NZ734485B2 - Display device - Google Patents
Display device Download PDFInfo
- Publication number
- NZ734485B2 NZ734485B2 NZ734485A NZ73448515A NZ734485B2 NZ 734485 B2 NZ734485 B2 NZ 734485B2 NZ 734485 A NZ734485 A NZ 734485A NZ 73448515 A NZ73448515 A NZ 73448515A NZ 734485 B2 NZ734485 B2 NZ 734485B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- screen
- projecting unit
- image
- area
- covering
- Prior art date
Links
- 230000000149 penetrating Effects 0.000 claims abstract description 3
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 230000001737 promoting Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 208000003464 Asthenopia Diseases 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/0147—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on thermo-optic effects
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/0305—Constructional arrangements
- G02F1/0311—Structural association of optical elements, e.g. lenses, polarizers, phase plates, with the crystal
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
-
- 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
-
- 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
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
-
- 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
-
- 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
- G03B21/62—Translucent screens
Abstract
The invention discloses a display device, which is applied to rear projection system, comprising: a screen, which is curved; incident rays penetrating into a concave side of the screen, then being transmitted by the screen, and form parallel rays to be emitted out from the convex side of the screen; a projecting unit, configured to project rays of an image to the screen, the image including a valid area and an invalid area; a covering plank, located between the screen and the projecting unit, configured to cover the invalid area of the image for getting the light of the valid area of the image emitted by the projecting unit to project to the screen. The invention eliminates the fuzzy borders of the projected images with the use of the covering plank, and eliminates the light spot ghost shadow of projected images with the use of the curved screen, increasing the utilization rate of the light source, highlighting the layering of images, thus promoting sensual experience of viewers. a projecting unit, configured to project rays of an image to the screen, the image including a valid area and an invalid area; a covering plank, located between the screen and the projecting unit, configured to cover the invalid area of the image for getting the light of the valid area of the image emitted by the projecting unit to project to the screen. The invention eliminates the fuzzy borders of the projected images with the use of the covering plank, and eliminates the light spot ghost shadow of projected images with the use of the curved screen, increasing the utilization rate of the light source, highlighting the layering of images, thus promoting sensual experience of viewers.
Description
DISPLAY DEVICE
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a field of optics, more specifically, to a
curved display device.
2. Description of the Related Art
The existing rear projection screen is usually the flat screen, as
the distance from the screen to a viewer’s left eye is different from the
distance from the screen to the viewer’s right eye, problems such as no
ideal effect, getting visual fatigue easily and poor visual effect always
exists. Furthermore, there are other problems concerning: the light spot
ghost shadow 6 (see Figure 1) of projection light source, the scattered
beam 5 which is the projected light beam, and the fuzzy borders around the
projected image
SUMMARY OF THE INVENTION
In order to solve the problems of the existing rear projection
screen, as are described above, the invention provides a display device,
with the specific purpose of eliminating the light spot ghost shadow and
the fuzzy borders, and of promoting sensual experience of viewers.
The technical solution of the invention is:
A display device, applied to a rear projection system, comprising:
A screen, which is curved; incident rays penetrating into a
concave side of the screen, then being transmitted by the screen, and form
parallel rays to be emitted out from the convex side of the screen.
A projecting unit, configured to project rays of an image to the
screen, the image including a valid area and an invalid area.
A cover in the form of a plurality of covering planks, located
between the screen and the projecting unit, configured to cover the invalid
area of the image for getting the light of the valid area of the image emitted
by the projecting unit to project to the screen,
wherein a center area of each covering plank of said plurality of
covering planks is a hollow area of the respective covering plank, with
increasing size of the hollow areas in sequence in a direction from the
projecting unit towards the screen, wherein the plurality of covering planks
are positioned between the projecting unit and the screen equidistantly for
eliminating the invalid area of the image.
Preferably, the screen is made from translucent resin.
Preferably, the projecting unit is a silicon based liquid crystal
projecting unit or a digital light procession projecting unit.
Preferably, the plurality of covering planks are arranged between
the projecting unit and the screen in parallel and in sequence, with an
orientation along a direction of emitting the light of the image emitted by
the projecting unit, for covering the invalid area of the image.
Preferably, the projecting unit comprises:
a receiver module, for receiving projected images; and
a projector module, connecting to the receiver module,
configured to project lights of the projected images to the screen.
The benefits of the invention compared to the prior art are:
Present invention eliminates the fuzzy borders of
projected images with the use of the cover, and eliminates the light spot
ghost shadow of projected images with the use of the curved screen made
from translucent resin, increasing the utilization rate of the light source,
highlighting the layering of images, thus promoting sensual experience of
viewers.
BRIEF DESCRIPTIONS OF THE DRAWINGS
Figure 1 is a diagrammatic drawing of light spot ghost shadow of
a projection light source of a rear projection screen in the art;
Figure 2 is a structural schematic drawing of a display device of
an embodiment according to the invention;
Figure 3 is a schematic drawing of rays casting of a screen made
from translucent resin of an embodiment according to the invention;
Figure 4a is a frame schematic drawing of the elliptical valid area
of projected image of an embodiment according to the invention;
Figure 4b is a frame schematic drawing of the rectangular valid
area of a projected image of an embodiment according to the invention;
Figure 4c is a frame schematic drawing of the polygonal valid area
of a projected image of an embodiment according to the invention.
DETAILED DESCRIPTIONS
The following is the further description of the invention by
combining the drawing and the embodiments, and it can not be the
limitation for the invention.
As shown in Figure 2-4, a display device, applied to the rear
projection system, comprising: a screen 1, a cover 2 and a projecting unit
3, wherein the screen 1 is curved, configured to make incident rays
penetrate into the concave side of the screen 1 then transmit from the
convex side of the screen 1, projecting out in the form of parallel rays 4;
the projecting unit 3 is configured to project rays of an image to the screen
1, and the image includes a valid area A and an invalid area B; the cover 2
is located between the screen 1 and the projecting unit 3, configured to
cover the invalid area B of the image for getting the light of the valid area
A of the image emitted by the projecting unit 3 to project to the screen 1.
In this embodiment, the display device is applied to the rear
projection system, which eliminates the fuzzy borders of projected images
with the use of the cover 2, this not only improves the contrast of projected
images, but also eliminates the light spot ghost shadow 6 (see Figure 1 and
Figure 3), with the use of the screen 1, which is able to let incident rays
penetrate through itself and form parallel rays 4, increasing the utilization
rate of light source. Moreover, the use of the curved screen 1 highlights the
layering of images, thus promoting sensual experience of viewers.
In a preferable embodiment, the screen 1 is made from translucent
resin. Furthermore, the screen 1 can use curved Fresnel lens
whose surface is covered by a semi-transparent layer. Fresnel lens is a
sheet lens which is made from polyolefin resin using injection molding,
one side of its lens surface is a mirror side, the other side of that is engraved
with concentric circles placed in sequence from small to large, which is
able to let incident rays penetrate through the lens and emit out parallel
rays ， thus improving the contrast of images, more uniformly, and
eliminating the light spot ghost shadow of projected images.
In a preferable embodiment, the projecting unit 3 is a silicon based
liquid crystal projecting unit or a digital light procession projecting unit..
Liquid Crystal on Silicon (LCOS) uses a reflex process to form
images, with 40% of utilization efficiency. Compared with other projection
technology, a remarkable advantage of LCOS technology is high resolution,
and projecting units with LCOS technology have further advantages such
as high efficiency of the light utilization, small size, high aperture ratio and
so on.
Digital Light Procession (DLP) has a technology core based on a
digital microscope system consisting of tens of thousands of lenses, with a
distance of less than 1 μm between each lens, thereby achieving extremely
high-duty factor. Reducing the distance among pixels of the projected
images to the limit could generate seamless digital pictures, which can
keep good image sharpness at any size, without any pixel scar or sieve pore
caused by other technologies, thus achieving the level of high-
definition LCD in displayed images. DLP projecting technology can
promote black layer and shadow effect. When a movie is played, DLP
movie theatre technology can display 350 trillion colors, which are more
than 8 times over the movie.
In a preferable embodiment, there are more than one of the covers 2,
a number of the covers are arranged between the projecting unit 3 and the
screen 1 in parallel and in sequence, with an orientation along a direction
of emitting light of the image emitted by the projecting unit 3, for covering
the invalid area B of the projected image.
As shown in Figures 3-4, in a preferable embodiment, center areas of
the covers 2 are hollow areas, and the plurality of covers with increasing
size of hollow areas in sequence, positioned between the projecting unit 3
and the screen 1 equidistantly for eliminating the invalid area B (fuzzy
borders) of the projected image, thus displaying the valid area A, which is
elliptical, rectangular, polygonal (see Figure 4a-4c) or in other shapes.
In a preferable embodiment, the projecting unit 3 comprises: a
receiver module and a projector module, wherein the receiver module is
configured to receive projected images; wherein the projector module,
connected to the receiver module, is configured to project lights of the
projected images to the screen 1.
When it is used, a video interface could be set in the projecting unit 3,
such as HDMI, MIPI or RGB interface, and the projecting unit 3 is
connected with an external control chip through the video interface. When
the video interface of the projecting unit 3 have been connected with that
of the control chip, the projecting unit 3 can receive video signals
transmitted by the control chip, and with the use of the cover 2, the
projecting unit 3 can project the valid area A of the received image to the
curved screen 1 made from resin material, finally displaying the valid area
A of the image on the curved screen 1 of a robot.
The above description is referred only to the preferred
embodiments of the invention, and it does not limit the implement method
and the protecting scope of the invention. It is obvious for the skilled in
the art that the changing and variation made by the specification and
drawings of the invention should fall into the scope of the invention.
Claims (5)
1. Display device, applied to a rear projection system, comprising: a screen, which is curved; incident rays penetrating into a concave side of the screen, then being transmitted by the screen, and form parallel rays to be emitted out from the convex side of the screen ; a projecting unit, configured to project rays of an image to the screen, the image including a valid area and an invalid area; a plurality of covering planks, located between the screen and the projecting unit, configured to cover the invalid area of the image for getting the light of the valid area of the image emitted by the projecting unit to project to the screen; wherein a center area of each covering plank of said plurality of covering planks is a hollow area of the respective covering plank, with increasing size of the hollow areas in sequence in a direction from the projecting unit towards the screen, wherein the plurality of covering planks are positioned between the projecting unit and the screen equidistantly for eliminating the invalid area of the image.
2. The display device as claimed in Claim 1, wherein the screen is made from translucent resin.
3. The display device as claimed in Claim 1, wherein the projecting unit is a silicon based liquid crystal projecting unit or a digital light procession projecting unit.
4. The display device as claimed in Claim 1, wherein the plurality of covering planks are arranged between the projecting unit and the screen in parallel and in sequence, with an orientation along a direction of emitting light of the image emitted by the projecting unit, for covering the invalid area of the image.
5. The display device as claimed in Claim 1, wherein the projecting unit comprises: a receiver module, for receiving projected images; and a projector module, connecting to the receiver module, configured to project lights of the projected images to the screen.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510014573.4 | 2015-01-12 | ||
| CN201510014573.4A CN105842963A (en) | 2015-01-12 | 2015-01-12 | Display device |
| PCT/CN2015/081396 WO2016112627A1 (en) | 2015-01-12 | 2015-06-12 | Display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ734485A NZ734485A (en) | 2020-11-27 |
| NZ734485B2 true NZ734485B2 (en) | 2021-03-02 |
Family
ID=
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11520164B2 (en) | Multi-focal display system and method | |
| KR20090115167A (en) | Aperture correction for lenticular screens | |
| US9400415B2 (en) | Image displaying device and method | |
| US11087666B2 (en) | 3D display substrate, 3D display device and display method | |
| KR101019378B1 (en) | High contrast stereoscopic projection system | |
| US20180180979A1 (en) | Projection device and projection system | |
| WO2019000948A1 (en) | Three-dimensional stereoscopic display panel, and display method and display apparatus therefor | |
| AU2015101926A4 (en) | Display device | |
| CN105700282A (en) | Rear projection device | |
| CN103489374A (en) | Multi-screen spliced seamless display screen | |
| US20070236801A1 (en) | Time-multiplexed 3D display system with beam splitter | |
| CN106291945A (en) | A kind of display floater and display device | |
| US20160195730A1 (en) | Stereoscopic Display Device and Stereoscopic Display Method | |
| US20080259281A1 (en) | Apparatus and method for displaying three-dimensional image | |
| WO2017206543A1 (en) | Display apparatus and driving method therefor | |
| CN207557642U (en) | A kind of oriented light-guiding device of projection device | |
| US20100201606A1 (en) | Frame expanding glasses and frame expanding visual system | |
| CN110018573A (en) | Combined type display panel | |
| KR20120107297A (en) | Beam projector capable of simultaneous and multi-faced beam projection | |
| NZ734485B2 (en) | Display device | |
| OA18304A (en) | A display device | |
| JP2015046848A (en) | Image display device | |
| KR101426457B1 (en) | Method to remove overlapping appearance of three dimensional imagine by applying to time division display system | |
| RU2117413C1 (en) | Method for displaying of color tv picture | |
| JPH05948Y2 (en) |