869A3 WO2010118869A3 (de) | 2011-03-10 |
Family
ID=42751024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/002313 WO2010118869A2 (de) | 2009-04-17 | 2010-04-15 | Vorrichtung und verfahren zum durchleuchten eines films |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120113670A1 (de) |
DE (1) | DE102009017535A1 (de) |
GB (1) | GB2482802A (de) |
WO (1) | WO2010118869A2 (de) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3699327A (en) * | 1971-07-28 | 1972-10-17 | North American Rockwell | Film viewer |
US4868383A (en) * | 1988-09-08 | 1989-09-19 | Eastman Kodak Company | Linear integrating cavity light source used for generating an intense beam of light |
US5146341A (en) * | 1990-07-27 | 1992-09-08 | Eastman Kodak Company | Film scanner having a dynamic film gate and an integrating cylinder incorporated therein |
US5153733A (en) * | 1990-07-27 | 1992-10-06 | Eastman Kodak Company | Film scanner |
US5079678A (en) * | 1990-12-24 | 1992-01-07 | Eastman Kodak Company | Integrating light source utilizing a fluorescing reflector for improved light emission and color balance |
US5565958A (en) * | 1995-04-13 | 1996-10-15 | Eastman Kodak Company | Linear light source for a film scanner |
JP3437352B2 (ja) * | 1995-10-02 | 2003-08-18 | キヤノン株式会社 | 照明光学系及び光源装置 |
US6191541B1 (en) * | 1998-10-05 | 2001-02-20 | Godfrey Engineering, Inc. | Solid state tail light for aircraft |
TW444247B (en) * | 1999-01-29 | 2001-07-01 | Toshiba Corp | Laser beam irradiating device, manufacture of non-single crystal semiconductor film, and manufacture of liquid crystal display device |
US6608293B2 (en) * | 1999-12-17 | 2003-08-19 | Agilent Technologies Inc. | Method of and apparatus for testing a photosensor |
DE20012748U1 (de) | 2000-07-22 | 2000-11-23 | Philips Corp Intellectual Pty | Beleuchtungsanordnung für einen Filmabtaster |
JP2002101274A (ja) * | 2000-09-26 | 2002-04-05 | Fuji Photo Film Co Ltd | 光源装置、画像読取装置及び画像読取方法 |
US7327408B1 (en) * | 2004-11-15 | 2008-02-05 | Lightmaster Systems, Inc. | Illuminator that generates linearly polarized light for microdisplay based light engine |
GB2473158B (en) * | 2005-09-06 | 2011-05-04 | Cintel Internat Ltd | Optical scatter correction for film scanners |
-
2009
- 2009-04-17 DE DE102009017535A patent/DE102009017535A1/de not_active Withdrawn
-
2010
- 2010-04-15 GB GB1118131.0A patent/GB2482802A/en not_active Withdrawn
- 2010-04-15 WO PCT/EP2010/002313 patent/WO2010118869A2/de active Application Filing
- 2010-04-15 US US13/264,869 patent/US20120113670A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE102009017535A1 (de) | 2010-10-21 |
GB2482802A (en) | 2012-02-15 |
GB201118131D0 (en) | 2011-11-30 |
WO2010118869A3 (de) | 2011-03-10 |
US20120113670A1 (en) | 2012-05-10 |
WO2010118869A2 (de) | 2010-10-21 |
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