DE10361559A1 - Projection arrangement for use in digital projector of e.g. LCD, has deflective unit with spherically formed reflective surface that is arranged approximately at forty five degrees with respect to principal axes of three lenses - Google Patents
Projection arrangement for use in digital projector of e.g. LCD, has deflective unit with spherically formed reflective surface that is arranged approximately at forty five degrees with respect to principal axes of three lenses Download PDFInfo
- Publication number
- DE10361559A1 DE10361559A1 DE2003161559 DE10361559A DE10361559A1 DE 10361559 A1 DE10361559 A1 DE 10361559A1 DE 2003161559 DE2003161559 DE 2003161559 DE 10361559 A DE10361559 A DE 10361559A DE 10361559 A1 DE10361559 A1 DE 10361559A1
- Authority
- DE
- Germany
- Prior art keywords
- projection
- polarizer
- deflecting element
- degrees
- projection arrangement
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/16—Optical objectives specially designed for the purposes specified below for use in conjunction with image converters or intensifiers, or for use with projectors, e.g. objectives for projection TV
-
- 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
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
-
- 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
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Die Erfindung betriff eine Projektionsanordnung, bevorzugt zur Anwendung in digitalen Projektoren auf LCD- oder LCoS – Basis, mit einem im Projektionsstrahlengang zwischen den Teiloptiken des Projektionsobjektivs angeordneten Polarisator, wobei der Polarisator als plattenförmiger, zur optischen Achse des Projektionsstrahlenganges gekippter, Polarisationsstrahlteiler ausgebildet ist.The Invention relates to a projection arrangement, preferably for use in digital projectors based on LCD or LCoS, with one in the projection beam path arranged between the partial optics of the projection lens polarizer, the polarizer being a plate-shaped, optical axis the projection beam path tilted, polarization beam splitter is trained.
Bekannt sind Projektionsobjektive mit integrierten Polarisatoren, bei denen sich der Polarisationsstrahlteiler in einem Glaswürfel (PBS) im telezentrischen Strahlengang befindet. Derartige Lösungen erweisen sich als ungünstig, da die Glaswege im telezentrischen Strahlengang einmal zu großen Bündeldurchmessern führen und zum anderen infolge der Spannungsdoppelbrechung den Polarisationszustand negativ beeinflussen.Known are projection lenses with integrated polarizers, in which the polarization beam splitter in a glass cube (PBS) located in the telecentric beam path. Such solutions prove unfavorable because the glass paths in the telecentric beam path once too large bundle diameters to lead and on the other hand due to the birefringence the polarization state influence negatively.
Ferner sind Drahtgitterpolarisatoren bekannt, die auch im nichttelezentrischen Strahlengang angeordnet werden können. Bei der Verwendung derartiger Polarisatoren werden verkippte Glasplatten als Träger der Polarisatoren eingesetzt. Dies ist im Projektionsstrahlengang sowohl in Reflexion als auch in Transmission möglich.Further Drahtgitterpolarisatoren are known, which are also in the non-telecentric Beam path can be arranged. When using such polarizers are tilted glass plates as a carrier used the polarizers. This is in the projection beam path possible both in reflection and in transmission.
Während bei Reflexion die Schwierigkeit darin besteht, die Fläche des Polarisators exakt eben auszubilden treten bei Verwendung in Transmission unerwünschte Bildfehler, insbesondere Astigmatismus auf.While at Reflection the difficulty is the area of the Polarisators form precisely even when used in transmission unwanted artifacts, especially astigmatism.
In
Nachteilig hierbei ist die zusätzliche Anordnung und Justierung des bildfehlerkorrigierenden Elementes, was mit einem relativ hohen Fertigungsaufwand verbunden ist.adversely Here is the additional Arrangement and adjustment of the image-correcting element, which is associated with a relatively high production cost.
Ausgehend davon liegt der Erfindung die Aufgabe zugrunde, eine Projektionsanordung mit integriertem Polarisator dahingehend weiterzuentwickeln, dass ohne zusätzliche Elemente die durch den Polarisator erzeugten Bildfehler beseitigt werden.outgoing One of the objects of the invention is a projection arrangement with integrated polarizer to the effect that without additional Elements eliminates the image errors generated by the polarizer become.
Diese Aufgabe wird durch eine Projektionsanordnung der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, dass zum Zwecke der Korrektur der durch den Polarisator erzeugten Abbildungsfehler zwischen dem Polarisator und der einer in Richtung der Projektionsfläche orientierten Teiloptik ein reflektives Umlenkelement angeordnet ist, wobei die Hauptachse der vor dem Umlenkelement angeordneten Teiloptik und die Hauptachse der dem Umlenkelement nachfolgend angeordneten Teiloptik auf der optisch wirksamen Fläche des Ümlenkelementes versetzt zueinander liegen.These The object is achieved by a projection arrangement of the type described above Type according to the invention thereby solved, for the purpose of correction, the one generated by the polarizer Aberration between the polarizer and the one in the direction the projection surface oriented partial optics arranged a reflective deflecting element is, wherein the main axis arranged in front of the deflecting element Partial optics and the main axis of the deflection arranged below Partial optics offset on the optically effective surface of the Ümlenkelementes each other lie.
Zweckmäßigerweise besitzt das reflektive Umlenkelement eine sphärisch ausgebildete Wirkfläche, die etwa 45 Grad zu den Hauptachsen der Teiloptiken angeordnet ist.Conveniently, has the reflective deflecting a spherically shaped effective surface, the arranged at about 45 degrees to the major axes of the partial optics.
Bedingt durch gezielt gewählte Krümmung des Umlenkelementes und den Versatz der Hauptachsen der Teiloptiken auf dem Umlenkelement werden Bildfehler, wie beispielsweise Astigmatismus, hervorgerufen durch die Anordnung des Polarisators im Projektionsobjektiv, kompensiert. Die Anordnung zusätzlicher Korrekturelemente im Projektionsstrahlengang ist nicht erforderlich.conditioned through specifically chosen Curvature of the Deflection element and the offset of the main axes of the partial optics on the deflector image errors, such as astigmatism, caused by the arrangement of the polarizer in the projection lens, compensated. The arrangement of additional Correction elements in the projection beam path is not required.
Denkbar ist auch, das Umlenkelement keilförmig auszubilden, wobei die Hauptachsen der Teiloptiken auf der inneren, in Richtung der Teiloptiken reflektierend ausgebildeten Wirkfläche, versetzt zueinander liegen.Conceivable is also to form the deflection wedge-shaped, wherein the Main axes of the sub-optics on the inner, reflecting in the direction of the sub-optics trained effective area, offset from one another.
Eine derartige Lössung hat den Vorteil, dass sich die optischen Wege zwischen den Teiloptiken verkürzen lassen, was wiederum zur Baugrößenreduzierung des Projektionsobjektivs führt.A Such a solution has the advantage that the optical paths between the partial optics can be shortened, which in turn reduces the size of the frame of the projection lens.
Im folgenden wird die Erfindung anhand von Ausführungsbeispielen näher erläutert. Gleiche Bezugszeichen in den einzelnen Figuren bezeichnen dabei gleiche Elemente. Im einzelnen zeigen:in the Following, the invention will be explained in more detail with reference to embodiments. Same Reference numerals in the individual figures indicate the same Elements. In detail show:
Über ein
reflektives, geringfügig
sphärisch ausgebildetes
Umlenkelement
Die
Teiloptik
Der
Versatz V bewirkt in Verbindung mit der geringfügig sphärisch ausgebildeten Wirkfläche des Umlenkelementes
Eine
andere Ausführungsform
der Gestaltung des keilförmigen
Umlenkelementes
- 1, 2, 31, 2, 3
- Teiloptikpartial optics
- 44
- Polarisatorpolarizer
- 5, 85, 8th
- Hauptachsemain axis
- 6, 96 9
- Umlenkelementdeflecting
- 77
- polarisierter Strahlengangpolarized beam path
- VV
- Versatzoffset
- αα
- Kippwinkel Polarisatortilt angle polarizer
- ββ
- Winkel Umlenkelementangle deflecting
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003161559 DE10361559A1 (en) | 2003-12-19 | 2003-12-19 | Projection arrangement for use in digital projector of e.g. LCD, has deflective unit with spherically formed reflective surface that is arranged approximately at forty five degrees with respect to principal axes of three lenses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003161559 DE10361559A1 (en) | 2003-12-19 | 2003-12-19 | Projection arrangement for use in digital projector of e.g. LCD, has deflective unit with spherically formed reflective surface that is arranged approximately at forty five degrees with respect to principal axes of three lenses |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10361559A1 true DE10361559A1 (en) | 2005-07-14 |
Family
ID=34673081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003161559 Withdrawn DE10361559A1 (en) | 2003-12-19 | 2003-12-19 | Projection arrangement for use in digital projector of e.g. LCD, has deflective unit with spherically formed reflective surface that is arranged approximately at forty five degrees with respect to principal axes of three lenses |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10361559A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19907345A1 (en) * | 1999-02-20 | 2000-09-21 | Zeiss Carl Jena Gmbh | Raster image display device for computer screen, includes arrangement for centralizing image at output of projection optics |
DE10020458A1 (en) * | 1999-04-26 | 2001-03-29 | Samsung Electronics Co Ltd | Reflection projector |
DE19948542A1 (en) * | 1999-10-08 | 2001-05-23 | Zeiss Carl Jena Gmbh | Arrangement in which light is directed onto a surface from a light source |
US20020093628A1 (en) * | 2001-01-12 | 2002-07-18 | Lewis Isabella T. | System and method for using off-axis illumination in a reflective projection system |
DE69713081T2 (en) * | 1996-03-29 | 2003-01-23 | Minnesota Mining And Mfg. Co., Saint Paul | POLARIZATION LIGHTING SYSTEM FOR LCD PROJECTOR |
EP1291681A1 (en) * | 2001-09-04 | 2003-03-12 | Canon Kabushiki Kaisha | Mirror projection system for oblique projection |
-
2003
- 2003-12-19 DE DE2003161559 patent/DE10361559A1/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69713081T2 (en) * | 1996-03-29 | 2003-01-23 | Minnesota Mining And Mfg. Co., Saint Paul | POLARIZATION LIGHTING SYSTEM FOR LCD PROJECTOR |
DE19907345A1 (en) * | 1999-02-20 | 2000-09-21 | Zeiss Carl Jena Gmbh | Raster image display device for computer screen, includes arrangement for centralizing image at output of projection optics |
DE10020458A1 (en) * | 1999-04-26 | 2001-03-29 | Samsung Electronics Co Ltd | Reflection projector |
DE19948542A1 (en) * | 1999-10-08 | 2001-05-23 | Zeiss Carl Jena Gmbh | Arrangement in which light is directed onto a surface from a light source |
US20020093628A1 (en) * | 2001-01-12 | 2002-07-18 | Lewis Isabella T. | System and method for using off-axis illumination in a reflective projection system |
WO2002061503A1 (en) * | 2001-01-12 | 2002-08-08 | Aurora Systems, Inc. | System and method for using off-axis illumination in a reflective projection system |
EP1291681A1 (en) * | 2001-09-04 | 2003-03-12 | Canon Kabushiki Kaisha | Mirror projection system for oblique projection |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3072006B1 (en) | Imaging optical unit and display device comprising such an imaging optical unit | |
DE69523125T2 (en) | LIQUID CRYSTAL DISPLAY PROJECTION SYSTEMS | |
DE102013219626B4 (en) | Spectacle lens for a display device to be placed on the head of a user and an image-generating display device and display device with such a spectacle lens | |
EP0950208B1 (en) | Optical device for scanning a beam in two axes that are substantially perpendicular to each other | |
DE102008051252B4 (en) | Projection lens and projector | |
DE8817126U1 (en) | Prism system for a stereoscopic microscope | |
WO2015011288A1 (en) | Spectacle lens and display device comprising such a spectacle lens | |
DE3837553C2 (en) | ||
DE19929045C1 (en) | Deflection system for an oblique view endoscope and an oblique view endoscope with such a deflection system | |
EP0275532B1 (en) | Optical-mechanical deflector | |
WO2017050531A1 (en) | Optical system for field mapping and/or pupil mapping | |
DE10325867B4 (en) | projection device | |
DE10361559A1 (en) | Projection arrangement for use in digital projector of e.g. LCD, has deflective unit with spherically formed reflective surface that is arranged approximately at forty five degrees with respect to principal axes of three lenses | |
EP3011393B1 (en) | Scanning device | |
DE102004001389B4 (en) | Arrangement and device for minimizing edge discoloration in video projections | |
DE3785734T2 (en) | Projection lens system. | |
WO2007045413A1 (en) | Optical imaging system, especially for microscopes | |
DE102008009914B4 (en) | Tubus unit for microscopes | |
DE109091C (en) | ||
DE10225265A1 (en) | Projection objective system for microlithography uses set of lenses and mirrors and beam divider with tilting control and aspherical top, front and rear surfaces | |
DE102008041991A1 (en) | Illuminating system for use in projection exposure system, has curved field generation module with optically active surfaces which are designed such that curved light-bundle is formed by stream deflection of incident light-bundle | |
EP2930548B1 (en) | Device for microscopic applications | |
EP3978983A1 (en) | Projection system | |
DE3928354A1 (en) | PROJECTION LENS | |
DE10246828A1 (en) | Objective, in particular projection objective for microlithography used in the manufacture of semiconductor components has one housing for optical elements provided with mating surfaces |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |