DE102005049715B3 - Digital image sensor illumination arrangement, has diffuser screen whose distance from light emitting surface, thickness and strewing angle are measured so that intensity bled-off curve of beam cuts with specific intensity value - Google Patents
Digital image sensor illumination arrangement, has diffuser screen whose distance from light emitting surface, thickness and strewing angle are measured so that intensity bled-off curve of beam cuts with specific intensity value Download PDFInfo
- Publication number
- DE102005049715B3 DE102005049715B3 DE102005049715A DE102005049715A DE102005049715B3 DE 102005049715 B3 DE102005049715 B3 DE 102005049715B3 DE 102005049715 A DE102005049715 A DE 102005049715A DE 102005049715 A DE102005049715 A DE 102005049715A DE 102005049715 B3 DE102005049715 B3 DE 102005049715B3
- Authority
- DE
- Germany
- Prior art keywords
- light
- integrator
- intensity
- distance
- thickness
- 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 - Fee Related
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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0994—Fibers, light pipes
-
- 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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0905—Dividing and/or superposing multiple light beams
-
- 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
- G03B21/13—Projectors for producing special effects at the edges of picture, e.g. blurring
-
- 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
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2013—Plural light sources
-
- 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
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
-
- 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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0933—Systems for active beam shaping by rapid movement of an element
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Die Erfindung betrifft eine Anordnung zur homogenen Ausleuchtung einer Ebene, bei der mehrere Lichtbündel aus mehreren Lichtquellen jeweils einen Integratorstab passieren, wobei die Lichtquellen und die Integratorstäbe matrixförmig angeordnet sind, und Lichtaustrittsflächen der Integratorstäbe einen Abstand voneinander haben und diese dadurch durch nicht Licht leitende Bereiche voneinander getrennt sind sowie bei der in einem Abstand von der Lichtaustrittsfläche der Integratorstäbe eine Einrichtung zur Überlagerung der Lichtbündel angeordnet ist.The The invention relates to an arrangement for the homogeneous illumination of a Level at which several light bundles pass one integrator rod from each of several light sources, wherein the light sources and the integrator rods are arranged in a matrix, and light exit surfaces of the integrator rods have a distance from each other and thereby by not light conductive areas are separated from each other as well as in one Distance from the light exit surface the integrator bars a device for overlaying the light beam is arranged.
Anwendung
findet die erfindungsgemäße Anordnung
insbesondere zur Ausleuchtung digitaler Bildgeber, wie diese beispielsweise
in
Bekannt
ist die Verwendung von so genannten Integratorstäben zur Homogenisierung der
Ausleuchtung in Beleuchtungsanordnungen von digitalen Projektoren,
wie diese beispielsweise in
Um
großflächige Modulatoren
auszuleuchten, werden gemäß
In
In
Die Erfindung soll das Problem lösen, den Aufwand bei der Herstellung von Integrator-Arrays zu verringern. Deren Einsatz in Anordnungen zur Ausleuchtung einer Ebene soll mit geringerem Aufwand und Platz sparend zu einer gleichmäßigeren Ausleuchtung einer Ebene führen.The Invention is intended to solve the problem to reduce the effort in the production of integrator arrays. Their use in arrangements for illuminating a plane should with less effort and space-saving to a more even Illumination of a plane lead.
Die Lösung der Aufgabe gelingt erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruchs 1.The solution the object succeeds according to the invention with the characterizing features of claim 1.
Die Unteransprüche 2 bis 4 sind vorteilhafte Ausgestaltungen des Hauptanspruches.The under claims 2 to 4 are advantageous embodiments of the main claim.
Erfindungsgemäß ist die Einrichtung zur Überlagerung der Lichtbündel, die in Lichtausbreitungsrichtung gesehen nach den Lichtaustrittsflächen der Integratorstäbe angeordnet ist, eine Streuscheibe, deren Abstand a von der Lichtaustrittsfläche, Dicke d und Streuwinkel ψ so bemessen sind, dass sich die Intensitätsrandabfallkurven der sich überlagernden Lichtbündel zweier benachbarter Integratorstäbe bei Intensitätswerten von 50% der Ausgangsintensität schneiden.According to the invention Device for overlay the light bundle, in the light propagation direction after the light exit surfaces of the integrator rods is arranged, a diffusing screen whose distance a from the light exit surface, thickness d and scattering angle ψ like this are dimensioned that the intensity edge decay curves of the overlapping light beam two adjacent integrator bars at intensity values of 50% of the initial intensity to cut.
Dabei kann die Toleranz der Intensitätsrandabfallkurven bis etwa + –2,5% betragen, da Abweichungen erst ab etwa größer 5% vom menschlichen Auge sichtbar wahrgenommen werden.there can the tolerance of intensity edge decay curves to about + -2.5% Be as deviations only from about greater than 5% of the human eye be perceived visibly.
Die Lichtquellen sind vorzugsweise LED's oder Laserdioden. Es werden sowohl einzelne Bauelemente als auch Arrays dieser Lichtquellen eingesetzt. Es können aber auch andere miniaturisierte Strahlungsquellen Anwendung finden, z.B. Festkörperlaser oder Halogenlampen.The Light sources are preferably LEDs or laser diodes. It will be both individual components as well as arrays of these light sources used. It can but also other miniaturized radiation sources find application, e.g. Solid-state lasers or halogen lamps.
Insbesondere bei der Verwendung von Lasern ist vorgesehen, dass die Streuscheibe rechtwinklig zur optischen Achse oszillierend oder drehbar bewegbar ist, um störende Speckel zu vermeiden.In particular, when using lasers, it is provided that the lens is oscillating or rotatable at right angles to the optical axis is movable to avoid disturbing speckles.
Vorzugsweise liegt der Abstand b der Lichtaustrittsflächen zweier Integratorstäbe im Bereich zwischen 0,1 mm bis 0,5 mm, die Streuscheibe steht in dem Abstand a im Bereich zwischen 0,1 mm bis 1 mm vor den Lichtaustrittsflächen und die Streuscheibe hat eine Dicke d im Bereich zwischen 0,3 mm bis 2,0 mm sowie einen Streuwinkel ψ im Bereich zwischen 10° und 40° (Halbwertswinkel). Die angegebenen Grenzen der Werte können jedoch auch kleiner oder größer bemessen sein, wobei im Einzelfall die Grundgedanken der Erfindung verwirklicht sind und die Funktionsfähigkeit der Erfindung gegeben ist.Preferably the distance b of the light exit surfaces of two integrator bars is in the range between 0.1 mm to 0.5 mm, the lens is in the distance a in the range between 0.1 mm to 1 mm in front of the light exit surfaces and the diffuser has a thickness d in the range between 0.3 mm to 2.0 mm and a scattering angle ψ im Range between 10 ° and 40 ° (half-value angle). However, the specified limits of the values can also be smaller or bigger be, in individual cases, the principles of the invention are realized and the functionality the invention is given.
Die Erfindung wird nachfolgend an Hand von Ausführungsbeispielen beschrieben. Es zeigen:The The invention will be described below with reference to exemplary embodiments. Show it:
Um
zu erreichen, dass sich die Intensitäten benachbarter Integratorstäbe
Das
heißt,
zwischen benachbarten Integratorstäben ist ein Spalt mit der Breite
b vorgesehen, wie dies in
Aufgrund
der Wahl eines Abstandes a zwischen den Lichtaustrittsflächen
Bei
einer Dimensionierung der Breite b des Spaltes zwischen den Lichtaustrittsflächen
Die Dimensionierung erfolgt mit Hilfe eines handelsüblichen Optik-Rechenprogrammes. Dabei sind vorzugsweise die Breite b des Spaltes sowie Position und Eigenschaften der Streuscheibe als variable Parameter a, ψ in die Optimierung der Beleuchtungsanordnung einbezogen. Der Randabstand der einzelnen Integratoren ist durch technologische Grenzen bei der Herstellung des Integratorarrays vorgegeben.The Dimensioning takes place with the aid of a commercially available optical computer program. In this case, preferably the width b of the gap and position and properties of the lens as variable parameters a, ψ in the Optimization of the lighting arrangement included. The edge distance of the individual integrators is by technological limits predetermined the production of the integrator array.
Der Lösung des Problems liegen Modelle zugrunde, die mit dem Optik-Design Programm "zemax" im nichtsequentiellen Modus erzeugt werden. Es wurden Modelle erzeugt, für deren exakte Lösung die bestimmenden Parameter (Spaltbreite b, Position a und Eigenschaften ψ der Streuscheibe) in einer entsprechend formulierten Merrit-Funktion in die Optimierung der Beleuchtungsanordnung einbezogen wurden.Of the solution The problem is based on models that come with the optics design program "zemax" in non-sequential Mode are generated. Models have been created for which exact solution the determining parameters (gap width b, position a and properties ψ of the lens) in a suitably formulated merit function in the optimization the lighting arrangement were included.
Im
vorliegenden Fall hat der Abstand b eine Spaltbreite von 0,2 mm.
Die Streuscheibe
Die
Integratorstäbe
- 11
- Lichtquellelight source
- 22
- Integratorstabintegrator rod
- 33
- Streuscheibediffuser
- 44
- digitaler Bildgeberdigital imager
- 55
- Projektionsoptikprojection optics
- 66
- Projektionsflächeprojection
- 77
- Integrator-ArrayIntegrator array
- 88th
- LichteintrittsflächeLight entry surface
- 99
- LichtaustrittsflächeLight-emitting surface
- 1010
- Überlappungsbereich innerhalb der Streuscheibeoverlap area inside the lens
- aa
- Abstand Lichtaustrittsfläche – Streuscheibedistance Light exit surface - diffuser
- bb
- Abstand zwischen zwei Integratorstäbendistance between two integrator bars
- dd
- Dicke der Streuscheibethickness the diffuser
- YY
- Streuwinkel der Streuscheibescattering angle the diffuser
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005049715A DE102005049715B3 (en) | 2005-10-18 | 2005-10-18 | Digital image sensor illumination arrangement, has diffuser screen whose distance from light emitting surface, thickness and strewing angle are measured so that intensity bled-off curve of beam cuts with specific intensity value |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005049715A DE102005049715B3 (en) | 2005-10-18 | 2005-10-18 | Digital image sensor illumination arrangement, has diffuser screen whose distance from light emitting surface, thickness and strewing angle are measured so that intensity bled-off curve of beam cuts with specific intensity value |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005049715B3 true DE102005049715B3 (en) | 2007-05-10 |
Family
ID=37950159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005049715A Expired - Fee Related DE102005049715B3 (en) | 2005-10-18 | 2005-10-18 | Digital image sensor illumination arrangement, has diffuser screen whose distance from light emitting surface, thickness and strewing angle are measured so that intensity bled-off curve of beam cuts with specific intensity value |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005049715B3 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10013254A1 (en) * | 2000-03-17 | 2001-10-04 | Friz Biochem Gmbh | New apparatus, useful for detecting biomolecules and polymers, comprises array of samples containing specific molecules with separate light sources and system for detecting which samples interact with molecule to be detected |
US6318863B1 (en) * | 1999-01-21 | 2001-11-20 | Industrial Technology Research Institute | Illumination device and image projection apparatus including the same |
EP1418765A1 (en) * | 2002-11-07 | 2004-05-12 | Sony International (Europe) GmbH | Illumination arrangement for a projection system |
WO2005096096A1 (en) * | 2004-03-05 | 2005-10-13 | Optics 1, Inc | Flashlight for forming uniform image |
-
2005
- 2005-10-18 DE DE102005049715A patent/DE102005049715B3/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6318863B1 (en) * | 1999-01-21 | 2001-11-20 | Industrial Technology Research Institute | Illumination device and image projection apparatus including the same |
DE10013254A1 (en) * | 2000-03-17 | 2001-10-04 | Friz Biochem Gmbh | New apparatus, useful for detecting biomolecules and polymers, comprises array of samples containing specific molecules with separate light sources and system for detecting which samples interact with molecule to be detected |
EP1418765A1 (en) * | 2002-11-07 | 2004-05-12 | Sony International (Europe) GmbH | Illumination arrangement for a projection system |
WO2005096096A1 (en) * | 2004-03-05 | 2005-10-13 | Optics 1, Inc | Flashlight for forming uniform image |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of patent without earlier publication of application | ||
8364 | No opposition during term of opposition | ||
R081 | Change of applicant/patentee |
Owner name: JABIL OPTICS GERMANY GMBH, DE Free format text: FORMER OWNER: CARL ZEISS JENA GMBH, 07745 JENA, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |