WO2015092536A2 - 향상된 밝기를 갖는 입체 영상 장치 및 입체 영상 제공방법 - Google Patents
향상된 밝기를 갖는 입체 영상 장치 및 입체 영상 제공방법 Download PDFInfo
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- WO2015092536A2 WO2015092536A2 PCT/IB2014/002886 IB2014002886W WO2015092536A2 WO 2015092536 A2 WO2015092536 A2 WO 2015092536A2 IB 2014002886 W IB2014002886 W IB 2014002886W WO 2015092536 A2 WO2015092536 A2 WO 2015092536A2
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- Prior art keywords
- light
- splitter
- polarization
- polarized light
- reflected
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- 238000000034 method Methods 0.000 title abstract description 18
- 230000010287 polarization Effects 0.000 claims description 80
- 238000003384 imaging method Methods 0.000 claims description 28
- 238000012538 light obscuration Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 12
- 230000003287 optical effect Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 1
- 229940014144 folate Drugs 0.000 description 1
- OVBPIULPVIDEAO-LBPRGKRZSA-N folic acid Chemical compound C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)N[C@@H](CCC(O)=O)C(O)=O)C=C1 OVBPIULPVIDEAO-LBPRGKRZSA-N 0.000 description 1
- 235000019152 folic acid Nutrition 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
- H04N13/337—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
- G02B30/35—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers using reflective optical elements in the optical path between the images and the observer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
- G02B30/36—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers using refractive optical elements, e.g. prisms, in the optical path between the images and the observer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/346—Image reproducers using prisms or semi-transparent mirrors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/363—Image reproducers using image projection screens
Definitions
- the present invention relates to a stereoscopic imaging apparatus and a stereoscopic image providing method, and more particularly, to an invention in which two projectors each provide stereoscopic images of high quality by displaying stereoscopic images in a triple light method.
- Figure 13 shows the structure of a light splitter according to the prior art.
- Light having a polarization direction such as P- and S-polarized light has a P-polarized light in the light splitter l (PBS (Polar izing Beam Spl i tter)) is transmitted and has S-polarized light. The light is reflected.
- PBS Polar izing Beam Spl i tter
- the light of the reflected and transmitted S- ⁇ P-polarized light is propagated in the same direction by the prism (2, 3) of the rhombus shape. ,
- light mixed with P- and S-polarized light by the disclosed light splitter becomes the same polarized light, for example, S-polarized light, and can have the same direction.
- the image plane 5 for generating an image in the projector As shown in Fig. 14, the image plane 5 for generating an image in the projector.
- the transmitted light having the P-polarized light component is the light having the S-polarized light passing through the half-wave retarder (8), reflecting members (9, 10), polarizer (polarizer) (11), and modulator ( 12) is focused on the projection screen.
- the modulator 12 may change the polarization direction by, for example, an electrical signal.
- the S-polarized light reflected by the light splitter 7 passes through the reflecting member 13 and then polarization maintains the same direction as it reaches the projection screen.
- the left eye image and the right eye image are alternately coming out from the image surface (5), these images are displayed on the screen through the above components, providing a stereoscopic image using only one projector for the left eye There was a problem that the parallax is inevitable when providing images and images for the right eye.
- the present invention can provide a high-quality stereoscopic image by continuously providing the right eye image and the left eye image regardless of the parallax, and furthermore, it is possible to provide a stereoscopic image without an electrically driven modulator Its purpose is to implement a stereoscopic imaging apparatus and a stereoscopic image providing method.
- a first polarized light splitter that reflects light incident along a first path in a first direction and a second direction according to a polarization component and transmits it in a third direction ;
- a first reflecting member reflecting light reflected by the first polarization light splitter in a screen direction;
- a second polarized light splitter for reflecting light incident along the second path in the first and second directions and transmitting in the third direction according to the polarization component; It provides a stereoscopic imaging device comprising a second reflecting member for reflecting the light reflected by the second polarized light splitter in the direction of the screen.
- the present invention reflects the light incident along the first path and the light incident along the second path in the first direction and the second direction according to the polarization component, respectively,
- the transmitted and reflected light from each path is screened.
- Forming an image to be superimposed on the screen wherein the incident light is reflected by the polarized light splitter divided into at least two parts and reflected in the first and second directions when the light is reflected and transmitted.
- And light transmitted in a third direction wherein the reflected light in the first direction and the second direction is divided into two sections of the incident light, and the light traveling along the first path and the second path is divided into three transmission paths, respectively.
- a three-dimensional image providing method characterized in that the divided to reach the screen, and overlap each other.
- FIG. 1 is a structural diagram of a stereoscopic imaging apparatus according to a first embodiment of the present invention.
- FIG. 2 is a structural diagram of a stereoscopic imaging apparatus according to a second embodiment of the present invention.
- Figure 4 is a path of light when there is a light refractive member in the present invention
- FIG. 5 illustrates an operation in which different linearly polarized light is incident on a screen according to the first embodiment of the present invention.
- FIG. 6 illustrates an operation in which different circularly polarized light is incident on a screen according to the second embodiment of the present invention.
- FIG. 7 is a structural diagram showing a path of light in one projector stage of the stereoscopic imaging apparatus according to the present invention.
- FIG. 8 is a side view of a structure for correcting a path of transmitted light in one projector stage of a stereoscopic imaging apparatus according to the present invention.
- 9 to 12 are side views of a structure for correcting the path of the reflected light in one projector stage of the stereoscopic imaging apparatus according to the present invention.
- FIG. 13 illustrates a light splitting method for realizing a single polarized light according to the prior art.
- the stereoscopic imaging apparatus is associated with two projectors 1 and 20.
- the video signal will be displayed as 'light', and the word 'light' below will be regarded as containing the meaning of 'video signal'.
- the display is divided into the first projector 10 and the second projector 20 to be displayed.
- the first image projector 11 and the first projector 10 and the second projector 20 are displayed.
- the path of the light exiting and splitting from the first projector 10 is called the first path 1
- the path of the light exiting and splitting from the second projector is called the second path (2).
- the light moving along the first path (1) is associated with the left eye image, and the second path
- Light moving along (2) is associated with the right eye image. However, this order may be changed.
- the stereoscopic imaging apparatus 100 disposed on the first path 1 includes a first polarized light splitter 110, a refractive member 120, a pair of first reflecting members 130, and a first The retarder 140 and the first clean-up polarizer 150 are prepared.
- the second polarized light splitter In the stereoscopic imaging apparatus 200 disposed in the second path 2, the second polarized light splitter
- a refractive member 220 a refractive member 220, a pair of second reflecting members 230, a second retarder 240, and a second clean-up polarizer 250 are prepared.
- the first and second polarization light splitters 110 and 210 are in the form of one flat plate. It is desirable to implement a state in which the cross section is not implemented.
- the center of the first and second polarization light splitters (110, 210) is preferably located on the optical axis of the incident light.
- the first and second polarization light splitters (110, 210) are one side (111, 211) and the other side, respectively
- the one side (111, 211) and the other side (112, 212) are each disposed to be inclined, it is preferably arranged to face different directions.
- the first and second polarization light splitters 110 and 210 transmit P-polarized light and reflect S-polarized light among light traveling along the first path 1 and the second path 2. .
- the P-polarized light component of the light incident on the first polarized light splitter 110 along the first path 1 is transmitted and proceeds toward the screen (S).
- the S-polarized component is reflected and proceeds in the first direction (upward direction in this figure), and the S-polarized component of light incident on the other side 112 is reflected and travels in the second direction (downward direction in this figure). do.
- the transmission and reflection direction of the light moving along the second path (2) is also the same as above.
- the first and second polarization splitters 110 and 210 are provided with a pair of reflecting members 130 and 230, respectively.
- the reflective members 130 and 230 may be representative of the mirror, but the present invention is not limited thereto, and any component such as a prism capable of realizing a light reflection function is possible.
- the light reflected by the first and second polarization light splitters 110 and 210 and directed in two directions, respectively, is preferably provided to bisect the cross section of the incident light.
- any one of the pair of first reflecting member 130 is disposed to face one side 111 of the first polarized light splitter 110, the other to face the other side (112) Is placed.
- the light reflected from the light and the other side 112 reflected from one side 111 of the first polarized light splitter 110 is incident on the first reflecting member 130 and reflected back the screen Incident in a direction.
- the light reflected from one side portion 211 of the second polarization light splitter 210 and the light reflected from the other side portion 212 are incident to the second reflecting member 230, respectively, It is then incident to the screen again.
- the light reflected by the virtual machine second , the polarized light splitter 210 and the second reflecting member 230 is combined on the screen.
- the first light refractive member 120 and the second light refractive member 220 is prepared.
- the first and second light refraction members 120 and 220 are provided to prevent the disappearance of light incident in the center direction of the first and second polarization light splitters 110 and 210.
- optical refraction member Detailed description of the optical refraction member will be described later.
- a first retarder 140 is provided in the output direction (backward direction) of the first polarized light splitter 110, and the first retarder 140 is a half-wave retarder. It rotates 90 degrees to convert the P-polarized light transmitted through the 110 into the S-polarized light.
- the first retarder 140 is preferably implemented as a half-wave retarder.
- a first clean-up polarizer 150 is provided, and the first clean-up polarizer 150 performs a function of improving polarization characteristics.
- the first clean-up polarizer 150 transmits the light reflected from the first polarized light splitter 110 and the first reflective member 130 and the first polarized light splitter 110 and is a first light polarizer. It serves to improve the polarization state of the light passing through the retarder 140.
- the first clean-up polarizer 150 has been disclosed that is provided in one wide form because it receives both the light transmitted through the reflection and moving, but is divided into three according to the polarization efficiency and selectively arranged It may be omitted or omitted.
- the retarder is not disposed in the emission direction of the second polarization light splitter 210, rather, the second retarder 240 is disposed in the emission direction of the second reflecting member 230.
- the second retarder 240 is also composed of two accordingly.
- the second retarder 240 serves to change the polarization state of the light of the second path 2 reflected by the second reflecting member 230.
- the light reflected by the second reflecting member 230 is S-polarized light
- a second clean-up polarizer 250 is provided near the emission direction of the second polarized light splitter 210 and the second reflecting member 230 (or the second retarder 240), and the second clean-up piece
- the madness 250 is in a form capable of receiving all the light (reflected light, transmitted light) of the second path,
- the final state of the image incident on the screen S is linearly polarized (one is S-polarized, the other is Is the case with P-polarized light.
- the first ⁇ 2 clean-up polarizers 150 and 250 may be selectively installed according to the state of linearly polarized light finally directed to the screen. That is, since the role of the first and second cleanup polarizers 150 and 250 is to increase the purity of the linearly polarized light, the first and second cleanup polarizers 15 and 250 are essential when the purity of the polarization from the original is high. It does not have to be installed.
- the image to be incident on the screen (S) is made of circularly polarized light, in particular, for example, the image coming out of the first projector 10 is for the left eye and ⁇ coming out of the second projector 20
- the first and second quarter wavelength retarders 160 and 260 are installed after the first and second clean-up polarizers 150 and 250.
- the first quarter-wave retarder 160 is installed behind the first clean-up polarizer 150, the second quarter-wave retarder 160 is the second clean-up polarizer ( 250) can be installed behind.
- first and second cleanup polarizers 150 and 260 may be omitted.
- the first and second quarter wavelength retarders 160 and 260 convert the incident linearly polarized light into circularly polarized light rotating in a clockwise or counterclockwise direction, but having a 1/4 wavelength delay.
- Circular polarization can be generated by counterclockwise or clockwise rotation.
- a quarter-wave retarder is placed side by side with the direction of incidence of the light and is delayed by a quarter wavelength, the light can be circularly polarized light with clockwise rotation, while the quarter-wave retarder When arranged opposite to the incident direction and consequently delayed by -1/4 wavelength, the light can be circularly polarized light with counterclockwise rotation.
- the transmitted light at 20 has the same polarization axis, and the reflected light at the first projector 10 and the second projector 20 also has the same polarization axis, and then irradiated from the first projector 10
- the transmitted and reflected light generates clockwise circularly polarized light using the quarter wavelength retarder, and the transmitted and reflected light irradiated from the second projector 2 is counterclockwise circularly polarized light using the -1/4 wavelength retarder.
- the polarization axis between the transmitted light and the reflected light of the first projector 10 and / or the second projector 20 is the same polarization axis using a 1/2 wavelength retarder as shown in FIG. Although it may have a polarization axis perpendicular to each other without a 1/2 wavelength retarder, the left / right image is controlled by controlling only the circular polarization direction by a 1/4 wavelength retarder (or -1/4 wavelength retarder). It is possible to implement.
- FIG. 3 shows a traveling path of light incident on the first polarized light splitter or the second polarized light splitter in the absence of the refracting member, and FIG. 3 shows a traveling path of the light when the refracting member is present.
- the first polarized light splitter having a diameter D (drawing)
- the light incident on the 110 or the second polarized light splitter 210 is inclined to one side portion 111 and 211. When passing through the other side (112, 212) is refracted.
- the light in the central portion (light represented by the diameter d) converges to one point after entering the connection point between the one side 111 and the other side 112 and 212. .
- the light corresponding to the diameter d does not go to the screen, but disappears.
- the light extinction region (DA: Dimming) Area) is formed.
- a portion of the light passing through the first polarized light splitter 110 or the second polarized light splitter 210 passes through the light extinction region DA, and its energy is reduced, which is the intensity of light on the screen. Results in lowering, resulting in a relatively darkening of the entire screen area.
- Figure 4 shows the structure of the first light refracting member 120 or the second light refracting member 220 associated with this correction method.
- the first or second optical refraction member 120 or 220 is similar to the first polarized light splitter 110 and the second polarized light splitter 210. It is desirable to have a refractive index and a thickness.
- the first and second light refracting members 120 and 220 are each provided in a plate form. It may be, but is not limited thereto.
- the portion disposed in front of the other side portions 112 and 212 will be defined as the other side arch portions 122 and 222.
- the shape of the light refraction member 12 220 is similar to the shape of the polarization light splitters 110 and 210.
- one side Daeungbu (121, 221) is located on one side
- the other side Daeungbu (122,222) is located on the other side, these are connected, the bent portion is formed in the center thereof.
- the one side Daeungbu (121,221) and the other side Daeungbu (122, 222) is in the form of a plate, it is arranged inclined in different directions in a connected state.
- the light incident on the light refraction members 120 and 220 is refracted and the path thereof is changed to move to the polarized light splitters 110 and 210.
- the incident path of the light incident on the light extinction region DA shown in FIG. 3 is shown in FIG. It corresponds to the empty area EA, which is no longer due to the refraction of the light refracting members 120 and 220, and no more light propagates in the empty area EA. Since no light is incident on the light, light loss due to light extinction can be prevented.
- the left eye image is emitted along the first path 1 in the first projector 10
- the right eye image is, for example, in the second projector 20.
- the P-polarized light component of the light of the first path 1 passes through the first polarized light splitter 110 and then passes through the first retarder 140 to S. After conversion to polarized light, purity is improved via the first clean-up polarizer 150 before reaching the screen.
- S-polarized light component of the light of the first path (1) is bisected and reflected by the first polarized light splitter (110), and then, after being reflected by the first reflecting member 130, After the first clean-up polarizer 150, the purity is improved and the screen S is reached.
- the P-polarized light component of the light of the second path 2 passes through the second polarized light splitter 210 and passes through the second clean-up polarizer 150 to the screen S having improved purity. To reach.
- the S-polarized light of the light of the second path (2) is bisected and reflected by the second polarized light splitter 210, and then reflected by the second reflecting member 230, the The second retarder 240 converts the P-polarized light.
- the purity is improved through the second clean-up polarizer 250 to reach the screen (S).
- the right-eye image and the left-eye image have a time difference by using a conventional projector. It is possible to provide a three-dimensional image with improved brightness than the alternative method.
- the left eye image for example, is emitted from the first projector 10 along the first path 1 ;
- the image for the right eye for example, is emitted from the second projector 20 along the second path 2
- the P-polarized light component of the light of the first path 1 may cause the first polarized light splitter 110 to be separated.
- the screen ( S) After passing through the first retarder 140 and converted into S-polarized light, and then through the first quarter-wave retarder 160 is converted into clockwise circularly polarized light, the screen ( S) is reached.
- S-polarized light component of the light of the first path (1) is bisected and reflected by the first polarized light splitter 110, and then reflected by the first reflecting member 130 after After that, the first quarter wavelength retarder 160 is used to arrive at the rear image screen which is converted into clockwise circularly polarized light. Between the first retarder 140 and the first quarter wavelength retarder 160, and the first reflective member 130 and the first quarter wavelength retarder 160 In the case where the first cleanup polarizer 150 is installed between the first cleanup polarizer 150, the purity of the polarization is improved while passing through the first cleanup polarizer 150.
- the P-polarized light component of the light of the second path 2 passes through the second polarized light splitter 210 and passes through the second quarter-wave retarder 260 to counterclockwise circularly polarized light. After the conversion to the screen (S) is reached.
- the S-polarized light of the light of the second path (2) is divided by the second polarization light splitting (210) and reflected thereafter, after being reflected by the second reflecting member 230,
- the second retarder 240 converts the P-polarized light.
- the screen S is converted into the circularly polarized light in the counterclockwise direction.
- the purity of the polarization is improved while passing through the second cleanup polarizer 250 before passing through the second quarter wavelength retarder 260.
- a pair of plates included in the first polarized light splitter 110 of FIG. 1 is shown below as a first light splitter 21 and a second light splitter 22 in FIG. 7.
- the pair of first reflecting members 130 in FIG. 1 are represented by the first reflecting member 23 and the second reflecting member 24 in FIG. 7 or less.
- the height difference ⁇ is shown as compared with the image plane of the reflected light and the image plane of the light transmitted through the first light splitter 21 and the second light splitters 22.
- reference numeral 219 is an image plane of the light transmitted through the first light splitter
- 229 is an image plane of the light transmitted through the second light splitter 22.
- Reference numeral 239 is an imaging surface of light reflected from the first reflecting member 23, and reference numeral 249 is an imaging surface of light reflected from the second reflecting member 249.
- the imaging plane of light moving along the reflection path (239 249) is located in front of the imaging plane of the light moving along the transmission path (219, 229), due to the difference in this position: This difference ⁇ occurs do.
- the first method emits transmitted light using a lens 29 with respect to light transmitted through the first and second light splitters 21 and 22.
- a lens 29 To increase the angle. Since the lens 29 should increase the divergence angle, it is preferable to have the characteristics of the concave lens.
- the optical path 299 corrected by the lens 29 by the optical path 298 before correcting by the lens 29 becomes more divergent and the size of the image on the screen increases.
- the portion indicated by the solid line in the transmission path is the path 298 before being corrected by the lens 29, and the portion indicated by the dotted line is the path 299 after being corrected by the lens 29. .
- the above-described height difference ⁇ may be eliminated.
- the lens 29 must be disposed between the two reflection paths so that light traveling along the reflection path does not interfere with the lens 29.
- the second method of eliminating the height difference ⁇ is to install a lens (3 to 31) to reduce the divergence angle of light on the reflection path, as shown in FIG.
- the lenses 30 and 31 should reduce the divergence angle of the light, it is necessary to have some characteristics of the block lens.
- the lens 30, 31 is the first reflecting member 23 and the second reflecting member 24 It is preferably provided adjacent to, and disposed on the path of the light reflected from the first reflecting member 23 and the second reflecting member 24.
- optical paths 309 and 319 corrected by the lenses 30 and 31 are less divergent than the optical paths 308 and 318 before the correction by the lenses 30 and 31.
- the image of the stomach is reduced in size.
- the portion indicated by the reflection path solid line is the path 308, 318 before being corrected by the lenses 30 and 31, and the portion indicated by the dotted line is corrected by the lenses 30 and 31. Is the path (309, 319).
- the above-described height difference ⁇ may be eliminated.
- the lenses 30 and 31 should be disposed outside the transmission path so that the light traveling along the transmission path does not interfere with the lenses 30 and 31.
- a plate or prism 32 or 33 is used to reduce the divergence angle of light. It is also possible to correct the optical path.
- the folate or prism (32, 33) is the first reflecting member 23 and the first
- 329 and 339 become less divergent to reduce the size of the image on the screen.
- the portion indicated by the reflection path solid line is a plate or prism.
- Paths 328 and 338 before correction by (32, 33), and portions indicated by dotted lines are paths 329 and 339 after correction by the plate or prism 32 # 33.
- the above-described height difference ⁇ may be eliminated.
- the plate or prism (32, 33) should be placed out of the transmission path so that light traveling along the transmission path does not interfere with the plate or prism (32, 33) .
- a fourth method for eliminating the height difference ⁇ is to use a reflector-prism assembly 34, 35, as shown in FIG. 11.
- Reflector-prism assembly (34, 35) is a lens 30, shown in Figures 9 to 10
- the reflector-prism assembly (Mi rror-prism assembly) (34, 35) is characterized by reducing the divergence angle of the light.
- Reflector-prism assembly (Mirror-prism assembly) (34, 35) is preferably disposed on the traveling path of the light reflected by the first light splitter 21 and the second light splitter (22). Do.
- the light paths 349 and 359 corrected by the mirror-prism assembly 34 and 35 become less divergent and the size of the image on the screen is reduced.
- the portion indicated by the reflection path solid line is the path (348,358) before being corrected by the reflection member-prism assembly (34, 35), and the portion indicated by the dotted line is the reflection member ⁇ .
- the above-described height difference ⁇ may be eliminated.
- using the light splitter implemented by the prism 38 having two light split surfaces 36, 37 as shown in Figure 12 can have the same effect.
- the light splitters are preferably separated from each other and connected to each other, and preferably include light splitting surfaces 36 and 37 and a prism 38 provided to be inclined.
- polarization having a polarization (for example, S-polarization) characteristic in a different direction is reflected by the light splitting plane (36, 37), and the reflected light is corrected by the prism (38). do. That is, it can be corrected in a less divergent form.
- the refractive member 39, 40 may be disposed in front of the light splitter.
- the role and structure of the refractive members 39 and 40 are as described above.
- the present invention it is possible to reduce the difference between the propagation path of the reflected light and the propagation path of the transmitted light to obtain a higher quality stereoscopic image.
- the arrangement interval between each component can be reduced compared to the conventional can contribute to compact size of the whole product.
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
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- Stereoscopic And Panoramic Photography (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480066988.XA CN105980914B (zh) | 2013-12-16 | 2014-12-29 | 具有提高的亮度的立体图像装置和提供立体图像的方法 |
JP2016538007A JP6229061B2 (ja) | 2013-04-02 | 2014-12-29 | 向上した明るさを有する立体映像装置及び立体映像提供方法 |
US15/038,476 US10291906B2 (en) | 2013-12-16 | 2014-12-29 | Stereoscopic image device having improved brightness and method for providing stereoscopic image |
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KR1020130156411A KR101574285B1 (ko) | 2013-12-16 | 2013-12-16 | 향상된 밝기를 갖는 입체 영상 장치 및 입체 영상 제공방법 |
PCT/KR2014/002563 WO2014163322A1 (ko) | 2013-04-02 | 2014-03-26 | 입체 영상 장치 |
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US (1) | US10291906B2 (ko) |
EP (1) | EP3086160B1 (ko) |
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EP2869116A4 (en) * | 2013-09-05 | 2016-01-20 | Shenzhen Time Waying Technology Co Ltd | STEREOGRAPHIC PROJECTION DEVICE HAVING LOW PROJECTION RATIO AND HIGH LUMINOUS EFFECT AND STEREOGRAPHIC PROJECTION SYSTEM |
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EP3086160A2 (en) | 2016-10-26 |
CN111273456A (zh) | 2020-06-12 |
WO2015092536A3 (ko) | 2015-11-12 |
US10291906B2 (en) | 2019-05-14 |
CN105980914B (zh) | 2019-06-21 |
US20160301920A1 (en) | 2016-10-13 |
KR20150069818A (ko) | 2015-06-24 |
EP3086160A4 (en) | 2016-10-26 |
KR101574285B1 (ko) | 2015-12-03 |
EP3086160B1 (en) | 2018-08-22 |
CN105980914A (zh) | 2016-09-28 |
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