CN100373256C - Method for manufacturing rear projection screen - Google Patents
Method for manufacturing rear projection screen Download PDFInfo
- Publication number
- CN100373256C CN100373256C CNB2004100283933A CN200410028393A CN100373256C CN 100373256 C CN100373256 C CN 100373256C CN B2004100283933 A CNB2004100283933 A CN B2004100283933A CN 200410028393 A CN200410028393 A CN 200410028393A CN 100373256 C CN100373256 C CN 100373256C
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- rear projection
- projection screen
- light
- manufacture method
- screen manufacture
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Abstract
The present invention provides a method for manufacturing back projection screens. The present invention comprises the steps: firstly, projecting parallel light beams to a columnar part of a columnar lens panel to alternatively from a plurality of bright regions and dark regions on the surface of a contralateral panel on the columnar part; secondly, using a photoinduction device to monitor the distribution of the bright regions and the dark regions on the surface of the panel; lastly, non-transparent materials are overspread on the dark regions.
Description
Technical field
The present invention especially makes the rear projection screen manufacture method of degree of accuracy about a kind of rear projection screen manufacture method about a kind of light shield layer (light-shielding layer) that improves rear projection screen.
Background technology
The simplified schematic diagram of Figure 1A for showing that known rear projection screen 100 constitutes.As shown in Figure 1, mainly both are constituted rear projection screen 100 by Fresnel lens (Fresnel lens) 102 and lens pillar panel (Lenticularlens sheet) 104.Light beam via 106 outputs of projector optical camera lens, via it being changed into directional light after Fresnel lens 102 refractions, this directional light is again via refraction and the focusing of cylindrical portion (lenticular portions) 104a of lens pillar panel 104, can make human eye be seen image with light-ray condensing in 104 surface and the imagings of lens pillar panel.
Figure 1B is the stereographic map of rear projection screen 100, with the clear blackstreak 108 that shows the light shield layer (light-shielding layer) that constitutes lens pillar panel 104.Above-mentioned directional light can be focused into the bright rays of strip on panel 104 surfaces because of cylindrical portion 104a, so except that the extraction regions of this bright rays, other zone needs to constitute a light shield layer with blackstreak (black stripe) 108 coverings, the function of this blackstreak 108 is to prevent that inner parasitic light from scattering to lens pillar panel 104 surfaces and causing image to mix, and stops outside scattered light to be incident to lens pillar panel 104 surperficial back reflections to cause and dazzle optical phenomenon.
Fig. 2 A to Fig. 2 E is a production process figure, shows the known production method of the lens pillar panel 104 with blackstreak.
Shown in Fig. 2 A, one substrate 114 that is formed with cylindrical portion 112 at first is provided, be bonded in and be coated with last layer photo-hardening bonding agent 116 on substrate 114 even surfaces, utilize ultraviolet light 118 vertical incidence cylindrical portion 112 again, because of ultraviolet light 118 can form extraction regions on substrate 114 even surfaces after cylindrical portion 112 focuses on, the part photo-hardening bonding agent 116a that so is positioned at this extraction regions is promptly hardened and is lost bonding ability, and the remainder except that extraction regions (promptly answering shaded areas) 116b still provides bonding ability.Bonding, shown in Fig. 2 D, will comprise that the black layer 120 of gum 122 is attached on the photo-hardening bonding agent 116, after drawing back gum 122, what photo-hardening bonding agent 116 was still had a cementability answers shaded areas 116b to stick together to have black layer 120, and forms the blackstreak 124 that constitutes light shield layer.
Yet this blackstreak 124 manufacture methods need with the rolling mode different optical layer of photo-hardening bonding agent 1 16, black layer 120 or the like of fitting, and need to use large-scale rolling facility.More significant disadvantage is that the generation type of this blackstreak 124 is easy to generate alignment error, often can't accurately aim at applying under the bigger situation of panel size; And when separating with gum 122, black layer 120, reduces the effect of covering because the effect of cohesion can make blackstreak 124 its borders of formation produce uneven phenomenon.And when this known screen manufacture, when dwindling spacing between the lens pillar with the demand of further raising resolution, the influence of above-mentioned foozle will be more remarkable.
Summary of the invention
Therefore, purpose of the present invention is providing a kind of rear projection screen manufacture method, and its light shield layer that can effectively improve rear projection screen is made degree of accuracy and avoided the problems referred to above fully.
According to design of the present invention, a kind of its step of rear projection screen manufacture method alternately forms a plurality of clear zones and dark space at first parallel beam being projected to the cylindrical portion of a lens pillar panel with the panel surface in the cylindrical portion offside.Then utilize the distribution in clear zone and dark space on the Photoinduction device monitoring panel surface, again light-proof material is covered with the dark space.Moreover, but the configuration of the present invention's emulation back projection TV optical projection system actual light part forms a projecting light path, and make light after this projecting light path is advanced, be projected to the lens pillar panel again, and can make the screen of making meet the design light path of back projection TV fully, reach best projection effect.
Collocation design by ink discharge device of the present invention and Photoinduction device, utilize Photoinduction device monitoring clear zone and the direct way that forms blackstreak in the lens pillar panel surface with spraying method, high more when resolution requirement and need heal blackstreak meticulous the time, it makes degree of accuracy can obtain good control; And when desire forms large-sized screen panel, the present invention only need increase the scanning area of paint finishing on panel, can reach the effect of accurate painting black striped, thus do not need the employed large-scale rolling facility of well known practice fully, and can not produce the big problem of well known practice alignment error.
Moreover, way by ink-jet design of the present invention and the complete light path of collocation emulation back projection TV optical projection system, when in making screen process, carrying out printing ink spraying step, the light and shade striped that presented on the lens pillar this moment presents truly promptly thereafter that screen is installed on the back projection TV, and the light and shade striped that the optical projection system throw light should occur on lens pillar during to screen distributes.Therefore, after screen is installed on this back projection TV, can not produce fully according to the zone that paint finishing sprayed of the present invention design and to aim at or the problem of offset error, and its optical path change of the back projection TV elasticity adjustment immediately of installing of the regional visual screen institute desire of paint finishing institute desire spraying and coating synchronously are thereon.
Description of drawings
The simplified schematic diagram of Figure 1A for showing that known rear projection screen constitutes;
Figure 1B is the stereographic map of known rear projection screen, with the clear blackstreak that shows the light shield layer that constitutes the lens pillar panel;
Fig. 2 A to Fig. 2 E is a production process figure, shows the known production method of the lens pillar panel with this blackstreak;
Fig. 3 is a synoptic diagram, shows an embodiment of rear projection screen manufacture method of the present invention;
Fig. 4 is a synoptic diagram, shows the action of paint finishing of the present invention along the axial two-dimensional freedom scanning of x, y lens pillar panel.
The reference numeral explanation:
10 optical projection systems
12 Fresnel lenses
14 lens pillar panels
The 14a cylindrical portion
16 paint finishings
18 ink discharge devices
20 Photoinduction devices
22 lens combination
24 projector optical camera lenses
26 catoptrons
28 panel surfaces
30 blackstreaks
100 rear projection screens
102 Fresnel lenses
104 lens pillar panels
104a, 112 cylindrical portion
106 projector optical camera lenses
108 blackstreaks
114 substrates
116 photo-hardening bonding agents
118 ultraviolet lights
120 black layers
122 gums
124 blackstreaks
Embodiment
Fig. 3 is a synoptic diagram, shows an embodiment of rear projection screen manufacture method of the present invention.Because of rear projection screen is in order to present the projection image that an optical system produces, the projection image that produces of a back projection TV optical projection system for example, but so the present invention at first the actual light part of emulation back projection TV optical projection system 10 dispose and form a projecting light path, light is advanced along this projecting light path.The first half of Fig. 3 shows the projecting light path of artificial actual light spare configuration, and the visible light that the projector optical camera lens 24 of optical projection system 10 sends enters a Fresnel lens (Fresnel lens) 12 again after catoptron 26 reflections.Note that at this illustrated light path is only simplified for illustrative usefulness, which kind of back projection TV the projecting light path of this simulation can desire to be mounted to according to this screen fully, does variation and disposed by the actual light part of the optical projection system of this back projection TV.
Therefore, the visible light that projector optical camera lens 24 sends is advanced the back by Fresnel lens 12 along the projecting light path of this simulation, and Fresnel lens 12 is converted into parallel beam, and bonding this parallel beam is projected on the cylindrical portion 14a of lens pillar panel 14.Parallel beam can alternately form the focusing clear zone of tool high brightness and the non-focusing dark space of low-light level in a panel surface 28 of cylindrical portion offside via refraction and the focusing of cylindrical portion 14a, and constitutes light and dark striped on panel surface 28.
Then, the present invention utilizes a paint finishing 16 with ink discharge device 18 and Photoinduction device 20 to make the blackstreak 30 that constitutes light shield layer.According to the present invention, when paint finishing 16 with the axial two-dimensional freedom of x shown in Figure 4, y, closely evenly scan the panel surface 28 of lens pillar panel, this moment, Photoinduction device 20 can monitor the different brightness that focus on clear zone and non-focusing dark space, closing and opening in order to control ink discharge device 18.When Photoinduction device 20 monitored the focusing clear zone of high brightness, this zone promptly was denoted as the non-spraying district; When Photoinduction device 20 monitored the non-focusing dark space of low-light level, this zone promptly was denoted as the spraying district.When paint finishing 16 is passed through the spraying district, be about to the light-proof material that it loaded, for example a printing ink is applied to this zone to form the blackstreak 30 of light shield layer via ink discharge device 18; Otherwise 18 of ink discharge devices stop the spraying action when passing through the non-spraying district.Therefore, can on panel surface 28, do selective spray, and can accurately form the blackstreak 30 that constitutes light shield layer by the collocation of ink discharge device 18 and Photoinduction device 20.
Moreover Photoinduction device 20 can comprise a lens combination 22, and the light that enters this Photoinduction device 20 focuses on via lens combination 22 earlier, can make Photoinduction device 20 can accurately distinguish this focusing clear zone and non-focusing dark space.This Photoinduction device 20 for example can be a Charged Coupled Device (charge-coupled device; Or an optical sensor (photo-detector CCD); PD).
Again, the quantity and the allocation position of ink discharge device 18 do not limit, and visual panel size and the actual demand of making are changed.
Collocation design by ink discharge device 18 of the present invention and Photoinduction device 20, utilize Photoinduction device 20 monitoring clear zones and the direct way that forms blackstreak 30 in the lens pillar panel surface with spraying method, high more when resolution requirement and need heal blackstreak 30 meticulous the time, it makes degree of accuracy can obtain good control; And when desire forms large-sized screen panel, the present invention only need increase the scanning area of paint finishing 16 on panel, can reach the effect of accurate painting black striped 30, so do not need the employed large-scale rolling facility of well known practice fully, and can not produce the big problem of well known practice alignment error.
On the other hand, utilize the self-type of focusing of lens pillar because of the present invention system, utilization paint finishing 16 is directly coated opaque material the dark space on lens pillar surface, by this design, the present invention's emulation back projection TV optical projection system actual light part configuration at the beginning forms a projecting light path, and makes light promptly become good collocation mode along the way that is projected to lens pillar panel 14 after this projecting light path is advanced again.That is, way by ink-jet design of the present invention and the complete light path of collocation emulation back projection TV optical projection system, when in making screen process, carrying out printing ink spraying step, the light and shade striped that presented on the lens pillar this moment presents truly promptly thereafter that screen is installed on the back projection TV, and the light and shade striped that optical projection system 10 throw lights should occur on lens pillar during to screen distributes.Therefore, after screen is installed on this back projection TV, can not produce the problem of aligning or offset error fully according to its zone that is coated with of paint finishing of the present invention's design.Knownly make the way of blackstreak via laminated rolling, after screen is installed on this projection TV, the problem that causes blackstreak accurately to meet with dark space that complete light path presented in the back projection TV easily, this shortcoming the present invention can avoid fully.Moreover, according to design of the present invention, the way of blackstreak is knownly made via laminated rolling thereon in the zone of 16 desires of paint finishing spraying its optical path change of the back projection TV elasticity adjustment immediately of installing of visual screen institute desire and coating synchronously fully, fully this elasticity of making of tool not.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be included in the claim its equivalent modifications of carrying out or change.
Claims (12)
1. a rear projection screen manufacture method comprises the steps:
Parallel beam is projected to the cylindrical portion of a lens pillar panel, alternately forms plural clear zone and dark space with panel surface in this cylindrical portion offside;
Utilize a Photoinduction device to monitor the distribution of this clear zone and this dark space;
Light-proof material is covered with this dark space.
2. rear projection screen manufacture method as claimed in claim 1 is characterized in that: this parallel beam is made of the light by a Fresnel lens.
3. rear projection screen manufacture method as claimed in claim 1 is characterized in that: this Photoinduction device is a Charged Coupled Device.
4. rear projection screen manufacture method as claimed in claim 1 is characterized in that: this Photoinduction device is an optical sensor.
5. rear projection screen manufacture method as claimed in claim 1 is characterized in that: the light that enters this Photoinduction device in this Photoinduction device monitoring step focuses on via a lens combination earlier.
6. rear projection screen manufacture method as claimed in claim 1 is characterized in that: this light-proof material is a printing ink, and this printing ink is applied to this dark space by an ink discharge device.
7. rear projection screen manufacture method, this rear projection screen are in order to presenting the projection image that an optical system produces, and this rear projection screen manufacture method comprises the steps:
The light spare configuration of this optical system of emulation forms a projecting light path;
Follow this projecting light path to advance the back light by a Fresnel lens;
The cylindrical portion of this ray cast to one lens pillar panel that will be by this Fresnel lens alternately forms a plurality of clear zones and dark space with the panel surface at this cylindrical portion offside;
Utilize a Photoinduction device to monitor this clear zone and this dark space;
Light-proof material is covered with this dark space.
8. rear projection screen manufacture method as claimed in claim 7 is characterized in that: this optical system is the optical projection system of a back projection TV.
9. rear projection screen manufacture method as claimed in claim 7 is characterized in that: this Photoinduction device is a Charged Coupled Device.
10. rear projection screen manufacture method as claimed in claim 7 is characterized in that: this Photoinduction device is an optical sensor.
11. rear projection screen manufacture method as claimed in claim 7 is characterized in that: the light that enters this Photoinduction device in this Photoinduction device monitoring step focuses on via a lens combination earlier.
12. rear projection screen manufacture method as claimed in claim 7 is characterized in that: this light-proof material is a printing ink, and this printing ink is applied to this dark space by an ink discharge device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100283933A CN100373256C (en) | 2004-03-11 | 2004-03-11 | Method for manufacturing rear projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100283933A CN100373256C (en) | 2004-03-11 | 2004-03-11 | Method for manufacturing rear projection screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1667501A CN1667501A (en) | 2005-09-14 |
| CN100373256C true CN100373256C (en) | 2008-03-05 |
Family
ID=35038650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100283933A Expired - Fee Related CN100373256C (en) | 2004-03-11 | 2004-03-11 | Method for manufacturing rear projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100373256C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5870224A (en) * | 1995-10-25 | 1999-02-09 | Toppan Printing Company Limited | Lenticular sheet, rear-projection screen or TV using the same, and fabrication method for said lenticular sheet |
| JP2002333673A (en) * | 2001-05-09 | 2002-11-22 | Dainippon Printing Co Ltd | Method for manufacturing lenticular lens sheet having light shielding zone |
| US6594079B1 (en) * | 1999-08-04 | 2003-07-15 | Agilent Technologies, Inc. | Image screen and method of forming anti-reflective layer thereon |
| WO2003069408A1 (en) * | 2002-02-18 | 2003-08-21 | Synelec Telecom Multimedia | Method for producing a display screen |
-
2004
- 2004-03-11 CN CNB2004100283933A patent/CN100373256C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5870224A (en) * | 1995-10-25 | 1999-02-09 | Toppan Printing Company Limited | Lenticular sheet, rear-projection screen or TV using the same, and fabrication method for said lenticular sheet |
| US6594079B1 (en) * | 1999-08-04 | 2003-07-15 | Agilent Technologies, Inc. | Image screen and method of forming anti-reflective layer thereon |
| JP2002333673A (en) * | 2001-05-09 | 2002-11-22 | Dainippon Printing Co Ltd | Method for manufacturing lenticular lens sheet having light shielding zone |
| WO2003069408A1 (en) * | 2002-02-18 | 2003-08-21 | Synelec Telecom Multimedia | Method for producing a display screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1667501A (en) | 2005-09-14 |
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Granted publication date: 20080305 Termination date: 20110311 |