CN1164974C - Automatic continuous cylindrical mirror producing process - Google Patents
Automatic continuous cylindrical mirror producing process Download PDFInfo
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- CN1164974C CN1164974C CNB011085983A CN01108598A CN1164974C CN 1164974 C CN1164974 C CN 1164974C CN B011085983 A CNB011085983 A CN B011085983A CN 01108598 A CN01108598 A CN 01108598A CN 1164974 C CN1164974 C CN 1164974C
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Abstract
The present invention relates to an automatic continuous cylindrical mirror producing process. The present invention comprises the steps that a transparent resin film formed by liquid light cured resin is coated on a supporting film; the transparent resin film is in a surface shape of a cylindrical mirror by a rolling light curing forming method; a light sensitive negative film is rolled to one side of the plane of the transparent resin film; the light sensitive negative film is exposed, the procedures of development, fixation, cleanness, baking, etc. of a negative film are carried out after exposure so that a black stripe with certain thickness is formed; one side of the black stripe is rolled with a light scattering film and a protective film with an electrostatic prevention function and a reflection prevention function; the following procedures are carried out. The automatic continuous large-scale production of the cylindrical mirror can be realized by the process of the present invention, and the present invention has the advantages of simple process and convenient operation.
Description
Affiliated technical field: the invention belongs to the preparation technology field of rear projection screen, specifically is the automatic continuous cylindrical mirror producing process of one of used constituent element of rear projection screen.
Background technology: in the prior art, cylindrical mirror and Fresnel Lenses are used and are applicable to rear projection screen.The structure of tradition cylindrical mirror is formed referring to Fig. 3, all there is cylinder both sides at cylindrical mirror, just there is difference in both radius-of-curvature, the reason of Chu Liing is to be determined by its projection pattern that adopts like this: adopt three rifles (CRT) projector, because the incident angle difference of three kinds of incident lights of red, green, blue, in order to correct aberration, so make the bilateral cylinder, and along with the development of shadow casting technique in recent years, it is more and more general that lcd projection tv becomes, and this just requires rear projection screen can adapt to projection TV must to watch.Shown in Figure 4 is the synoptic diagram of projection TV, and projection ray finally forms image through several secondary reflections of catoptron on projection screen.Along with projection image improves clearly, the number of picture elements of liquid crystal projector is brought up to 1,000,000 orders of magnitude from tens thousand of quantity of routine, and this just requires the single cylinder of cylindrical mirror can reach suitable width and eliminates the Morie fringe phenomenon that the liquid crystal projector pixel period causes.In concrete enforcement, need to reduce present cylindrical mirror width (about 0.7mm) to 0.3mm or littler.
Producing cylindrical mirror at present is to adopt thermoplastic resin compression molding or extrusion molding.And the method for thermoplastic shaping obtain the cylindrical mirror of above-mentioned suitable width will be very difficulty, reason is that temperature distributing disproportionation is even in the cooling procedure of thermoforming process, so thermal shrinkage can take place resin, it is curved that product can become, or the not first-class phenomenon of resin thermal shrinkage.
Black streaking on the cylindrical mirror is commonly used to improve the contrast of projected image.The art methods that is used for processing black streaking has a lot, such as offset printing, surface printing etc.No matter which kind of method, black streaking all should have position accurately, therefore, if single cylinder width reduces, then the arrangement contraposition of printed panel all can become difficult more in the preparation of printed panel and in the printing process.
The new mode of another kind of processing black streaking is to be covered on the sight side of rear projection screen with photosensitive binder (cementing agent loses bonding characteristic after exposure), projected light is by non-smooth side incident, make its exposure, focus area at the single cylinder separately of cylindrical mirror will lose bonding characteristic, unexposed zone still keeps cohesiveness, is covering one deck black developing agent from the light side, is bonded on the unexposed area, with the shortcoming of the method is that the black streaking that forms is in uneven thickness, particularly evident at boundary member.
The objective of the invention is for advantage that absorbs prior art and the defective that overcomes prior art, for the public provides a kind of novel automatic continuous cylindrical mirror producing process, the cylindrical mirror that technology of the present invention is produced only forms numerous single cylinder that suitable width is arranged of marshalling in a side, form and the corresponding black streaking that the certain position precision is arranged of the non-focus area of single cylinder at opposite side, cylindrical mirror itself and Fresnel Lenses are used on the rear projection screen of the lcd projection tv that is applicable to high definition, high image quality.
The objective of the invention is to realize by following technical proposals.
Summary of the invention: automatic continuous cylindrical mirror producing process of the present invention is:
(1) on the transparent support film, evenly is coated with the uniform liquid light-cured resin of last layer thickness;
(2) adopt rolling depression method to make above-mentioned transparent resin film give the surface configuration of cylindrical mirror, the ultraviolet ray irradiation makes light-cured resin solidify to form the cylinder microstructure;
(3) with the side of sensitization negative film (the moon is coated with egative film) spreading at above-mentioned transparent resin membrane plane, a promptly corresponding side with cylindrical structure;
(4) to above-mentioned sensitization negative film exposure, carry out development, photographic fixing, cleaning, the baking supervisor of egative film after the exposure, form certain thickness black streaking;
(5) spreading of one deck light-scattering film had a side of black streaking to transparent resin film;
(6) on light-scattering film, roll the diaphragm that one deck has the electrostatic prevention anti-reflective function again;
(7) enter subsequent step.
In the technique scheme, the transparent support film generally adopts the ultraviolet (uv) transmission film, and itself and light-cured resin have adhesive property preferably, and material can be selected polyphenyl dioctyl phthalate ethene, polycarbonate, Polyvinylchloride, PET film, plasticon etc. for use.
In the technique scheme, the thickness of the light-cured resin that is coated with on the transparent support film is according to the characteristic of cylindrical mirror and fixed, be generally 0.2mm～0.3mm, the flow that liquid light-cured resin is controlled in the edge of a knife of the viscosity that coating thickness can be by adjusting light-cured resin and the amount of feeding of transparent support film and plater and the gap of transparent support film is controlled effectively.
In the technique scheme, described exposure light source must be a directional light, the acquisition of directional light can be referring to the method for Fig. 6, utilizes the finedraw that forms between scattering light source and two shadow shields to obtain directional light, and the relative motion by light source and cylindrical mirror exposes the sensitization negative film one by one.
The present invention makes black streaking according to the sensitometric characteristic of sensitization negative film, i.e. the position of sensitive film sensitization is transparent after development, photographic fixing, and the position of sensitization then is not a black.It forms mechanism referring to Fig. 9.The sensitization negative film is through directional light irradiation exposure, because the style characteristic of the single cylinder of cylindrical mirror, to produce the optically focused effect to the directional light that shines on it, know according to figure, the pairing local sensitization negative film of adjacent two single cylinder intersections does not have light to pass through, promptly this part is unexposed, to local sensitization negative film, this part has just exposed opposite single cylinder with light optically focused, again through developing, the photographic fixing supervisor, Bao Guang position bleach then, the blackening of unexposed position, black streaking has just formed like this, and the benefit of Chu Liing is that positional precision that black streaking forms is higher and thickness is even like this, cost is lower, and technology is simple.
It should be noted that incident light must be a parallel beam, and can not adopt scattering light source, see shown in Figure 5, because the angle of incidence of light difference of single cylinder, the position of the black streaking that forms at the pairing position of single cylinder separately exists significant difference in the centre position and the position, edge of cylindrical mirror, when being used with Fresnel Lenses, because Fresnel Lenses can be refracted as directional light with the projection ray of incident, then at position, cylindrical mirror edge projection image part is blocked by the black streaking that is formed by the scattered light exposure, screen just can not reproduce all picture information.
The width of black streaking can be controlled by exposure intensity and time shutter, referring to Fig. 7, the aperture rate of cylindrical mirror by under the acquisition that establishes an equation:
P represents the width of single cylinder; D represents the thickness of cylindrical mirror; P ' represents the width of black streaking; D ' represents the thickness of black streaking.
θ＝tg
-1{(P-P’)/2D}
θ’＝tg
-1{P-P’/2(D+D’)}
The aperture rate=(θ-θ ')/θ
The aperture rate is big more, and then the width of black streaking is more little, and projection ray is subjected to the obstacle of black streaking just more little through the emergent light behind the cylindrical mirror, so not only at the front or the left and right screen of watching with great visual angle of screen, just can obtain the higher image of brightness on the screen.Above-mentioned aperture rate is 100% to deduct the loss percentage of the projection ray that causes because of black streaking, is to be that the mutual relationship of the D '/D of parameter and aperture rate is referring to Fig. 8 with likening to of black streaking and cylindrical mirror thickness.
From the above, technology of the present invention can realize automatic continuous cylindrical mirror large-scale production, and technology is simple, easy to operate.The cylindrical mirror that technology of the present invention is produced only forms numerous single cylinder that suitable width is arranged of marshalling in a side, form and the corresponding black streaking that the certain position precision is arranged of the non-focus area of single cylinder at opposite side, cylindrical mirror itself and Fresnel Lenses are used on the rear projection screen of the lcd projection tv that is applicable to high definition, high image quality.Not only self die wear is less for the cylindrical mirror made of method thus, and the cylindrical mirror of producing not only can obtain to stablize, accurate cylindrical shape, and the width of single cylinder can reach 0.3mm or lower.
Be described in further detail the present invention below by embodiment, the present invention is not limited only to described embodiment.
Description of drawings: accompanying drawing 1 is the automatic continuous technological process of production equipment synoptic diagram of the embodiment of the invention.
Accompanying drawing 2 is the cylindrical mirror product structure synoptic diagram that the present invention produced;
Accompanying drawing 3 is the contour structures synoptic diagram of conventional cylindrical mirror;
Accompanying drawing 4 is the lcd projection tv structural representation;
Accompanying drawing 5 is under the scattered light exposure, the position difference synoptic diagram that black streaking forms;
Accompanying drawing 6 is the equipment that forms black streaking in cylindrical mirror plane one side;
Accompanying drawing 7 is the optical design synoptic diagram of cylindrical mirror of the present invention;
Accompanying drawing 8 is aperture rate and black streaking and the mutual relationship figure of the ratio of cylindrical mirror thickness;
Accompanying drawing 9 is the exposure forming process synoptic diagram of black streaking;
The black streaking structural representation of accompanying drawing 10 on cylindrical mirror, forming;
Among the figure: 1, support membrane; 2, plater; 3, conveying roller; 4, guide roller; 5, home roll; 6, secondary roller; 7, ultraviolet lamp; 8, calendering roller; 9, sensitization negative film; 10, exposure area; 11 development sections; 12, photographic fixing section; 13, cleaning section; 14, baking section; 15, light-scattering film; 16, diaphragm; 17, black streaking; 18, little cylinder; 19, cylinder; 20, rear projection screen; 21 large reflective mirrors; 22, small reflector; 23, projector; 24, casing; 25, single cylinder; 26, light source; 27, core; 28, boundary member; 29, focus area (negative film exposure area); 30, non-focus area (negative film unexposed area); 31, directional light.
Embodiment:
Embodiment one
Present embodiment describes technological process of the present invention in detail by accompanying drawing 1, as shown in the figure:
(1) support membrane 1 is transported to plater 2 places by conveying roller 3, by the blade in the plater 2 (as scraping film or smear) liquid light-cured resin is evenly coated on the support membrane 1 whole surface, and forming a layer thickness is the uniform transparent resin film of 0.2mm;
(2) transparent resin film enters between home roll 5 and the secondary roller 6 by guide roller 4, the surface configuration that cylindrical mirror is arranged on the home roll 5, the general metal die that adopts cylindrical mirror, the effect that is equipped with secondary roller 6 passes to transparent resin film with the surface structure of cylindrical mirror metal die, make light-cured resin solidify to form the cylinder microstructure by the ultraviolet irradiation in the ultraviolet lamp 7 (illumination is 100000 to 250000 luxs, and speed of feed is the 0.1-0.5 meter per second); Film the curing at ultraviolet lamp 7 places can be by regulating ultraviolet intensity, the length of rayed time, film the amount of feeding and the characteristic of the light-cured resin solidification process of regulating light-cured resin arbitrarily.
(3) by a pair of calendering roller 8 with the side of sensitization negative film (the moon is coated with egative film) 9 spreadings on the plane of transparent resin film, a promptly corresponding side with cylindrical structure;
(4) transparent resin film enters 9 exposures of the 10 pairs of sensitization negative films in exposure area, carries out development, photographic fixing, cleaning, baking (as Figure 11,12,13, the 14) supervisor of egative film after the exposure, forms certain thickness black streaking; Development, photographic fixing, cleaning, baking etc. can be adopted prior art.
(5) 15 spreadings of one deck light-scattering film had a side of black streaking by a pair of calendering roller 8 to transparent resin film;
(6) by another layer protecting film 16 that calendering roller 8 will have the electrostatic prevention anti-reflective function is rolled on the light-scattering film 15;
(7) subsequent step.
Claims (3)
1, automatic continuous cylindrical mirror producing process is characterized in that its processing step is:
A, on the transparent support film, evenly be coated with the uniform liquid light-cured resin of last layer thickness, form transparent resin film;
B, employing rolling depression method make transparent resin film give the surface configuration of cylindrical mirror, and the ultraviolet ray irradiation makes light-cured resin solidify to form the cylinder microstructure;
C, with the side of sensitization negative film spreading at above-mentioned transparent resin membrane plane, a promptly corresponding side with cylindrical structure;
D, to the exposure of above-mentioned sensitization negative film, utilize the finedraw that forms between scattering light source and two shadow shields to obtain directional light, relative motion by light source and cylindrical mirror exposes the sensitization negative film one by one, carry out development, photographic fixing, cleaning, the baking supervisor of egative film after the exposure, form certain thickness black streaking;
E, the spreading of one deck light-scattering film had a side of black streaking to transparent resin film;
F, on light-scattering film, roll the diaphragm that one deck has the electrostatic prevention anti-reflective function again;
G, enter subsequent step.
2, automatic continuous cylindrical mirror producing process according to claim 1 is characterized in that described transparent support film selects any one in polyphenyl dioctyl phthalate ethene, polycarbonate, Polyvinylchloride, PET film, the plasticon for use.
3, automatic continuous cylindrical mirror producing process according to claim 1 is characterized in that the thickness of the light-cured resin that is coated with on the described transparent support film is 0.2mm～0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011085983A CN1164974C (en) | 2001-12-20 | 2001-12-20 | Automatic continuous cylindrical mirror producing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011085983A CN1164974C (en) | 2001-12-20 | 2001-12-20 | Automatic continuous cylindrical mirror producing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1350204A CN1350204A (en) | 2002-05-22 |
| CN1164974C true CN1164974C (en) | 2004-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011085983A Expired - Fee Related CN1164974C (en) | 2001-12-20 | 2001-12-20 | Automatic continuous cylindrical mirror producing process |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451826C (en) * | 2002-12-26 | 2009-01-14 | 精碟科技股份有限公司 | Rear-projection screen, optical element and manufacturing method thereof |
| CN1321332C (en) * | 2005-04-30 | 2007-06-13 | 霍永峰 | Cylindrical lens component and producing method, rear projection screen and rear-projection television |
| CN106772716A (en) * | 2017-02-07 | 2017-05-31 | 长沙青波光电科技有限公司 | The preparation method of big NA aspheric designs |
| CN109909813A (en) * | 2019-03-04 | 2019-06-21 | 合肥嘉东光学股份有限公司 | ZnSe semicylinder mirror development technology |
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2001
- 2001-12-20 CN CNB011085983A patent/CN1164974C/en not_active Expired - Fee Related
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| CN1350204A (en) | 2002-05-22 |
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Granted publication date: 20040901 Termination date: 20101220 |