CN107290862B - Multi-view display device - Google Patents
Multi-view display device Download PDFInfo
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- CN107290862B CN107290862B CN201610191034.2A CN201610191034A CN107290862B CN 107290862 B CN107290862 B CN 107290862B CN 201610191034 A CN201610191034 A CN 201610191034A CN 107290862 B CN107290862 B CN 107290862B
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- display device
- view display
- lens group
- incident light
- angle
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- 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
- G02B30/26—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 autostereoscopic type
- G02B30/27—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 autostereoscopic type involving lenticular arrays
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- 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
- G03B35/00—Stereoscopic photography
- G03B35/18—Stereoscopic photography by simultaneous viewing
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- Optics & Photonics (AREA)
Abstract
The invention discloses a multi-view display device, which at least comprises a projector, a first lens group and a second lens group. The projector is internally provided with a scanning light source image, the projector inclines an incident light corresponding to the scanning light source image at a first angle, and the first lens group receives and refracts the inclined incident light. The second lens group inclines to the first angle, receives the incident light refracted by the first lens group and refracts the incident light, so that a visual field of the multi-visual-angle display device can be expanded.
Description
Technical Field
The invention relates to a multi-view display device.
Background
In terms of the prior art, a conventional naked-eye three-dimensional display is a time-multiplexed multi-view display device. The time-multiplexed multi-view display device sequentially projects a plurality of images to different angles of sight, and the right eye and the left eye of a viewer can respectively receive the images by different parallaxes. Disadvantages of the time-multiplexed multiview display device include: spatial modulators and system etendue that require high Frame Rate (Frame Rate) limit the viewing area.
Disclosure of Invention
The invention provides a multi-view display device, which uses a multi-view display device to tilt incident light corresponding to a scanning light source image and tilt a lens group to obtain the effect of space multiplexing, and uses a mode of reducing resolution to replace a larger view field, thereby increasing the viewable area of a common display device.
One embodiment of the present invention provides a multi-view display device for increasing M × N spatial multiplexing numbers required by a user to expand a viewing angle, wherein M is a horizontal pixel number, N is a vertical pixel number, and M, N are positive integers, the multi-view display device comprising: a projector, a first Lens group composed of Lens Array (Lens Array), and a second Lens group composed of cylindrical Lens Array (lensulant). The projector is internally provided with a scanning light source image, and the projector inclines an incident ray corresponding to the scanning light source image at a first angle; the first lens group receives the inclined incident light and refracts the incident light; and the second lens group inclines the first angle, receives the incident light refracted by the first lens group and refracts the incident light to ensure that a visual field of the multi-view display device has M × N space multiplex numbers.
In some embodiments, the first angle is defined as tan-1(1/N) degree.
In some embodiments, the multi-view display device further includes a fresnel lens disposed between the projector and the first lens group for focusing the incident light.
In some embodiments, the multi-view display device further includes a vertical diffuser for receiving the incident light refracted by the second lens group and diffusing the incident light, so that the viewing area of the multi-view display device has M × N spatial multiplexing numbers.
In some embodiments, the projector has a time-multiplexed function.
In some embodiments, when the number of light spots (spots) scanned by the projector is X, the number of light spots in the field of view of the multi-view display device is M × N × X, where X is a positive integer.
In some embodiments, the length D of the scanned light source image is defined as cos (the first angle)/N × (one screen pixel size).
In some embodiments, the Pitch (Pitch) L of the second lens group (lensculr) is M × N × D.
In some embodiments, when the number of light spots in the field of view of the multi-view display device is M × N × X, a resolution of the multi-view display device is reduced by M × N times.
In some embodiments, the first lens group may be formed by stacking an X-directional cylindrical lens array (X-lenticuler) and a Y-directional cylindrical lens array (Y-lenticuler).
Drawings
FIG. 1 is a schematic configuration diagram of a multi-view display device without spatial multiplexing.
Fig. 2 is a schematic structural diagram of a multi-view display device according to a first embodiment of the invention.
Fig. 3 is a schematic diagram illustrating a tilting operation of the multi-view display according to the first embodiment of the invention.
Fig. 4 is a schematic diagram of a screen display of a multi-view display device according to a first embodiment of the invention.
Fig. 5 is a schematic diagram illustrating a tilting operation of a multi-view display device according to a second embodiment of the invention.
FIG. 6 is a schematic diagram of a multi-view display device according to a second embodiment of the invention.
Wherein, the reference numbers:
110 projector
115 scanning light source images
120 Fresnel lens
130 first lens group
140 second lens group
150 vertical diffuser
160 scanning light source image imaging after lens
170 imaging of scanning light source image through inclined lens
300 screen pixel
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and elements are shown in simplified schematic form in the drawings.
The invention provides a multi-view display device, which tilts incident light corresponding to a scanning light source image and tilts a lens group, so that a manufactured angle amplification screen can combine the technical advantages of space multiplexing and time multiplexing to expand the visual field.
Fig. 1 is a schematic configuration diagram of a multi-view display device using only time multiplexing without spatial multiplexing. Referring to fig. 1, the multi-view display device includes a projector 110, a fresnel Lens 120, a first Lens assembly 130 formed by a Lens array (Lens array), a second Lens assembly 140 formed by a cylindrical Lens array (lensulant), and a vertical diffuser 150. The projector 110 has a scanning light source image 115, the first lens group 130 may be formed by overlapping an X-direction cylindrical lens array (X-lenticule) and a Y-direction cylindrical lens array (Y-lenticule), and the fresnel lens 120 may achieve an optical effect equal to that of a multi-lens by dividing the lens into a plurality of theoretically wireless concentric circular lines, because of the lines, the overall thickness of the lens is reduced. The Fresnel lens 120 can also be considered as a plurality of prisms arranged in a ring shape, wherein the edges are relatively sharp and the center is a relatively smooth convex surface. The multi-view display device disclosed in fig. 1 performs angle magnification through the fresnel lens 120, the first lens group 130, the second lens group 140 and the vertical diffuser 150, so as to achieve the multi-view display effect.
Fig. 2 is a schematic structural diagram of a multi-view display device according to a first embodiment of the invention. Although having the same structure as fig. 1, the technical concept of spatial multiplexing is added. The multi-view display device of the present invention utilizes the projector 110 to tilt the incident light corresponding to the scanned light source image 115 and tilt the second lens assembly 140, so that the multi-view display device using only the time multiplexing technique is more spatial multiplexing, thereby expanding more viewing areas.
As described above, the multi-view display device according to the first embodiment of the present invention has the technical concept of time multiplexing and spatial multiplexing, and uses the projector 110 with time multiplexing function, and obtains the spatial multiplexing effect by tilting the incident light corresponding to the scanning light source image 115 and tilting the second lens group 140, so as to reduce the resolution and replace the larger view field. In addition to the effect of the spatial multiplexing technique, it can be seen from the difference between the imaging 160 of the scanned light source image through the lens in fig. 1 and the imaging 170 of the scanned light source image through the tilted lens in fig. 2 that the multi-view display device in fig. 2 has a larger viewing area than the multi-view display device in fig. 1.
Fig. 3 is a schematic diagram illustrating a tilting operation of the multi-view display device according to the first embodiment of the invention. In fig. 3, M is the number of horizontal pixels, N is the number of vertical pixels, and X is the number of light spots (spots) scanned by the time-multiplexed projector 110, where M, N and X are positive integers. After the tilting operation, the number of viewing field spots of the multi-view display device of the present invention will be M × N × X, and the resolution will be decreased by M × N times. That is, the multi-view display device of the present invention has M × N groups of spatial multiplexing and X groups of temporal multiplexing.
For the incident light beam tilted to correspond to the scanned light source image 115 and the tilt angle δ of the second lens group 140, the formula δ tan is given-1(1/N) calculation. In other words, the tilt angle δ can be adjusted according to the user's requirement. Taking fig. 3 as an example, the user needs 2 × 2 sets of spatial multiplex numbers, and the angle δ is tan-1(1/2) ═ 26.6 degrees, where M equals 2 and N equals 2. The spatial multiplexing of 2 × 2 groups can be obtained by tilting the incident light of the scanned light source image 115 and the second lens group 140 by 26.6 degrees, as shown in fig. 3. The length D of the scanned illuminant image 115 can be obtained according to the formula D ═ cos (δ)/N × (screen pixel size). After calculating D by knowing N and the screen pixel size, the pitch L of the second lens group 140 can be calculated by the formula L-M × N × D. When the user needs the space multiplex number of 2 × 2 groups, the incident light of the scanning light source image 115 and the tilt angle δ of the second lens group 140 are adjusted to 26.6 degrees, and the first lens group 130 and the second lens group 140 are disposed at a required distance, at this time, 2 × 2-4 viewing areas can be displayed on the second lens group 140, as shown in fig. 3, the numbers are respectively 1-4, and in each 2 × 2-4 large-grid pixel in the screen pixel group 300, one scanning light source image 115 is respectively arranged in each viewing area 1-4.
Fig. 4 is a schematic diagram of a screen display of a multi-view display device according to a first embodiment of the invention. After the incident light of the scanning light source image 115 and the second lens group 140 are tilted by the light condensing or diffusing action of the fresnel lens 120, the first lens group 130, the second lens group 140 and the vertical diffuser 150, a pixel pattern that can be seen on the screen from a certain angle by an observer, that is, as shown in fig. 4, one pixel can be seen by arbitrarily taking 2 × 2 pixels.
Fig. 5 is a schematic diagram illustrating a tilting operation of a multi-view display device according to a second embodiment of the invention. In fig. 5, M is the number of horizontal pixels, N is the number of vertical pixels, X is the number of light spots (spots) scanned by the time-multiplexed projector 110, and M, N and X are positive integers. After the tilting operation, the number of viewing field spots of the multi-view display device of the present invention will be M × N × X, and the resolution will be decreased by M × N times. That is, the multi-view display device of the present invention has M × N groups of spatial multiplexing and X groups of temporal multiplexing.
The inclination angle delta corresponding to the incident light of the scanned light source image 115 and the inclination angle delta of the second lens group 140 is calculated according to the formula delta tan-1(1/N) calculation. In other words, the tilt angle δ can be adjusted according to the user's requirement. Taking fig. 5 as an example, the user needs 2 × 3 sets of spatial multiplexing, and the angle δ is tan-1(1/3) ═ 18.4 degrees, where M equals 2 and N equals 3. The incident light of the scanned light source image 115 and the second lens group 140 are tilted by 18.4 degrees, so as to obtain 2 × 3 spatial multiplexing numbers, as shown in fig. 5. The length D of the scanned illuminant image 115 can be obtained according to the formula D ═ cos (δ)/N × (screen pixel size). After calculating D from the known N and the screen pixel size, the pitch L of the second lens group (lensculr) 140 can be calculated by the formula L-M × N × D. When the user needs the space multiplex number of 2 × 3 groups, the incident light of the scanning light source image 115 and the tilt angle δ of the second lens group 140 are adjusted to 18.4 degrees, and the first lens group 130 and the second lens group 140 are disposed at a required distance, at this time, 2 × 3 — 6 viewing zones can be displayed on the second lens group 140, as shown in fig. 5, the numbers are respectively 1 to 6, and in each 2 × 3 large grid pixel in the screen pixel group 300, there is one scanning light source image 115 in each viewing zone 1 to 6.
FIG. 6 is a schematic diagram of a multi-view display device according to a second embodiment of the invention. After the incident light of the scanning light source image 115 and the second lens group 140 are tilted by the light condensing or diffusing action of the fresnel lens 120, the first lens group 130, the second lens group 140 and the vertical diffuser 150, a pixel pattern that can be seen on the screen from a certain angle by an observer, that is, as shown in fig. 6, one pixel can be seen by arbitrarily taking 2 × 3 pixels.
In summary, the present invention provides a multi-view display device, which uses a tilting lens assembly to tilt incident light corresponding to a scanned light source image to obtain a spatial multiplexing effect, and uses a mode of reducing resolution to obtain a larger viewing area, thereby increasing a viewable area. The tilting of the angle-magnifying screen made by the incident light of the scanning light source image and the lens assembly of the time-multiplexed projector can combine the original time-multiplexed technology and the space-multiplexing advantage newly added due to the tilting technology to expand the visual field.
While the invention has been described with respect to various embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A multi-view display device for providing a user with M x N spatial multiplexing numbers required to increase viewing angle, wherein M is the number of horizontal pixels, N is the number of vertical pixels, and M, N are positive integers, the multi-view display device comprising:
a projector, which is internally provided with a scanning light source image and inclines an incident light corresponding to the scanning light source image at a first angle;
a first lens group composed of lens array for receiving the inclined incident light and refracting it; and
and the second lens group inclines at the first angle, receives the incident light refracted by the first lens group and refracts the incident light so that a visual field of the multi-view display device has M × N spatial multiplex numbers.
2. A multi-view display device according to claim 1, characterised in that the first angle is defined as tan-1(1/N) degree.
3. A multi-view display device according to claim 1, further comprising:
a Fresnel lens set between the projector and the first lens set to focus the incident light.
4. A multi-view display device according to claim 1, further comprising:
a vertical diffuser for receiving the incident light refracted by the second lens set and diffusing the light to make the visual field of the multi-view display device have M × N spatial multiplex numbers.
5. The multiview display device of claim 1, wherein the projector has a time multiplexing function.
6. The multi-view display device of claim 5, wherein when the number of light spots scanned by the projector is X, the number of light spots in the field of view of the multi-view display device is M X N X, where X is a positive integer.
7. The multi-view display device of claim 1, wherein the length D of the scanned light source image is defined as cos (the first angle)/N x (a screen pixel size).
8. The multi-view display device of claim 7, wherein the pitch L of the second lens group is M x N x D.
9. The multi-view display device of claim 6, wherein when the number of light spots in the field of view of the multi-view display device is M X N X, a resolution of the multi-view display device is reduced by M X N.
10. The multi-view display device of claim 1, wherein the first lens group is formed by stacking an X-direction cylindrical lens array and a Y-direction cylindrical lens array.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610191034.2A CN107290862B (en) | 2016-03-30 | 2016-03-30 | Multi-view display device |
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| CN201610191034.2A CN107290862B (en) | 2016-03-30 | 2016-03-30 | Multi-view display device |
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| CN107290862A CN107290862A (en) | 2017-10-24 |
| CN107290862B true CN107290862B (en) | 2020-06-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109729330B (en) * | 2019-03-06 | 2023-03-14 | 成都工业学院 | High-resolution projection display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101167371A (en) * | 2005-04-29 | 2008-04-23 | 皇家飞利浦电子股份有限公司 | A stereoscopic display apparatus |
| CN102081239B (en) * | 2010-12-23 | 2012-05-30 | 隆元线 | Wide-angle naked eye stereo display system |
| CN103207511A (en) * | 2012-01-11 | 2013-07-17 | 台达电子工业股份有限公司 | Multi-view stereoscopic display |
| CN104641279A (en) * | 2012-09-14 | 2015-05-20 | 阿利奥斯拷贝公司 | Display screen, in particular for autostereoscopy |
| CN105182550A (en) * | 2014-05-26 | 2015-12-23 | 乐金显示有限公司 | Stereoscopic image display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI417630B (en) * | 2010-05-18 | 2013-12-01 | Delta Electronics Inc | Display apparatus for displaying multiple view angle images |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101167371A (en) * | 2005-04-29 | 2008-04-23 | 皇家飞利浦电子股份有限公司 | A stereoscopic display apparatus |
| CN102081239B (en) * | 2010-12-23 | 2012-05-30 | 隆元线 | Wide-angle naked eye stereo display system |
| CN103207511A (en) * | 2012-01-11 | 2013-07-17 | 台达电子工业股份有限公司 | Multi-view stereoscopic display |
| CN104641279A (en) * | 2012-09-14 | 2015-05-20 | 阿利奥斯拷贝公司 | Display screen, in particular for autostereoscopy |
| CN105182550A (en) * | 2014-05-26 | 2015-12-23 | 乐金显示有限公司 | Stereoscopic image display device |
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