CN105824181A - Screen and multi-screen system - Google Patents
Screen and multi-screen system Download PDFInfo
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- CN105824181A CN105824181A CN201510011287.2A CN201510011287A CN105824181A CN 105824181 A CN105824181 A CN 105824181A CN 201510011287 A CN201510011287 A CN 201510011287A CN 105824181 A CN105824181 A CN 105824181A
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Abstract
The invention provides a screen and a multi-screen system. The screen comprises an angle amplifying unit and a first turning unit, wherein the angle amplifying unit is provided with a first lens group and a second lens group, the first lens group and the second lens group are arranged along a first direction, the first lens group comprises multiple first lenses, each first lens has a first curvature radius, the second lens group comprises multiple second lenses, each second lens has a second curvature radius, and the amplification of the angle amplifying unit is the ratio of the first curvature radius to the second curvature radius; and the first turning unit is arranged between the first lens group and the second lens group, the first turning unit is provided with multiple first turning prisms, the multiple first turning prisms are arranged along a second direction, and the first direction is vertical with the second direction. Through arranging the first turning unit between the first lens group and the second lens group of the angle amplifying unit, the light path advancing direction is changed, and the light utilization rate is improved.
Description
Technical field
The present invention is about a kind of screen, especially with regard to the screen of a kind of projection arrangement of arranging in pairs or groups.
Background technology
In recent years, along with the development of flat display apparatus, this technical products is applied to arise at the historic moment, such as smart mobile phone, panel computer, handheld game device, domestic TV, motion picture screen, advertisement video wall etc..Wherein, domestic TV, motion picture screen and advertisement video wall more can have specific demand particular for screen size.Therefore, in order to meet demand to large scale screen, general manufacturer is in addition to manufacturing bigger screen, it is possible to take the splicing in a matrix fashion of multiple screens, to realize the effect of giant-screen.The former practice, although can obtain preferably visual effect, and it is not necessary to the problems such as light path coupling in view of each projection arrangement.But special process apparatus of must arranging in pairs or groups, therefore cost of manufacture is high, the real the most attainable non-practice.Therefore, most manufacturers mode using the latter makes the display device of giant-screen more now.
Described in brought forward, but during according to the method for multiple screen splicings, during by the splicing in a matrix fashion of multiple screens, when must consider each screen splicing, gap between the light path design of each projection arrangement light path coupling and the frame of each screen, frame is caused the most still for the sprite of multiple splicings rather than a single picture, and then the visual effect that impact is overall.In order to solve this kind of defect; known to Mosaic screen take more change frame design; so that the narrowed width of frame; but narrow frame not only can reduce beyond the protective capability of frame, frame intensity; still cannot solve the impact for visual effect of the gap between frame, frame, the degree of improvement is the most limited.
In view of this, how by providing a kind of screen improving screen splicing peripheral vision effect and multi-screen system, it is for this industry problem demanding prompt solution.
Summary of the invention
Because the problems referred to above, present invention is primarily targeted at a kind of screen improving screen splicing peripheral vision effect of offer and multi-screen system.
For reaching above-mentioned purpose, the present invention provides a kind of screen, including angle enlargement unit and the first steering unit.
Angle enlargement unit has the first battery of lens and the second battery of lens, and the first battery of lens and the second battery of lens arrange in the first direction.First battery of lens has multiple first lens, and respectively these first lens have first curvature radius, second battery of lens has multiple second lens, and respectively these second lens have second curvature radius, and the enlargement ratio of angle enlargement unit is the ratio of first curvature radius and second curvature radius.
First steering unit is arranged between the first battery of lens and the second battery of lens, and the first steering unit has multiple first and turns to prism, and the plurality of first turns to prism to arrange in a second direction, and wherein first direction is vertical with second direction.
In a preferred embodiment of the present invention, also including diffusion unit, diffusion unit has multiple diffuser, and the plurality of diffuser arranges along third direction, and wherein third direction is vertical with second direction with first direction respectively.
In a preferred embodiment of the present invention, diffusion unit is arranged between the side of angle enlargement unit or the first battery of lens of angle enlargement unit and the second battery of lens.
In a preferred embodiment of the present invention, also including the second steering unit, be arranged at the side of angle enlargement unit, the second steering unit has multiple second and turns to prism, and the plurality of second turns to prism to arrange along third direction.
In a preferred embodiment of the present invention, the first steering unit or the second steering unit are linear Fresnel lens.
In a preferred embodiment of the present invention, also include a black-matrix layer, be arranged at second battery of lens side away from this first battery of lens.
In a preferred embodiment of the present invention, black-matrix layer is arranged at a surface of the second battery of lens.
The present invention more can provide a multi-screen system, and multi-screen system includes multiple projection arrangement and multiple multiple screens being disposed adjacent.And screen is arranged at a light emission side of the plurality of projection arrangement.Respectively this screen includes angle enlargement unit and the first steering unit.
Angle enlargement unit has the first battery of lens and the second battery of lens, and the first battery of lens and the second battery of lens arrange in the first direction.First battery of lens has multiple first lens, and, respectively these first lens have first curvature radius, and the second battery of lens has multiple second lens, and respectively these second lens have second curvature radius, the enlargement ratio of angle enlargement unit is the ratio of first curvature radius and second curvature radius.
First steering unit is arranged between the first battery of lens and the second battery of lens, first steering unit has multiple first and turns to prism, and the plurality of first turn to prism to arrange in a second direction, in the most the plurality of screen, at least two arranges along third direction, and first direction, second direction are orthogonal with third direction.
In a preferred embodiment of the present invention, respectively this screen also includes a diffusion unit, has multiple diffuser, and the plurality of diffuser arranges along this third direction.
In a preferred embodiment of the present invention, diffusion unit is arranged between the side of angle enlargement unit or the first battery of lens of angle enlargement unit and the second battery of lens.
In a preferred embodiment of the present invention, respectively this screen also includes the second steering unit, is arranged at the side of angle enlargement unit, and the second steering unit has multiple second and turns to prism, and the plurality of second turns to prism to arrange along third direction.
In a preferred embodiment of the present invention, the first steering unit or the second steering unit are linear Fresnel lens.
In a preferred embodiment of the present invention, respectively this screen also includes black-matrix layer, is arranged at second battery of lens side away from the first battery of lens.
In a preferred embodiment of the present invention, black-matrix layer is arranged at a surface of the second battery of lens.
The present invention to change the direction that light path is carried out by being arranged at by the first steering unit between the first battery of lens and second battery of lens of angle enlargement unit, can improve the utilization rate of light, and adjust the distance between multiple images of each ken imaging.
Accompanying drawing explanation
Fig. 1 is the exploded perspective view of the screen of the present invention.
Fig. 2 is the top view of the screen of Fig. 1.
Fig. 3 is the side view of the screen of Fig. 1.
Fig. 4 is that the screen of Fig. 1 is arranged in pairs or groups the side schematic view that a housing uses.
Fig. 5 is the schematic diagram of the one screen in the multi-screen system of the present invention.
Fig. 6 is the schematic diagram of the multi-screen system of the present invention.
Fig. 7 is the schematic diagram of multiple screen splicings of Fig. 6.
Wherein, description of reference numerals is as follows:
1,31: screen
10: angle enlargement unit
101: the first battery of lens
102: the second battery of lens
12: the first steering units
14: diffusion unit
16: the second steering units
18,318: black-matrix layer
2,32: housing
21: viscose
3: multi-screen system
33: projection arrangement
A, B: pitch
I: luminous point
D: skew
O: axis
R1: first curvature radius
R2: second curvature radius
θ, Φ: the angle of divergence
W1: outer width of frame
W2: width
Detailed description of the invention
Hereinafter with reference to correlative type, a kind of screen according to present pre-ferred embodiments and multi-screen system being described, the most identical element will be illustrated with identical reference marks.
Meanwhile, following example and graphic in, relevant element non-immediate to the present invention all has been omitted from and not shown；And each interelement size relationship is only asked and is readily understood by graphic, it is not used to limit actual ratio.
Projection arrangement illustrated herein can be optical digital computing (DigitalLightProcessing；DLP) projection display or liquid crystal projection apparatus (LiquidCrystalDisplay；Or monocrystal silicon liquid crystal display (LiquidCrystalOnSiliconSystem, LCOSSystem) etc. has the equipment of projection display funciton LCD),.
Please refer to the exploded perspective view of the screen that Fig. 1 to Fig. 4, Fig. 1 are the present invention.Fig. 2, Fig. 3 are top view and the side view of the screen of Fig. 1.Fig. 4 is that the screen of Fig. 1 is arranged in pairs or groups the side schematic view that a housing uses.
The present embodiment is a kind of screen 1, and it includes angle enlargement unit 10 and the first steering unit 12.Special instruction, in order to make it easy to understand, distance between each element in figure, size are exaggerated with detail characteristic, therefore size Ying Fei of drawing is as the condition limiting the present invention.
The angle enlargement unit 10 of the present embodiment has the first battery of lens 101 and the second battery of lens 102, and the first battery of lens 101 and the second battery of lens 102 (X-direction) in the first direction arrange.The light of entry angle amplifying unit 10, it will collected by the first battery of lens 101 and first imaging, after again through the ken plane of the second battery of lens 102 re-imaging to the place of user.
Specifically, first battery of lens 101 has multiple first lens, and respectively these first lens have first curvature radius R1, second battery of lens 102 has multiple second lens, and respectively these second lens have second curvature radius R2, the enlargement ratio of angle enlargement unit 10 is the ratio of first curvature radius R1 and second curvature radius R2.That is, angle of divergence θ of the incident illumination of entry angle amplifying unit 10 can be zoomed into angle of divergence Φ (referring to Fig. 3) by first curvature radius R1 and the second battery of lens 102 second curvature radius R2 adjusting the first battery of lens 101.First curvature radius R1 of such as the present embodiment and the ratio of second curvature radius R2 are 30, and therefore, angle of divergence Φ after amplification is 30 times of angle of divergence θ.
Furthermore, multiple first lens of first battery of lens 101 of the present embodiment are (Y-direction) arrangements in a second direction, and similarly, multiple second lens of the second battery of lens 102 are (Y-direction) arrangements in a second direction.And first lens of the present embodiment, the second lens are strip lens, and there is identical orientation.The angle enlargement unit 10 of the present embodiment can be such as pair of lamina lens pillar, but is not limited system.
And, the first battery of lens 101 herein and the second battery of lens 102 for having made by the transparent material of high index of refraction, such as, can be ultraviolet hardening resin, thermosetting resin or plastic cement.And the plurality of first lens, generally circular in shape, oval, the triangle of the plurality of second lens or square geometry etc..
First steering unit 12 is arranged between the first battery of lens 101 and the second battery of lens 102, first steering unit 12 has multiple first and turns to prism, and the plurality of first turn to prism (Y-direction) in a second direction to arrange, wherein first direction is vertical with second direction.First steering unit 12 can make the light entered be diverted rear parallel entrance the second battery of lens 102.Additionally, the present embodiment the first steering unit 12 is linear Fresnel lens.
The screen 1 of the present embodiment also includes diffusion unit 14 so that after low-angle light can be diffused into high angle scattered light, be transferred to viewing side.Diffusion unit 14 has multiple diffuser, and the plurality of diffuser arranges along third direction (Z-direction), and wherein third direction is vertical with second direction with first direction respectively.And in the present embodiment, diffusion unit 14 may be disposed between the first battery of lens 101 and second battery of lens 102 of angle enlargement unit 10, but not with this position for limiting.Also can there is angle enlargement unit 10 side (on the path that light is carried out) that diffusion unit 14 is arranged at by an embodiment.
The screen 1 of the present embodiment also includes the second steering unit 16, is arranged at the side of angle enlargement unit 10.Second steering unit 16 has multiple second and turns to prism, and the plurality of second turns to prism to arrange along third direction (Z-direction).Furthermore, multiple the second of second steering unit 16 of the present embodiment turns to the arrangement mode of prism identical with multiple diffuser arrangement modes of diffusion unit 14, and each second turns to prism correspondence respectively this diffuser to arrange.And, the first steering unit 12 can make with the second steering unit 16 collocation, and light is all diverted (effect that the present embodiment turns to is collimation) in first direction (X-direction), third direction (Z-direction).Second steering unit 16 of the present embodiment can be linear Fresnel lens, but is not limited system.
The screen 1 of the present embodiment also includes a black-matrix layer 18, is arranged at second battery of lens 102 side away from the first battery of lens 101.Furthermore, black-matrix layer 18 is arranged at a surface of the second battery of lens 102.Black-matrix layer 18 is a shading element, is made up of the black dark slide of multiple strips, and is arranged between pixel to cover, absorb non-essential light, and improves the contrast ratio of the image of entirety.Black-matrix layer 18 can directly be needed on the exiting surface of the second battery of lens 102 or be an individual member, not with the present embodiment draw for limit.
Then, please with particular reference to Fig. 4 and Fig. 5, Fig. 4 is that the screen of Fig. 1 is arranged in pairs or groups the side schematic view that a housing uses, and Fig. 5 is the schematic diagram of the one screen in the multi-screen system of the present invention.
Furthermore, Fig. 4 is that the screen 1 of Fig. 1 is assembled in housing 2, and the present embodiment can assemble by the way of gluing, such as, can be coated with viscose 21 in the side of angle enlargement unit 10 and the first steering unit 12, then be fixed on housing 2.
Being limited to the shape of housing 2 itself, most housings 2 all influences whether overall light path effective coverage, namely the light of the part covered by housing 2 will be shielded.Therefore, in order to reduce the housing 2 impact on light path, first steering unit 12 is arranged between the first battery of lens 101 and the second battery of lens 102 by the present embodiment, after light is first collected by the first battery of lens 101, turned to by the first steering unit 12 again, then amplify through the second battery of lens 102 and be sent to viewing side.Otherwise, if the present embodiment configures as known screen, steering unit is configured at the side of angle enlargement unit so that light carries out angle enlargement after being first diverted again, the light portion after being diverted then can be made to be blocked by housing, and the visual effect of screen periphery is reduced.
Furthermore, first steering unit 12 is arranged between the first battery of lens 101 and the second battery of lens 102, when light is sequentially through the first battery of lens 101, first steering unit 12, second battery of lens 102 also can make each deflection of optical point (referring to Fig. 4 and Fig. 5), as can be seen from Figure 4, enter the light of screen 1, each lens through the first battery of lens 101, it is divided into different light paths, again through each lens of the second battery of lens 102, gather diverse location, pitch B (referring to Fig. 4 and Fig. 5) will be had between each luminous point, compare pitch A of incident luminous point, pitch B and pitch A have offset d, in other words, luminous point and the Distance Shortened of housing 2 after skew.As a example by Fig. 5, the luminous point on the axis O left side with the axis O of screen as separation, can be made to have a side-play amount to the left, the luminous point on the right of axis O then has a side-play amount to the right.And, picture is represented by dotted lines knows the position not offseting luminous point.And, Fig. 5 illustrates for convenience, does not show black-matrix layer 18.
Then, refer to Fig. 6 and Fig. 7.Fig. 6 is the schematic diagram of the multi-screen system of the present invention.Fig. 7 is the schematic diagram of multiple screen splicings of Fig. 6.Supplementary notes, Fig. 6 illustrates for convenience, only illustrate projection arrangement with and the relativeness of multiple screen, and non-actual disposition, only for conveniently understand projection arrangement with and the imaging relations of multiple screen and take this kind of illustration.
The present embodiment is multi-screen system 3, and multi-screen system 3 includes multiple projection arrangement 33 and multiple multiple screens 31 being disposed adjacent.In the plurality of screen 31, at least two arranges along third direction (Z-direction), and first direction (X-direction), second direction (Y-direction) are orthogonal with third direction (Z-direction).And screen 31 is arranged at a light emission side of the plurality of projection arrangement 33.The screen 31 of the present embodiment can be screen 1 as in the foregoing embodiment, but not with application previous embodiment screen 1 for restriction.Screen 31 internal structure will not be described again herein.
The plurality of projection arrangement 33 can form multiple ken on the plurality of screen 31, to realize allowing observer's right and left eyes can be respectively seen the adjacent ken, forms parallax and watches the purpose of stereoscopic image.
Additionally, each screen 31 of the present embodiment each has housing 32, housing 32 has outer width of frame w1, and housing 32 is able to fixed by the component in each screen 31 and screen 31 provides the effect of a protection.And the black-matrix layer 318 of the screen 31 of the present embodiment, black-matrix layer 318 is made up of the black dark slide of multiple strips, and the black dark slide of each strip has a width w2, the present embodiment is the width close or identical more than or equal to twice (2w1) by the width w2 of strip dark slide is adjusted to the outer width of frame w1 with adjacent housing, therefore, visually housing 32 will have similar outward appearance to black-matrix layer 318, housing 32 is the most also noticeable, splices, to reduce, to improve, the problem that multiple screens 31 make the visual effect of entirety reduce.The w1 of the present embodiment is as a example by 0.1mm, w2 are as 0.2mm, but is not limited system.Additionally, in another embodiment, also can there is a gap between adjacent housing, in this embodiment, the width of strip dark slide then can be adjusted to the housing width of frame of twice and the totalling in gap, so that having consistent viewing effect during viewing.
In addition, if coordinating the design of previous embodiment, first steering unit 12 is arranged between the first battery of lens 101 and the second battery of lens 102, dissipates distribution (referring to Fig. 4 and Fig. 5) when light sequentially also can make each image present through first battery of lens the 101, first steering unit the 12, second battery of lens 102.As can be seen from Figure 7, image presents and dissipates distribution the luminous point I distance of neighbouring two screen 31 stitching portions can be made to be closer to (at drawing dashed box), the vision of reinforced external frame 32 and black-matrix layer 318 relatively fruit, make user be less susceptible to discover multi-screen 31 and splice the impact of housing 32, to reach similar seamless spliced visual effect.
In sum, the present embodiment can be by being arranged at the first steering unit between the first battery of lens and second battery of lens of angle enlargement unit, to change the direction that light path is carried out, improve the utilization rate of light, and adjust the distance between the plurality of image of each ken imaging.
During additionally, the present invention is applied in multi-screen system, more can be by adjusting the width of the strip dark slide of the black-matrix layer of screen, in the way of coordinating the width of frame of the housing of screen, to promote visual effect.
In consideration of it, the present invention can provide a kind of screen improving screen splicing peripheral vision effect and multi-screen system.
The foregoing is only illustrative, rather than be restricted.Any spirit and scope without departing from the present invention, and the equivalent modifications carrying out it or change, be intended to be limited solely by appended claims protection domain.
Claims (14)
1. a screen, it is characterised in that including:
One angle enlargement unit, there is one first battery of lens and one second battery of lens, and this first battery of lens arranges along a first direction with this second battery of lens, this first battery of lens has multiple first lens, and respectively these first lens have a first curvature radius, this second battery of lens has multiple second lens, and respectively these second lens have a second curvature radius, and the enlargement ratio of this angle enlargement unit is the ratio of this first curvature radius and this second curvature radius；And
One first steering unit, is arranged between this first battery of lens and this second battery of lens, and this first steering unit has multiple first and turns to prism, and the plurality of first turns to prism to arrange along a second direction, and wherein this first direction is vertical with this second direction.
2. screen as claimed in claim 1, it is characterised in that also including a diffusion unit, have multiple diffuser, and the plurality of diffuser arranges along a third direction, wherein this third direction is vertical with this second direction with this first direction respectively.
3. screen as claimed in claim 2, it is characterised in that wherein this diffusion unit is arranged between the side of this angle enlargement unit or this first battery of lens of this angle enlargement unit and this second battery of lens.
4. screen as claimed in claim 2 or claim 3, it is characterised in that also including one second steering unit, be arranged at the side of this angle enlargement unit, this second steering unit has multiple second and turns to prism, and the plurality of second turns to prism to arrange along this third direction.
5. screen as claimed in claim 4, it is characterised in that wherein this first steering unit or this second steering unit are a linear Fresnel lens.
6. screen as claimed in claim 1, it is characterised in that also include a black-matrix layer, be arranged at this second battery of lens side away from this first battery of lens.
7. screen as claimed in claim 6, it is characterised in that wherein this black-matrix layer is arranged at a surface of this second battery of lens.
8. a multi-screen system, it is characterised in that including:
Multiple projection arrangements；And
Multiple multiple screens being disposed adjacent, are arranged at a light emission side of the plurality of projection arrangement, and respectively this screen includes:
One angle enlargement unit, there is one first battery of lens and one second battery of lens, and this first battery of lens arranges along a first direction with this second battery of lens, this first battery of lens has multiple first lens, and respectively these first lens have a first curvature radius, this second battery of lens has multiple second lens, and respectively these second lens have a second curvature radius, and the enlargement ratio of this angle enlargement unit is the ratio of this first curvature radius and this second curvature radius；And
One first steering unit, is arranged between this first battery of lens and this second battery of lens, and this first steering unit has multiple first and turns to prism, and the plurality of first turns to prism to arrange along a second direction,
In the most the plurality of screen, at least two arranges along a third direction, and this first direction, this second direction are orthogonal with this third direction.
9. multi-screen system as claimed in claim 8, it is characterised in that respectively this screen also includes a diffusion unit, has multiple diffuser, and the plurality of diffuser arranges along this third direction.
10. multi-screen system as claimed in claim 9, it is characterised in that wherein this diffusion unit is arranged between the side of this angle enlargement unit or this first battery of lens of this angle enlargement unit and this second battery of lens.
11. multi-screen systems as described in claim 9 or 10, it is characterized in that, respectively this screen also includes one second steering unit, is arranged at the side of this angle enlargement unit, this second steering unit has multiple second and turns to prism, and the plurality of second turns to prism to arrange along this third direction.
12. multi-screen systems as claimed in claim 11, it is characterised in that wherein this first steering unit or this second steering unit are a linear Fresnel lens.
13. multi-screen systems as claimed in claim 8, it is characterised in that respectively this screen also includes a black-matrix layer, are arranged at this second battery of lens side away from this first battery of lens.
14. multi-screen systems as claimed in claim 13, it is characterised in that wherein this black-matrix layer is arranged at a surface of this second battery of lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510011287.2A CN105824181B (en) | 2015-01-09 | 2015-01-09 | Screen and multi-screen system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510011287.2A CN105824181B (en) | 2015-01-09 | 2015-01-09 | Screen and multi-screen system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105824181A true CN105824181A (en) | 2016-08-03 |
| CN105824181B CN105824181B (en) | 2017-12-15 |
Family
ID=56514230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510011287.2A Expired - Fee Related CN105824181B (en) | 2015-01-09 | 2015-01-09 | Screen and multi-screen system |
Country Status (1)
| Country | Link |
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| CN (1) | CN105824181B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054513A (en) * | 2016-08-19 | 2016-10-26 | 简铭镇 | Ultra-short-focus projection curtain |
| CN111929977A (en) * | 2020-10-15 | 2020-11-13 | 成都菲斯特科技有限公司 | Projection screen and projection system |
| CN115061290A (en) * | 2022-06-23 | 2022-09-16 | 福州京东方光电科技有限公司 | 3D display device and display system |
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| US5206761A (en) * | 1991-03-27 | 1993-04-27 | Hitachi, Ltd. | Large-screen projection type display |
| CN1228545A (en) * | 1998-02-23 | 1999-09-15 | 大日本印刷株式会社 | Rear projection screen |
| CN1438538A (en) * | 2002-02-15 | 2003-08-27 | 东芝照明技术株式会社 | Projecting device and large video-frequency device |
| CN1542542A (en) * | 2003-02-06 | 2004-11-03 | ���ǵ�����ʽ���� | Wide viewing angle screen and projection television comprising the same |
| CN1862290A (en) * | 2005-05-10 | 2006-11-15 | 精工爱普生株式会社 | Microlens, and method for manufacturing a microlens, optical plate, diffusing plate |
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2015
- 2015-01-09 CN CN201510011287.2A patent/CN105824181B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5206761A (en) * | 1991-03-27 | 1993-04-27 | Hitachi, Ltd. | Large-screen projection type display |
| CN1228545A (en) * | 1998-02-23 | 1999-09-15 | 大日本印刷株式会社 | Rear projection screen |
| CN1438538A (en) * | 2002-02-15 | 2003-08-27 | 东芝照明技术株式会社 | Projecting device and large video-frequency device |
| CN1542542A (en) * | 2003-02-06 | 2004-11-03 | ���ǵ�����ʽ���� | Wide viewing angle screen and projection television comprising the same |
| CN1862290A (en) * | 2005-05-10 | 2006-11-15 | 精工爱普生株式会社 | Microlens, and method for manufacturing a microlens, optical plate, diffusing plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054513A (en) * | 2016-08-19 | 2016-10-26 | 简铭镇 | Ultra-short-focus projection curtain |
| CN111929977A (en) * | 2020-10-15 | 2020-11-13 | 成都菲斯特科技有限公司 | Projection screen and projection system |
| CN115061290A (en) * | 2022-06-23 | 2022-09-16 | 福州京东方光电科技有限公司 | 3D display device and display system |
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| CN105824181B (en) | 2017-12-15 |
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