WO2005103813A1 - Wide angle projection lens - Google Patents
Wide angle projection lens Download PDFInfo
- Publication number
- WO2005103813A1 WO2005103813A1 PCT/US2005/012828 US2005012828W WO2005103813A1 WO 2005103813 A1 WO2005103813 A1 WO 2005103813A1 US 2005012828 W US2005012828 W US 2005012828W WO 2005103813 A1 WO2005103813 A1 WO 2005103813A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image
- wide angle
- stage
- lens stage
- lens system
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
-
- 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
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
-
- 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
- G03B21/06—Projectors or projection-type viewers; Accessories therefor affording only episcopic projection
-
- 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
- G03B21/10—Projectors with built-in or built-on screen
-
- 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
- G03B21/142—Adjusting of projection optics
-
- 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
- G03B21/28—Reflectors in projection beam
-
- 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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
-
- 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
- G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
Definitions
- the embodiments of the present disclosure relate generally to image display devices, and more particularly, to a lens for a projection device.
- FIG. 1 is a schematic illustration of a front projection display system according to an embodiment of the present disclosure.
- Fig. 2 is a block diagram of a lens system that may be used in the front projection display system of Fig. 1 according to an embodiment of the present disclosure.
- FIG. 3 is a schematic illustration of a lens system that may be used in the front projection display system of Fig. 1 according to an embodiment of the present disclosure.
- FIG. 4 is a schematic illustration of a front projection display system with a display device in an offset down position according to an embodiment of the present disclosure.
- Fig. 5 illustrates a display device with the lens system shown in Fig.
- FIG. 1 illustrates schematically, at 100, a front projection display system.
- Front projection display device may include a display device, such as a projector 110, and a viewing surface, such as a screen 120.
- Screen 120 may include a screen surface 130.
- Projector 110 may be configured to generate an image and to project the image on screen surface 130.
- the screen 120 may reflect the projected image and direct it toward a viewer (not shown).
- screen surface 130 may scatter light so that the projected image is visible to the viewer.
- projector 110 may include a light source and/or image source, as generally indicated at 112.
- the image source 112 may include image- generation devices, including, but not limited to, digital micromirror devices (DMD), microelectromechanical systems (MEMS), grating light valve devices (GLV), liquid crystal display devices (LCD), liquid crystal on silicon devices (LCOS), etc.
- DMD digital micromirror devices
- MEMS microelectromechanical systems
- GLV grating light valve devices
- LCD liquid crystal display devices
- LCOS liquid crystal on silicon devices
- Projector 110 further may include a lens system 114 which may be integrated within projector 110 or otherwise coupled to projector 110 such that an image generated by the light source or image source is projected to a screen surface 130 as indicated by arrows 140, 150. The image may be displayed to a viewer as indicated by arrows 160, 170.
- a lens system 114 which may be integrated within projector 110 or otherwise coupled to projector 110 such that an image generated by the light source or image source is projected to a screen surface 130 as indicated by arrows 140, 150. The image may be displayed to a viewer as indicated by arrows 160, 170.
- Screen 120 may be configured to reflect the projected image and direct it towards a viewer.
- screen surface 130 may include various surface features to improve display of the image to a viewer.
- screen surface 130 may be any suitable image display surface, including, but not limited to a wall, a coated surface or other specialized surface, such as a glass-bead screen surface, a bumpy screen surface, etc.
- screen 120 may be a Fresnel lens type screen, however other suitable screens or surfaces, such as a wall or other suitable viewing surface, may be used.
- projector 110 may be configured to project light at a steep angle from the horizontal to screen surface 130 of screen 120.
- projector 110 may be offset from screen 120 such that light is projected onto screen surface 130 at a substantially steep angle.
- light may be projected at an angle between approximately 30 to 80 degrees from the horizontal. It should be appreciated that in other embodiments, the light may be projected to screen surface 130 at other angles, including but not limited to angles between 20 to 90 degrees or angles there between.
- the angle of reflection may vary along screen surface 130.
- Rays 140 and 150 illustrate exemplary paths that light may travel from projector 110 to screen 120.
- ray 140 is shown reflecting and diffusing off of screen surface 130 at an angle 145.
- Angle 145 may be any suitable angle, such as an 80-degree angle.
- ray 150 is shown reflecting off of the screen at angle 155.
- Angle 155 may be any suitable angle, for example angle 155 may be a 30-degree angle.
- Rays 160 and 170 illustrate the path that light may travel after reflecting off of screen 120. Rays 160 and 170 show the image being reflected to a viewer (not shown).
- projector 110 may include a wide-angle lens system. In one exemplary wide angle lens system, illustrated schematically in Fig.
- the wide angle lens system may include a relay lens stage 210 and a wide angle lens stage 220.
- Relay lens stage 210 may be configured to generate and project an intermediate image 230 to wide angle lens stage 220.
- Wide angle lens stage 220 may be configured to generate and project corrected image 240 for display to screen 250 (which can include screen 120, for example).
- Intermediate image 230 may be considered a distorted image (1(D)) such that wide angle lens stage 220 receives a predistorted image.
- the distortion caused by wide angle lens stage 220 may be such that the distortion of intermediate image 230 is substantially compensated for (substantially cancelled) by wide angle lens stage 220 to generate image (l(-D)).
- the reference (l(-D)) is intended to indicate an image substantially without the distortion of the intermediate image 230. It should be appreciated that the distortion may be to the image shape and/or the focal plane.
- the term "distortion,” is intended to include any change from the initial image inputted into the predistortion system.
- a distortion in the image may include an alteration in the shape of at least a portion of the image.
- the term "predistortion" is intended to include an intentional distortion of an optical image that compensates for (i.e. is substantially equal and opposite to) distortion generated by wide angle lens stage 220. It will be appreciated that the predistorted image may be presented in a variety of different configurations depending on the type of downstream distortion for which the predistorted image is intended to compensate.
- the system described in Fig. 2 may include additional optics to direct the image along a desired image or light path.
- the system may include one or more direction changing optics, such as those indicated at 260.
- Such direction changing optics, 260 may be configured to direct an image along a desired light path.
- Direction changing optics 260 may be any suitable optical devices, including, but not limited to mirrors, prisms, etc. which are adapted to redirect light in a preselected direction.
- direction changing optics 260 may alter the light path by any suitable angle, such as, but not limited to 30°, 60°, 90°, 120°, 180°, 210°, etc.
- Direction changing optics 260 may include one or more optical elements.
- direction changing optics may include a set of two 90 degree fold mirrors, one, two or three prisms, a combination of mirrors and prisms, etc.
- the light path is shown changing directions 180 degrees from the initial light output from the relay lens stage.
- the intermediate image is directed along an optical path that changes direction by substantially 180 degrees prior to entering the wide angle lens stage.
- the direction of the input light is substantially opposite the direction of the light output to the display or screen.
- direction changing optics 260 are shown interposed the relay lens stage 210 and wide angle lens stage 220, such direction changing optics 260 may be incorporated within relay lens stage 210 or wide angle lens stage 220. Alternatively, and or additionally, such direction changing optics may be prior to or subsequent to either one or both of relay lens stage 210 or wide angle lens stage 220.
- Fig. 3 is a schematic illustration of an exemplary lens system, indicated generally at 300, which may be used in the display system of Fig. 1. As illustrated, the system may include an image-generation device, e.g. DMD 310, adapted to provide an image to the lens system. An image can be provided to DMD 310 in any manner known in the art.
- DMD 310 image-generation device
- DMD 310 may be configured to selectively reflect light from any suitable light source (not shown) to the lens system.
- Other types of devices e.g., microelectromechanical systems (MEMS), grating light valve (GLV), liquid crystal display (LCD), liquid crystal on silicon (LCOS), etc.
- MEMS microelectromechanical systems
- GLV grating light valve
- LCD liquid crystal display
- LCOS liquid crystal on silicon
- the image path includes multiple folds. Specifically, the image path is directed through a first relay lens stage 315, through direction-changing optics 320 and 330 to a second relay lens stage 340, and then to a wide angle lens system, including a wide angle lens stage or group 345.
- second relay lens stage 340 may be part of wide angle lens stage 345.
- planar direction changing elements 320, 330 such as two fold mirrors or prisms, may be used so that the direction of light is changed or turned by approximately 180 degrees.
- each element 320 and 330 may provide an approximately 90° fold of the image path.
- the two fold angles may be different from each other, but still produce an approximately 180 degree change in the image path.
- the multiple fold arrangement may be adapted to reverse the light direction such that output light is redirected substantially back toward the direction that the input light entered the system (albeit different horizontal planes).
- Such a configuration may make the lens system substantially compact such that the device may require less space and be contained within a small package or enclosure.
- Other optical devices and number of folds of the image path may be used without departing from the scope of the invention.
- other combinations of prisms and/or mirrors may be used to alter the image direction 180 degrees or more.
- the fold is not required.
- other fold angles for example, 45°, 30°, 135°, 180°, etc. could be used.
- the distortion of the intermediate image may be substantially corrected using wide angle lens stage 345 which may produce distortion substantially equal and opposite to the distortion of the intermediate image, thus canceling the distortion of the intermediate image.
- the distortion of the intermediate image may be created by the use of a relay lens stage, such as one of or both of the first and second relay lens stages 315, 340.
- a relay lens stage such as one of or both of the first and second relay lens stages 315, 340.
- Each of these lens systems may be considered to have a predistortion system, such as the first relay lens stage and/or the second relay lens stage (315, 340), which is configured to create a predistorted image (or intermediate image) from an original image.
- lens systems may further be understood to have a receiving projection system, such as the wide angle lens system 345, which is configured to receive the predistorted image and distort the image to substantially cancel the predistortion of the predistorted image and to project a substantially non-distorted image corresponding to the original image.
- lens stages 315 and 340 may include any number of suitable lenses, based on, for example, the desired distortion of the intermediate image, or the overall size of the lens system.
- the distortion to be caused by relay lens stages 315 and 340 may be substantially equal and opposite the distortion caused by wide angle lens stage 345.
- the intermediate image is approximately a half circle image in a warped image plane. In alternate embodiments, other types of distortion may be used.
- the distorted intermediate image may be a generally circular image.
- the image plane may or may not be warped.
- Wide angle lens stage 345 projects the distorted intermediate image to a screen for display. Because wide angle lens stage 345 causes distortion to the image to be projected and the intermediate image has been predistorted by relay lens stages 315 and 340, the resulting image projected by the lens system has little or no distortion.
- the lens system may be configured to direct the image to a screen at a steep angle.
- the lens system may be configured to direct the light at an angle of approximately 30 to 80 degrees toward a screen. The light may impinge the screen on a first side and be redirected back toward a viewer on the same side (first side) of the screen.
- a compact and lightweight projection device may be produced.
- DMD 310 is offset from the optic axis of lens stages 315 and/or 340 such that only a portion (e.g., between 90% and 80%, 80%-70%, 70%-60%, 60%-50%, 50%-40%, 40%-30%, 30%-20%, 20%-10%. 80%-40%, 40%-10%, or there between) of the available lens field is used.
- the image from DMD 310 may be projected by lens stages 315, 340, and/or 345 in the upper portion of the lens field to the screen.
- a lower portion of the lens field may be used to project an image to the screen, if desired.
- wide angle lens stage 345 provides a field angle of greater than 100°.
- lens stage 345 can have a field angle of 152° or more. It should be understood that lenses having greater or lesser field angles also may be used.
- the field angle can also be 130° or more. In one embodiment, the field angle is 153°; however, other angles can be provided.
- the optical axis of wide angle lens stage 345 is substantially perpendicular to the screen so that keystone, or trapezoidal distortion may be reduced.
- the image may be projected to a screen.
- the screen may be a portion of a Fresnel lens type screen.
- a Fresnel lens type screen with multiple concentric grooves having one or more predetermined groove angles may be used. Further, there may be regions or zones with different groove angles, pitches, or groove depths.
- the Fresnel lens type screen can be designed to accommodate light received from a steep angle, such as in the system shown in Fig. 1. It should be noted that the angle of the grooves and the reflection angle may vary to accommodate the angle of the input light.
- the screen may be a lenticular screen, a single-sided Fresnel lens type screen, a linear prism sheet / a double-sided lenticular screen, a glass bead screen, etc.
- Each of the above screens may be configured to receive light from a steep angle, such as from the wide-angle lens system 300 described above.
- Each screen may further be configured with surface topographies that are adapted to reflect light back to a viewer along a horizontal plane or other suitable viewing plane.
- such screens may include surface topographies configured to reduce stray ambient light, which may substantially effect production of the image.
- front projection display system may include a display device 405 and a screen 410.
- Display device 405 may include, but is not limited to, an image generation device 415 (such as a DMD, DLP, LCD, LCOS, etc.), and a lens system.
- the lens system may be any suitable lens system such as, but not limited to, the lens system illustrated and described in relation to Fig. 3.
- the lens system may include a relay lens stage 420, direction changing optics 430, 440 and a wide angle lens stage 450.
- image generation device 415 may generate an image and direct the image along an image path or light path 460.
- Direction changing optics 430, 440 may redirect the image path such that the light direction is reversed from a first direction to a second direction.
- the second direction may be substantially opposite the first direction.
- relay lens stage 420 may be positioned on a plane below wide angle lens stage 450.
- wide angle lens stage 450 may be substantially disposed in a first plane and relay lens stage 420 substantially disposed in a second plane.
- the first plane of wide angle lens stage 450 may be above the second plane of relay lens stage 420, as shown in Fig. 4.
- the optical axis of relay lens stage 420 may be below the optical axis of wide angle lens stage 450.
- Desired viewing level of an image on a screen 410 typically requires that the image be projected above the plane or the optical axis 470 of the lens of the display device.
- Image offset is the position of the projected image relative to the optical axis of the lens of the display device.
- the configuration of the lens system including relay lens stage 420 and wide angle lens stage 450 may enable the image offset to be offset up as desired. In prior systems, offsetting the image up required positioning the display device (specifically the image generation device) above the optical axis.
- the display device (and specifically the image generation device) had to be "offset up.” This configuration was due to the production of the intermediate image within the system. Without folding or otherwise altering the image path, a display device with an offset down would result in an image offset down. Thus, such systems required the offset of the display device to be up to ensure an image offset up.
- the offset down position of the display device may be desired due to the type or operation of the image generation device.
- the present configuration of the display device enables the display device to be offset down.
- the image generation device 415 may be positioned below optical axis 470. Due to direction changing optics 430 and 440, the image path 460 is folded and the image path direction substantially reversed. Such folding and reversing of the image path enables the offset of the image-generation device to be down (below the optical axis 470 of the display device) while still maintaining an image offset up (above the optical axis of the display device).
- a projection display device including an image generation device configured to generate an image.
- the projection display device further may include a wide angle lens system (which may include a relay lens stage and a wide angle lens stage) having an optical axis.
- the wide angle lens system may be configured to receive the image and project the image along an optical path for display above the display device.
- the projection display device further may include direction changing optics configured to fold the optical path such that the optical path changes direction from a first direction to a second direction.
- the image generation device may be positioned below the optical axis of the wide angle lens system such that the offset of the image generation device is down, but the image offset is up.
- the optical axis of the wide angle lens system may be the optical axis of the relay lens stage, or in other embodiments, may be the optical axis of the wide angle lens stage.
- additional folds and changes in the image path may be used to obtain a desired image offset.
- different types of direction-changing optics such as, but not limited to, planar mirrors, prisms, etc., may be used to fold or otherwise alter the image path in order to ensure that the image offset is up and the display device is offset down.
- Fig. 5 further illustrates, at 500, a projection system including a lens system 520 (such as the lens system discussed above in relation to Figs.
- lens system 520 may be coupled to projector 510.
- lens system 520 may be removably coupled to projector 510.
- lens system 520 may be integrated into projector 510.
- Projector system 500 with lens system 520 may be configured to project an image at a steep angle to a screen or viewing surface. Such a projection system may thus require little space and may be easy to use in a wide variety of environments.
- the projection system 500 may be used in a person's home as a television, entertainment projector, theatre projector, etc.
- the projection system 500 may be used in a business environment.
- the system 500 may be integrated within a cabinet or other like device.
- system 500 may be configured to be hung as a wall display, similar to a picture hanging on the wall.
- the configuration of the lens system (such as the system described in Fig. 3) may enable the body of the projector to be positioned substantially adjacent a display surface, e.g. a wall, a screen, or other suitable surface.
- Lens system 520 may be configured to project an image back towards the rear of the projector.
- lens system 520 may be configured to redirect the image path 180 degrees such that the image is first generated and directed toward the front of the projector (indicated at 515) and then redirected across the back of the body of the projector to a display surface disposed to the rear of the projector (indicated at 525).
- the shelf space required for the projection device may be reduced. Further, such a configuration spaces the lens system 520 a select distance from a display surface which may be adapted to receive the projected image.
- the select distance (as defined by the size of the projector body) may substantially correlate to the minimum throw distance or a preferred throw distance of the lens system.
- the orientation of the lens system 520 relative to the projector 510 may enable the main body of the projector 510 to be positioned in close proximity to a wall. Such a configuration may reduce the shelf space required for the projector when in operation, while still providing a reduced throw distance for the lens system.
- the projector 510 of Fig. 5 may be placed substantially next to a wall or display surface (e.g. within 2 to 10 inches from a wall or display surface) while producing a large image (e.g. a 50-inch to 100-inch image).
- the ability to position an operable projection device substantially close to a viewing surface may operate to reduce shadows on the screen caused by movement of objects, e.g. people walking through the light path, or other objects that may be intermittently or permanently present in the light path.
- the image display will not be interrupted by a presenter walking around the room, or audience members raising their hands, or other viewers moving throughout a presentation room. Since the image is thrown only a short distance, such movements and interruptions will not generate disruptive shadows in the image.
- such a configuration may be used in systems such as those described below where the system may be easily stored and set up for use without having to repeatedly pack up and unpack a projector.
- the system 500 of Fig. 5 further may be adapted to offset the display device up as described in relation to Fig. 4.
- the present system is set such that the display device is offset up in order to make the image offset up.
- the production of an intermediate image may require the display device to be offset up.
- the display device may be offset down (as may be desired) while still maintaining the image offset up.
- Projector 510 may further include one or more cords (a single cord is shown for illustrative purposes at 530).
- cords may include, but are not limited to power cords, network cords, etc.
- projector 510 with lens system 520 may be configured to project an image to a substantially adjacent screen or wall surface. Thus, it may be possible to position projector 510 relatively close to a wall or other image surface.
- the configuration of the lens system changes the direction of the light (which was previously directed away from the front of the projector after it exits the projection lens) such that the light is redirected toward the back of the projector.
- This configuration enables the projector to be positioned such that plugs, outlets, IO connectors, etc. on the back side of the projector may be positioned substantially adjacent the wall.
- cord 530 may be easily received in a wall outlet substantially adjacent the projector. Unlike previous systems, where cords draped from a projector across the room to an outlet, the cords may instead run along the wall to a suitable outlet without presenting an obstacle to presenters and audience members in the room. Moreover, the proximity of the projector to the wall may enable shorter cords to be used with the system.
- the lens system herein may be incorporated within a rear projection device and/or system.
- lens system may be configured to project an image to a screen where the viewer is disposed on the same side of the screen as the projector, such as in a front projection system. In other embodiments, the lens system may be configured to project an image to a screen where viewer is on the opposing side of the screen from the projector, such as a rear projection system.
- references in the specification to "one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention.
- the appearances of the phrase “in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment and such features, structures and/or characteristics may be included in various combinations with features, structures and/or characteristics of other embodiments.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05733721A EP1735660B1 (en) | 2004-04-15 | 2005-04-13 | Wide angle projection lens |
CN2005800191987A CN1969230B (en) | 2004-04-15 | 2005-04-13 | Wide angle projection lens |
JP2007508560A JP2007532981A (en) | 2004-04-15 | 2005-04-13 | Wide angle projection lens |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/222,050 US7009765B2 (en) | 2002-08-16 | 2002-08-16 | Wide angle lens system having a distorted intermediate image |
US10/222,083 US6896375B2 (en) | 2002-08-16 | 2002-08-16 | Rear projection display device having multiple mirrors that are substantially parallel to a screen |
US10/754,093 US7150537B2 (en) | 2002-08-16 | 2004-01-06 | Projection television device and screen |
US10/825,837 | 2004-04-15 | ||
US10/825,837 US7175287B2 (en) | 2002-08-16 | 2004-04-15 | Wide angle projection lens |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005103813A1 true WO2005103813A1 (en) | 2005-11-03 |
Family
ID=35197131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/012828 WO2005103813A1 (en) | 2002-08-16 | 2005-04-13 | Wide angle projection lens |
Country Status (2)
Country | Link |
---|---|
US (1) | US7175287B2 (en) |
WO (1) | WO2005103813A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008145728A (en) * | 2006-12-11 | 2008-06-26 | Seiko Epson Corp | Projection optical system and projector |
GB2484374A (en) * | 2010-10-08 | 2012-04-11 | Flamerite Fires Ltd | Flame effect heater with image projected successively onto two mirrors |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7271964B2 (en) | 2003-12-05 | 2007-09-18 | 3M Innovative Properties Company | Projection display device for multimedia and wall display systems |
WO2005057267A2 (en) * | 2003-12-05 | 2005-06-23 | 3M Innovative Properties Company | Wide-angle projection lens and optical engine for a projection display device |
US7126767B2 (en) * | 2003-12-05 | 2006-10-24 | 3M Innovative Properties Company | Wide-angle projection lens for front projection display systems |
US7342723B2 (en) * | 2004-12-03 | 2008-03-11 | 3M Innovative Properties Company | Projection lens and portable display device for gaming and other applications |
US7173777B1 (en) | 2006-02-14 | 2007-02-06 | 3M Innovative Properties Company | Projection lens and display device for multimedia and other systems |
US20060285090A1 (en) * | 2004-12-03 | 2006-12-21 | 3M Innovative Properties Company | Projection lens and portable display device for gaming and other applications |
US7695146B2 (en) * | 2005-10-24 | 2010-04-13 | Hewlett-Packard Development Company, L.P. | Projection assembly |
US20070091452A1 (en) * | 2005-10-25 | 2007-04-26 | Scott Lerner | Projection system and method |
CN101916581A (en) | 2005-12-12 | 2010-12-15 | 精工爱普生株式会社 | The docking station and the method that are used for portable electronic device |
US7768715B2 (en) * | 2007-02-21 | 2010-08-03 | Theia Technologies, Llc | Whole system zoom and varifocal lens with intermediate image |
US7857463B2 (en) * | 2007-03-29 | 2010-12-28 | Texas Instruments Incorporated | Optical system for a thin, low-chin, projection television |
US7967448B2 (en) * | 2007-07-02 | 2011-06-28 | Texas Instruments Incorporated | Optical system for a thin, low-chin, projection television |
US8540375B2 (en) * | 2007-11-30 | 2013-09-24 | Texas Instruments Incorporated | Offset projection distortion correction |
JP5332242B2 (en) | 2008-03-11 | 2013-11-06 | セイコーエプソン株式会社 | projector |
US8054541B2 (en) * | 2009-03-12 | 2011-11-08 | Young Optics Inc. | Fixed-focus lens |
TWI418845B (en) | 2010-06-01 | 2013-12-11 | Young Optics Inc | Fixed-focus lens |
CN103293642B (en) | 2012-03-02 | 2015-08-26 | 扬明光学股份有限公司 | Projection lens and projection arrangement |
JP6280063B2 (en) | 2015-02-25 | 2018-02-14 | 富士フイルム株式会社 | Projection optical system and projection display device |
KR102255272B1 (en) | 2015-08-21 | 2021-05-24 | 삼성전자주식회사 | Projection lens system and projection system |
CN208060922U (en) | 2015-09-29 | 2018-11-06 | 富士胶片株式会社 | Projection lens and projecting apparatus |
US10261290B2 (en) | 2015-12-28 | 2019-04-16 | Alex Ning | Compact wide angle lens |
JP6699358B2 (en) | 2016-05-31 | 2020-05-27 | セイコーエプソン株式会社 | Projection optical system and projector |
CN107450166A (en) | 2016-06-01 | 2017-12-08 | 精工爱普生株式会社 | Projection optics system and projection type video display device |
JP6780315B2 (en) * | 2016-06-22 | 2020-11-04 | カシオ計算機株式会社 | Projection device, projection system, projection method and program |
JP6776705B2 (en) | 2016-08-01 | 2020-10-28 | セイコーエプソン株式会社 | projector |
JP6670388B2 (en) * | 2016-09-23 | 2020-03-18 | 富士フイルム株式会社 | Projection lens and projector |
WO2018055964A1 (en) * | 2016-09-23 | 2018-03-29 | 富士フイルム株式会社 | Projection lens and projector |
JP6836141B2 (en) | 2016-12-09 | 2021-02-24 | セイコーエプソン株式会社 | Projection optics and projection type image display device |
JP7019961B2 (en) * | 2017-04-20 | 2022-02-16 | コニカミノルタ株式会社 | Projection optics and projection equipment |
JP6653744B1 (en) * | 2018-11-02 | 2020-02-26 | 富士フイルム株式会社 | Projection lens and projection device |
CN113167989B (en) | 2018-12-07 | 2023-07-25 | 索尼集团公司 | Image display device and projection optical system |
JP2021001967A (en) * | 2019-06-21 | 2021-01-07 | セイコーエプソン株式会社 | Projection optical device and projector |
JP7306369B2 (en) * | 2020-12-24 | 2023-07-11 | セイコーエプソン株式会社 | Projection optical system and projector |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6111701A (en) * | 1999-07-14 | 2000-08-29 | Rockwell Collins, Inc. | Chromatic aberration corrected multi-color head-up display system |
US6144503A (en) * | 1998-04-24 | 2000-11-07 | Sony Corporation | Projection lens and focus adjusting method for projection lens |
US6188523B1 (en) * | 1999-11-16 | 2001-02-13 | Samsung Electronics Co., Ltd. | Projection lens unit for projector |
US6485145B1 (en) * | 1999-12-21 | 2002-11-26 | Scram Technologies, Inc. | Optical system for display panel |
US6493032B1 (en) * | 1996-06-24 | 2002-12-10 | Be Here Corporation | Imaging arrangement which allows for capturing an image of a view at different resolutions |
US20030137744A1 (en) | 2001-06-28 | 2003-07-24 | Minolta Co., Ltd. | Projection optical system |
US6652104B2 (en) * | 2001-03-01 | 2003-11-25 | Seiko Epson Corporation | Correction of image distortion |
US20040032653A1 (en) | 2002-08-16 | 2004-02-19 | Gohman Jeffrey Alan | Wide angle lens system having a distorted intermediate image |
US20040227990A1 (en) * | 2002-08-16 | 2004-11-18 | Peterson Mark D. | Variable fresnel screen for use in projection device |
Family Cites Families (86)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3485165A (en) * | 1968-01-08 | 1969-12-23 | Richard G Hughes | Silk-screening frame |
US3712707A (en) * | 1970-02-27 | 1973-01-23 | Gen Electric | Composite back projection screen and method of forming |
USRE33795E (en) * | 1984-06-13 | 1992-01-14 | Hitachi, Ltd. | Rear projection apparatus |
JPS61208041A (en) * | 1985-03-11 | 1986-09-16 | Mitsubishi Rayon Co Ltd | Back face projection screen |
JPH0623817B2 (en) * | 1985-07-18 | 1994-03-30 | 旭光学工業株式会社 | LCD projection image display device |
JPH03213840A (en) * | 1988-11-22 | 1991-09-19 | Canon Inc | Rear projection type screen and rear projection type image display device using it |
JPS62257140A (en) * | 1986-04-30 | 1987-11-09 | Mitsubishi Rayon Co Ltd | Back projection screen |
US4730897A (en) * | 1987-04-21 | 1988-03-15 | North American Philips Corporation | Projection screen having high resolution and good mechanical stability |
US4880292A (en) * | 1987-07-24 | 1989-11-14 | Minolta Camera Kabushiki Kaisha | Transmission viewing screen of image projector apparatus |
US4773731A (en) * | 1987-08-28 | 1988-09-27 | North American Philips Corp. | One-piece projection screen |
JPH0627921B2 (en) * | 1987-10-19 | 1994-04-13 | 三菱電機株式会社 | Magnifying projection device |
DE3911443C2 (en) * | 1988-04-08 | 1993-12-02 | Koito Mfg Co Ltd | Optical luminaire cover with Fresnel prisms, their use and a process for their manufacture |
US5032022A (en) * | 1988-09-14 | 1991-07-16 | Casio Computer Co., Ltd. | Projector |
KR920008057B1 (en) * | 1989-01-28 | 1992-09-22 | 주식회사 금성사 | Rear projection screen |
US5422691A (en) * | 1991-03-15 | 1995-06-06 | Seiko Epson Corporation | Projection type displaying apparatus and illumination system |
JP2989947B2 (en) | 1991-10-29 | 1999-12-13 | 日東光学株式会社 | Optical system for projection display |
US5442484A (en) * | 1992-01-06 | 1995-08-15 | Mitsubishi Denki Kabushiki Kaisha | Retro-focus type lens and projection-type display apparatus |
JP3320862B2 (en) * | 1992-11-26 | 2002-09-03 | 旭光学工業株式会社 | Pupil conjugate coupling device for projection optical system |
US6788460B2 (en) * | 1998-04-15 | 2004-09-07 | Duke University | Projection screen apparatus |
JP2786796B2 (en) * | 1993-06-23 | 1998-08-13 | シャープ株式会社 | projector |
JPH0764042A (en) * | 1993-08-24 | 1995-03-10 | Hitachi Ltd | Extremely wide-angle liquid crystal projector system |
US5489940A (en) * | 1994-12-08 | 1996-02-06 | Motorola, Inc. | Electronic imaging system and sensor for correcting the distortion in a wide-angle lens |
US5805359A (en) * | 1995-05-19 | 1998-09-08 | Olympus Optical Co., Ltd. | Wide-angle lens system |
US5710668A (en) * | 1995-05-26 | 1998-01-20 | Flight Dynamics | Multi-color head-up display system |
US5820240A (en) * | 1995-06-22 | 1998-10-13 | Minolta Co., Ltd. | Projection optical device |
JP3329147B2 (en) * | 1995-07-03 | 2002-09-30 | 松下電器産業株式会社 | Screen fixing device |
US5724195A (en) * | 1995-08-25 | 1998-03-03 | Asahi Kogaku Kogyo Kabushiki Kaisha | Fast super wide-angle lens system |
EP0764875A1 (en) * | 1995-09-21 | 1997-03-26 | Kabushiki Kaisha Toshiba | Multiscreen displaying apparatus and screen fitting structure |
JP3541576B2 (en) * | 1995-10-25 | 2004-07-14 | ミノルタ株式会社 | Imaging optics |
US5642927A (en) * | 1995-11-22 | 1997-07-01 | Lightware, Inc. | LCD projector with retractable projection lens assembly |
FR2742289B1 (en) * | 1995-12-06 | 1998-01-16 | Thomson Multimedia Sa | IMPROVEMENT TO THE PROJECTION SYSTEM |
US5946142A (en) * | 1995-12-11 | 1999-08-31 | Hitachi Ltd. | Projection lens system and projection image display apparatus using the same |
US5760973A (en) * | 1995-12-26 | 1998-06-02 | Ricoh Company, Ltd. | Compact wide-angle lens system |
US5796528A (en) * | 1996-02-15 | 1998-08-18 | Olympus Optical Co., Ltd. | Wide-angle lens system |
US6123425A (en) * | 1996-04-26 | 2000-09-26 | Minolta Co., Ltd. | Projecting optical system |
JP3936412B2 (en) * | 1996-07-15 | 2007-06-27 | 大日本印刷株式会社 | Fresnel lens sheet and transmissive screen |
US6129552A (en) * | 1996-07-19 | 2000-10-10 | Technique-Pedagogie-Securite Equipements | Teaching installation for learning and practicing the use of fire-fighting equipment |
US6400504B2 (en) * | 1996-07-23 | 2002-06-04 | Dai Nippon Printing Co., Ltd. | Rear projection screen having reduced scintillation |
US6053615A (en) * | 1996-08-02 | 2000-04-25 | In Focus Systems, Inc. | Image projector with polarization conversion system |
DE19636152C2 (en) * | 1996-09-06 | 1999-07-01 | Schneider Co Optische Werke | Compact wide angle lens |
JPH10104509A (en) * | 1996-09-30 | 1998-04-24 | Matsushita Electric Ind Co Ltd | Wide angle lens group |
US6084707A (en) * | 1996-10-04 | 2000-07-04 | Kuraray Co., Ltd. | Transmission-type screen |
US5978051A (en) * | 1996-10-31 | 1999-11-02 | In Focus Systems Inc | Image projection system with variable display format |
JP3725284B2 (en) * | 1997-03-05 | 2005-12-07 | フジノン株式会社 | Compact wide-angle lens |
JPH1152228A (en) * | 1997-08-05 | 1999-02-26 | Nikon Corp | Wide angle lens |
JP3753842B2 (en) * | 1997-08-21 | 2006-03-08 | フジノン株式会社 | Super wide-angle lens system |
JPH1164726A (en) * | 1997-08-22 | 1999-03-05 | Olympus Optical Co Ltd | Wide-angle lens |
US6124979A (en) * | 1997-09-10 | 2000-09-26 | Hitachi, Ltd. | Projection display apparatus and projection lens device for use therein |
JP3769373B2 (en) * | 1997-11-19 | 2006-04-26 | フジノン株式会社 | Bright wide-angle lens |
US6081380A (en) * | 1997-12-22 | 2000-06-27 | Hitachi, Ltd. | Directional reflection screen and projection display |
JP3587676B2 (en) * | 1998-03-23 | 2004-11-10 | 三菱電機株式会社 | Transmissive screen and projection display |
US6201647B1 (en) * | 1998-07-06 | 2001-03-13 | Minolta Co., Ltd. | Image display apparatus |
US6273338B1 (en) * | 1998-09-22 | 2001-08-14 | Timothy White | Low cost color-programmable focusing ring light |
US6185041B1 (en) * | 1998-10-23 | 2001-02-06 | Duke University | Projection lens and system |
US6046859A (en) * | 1998-10-26 | 2000-04-04 | Intel Corporation | Segmented lens |
JP2000171613A (en) * | 1998-12-02 | 2000-06-23 | Kuraray Co Ltd | Fresnel lens sheet |
US6307675B1 (en) * | 1998-12-24 | 2001-10-23 | Toppan Printing Co. Ltd. | Rear-projection screen for use with a liquid crystal panel as a video source |
US6407859B1 (en) * | 1999-01-13 | 2002-06-18 | 3M Innovative Properties Company | Fresnel lens for projection screen |
JP3495631B2 (en) * | 1999-02-15 | 2004-02-09 | ペンタックス株式会社 | Wide-angle lens |
JP2000241705A (en) * | 1999-02-23 | 2000-09-08 | Minolta Co Ltd | Video display optical system |
US6417966B1 (en) * | 1999-07-07 | 2002-07-09 | 3M Innovative Properties Company | Rear projection screen using internal reflection |
US6406150B1 (en) * | 1999-07-09 | 2002-06-18 | Sarnoff Corporation | Compact rear projections system |
US6561649B1 (en) * | 1999-07-09 | 2003-05-13 | Sarnoff Corporation | Compact rear projection system using birefringent optics |
US6147812A (en) * | 1999-07-28 | 2000-11-14 | Nittoh Kogaku K.K. | Projection zoom lens system and projector apparatus |
US6137638A (en) * | 1999-07-28 | 2000-10-24 | Nittoh Kogaku K.K. | Projection zoom lens system and projector apparatus |
CA2381093C (en) * | 1999-08-04 | 2008-02-05 | Sanyo Electric Co., Ltd. | Rear projection display device |
JP2001083411A (en) * | 1999-09-09 | 2001-03-30 | Fuji Photo Optical Co Ltd | Wide-angle lens |
JP2001108937A (en) * | 1999-10-12 | 2001-04-20 | Canon Inc | Projection type display device |
JP2001208966A (en) * | 2000-01-28 | 2001-08-03 | Fuji Photo Optical Co Ltd | Wide-angle lens |
JP3840031B2 (en) * | 2000-03-09 | 2006-11-01 | キヤノン株式会社 | Projection optical system and projection display device using the same |
US6236511B1 (en) * | 2000-03-20 | 2001-05-22 | Rockwell Collins, Inc. | Beam combining optical element |
US6419365B1 (en) * | 2000-04-21 | 2002-07-16 | Infocus Corporation | Asymmetrical tunnel for spatially integrating light |
JP3808293B2 (en) * | 2000-07-28 | 2006-08-09 | Necビューテクノロジー株式会社 | Reflective imaging optical system |
KR20020012377A (en) * | 2000-08-07 | 2002-02-16 | 구자홍 | Apparatus for adjusting mirror of optical system for lcd projector |
US6805447B2 (en) * | 2000-10-13 | 2004-10-19 | Nec Viewtechnology Ltd. | Rear projection display device and projecting method used for the same |
US6416181B1 (en) * | 2000-12-15 | 2002-07-09 | Eastman Kodak Company | Monocentric autostereoscopic optical apparatus and method |
JP2002311377A (en) * | 2001-04-10 | 2002-10-23 | Olympus Optical Co Ltd | Display device |
JP2003015034A (en) * | 2001-04-26 | 2003-01-15 | Hitachi Ltd | Lens device for projection, and backproject type image display device using the same |
KR100410964B1 (en) * | 2001-07-27 | 2003-12-18 | 삼성전기주식회사 | Projection lens of projection display apparatus |
US6813094B2 (en) * | 2002-03-11 | 2004-11-02 | Eastman Kodak Company | Surface formed complex polymer lenses diffuse reflector |
JP2003280089A (en) * | 2002-03-20 | 2003-10-02 | Nec Viewtechnology Ltd | Projector |
US7239360B2 (en) * | 2002-06-12 | 2007-07-03 | Silicon Optix Inc. | Short throw projection system and method |
US6857750B2 (en) * | 2002-06-27 | 2005-02-22 | Koninklijke Philips Electronics N.V. | Offset projection for slim rear projection displays |
US6896375B2 (en) * | 2002-08-16 | 2005-05-24 | Infocus Corporation | Rear projection display device having multiple mirrors that are substantially parallel to a screen |
TW572533U (en) * | 2002-12-19 | 2004-01-11 | Coretronic Corp | Adjusting apparatus |
US6853493B2 (en) * | 2003-01-07 | 2005-02-08 | 3M Innovative Properties Company | Folded, telecentric projection lenses for use with pixelized panels |
-
2004
- 2004-04-15 US US10/825,837 patent/US7175287B2/en not_active Expired - Lifetime
-
2005
- 2005-04-13 WO PCT/US2005/012828 patent/WO2005103813A1/en active Application Filing
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6493032B1 (en) * | 1996-06-24 | 2002-12-10 | Be Here Corporation | Imaging arrangement which allows for capturing an image of a view at different resolutions |
US6144503A (en) * | 1998-04-24 | 2000-11-07 | Sony Corporation | Projection lens and focus adjusting method for projection lens |
US6111701A (en) * | 1999-07-14 | 2000-08-29 | Rockwell Collins, Inc. | Chromatic aberration corrected multi-color head-up display system |
US6188523B1 (en) * | 1999-11-16 | 2001-02-13 | Samsung Electronics Co., Ltd. | Projection lens unit for projector |
US6485145B1 (en) * | 1999-12-21 | 2002-11-26 | Scram Technologies, Inc. | Optical system for display panel |
US6652104B2 (en) * | 2001-03-01 | 2003-11-25 | Seiko Epson Corporation | Correction of image distortion |
US20030137744A1 (en) | 2001-06-28 | 2003-07-24 | Minolta Co., Ltd. | Projection optical system |
US6624952B2 (en) * | 2001-06-28 | 2003-09-23 | Minolta Co., Ltd. | Projection optical system |
US20040032653A1 (en) | 2002-08-16 | 2004-02-19 | Gohman Jeffrey Alan | Wide angle lens system having a distorted intermediate image |
US20040227990A1 (en) * | 2002-08-16 | 2004-11-18 | Peterson Mark D. | Variable fresnel screen for use in projection device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008145728A (en) * | 2006-12-11 | 2008-06-26 | Seiko Epson Corp | Projection optical system and projector |
JP4609423B2 (en) * | 2006-12-11 | 2011-01-12 | セイコーエプソン株式会社 | Projection optical system and projector |
GB2484374A (en) * | 2010-10-08 | 2012-04-11 | Flamerite Fires Ltd | Flame effect heater with image projected successively onto two mirrors |
Also Published As
Publication number | Publication date |
---|---|
US20040233394A1 (en) | 2004-11-25 |
US7175287B2 (en) | 2007-02-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7175287B2 (en) | Wide angle projection lens | |
US10955648B2 (en) | Projection television device and screen | |
US7413312B2 (en) | Projection device and screen | |
US7090354B2 (en) | Projection device and screen | |
JP5239279B2 (en) | projector | |
US20080123062A1 (en) | Projector | |
JP2005510759A (en) | TIR prism for DMD projector | |
JP2010122574A (en) | Projection type image display device and projection optical system | |
EP1735660B1 (en) | Wide angle projection lens | |
US9229309B2 (en) | Projection apparatus | |
JP5097181B2 (en) | Projection display system | |
JP5352685B2 (en) | Projection display system | |
Matsumoto et al. | Ultra-short throw distance front projector with mirror-lens hybrid projection optical system | |
KR20230126531A (en) | Beam projector for projection on multi-screen | |
JP2005156573A (en) | Image projection apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005733721 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007508560 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200580019198.7 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 2005733721 Country of ref document: EP |