CN101514797B - Illuminating system - Google Patents
Illuminating system Download PDFInfo
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- CN101514797B CN101514797B CN2009100793445A CN200910079344A CN101514797B CN 101514797 B CN101514797 B CN 101514797B CN 2009100793445 A CN2009100793445 A CN 2009100793445A CN 200910079344 A CN200910079344 A CN 200910079344A CN 101514797 B CN101514797 B CN 101514797B
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Abstract
The invention provides an illuminating system, comprising the following parts: a lattice luminescent display unit and a first optical element, wherein, the light emitted from the lattice luminescent unit is optically collected by the first optical element on a first image-forming block with scattering effect to generate a first optical illumination. A second optical element is comprised when in actual needs, the first optical illumination output is optically enlarged or diminished by the second optical element to generate a second optical illumination output; by adjusting the focus of the first optical element or the distance between the lattice luminescent display unit and the first optical element, the space among the luminous spots of the formed first optical illumination is less than the size of the luminous spots and no gap exists among the luminous spots in the first optical illumination. By adopting lattice illuminating source and forming single light source illuminating effect through optical processing, the system has the advantages of higher reliability and lower price.
Description
Technical field
The present invention relates to illuminator, particularly relate to the illuminator that adopts the LED dot-matrix array to realize.
Background technology
The LED lamp is called Sony ericsson mobile comm ab again, and because of its long service life, size can be done lessly, and can control its brightness by the electric current that control is carried in the LED lamp, and the LED lamp can have by multiple color.Therefore use the LED lamp as image display, in giant-screen ad system, large screen television receiving system, be extensive use of.
But, the LED lamp forms LED lamp array on the circuit board because need being fixed on, make and have the gap between the LED lamp, when the image that people watch led array to show with closer distance, can see tangible pixel interval region, cause the problem image blurring, that picture quality is low.
Equally, in the cathode-ray tube display based on fluorescent display screen, the requirement according to resolution ratio on fluorescent display screen horizontal and vertical is divided into a plurality of pixels, and is gapped between the pixel.Cathode-ray is beaten at pixel, make pixel luminous, beat gapped between pixel then can be not luminous, the image of watching cathode-ray tube display to show with closer distance as people, can see tangible pixel interval region, cause the problem image blurring, that picture quality is low.
Equally, in other various displays that show based on dot matrix, as LCD, plasma scope etc., because the restriction of manufacturing process, the gap of pixel always exists in the display, when the image that people watch these displays to show with closer distance, can see tangible pixel interval region, cause the problem image blurring, that picture quality is low.
Summary of the invention
Technical problem to be solved by this invention is how to improve the image display effect that shows based on dot matrix, and it is low to eliminate the image blurring and picture quality that cause in the gap between the dot matrix.The present invention makes the image that demonstrates not have the pixel gap after adopting optical means that image is carried out optical treatment, thereby improves image display effect, even closely watch, picture quality also is improved.
The term explanation: the dot matrix gap of indication is meant the not light-emitting zone between two luminous points visually experiencing of people when two adjacent luminous points are simultaneously luminous herein.The dot matrix gap of indication be zero eliminate in the dot matrix gap or dot matrix between very close to each otherly between the very close to each other or luminous point be meant that sending out adjacent spot for two exists significantly not light-emitting zone when simultaneously luminous between people's impression visually is less than two luminous points.
The term explanation: the scattering effect of so-called image-forming block is meant when light shines on the image-forming block, if the reflection-type image-forming block, then light will reflect with a plurality of directions, if the transmission-type image-forming block, then light will reflect with a plurality of directions.
For addressing the above problem, the technical solution of proposition is:
1, a kind of method that improves image display effect, a kind of method is to comprise the steps:
The first step, to be carried out optics by imagery exploitation first optical element that array of light spots constitutes dwindles and has on first image-forming block of dispersion effect first optical image of generation, the spacing of luminous point is less than or equal to the size of luminous point in the optical image in first optical image that forms, and makes in first optical image very close to each other between the luminous point;
In second step, utilize second optical element to carry out optics first optical image and be amplified in second optical image that forms the dot pattern picture on second image-forming block;
First image-forming block and second image-forming block can constitute with curtain, and described curtain can be a rear projection screen, also can be reflection type screens.On open was the implementation method that discloses rear projection screen in the Chinese patent application that on May 12nd, 2004, publication number was CN1495518A, and as citations of the present invention, way of reference is for quoting in full.When using rear projection screen, be similar to the rear-projection projector equipment, the original graph image source is positioned at the back side (back) of screen, and the observer is positioned at the front of screen.When using reflection type screen, the original graph image source is positioned at the front of screen, and the observer also is positioned at the front of screen, and its effect is similar to projector equipment.But the present invention and projector equipment have basic difference, and projector equipment is to project on the screen after image is shone image by optics amplification and spotlight; And optical element of the present invention is to solve the original graph image source, and particularly there is the problem of tangible grain effect in the problem of image blurring that the interlattice gaps such as advertisement display that constitute as LED lamp curtain wall, LED lamp produce when closely watching this image.Certainly the present invention has been except having solved this problem, also can regulate the multiplication factor of second optical element and position and original image is amplified or dwindle demonstration.And this amplification and the processing dwindled be to amplify and dwindle based on optics is linear fully, is different from the interpolation processing in the Digital Image Processing or takes out and handle an image blurring and edge sawtooth effect that produces.Therefore according to realization of the present invention, to greatly improve the display effect of dot matrix class image display, LED lamp array display etc., amplify or dwindle and handle and can not reduce definition or produce image blurring problem but also can carry out linear optics to original image.
The image display that is made of pixel is because the gap between the pixel, and there is grain effect in the image that people are seen, promptly during close together, can feel that image is to be made of discrete pixel particle, obviously feels interval between the pixel.Consequently image display effect is poor, even fuzzy.Pass through said method, the image that image display shows carries out optics by first optical element to be dwindled, corresponding first optical image that forms is reduced, pixel distance in the image has also been dwindled, when the size of pixel during greater than the gap between the pixel, by dwindling of image, because there is diffusion effect in luminous point in the imaging plane imaging, promptly because the scattering of imaging plane, can make the optical imagery zone diffusion of luminous point, can make the gap between the imaging point of adjacent pixels point narrow down to zero, even intersecting appear in the imaging point that pixel is formed.Therefore can make and form first optical image through first optical element and do not have gap between the imaging point, again first optical image is carried out optics through second optical element and amplify second optical image that forms the pixel image, because there has not been the gap between the imaging point in first optical image, so there is not the gap between the imaging point of second optical image after the optics amplification.Second optical image is imaged on display unit, and the image that this moment, display unit showed is the gap that does not have between the pixel.It will be more clear that people watch the display effect of second optical image, the glimmer that does not have the gap between the pixel to produce.Even closely watch also and can not produce grain effect.
Adopt technical method of the present invention, can also design a kind of novel projector equipment, adopt high brightness bulb or LED lamp to make back light, handle, will demonstration information project on the screen and show by optical treatment and electricity than existing projector equipment.The novel projector equipment of the present invention design is that the information that will show earlier is sent to the image display that matrix display such as LED lamp array constitute and demonstrates image, then this image is adopted first optics of the present invention that image is dwindled and eliminated first image in interlattice gap having on first image-forming block of scattering effect to form, adopt first image information after second optics of the present invention will be handled through first optical element and first image-forming block carry out after optics amplifies or dwindle then, form second optical image, on projection screen, show second optical image.This novel projector equipment comprises image display parts, first optical element, first image-forming block, second optical element, the projection screen that the lattice array as LED lamp array constitutes.Such projector equipment is simple in structure, and is cheap, and drop shadow effect still can be very clear, and can carry out the optics amplification or dwindle processing.When using reflection type screen, can be designed to when using rear projection screen, can be designed to based on novel rear-projection projector equipment of the present invention based on the novel preceding projector equipment of throwing of the present invention.
Equally, adopt technical scheme of the present invention, can also design the illuminator that multiple light courcess is become similar single light source.The illuminator of the present invention's design is earlier the output of multiple light courcess to be adopted first optics of the present invention to dwindle the gap of eliminating between light source to form the first illumination output, the first illumination output after adopting second optics of the present invention to handle through first optical element is then carried out after optics amplifies or dwindle, form the output of second illumination optical, because the gap between the light source is eliminated, therefore the output of second illumination optical similarly is single light source output.This novel illuminator comprises multiple light courcess parts, first optical element, second optical element as LED lamp array.Such lighting system structure is simple, and is cheap, can produce the single light source output effect, and can carry out the amplification of light source output shadow surface or dwindle processing.
2, further one of feature be when luminous point picture size hour, above-mentioned first optical element and second optical element can adopt single bull's-eye respectively.Usually the display screen appearance profile of image display is a rectangle, can be to be designed to the rectangle convex lens similar to the image display shape because of holding above-mentioned first optical element with second optical element.
3, two of feature be that the convex lens of above-mentioned rectangle are to obtain by the cutting bull's-eye further, make the optical signature of convex lens on any one lens axis of described rectangle identical.A kind of method is to make each bull's-eye to the optical property unanimity earlier, and it is the convex lens of rectangle that the outside of adopting cutting mode to remove bull's-eye then forms appearance profile.Another kind method is directly to adopt the convex lens of mould one-shot forming rectangle.
4, three of further feature is because the dot matrix of the advertisement display of LED lamp curtain wall, LED lamp formation etc. comprises both direction, gap between the pixel comprises horizontal direction and longitudinal direction, when picture size hour, a solution is the combination that above-mentioned first optical element comprises the convex lens of the convex lens of first cylindricality and second cylindricality, the lens axis normal of the lens axis of the convex lens of described first cylindricality and the convex lens of second cylindricality.Because the convex lens of cylindricality can make image dwindle in one direction, on another and last direction vertical direction, do not change, therefore need to adopt two orthogonal convex lens of lens axis dwindle processing for carrying out optics on the both direction of pattern matrix respectively.
5, four of further feature is convex lens that above-mentioned second optical element is a rectangle.
6, five of feature be that the convex lens of above-mentioned rectangle are to obtain by the cutting bull's-eye further, make the optical signature of convex lens on any one lens axis of described rectangle identical.
7, six of further feature is that above-mentioned second optical element comprises the convex lens of first cylindricality and the convex lens of second cylindricality, the lens axis normal of the lens axis of the convex lens of described first cylindricality and the convex lens of second cylindricality.The convex lens of described cylindricality present the optical characteristics of convex lens in one direction, with vertical another direction of this direction on be parallel optical surface/line.
8, seven of feature be that the optical axis of described first optical element overlaps with the optical axis of described second optical element further.
9, a kind of method that improves image display effect, second method is to comprise the steps:
The first step is divided at least two image-regions with image;
Second step, utilizing first optical element to carry out optics each image-region dwindles, the spacing of pixel is less than or equal to the size of pixel in the optical image in first optical image of each image-region that forms, and makes in first optical image very close to each other between the pixel;
In the 3rd step, utilize second optical element to carry out optics first optical image and amplify second optical image that forms each image-region;
In the 4th step, second optical image of each image-region is shown on image-forming block.
For bigger image display array,, can be a plurality of zones with the image display array partition, for each zone because the processing of large-area optical element is not easy
10, second optical image of described each image-region does not have separated region at second optical image of image that demonstrates on the image-forming block and adjacent image regions between the image that demonstrates on the image-forming block.
11, a kind of system that improves the LED image display effect, a kind of scheme comprise as lower member:
First optical element carries out optics with image and dwindles, in first optical image of the image that forms the spacing of pixel less than optical image in the size of pixel, make in first optical image very close to each other between the pixel;
Second optical element carries out first optical image second optical image of optics image formation magnification;
Image-forming block shows second optical image on image-forming block; Image-forming block can adopt the transmission-type projection screen, also can adopt the reflection-type projection screen.
The optics output of described first optical element is as the optics input of second optical element, and the optics output of described second optical element is as the optics input of image-forming block.
12, in this system, first aspect of described first optical element is the convex lens of rectangle.
13, in this system, the convex lens of described rectangle are to obtain by the cutting bull's-eye, make the optical signature of convex lens on any one lens axis of described rectangle identical.
14, in this system, second aspect of described first optical element is to comprise the convex lens of first cylindricality and the convex lens of second cylindricality, the lens axis normal of the lens axis of the convex lens of described first cylindricality and the convex lens of second cylindricality.
15, in this system, first aspect of described second optical element is the convex lens of rectangle.
16, in this system, the convex lens of described rectangle are to obtain by the cutting bull's-eye, make the optical signature of convex lens on any one lens axis of described rectangle identical.
17, in this system, second aspect of described second optical element is to comprise the convex lens of first cylindricality and the convex lens of second cylindricality, the lens axis normal of the lens axis of the convex lens of described first cylindricality and the convex lens of second cylindricality.
18, in this system, the optical axis of described first optical element overlaps with the optical axis of described second optical element.
19, a kind of second kind of scheme of system that improves image display effect is to comprise as lower member:
At least two first optical elements, an image-region of each first optical element correspondence image, image-region is carried out optics to be dwindled, in first optical image of the image-region that forms the spacing of pixel less than optical image in the size of pixel, make in first optical image very close to each other between the pixel;
At least two second optical elements carry out first optical image second optical image in optics image formation magnification zone;
Image-forming block shows second optical image of each image-region on the corresponding region of image-forming block;
The optics output of described first optical element is as the optics input of second optical element, and the optics output of described second optical element is as the optics input of image-forming block.
20, in this system, second optical image of described each image-region does not have separated region at second optical image of image that demonstrates on the image-forming block and adjacent image regions between the image that demonstrates on the image-forming block.
21, a kind of optical projection system, a kind of scheme are to comprise as lower member:
Lattice luminous display unit is as monochromatic LED array, multi-colored led array, organic light emission volume array, electroluminescent volume array etc.
First optical element, the dot matrix image that described lattice luminous display unit is shown carries out optics to be dwindled having and generates first optical image on first image-forming block of dispersion effect, the focal length by adjusting first optical element or the distance of the lattice luminous display unit and first optical element can best realization make the size of the spacing of pixel in first optical image of dot matrix image of formation less than pixel in the optical image, make in first optical image very close to each other between the pixel;
In the instantiation, first image-forming block can adopt the transmission-type projection screen, also can adopt the reflection-type projection screen.
Second optical element carries out optics with first optical image and amplifies second optical image that forms dot matrix image;
Second image-forming block shows second optical image on second image-forming block; Second image-forming block can adopt the transmission-type projection screen, also can adopt the reflection-type projection screen.
The optics output of described first image-forming block is as the optics input of second optical element, and the optics output of described second optical element is as the optics input of second image-forming block.
In the specific implementation, first image-forming block and second image-forming block have four kinds of combinations: first image-forming block is the reflection-type curtain, and second image-forming block is the reflection-type curtain; First image-forming block is the reflection-type curtain, and second image-forming block is the transmission-type curtain; First image-forming block is the transmission-type curtain, and second image-forming block is the reflection-type curtain; First image-forming block is the transmission-type curtain, and second image-forming block is the transmission-type curtain.Under the various combination state, the optical propagation path of system is different.When first image-forming block is the reflection-type curtain, block the angular field of view of second image-forming block for fear of first image-forming block, the display plane of lattice luminous display unit, first optics need form an acute angle angle with first image-forming block, miter angle preferably, make the main optical path angle of emergence and first image-forming block of first image-forming block form the acute angle angle, miter angle preferably can be the placement of can staggering of first image-forming block and second image-forming block.When first image-forming block was the transmission-type curtain, the optical axis of first image-forming block and second image-forming block and first optics, second optics can be parallel.
22, a kind of optical projection system, a kind of scheme are to comprise as lower member:
Lattice luminous display unit is as monochromatic LED array, multi-colored led array, organic light emission volume array, electroluminescent volume array etc.
At least two first optical elements, an image-region of each first optical element correspondence image, image-region is carried out optics to be dwindled and has on first image-forming block of dispersion effect first image of generation, the focal length by adjusting first optical element or the distance of the lattice luminous display unit and first optical element can best realization make the size of the spacing of pixel in first optical image of image-region of formation less than pixel in the optical image, make in first optical image very close to each other between the pixel;
In the instantiation, first image-forming block can adopt the transmission-type projection screen, also can adopt the reflection-type projection screen.
At least two second optical elements carry out first optical image second optical image in optics image formation magnification zone;
Second image-forming block shows second optical image of each image-region on the corresponding region of second image-forming block;
The optics output of described first image-forming block is as the optics input of second optical element, and the optics output of described second optical element is as the optics input of second image-forming block.
23, a kind of illuminator, a kind of scheme are to comprise as lower member:
Lattice luminous parts are as monochromatic LED array, multi-colored led array, organic light emission volume array, electroluminescent volume array etc.
First optical element, the light that described lattice luminous parts are sent carries out optics and converges in and generate first illumination optical on first image-forming block with dispersion effect, the focal length by adjusting first optical element or the distance of the lattice luminous display unit and first optical element can best realization make the size of the spacing of luminous point in first illumination optical of formation less than luminous point, make in first illumination optical very close to each other between the luminous point;
If according to application, when need regulating the illuminated area of illumination output or focusing surface, can further comprise second optical element, first illumination optical output carrying out optics is amplified or dwindles form the output of second illumination optical; The optics output of described first illumination optical is as the optics input of second optical element, and the optics output of described second optical element is as the output of second optical lighting system.
24, a kind of illuminator, a kind of scheme are to comprise as lower member:
Lattice luminous parts are as monochromatic LED array, multi-colored led array, organic light emission volume array, electroluminescent volume array etc.
At least two first optical elements, a source region of the corresponding lattice luminous parts of each first optical element, source region is carried out optics converge in generation first illumination optical on first image-forming block with dispersion effect, the focal length by adjusting first optical element or the distance of the lattice luminous display unit and first optical element can best realization make the size of the spacing of luminous point in first illumination optical of formation less than luminous point, make in first illumination optical very close to each other between the luminous point.
If according to application, when illuminated area that need regulate throws light on exports or focusing surface, can further comprise at least two second optical elements, first illumination optical is carried out second illumination optical output that optics amplifies the formation source region; The optics output of described first illumination optical is as the optics input of second optical element, and the optics output of described second optical element is as the output of illuminator.
Beneficial effect of the present invention: adopt technology of the present invention dot matrix image not to be had the sensation in dot matrix gap through the image of presenting to people after the optical treatment, thereby offer level and smooth image impression of observer, reach the purpose that improves image display effect, and then improve the quality of image.Technology of the present invention can also be used to design new projector equipment and illuminator simultaneously.This illuminator adopts lattice luminous light source, forms the single light source illuminating effect by optical treatment, has higher reliability, lower price.
Description of drawings:
Fig. 1 is that two luminous points with certain interval form the optics operation principle schematic diagram that has dwindled luminous point size and luminous point gap through convex lens.
To be two luminous points with certain interval through convex lens form Fig. 2 has dwindled the luminous point size and narrow down to zero optics operation principle schematic diagram with the time point gap.
To be two luminous points very close to each other form the luminous point that has amplified through convex lens to Fig. 3 keeps simultaneously and do not have the optics in luminous point gap operation principle schematic diagram.
Fig. 4 is that two luminous points with certain interval are through having eliminated the optics operation principle schematic diagram in luminous point gap behind the optical element.
Fig. 5 is that the first kind of system that improves LED dot matrix image display effect realizes schematic diagram.
Fig. 6 is that the second kind of system that improves LED dot matrix image display effect realizes schematic diagram.
Fig. 7 is the one-way cylindrical lens parts schematic perspective view that constitutes first optical element.
Fig. 8 is the one-way cylindrical lens perspective part-view schematic diagram that constitutes first optical element.
Fig. 9 is the convex lens group schematic diagram of first optical element, first cylindricality.
Figure 10 is the convex lens group schematic diagram of first optical element, second cylindricality.
Figure 11 adopts the system of the convex lens group design raising LED dot matrix image display effect of cylindricality to realize schematic diagram.
Figure 12 is the omni-directional circle rectangle convex lens parts schematic perspective view that constitutes first optical element.
Figure 13 is the omni-directional circle rectangle convex lens parts perspective view schematic diagram that constitutes first optical element.
Figure 14 is the convex lens group schematic diagram of the first optical element rectangle.
Figure 15 is that the system that adopts the design of omni-directional circle rectangle convex lens group to improve LED dot matrix image display effect realizes schematic diagram.
Figure 16 is that the third system that improves LED dot matrix image display effect realizes schematic diagram.
Figure 17 improves the LED array light source to realize that the system of illuminator realizes schematic diagram.
The specific embodiment:
Core point of the present invention is, when the pattern matrix in the luminous point gap that a plurality of luminous points or light source constitute, carrying out optics by optical element dwindles luminous point or light source is dwindled through the image optical surface size behind the optical element, with the gap between time point or the light source through the image luminous point behind the optical element or the gap between the light source is also proportional dwindles, when the gap between image luminous point or the light source is very little, with time point itself also be focused into brightness improve spot definition reduce the luminous point optical image, because such luminous point optical image is the diffusion effect during imaging on image-forming block with diffusion effect such as projection screen, gap between the luminous luminous point adjacent in the luminous point optical image is covered by the light of diffusion, and the gap of the optical image that is presented is eliminated.And then through optical element the luminous point optical image is carried out optics and amplifies, will in another image-forming block such as projection screen, present amplification very close to each other image luminous point optical image.When aforementioned optical magnification is identical with the optics minification, can realize to have the luminous point of optical gap or array of source through becoming very close to each other and of the luminous point or the array of source output of former dot pattern after the optical treatment as identical size.Can adjust the size of image luminous point optical image by regulating the optics amplification multiple.
Further describe specific embodiments of the present invention below in conjunction with accompanying drawing.
Fig. 1 is that two luminous points with certain interval form the optics operation principle schematic diagram that has dwindled luminous point size and luminous point gap through convex lens.First luminous point 101 and second luminous point 102 are at a distance of certain distance, the focus of first convex lens 103 is respectively F1 and F1 ', the axis of lens line parallel of first luminous point 101 and second luminous point, the 102 residing planes and first convex lens 103, and optical axial symmetry with respect to first convex lens 103, when the distance of first luminous point 101 and second luminous point 102 and first convex lens 103 during greater than first convex lens, 103 Focus lengths of twice, first imaging point 104 and second imaging point 105 of the light of first luminous point 101 and second luminous point 102 refraction by first convex lens 103 formation on the first imaging screen of the opposite side of first convex lens 103 luminous point dwindle than the size of first luminous point 101 and second luminous point 102 respectively, and the distance between first imaging point 104 and second imaging point 105 is dwindled than the distance of first luminous point 101 and second luminous point 102 simultaneously.By enlarging the distance of first luminous point 101 and second luminous point 102 and first convex lens 103, will the size of first imaging point 104 and second imaging point 105 further be dwindled, the distance between first imaging point 104 and second imaging point 105 is further dwindled simultaneously.When first imaging point 104 and second imaging point, 105 places are placed the projection screen (not drawing among the figure) with scattering effect, because there are diffusion effect in first imaging point 104 and second imaging point on projection screen, be that the luminous point image that luminous point forms on imaging surface to the periphery diffusion, makes the optical dimensions of first imaging point 104 and second imaging point enlarge because of diffusion effect owing to optical scattering.Distance between first imaging point 104 and second imaging point 105 is narrowed down to make between first imaging point 104 and second imaging point 105 behind the certain size and not have optical gap.Fig. 2 has provided the schematic diagram of this effect.First imaging point 204 of Xing Chenging and the optical gap between second imaging point 205 are zero as seen from Figure 2.When the distance of further expansion first luminous point 101 and second luminous point 102 and first convex lens 103, will the optical image between first imaging point 104 and second imaging point 105 be overlapped.
To be two luminous points very close to each other form the luminous point that has amplified through convex lens to Fig. 3 keeps simultaneously and do not have the optics in luminous point gap operation principle schematic diagram.Optical gap between first imaging point 204 and second imaging point 205 is zero, the focus of second convex lens 307 is respectively F2 and F2 ', the axis of lens line parallel of first imaging point 204 and second imaging point, the 205 residing planes and second convex lens 307, and optical axial symmetry with respect to second convex lens 307, when the distance of first imaging point 204 and second imaging point 205 and second convex lens 307 was between second convex lens, 307 Focus lengths of one times second convex lens, 307 focal length and twice, the light of first imaging point 204 and second imaging point 205 amplified than the size of first imaging point 204 and second imaging point 205 respectively through the refraction of second convex lens 307 forms luminous point on the second imaging screen of the opposite side of second convex lens 307 the 3rd imaging point 304 and the 4th imaging point 305.Because the optical gap between first imaging point 204 and second imaging point 205 is zero, the optical gap between the 3rd imaging point 304 and the 4th imaging point 305 is zero so.
Fig. 4 is the optics operation principle schematic diagram that two luminous points with certain interval have been eliminated the luminous point gap after through one group of optical element.Fig. 4 is actually Fig. 2 and Fig. 3 is merged realization.The light of first luminous point 101 and second luminous point 102 forms first imaging point 104 and second imaging point 105 of luminous point by the refraction of first convex lens 103 among the figure on the first imaging screen 406 with scattering effect of the opposite side of first convex lens 103, and wherein first imaging point 104 and second imaging point 105 do not draw.Form the 3rd imaging point 304 and the 4th imaging point 305 of luminous point again at the second imaging screen 408 of the opposite side of second convex lens 307 through the refraction of second convex lens 307.According to the optical principle of Fig. 4, can eliminate the luminous point gap.Such effect shows for the formation image based on multiple spot paroxysm light or provides the application of single light source very useful based on multiple spot paroxysm light.In the formation image demonstration for multiple spot paroxysm light, owing to the gap of having eliminated between the dot matrix, the image blurring phenomenon that its image will not have tangible sawtooth effect and dot matrix gap to cause in showing is improved image display effect.For the application that single light source is provided based on multiple spot paroxysm light, because the gap between the multiple spot battle array is eliminated just the same with single light source or the approaching single illuminating source of the multiple spot array light source that it provides.
Fig. 5 is that the first kind of system that improves LED dot matrix image display effect realizes schematic diagram.When solid luminescence diode (LED) dot matrix forms image, owing to making the solid luminescence diode (LED), because the restriction of technology and reliability, the illuminator of solid luminescence diode (LED) is littler than the actual size of solid luminescence diode (LED) element, after being welded on the circuit board according to the dot matrix requirement a plurality of solid luminescence diode (LED)s, when the solid luminescence diode (LED) was luminous, the gap between the dot matrix was tangible.This gap makes the LED dot matrix image tangible sawtooth effect occur and makes image blurring.In Fig. 5, LED dot matrix image 500 is to comprise a plurality of solid luminescence diode (LED)s, as solid luminescence diode among the figure 501,502 etc.Have the image that formation is dwindled on the first imaging screen 506 of scattering effect through first convex lens 503, but the interlattice gap of the image that dwindles is eliminated because of scattering of light.Through second convex lens 507, on the second imaging screen 508, form enlarged image again, and the interlattice gap of enlarged image is still very little or be zero.The first imaging screen 506 must be a rear projection screen in this example, and the second imaging screen 508 can be a rear projection screen, also can be reflection type screen, in using according to reality is to watch image or watch image to determine by screen reflection by the screen transmission.Obviously very close to each other between the imaging point 504 and 505 among the figure.Those skilled in the relevant art, be appreciated that fully, when the first imaging screen 506 is reflection type screens, still can realize the present invention, just second convex lens 507 and the second imaging screen 508 need be placed the same side of the first imaging screen, 506 incident raies, the reflection ray of accepting the first imaging screen 506 gets final product, and referring to Figure 16, the first imaging screen 1606 is reflection type screens.
When the LED dot matrix image is very big,, will improve owing to size makes producting process difficulty and cost too greatly if use single convex lens.Can adopt a plurality of little convex lens to combine realization.As Fig. 6, LED dot matrix image separated into two parts: first 600 and second portion 610.There are a plurality of solid luminescence diode (LED)s in first 600, as 601 among the figure and 602, on the first imaging screen 606, form the image in the no dot matrix gap that dwindles through convex lens 603, on the second imaging screen, form the image in the no dot matrix gap of process amplification then through convex lens 607, as just very close to each other between the imaging point among the figure 604 and 605; Second portion 610 has a plurality of solid luminescence diode (LED)s, as 611 among the figure and 612, on the first imaging screen 606, form the image in the no dot matrix gap that dwindles through convex lens 613, on the second imaging screen, form the image in the no dot matrix gap of process amplification then through convex lens 617, as just very close to each other between the imaging point among the figure 614 and 615.Position between suitable adjustment convex lens 603 and the convex lens 613 and the position between convex lens 607 and the convex lens 617, can make first 600 very close to each other between the image that forms on the second imaging screen 608, thereby realize that the large LED dot matrix image forms the display effect of large-scale no gap LED dot matrix image through technical method processing of the present invention at image that forms on the second imaging screen 608 and second portion 600.
But for the large LED dot matrix image, a plurality of convex lens are placed in same plane, in order not have the slit on the plane that convex lens are constituted, need the convex lens of design given shape.General convex lens all are identical round-shaped of all directions optical characteristics, but such shape is when laying in one plane, between the convex lens by the slit.Comparatively desired shapes is the convex lens of rectangle, because usually dot matrix image all is a rectangle, therefore adopts the rectangle convex lens to be spliced into the flat shape of dot matrix image easily and does not have the slit.Also can adopt the convex lens shape of equilateral hexagon to splice, but boundary need special process to handle.
The rectangle convex lens also have two kinds of forms, a kind of form is the column type convex lens, be that convex lens only have the characteristic of convex lens in one direction, example implementation 700 as Fig. 7, another kind of form is omni-directional circle rectangle convex lens, so-called omni-directional circle rectangle convex lens are meant that the optical characteristics on the same all directions with bull's-eye of convex lens is identical, but omni-directional circle rectangle convex lens profile is not circle but rectangle, the example implementation 1200 of seeing Figure 12.Fig. 8 has provided the three-view diagram of Fig. 7.Wherein Fig. 8 (B) is a front view 802, and Fig. 8 (A) is a right view 801, and Fig. 8 (C) is a left view 803, and Fig. 8 (D) is a vertical view 804.Because the column type convex lens only have the characteristic of convex lens in one direction, and all there is the dot matrix gap in dot matrix image plane normally on both direction.Therefore need two-layer convex lens group could realize the optical treatment of lattice plane.As Fig. 9 is a realization example 900 on the direction, and Figure 10 is the realization example 1000 on another direction vertical with the described direction of Fig. 9.Realization example 900 is to be made of a plurality of column type convex lens 700 with equidirectional.Realization example 1000 is to be had the column type convex lens 700 vertical with the described direction of Fig. 9 and constituted by a plurality of.
Figure 11 adopts the system of the convex lens group design raising LED dot matrix image display effect of cylindricality to realize schematic diagram.Led array 1101 is eliminated by the convex lens group 1102 of first cylindricality dot matrix gap that array is horizontal, by the convex lens group 1103 of second cylindricality array is eliminated in the dot matrix gap longitudinally then.By the convex lens group 1104 of the 3rd cylindricality the horizontal dot matrix image of array is amplified again, convex lens group 1105 by the 4th cylindricality is amplified the vertical dot matrix image of array, the final image that forms LED dot matrix image very close to each other on imaging screen 1106.Between the convex lens group 1103 of the convex lens group 1102 of first cylindricality and second cylindricality, a rear projection screen (not drawing) is arranged preferably, be positioned on the focal imaging plane of convex lens group 1102 of first cylindricality, between the convex lens group 1104 of the convex lens group 1103 of second cylindricality and the 3rd cylindricality, a rear projection screen (not drawing) is arranged preferably, be positioned on the focal imaging plane of convex lens group 1103 of second cylindricality, between the convex lens group 1105 of the convex lens group 1104 of the 3rd cylindricality and the 4th cylindricality, a rear projection screen (not drawing) is arranged preferably, be positioned on the focal imaging plane of convex lens group 1104 of the 3rd cylindricality.
Figure 13 has provided the three-view diagram of Figure 12.Wherein Figure 13 (B) is a Front view 1 302, and Figure 13 (A) is a right view 1301, and Figure 13 (C) is a left view 1303, and Figure 12 (D) is a vertical view 1304.Because omni-directional circle rectangle convex lens all have the optical characteristics of identical convex lens on each direction,, on both direction, all there is the dot matrix gap for dot matrix image plane normally.Therefore a plurality of omni-directional circle of individual layer rectangle convex lens constitute the optical treatment that the convex lens group can realize lattice plane.As Figure 14 is the realization example 1400 of convex lens group, is to be made of a plurality of omni-directional circle rectangle convex lens 1200.
In the concrete manufacture method of omni-directional circle rectangle convex lens 1200, a kind of method is to make the omni-directional bull's-eye, and interior quadrangle cutting or the polishing bull's-eye periphery according to circle forms the bull's-eye that the outside is shaped as rectangle then.Another kind method is directly to design the mould of omni-directional circle rectangle convex lens, pours the molten slurry of glass into die for molding then and makes the omni-directional bull's-eye.
Figure 15 is that the system that adopts the design of omni-directional circle rectangle convex lens group to improve LED dot matrix image display effect realizes schematic diagram.Led array 1501 is eliminated the dot matrix gap of array by first omni-directional circle rectangle convex lens group 1502.By second omni-directional circle rectangle convex lens group 1503 array dot matrix image is amplified the final image that forms LED dot matrix image very close to each other on imaging screen 1504 again.Between first omni-directional circle rectangle convex lens group 1502 and the second omni-directional circle rectangle convex lens group 1503, a rear projection screen (not drawing) is arranged preferably, be positioned on the focal imaging plane of first omni-directional circle rectangle convex lens group 1502.
Figure 17 improves the LED array light source to realize that the system of illuminator realizes schematic diagram.During solid luminescence diode (LED) array light source, owing to making the solid luminescence diode (LED), because the restriction of technology and reliability, the illuminator of solid luminescence diode (LED) is littler than the actual size of solid luminescence diode (LED) element, after being welded on the circuit board according to the dot matrix requirement a plurality of solid luminescence diode (LED)s, when the solid luminescence diode (LED) was luminous, the gap between the dot matrix was tangible.It is the multiple spot lighting source that this gap can obviously be felt the LED array light source.In Figure 17, LED array light source 1700 is to comprise a plurality of solid luminescence diode (LED)s, as solid luminescence diode among the figure 1701,1702 etc.Has the array light source that formation is dwindled on the first imaging screen 1706 of scattering effect through first convex lens 1703, but eliminate because of scattering of light in the interlattice gap of the image that dwindles, form multiple spot light source very close to each other, produce illuminating effect near single light source.According to application need, amplify through second convex lens, 1707 multiple spot light sources very close to each other again or dwindle, produce the lighting source of the shadow surface that needs.Second convex lens 1707 have been multiple spot light sources very close to each other just because form the array light source dwindle on the first imaging screen 1706 not necessarily, when regulating the illuminated area of lighting source or focusing surface if desired, increase by second convex lens 1707 and regulate.The first imaging screen 1706 must be a rear projection screen in this example, and in using according to reality being provides light source or provide light source to determine by screen reflection by the screen transmission.Those skilled in the relevant art are appreciated that fully working as the first imaging screen 1706 is reflection type screens, still can realize the present invention.
Claims (18)
1. illuminator is characterized in that comprising as lower member:
Lattice luminous display unit;
First optical element, the light that described lattice luminous display unit is sent carry out optics and converge in and generate first illumination optical on first image-forming block with dispersion effect; Make the spacing of luminous point in described first illumination optical of formation be less than or equal to the size of luminous point;
Described first optical element is the convex lens of rectangle, and the convex lens of described rectangle are by the acquisition of cutting bull's-eye or directly adopt the mould one-shot forming, make the optical signature of convex lens on any one lens axis of described rectangle identical;
The distance of described lattice luminous display unit and described first optical element is greater than the described first optical element Focus length of twice.
2. system according to claim 1 is characterized in that further comprising second optical element, and described second optical element amplifies first illumination optical output carrying out optics or dwindles formation second illumination optical and export;
Described second optical element is the convex lens of rectangle, and the convex lens of described rectangle are by the acquisition of cutting bull's-eye or directly adopt the mould one-shot forming, make the optical signature of convex lens on any one lens axis of described rectangle identical.
3. system according to claim 1 is characterized in that further comprising second optical element, and described second optical element amplifies first illumination optical output carrying out optics or dwindles formation second illumination optical and export;
Described second optical element comprises the convex lens of first cylindricality and the convex lens of second cylindricality, the lens axis normal of the lens axis of the convex lens of described first cylindricality and the convex lens of second cylindricality.
4. illuminator is characterized in that comprising as lower member:
Lattice luminous display unit;
First optical element, the light that described lattice luminous display unit is sent carry out optics and converge in and generate first illumination optical on first image-forming block with dispersion effect; Make the spacing of luminous point in described first illumination optical of formation be less than or equal to the size of luminous point;
Described first optical element comprises the convex lens of first cylindricality and the convex lens of second cylindricality, the lens axis normal of the lens axis of the convex lens of described first cylindricality and the convex lens of second cylindricality;
The distance of described lattice luminous display unit and described first optical element is greater than the described first optical element Focus length of twice.
5. system according to claim 4 is characterized in that further comprising second optical element, and described second optical element amplifies first illumination optical output carrying out optics or dwindles formation second illumination optical and export;
Described second optical element is the convex lens of rectangle, and the convex lens of described rectangle are by the acquisition of cutting bull's-eye or directly adopt the mould one-shot forming, make the optical signature of convex lens on any one lens axis of described rectangle identical;
6. system according to claim 4 is characterized in that further comprising second optical element, and described second optical element amplifies first illumination optical output carrying out optics or dwindles formation second illumination optical and export;
Described second optical element comprises the convex lens of first cylindricality and the convex lens of second cylindricality, the lens axis normal of the lens axis of the convex lens of described first cylindricality and the convex lens of second cylindricality.
7. according to each described system in the claim 1 to 6, it is characterized in that described lattice luminous display unit is as one of lower member: monochromatic LED array, multi-colored led array, organic light emission volume array, electroluminescent volume array.
8. according to each described system in the claim 1 to 6, it is characterized in that making the size of the spacing of luminous point in first illumination optical of formation less than luminous point, make in first illumination optical very close to each other between the luminous point.
9. according to each described system in the claim 1 to 6, it is characterized in that described first image-forming block adopts the transmission-type projection screen or adopts the reflection-type projection screen.
10. illuminator is characterized in that comprising as lower member:
Lattice luminous display unit;
At least two first optical elements, a source region of the corresponding lattice luminous display unit of each first optical element carries out optics with source region and converges in generation first illumination optical on first image-forming block with dispersion effect; Make the spacing of luminous point in described first illumination optical of formation be less than or equal to the size of luminous point;
Described first optical element is the convex lens of rectangle, and the convex lens of described rectangle are by the acquisition of cutting bull's-eye or directly adopt the mould one-shot forming, make the optical signature of convex lens on any one lens axis of described rectangle identical;
The distance of described lattice luminous display unit and described first optical element is greater than the described first optical element Focus length of twice.
11. system according to claim 10 is characterized in that further comprising second optical element, described second optical element amplifies first illumination optical output carrying out optics or dwindles formation second illumination optical and export;
Described second optical element is the convex lens of rectangle, and the convex lens of described rectangle are by the acquisition of cutting bull's-eye or directly adopt the mould one-shot forming, make the optical signature of convex lens on any one lens axis of described rectangle identical.
12. system according to claim 10 is characterized in that further comprising second optical element, described second optical element amplifies first illumination optical output carrying out optics or dwindles formation second illumination optical and export;
Described second optical element comprises the convex lens of first cylindricality and the convex lens of second cylindricality, the lens axis normal of the lens axis of the convex lens of described first cylindricality and the convex lens of second cylindricality.
13. an illuminator is characterized in that comprising as lower member:
Lattice luminous display unit;
At least two first optical elements, a source region of the corresponding lattice luminous display unit of each first optical element carries out optics with source region and converges in generation first illumination optical on first image-forming block with dispersion effect; Make the spacing of luminous point in described first illumination optical of formation be less than or equal to the size of luminous point;
Described first optical element comprises the convex lens of first cylindricality and the convex lens of second cylindricality, the lens axis normal of the lens axis of the convex lens of described first cylindricality and the convex lens of second cylindricality;
The distance of described lattice luminous display unit and described first optical element is greater than the described first optical element Focus length of twice.
14. system according to claim 13 is characterized in that further comprising second optical element, described second optical element amplifies first illumination optical output carrying out optics or dwindles formation second illumination optical and export;
Described second optical element is the convex lens of rectangle, and the convex lens of described rectangle are by the acquisition of cutting bull's-eye or directly adopt the mould one-shot forming, make the optical signature of convex lens on any one lens axis of described rectangle identical;
15. system according to claim 13 is characterized in that further comprising second optical element, described second optical element amplifies first illumination optical output carrying out optics or dwindles formation second illumination optical and export;
Described second optical element comprises the convex lens of first cylindricality and the convex lens of second cylindricality, the lens axis normal of the lens axis of the convex lens of described first cylindricality and the convex lens of second cylindricality.
16., it is characterized in that described lattice luminous display unit is as one of lower member: monochromatic LED array, multi-colored led array, organic light emission volume array, electroluminescent volume array according to each described system in the claim 10 to 15.
17. according to each described system in the claim 10 to 15, it is characterized in that making the size of the spacing of luminous point in first illumination optical of formation, make in first illumination optical very close to each other between the luminous point less than luminous point.
18., it is characterized in that described first image-forming block adopts the transmission-type projection screen or adopts the reflection-type projection screen according to each described system in the claim 10 to 15.
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| US9291806B2 (en) * | 2012-06-21 | 2016-03-22 | Qualcomm Mems Technologies, Inc. | Beam pattern projector with modulating array of light sources |
| CN106443985A (en) * | 2015-08-07 | 2017-02-22 | 高准精密工业股份有限公司 | Method of scaling a structured light pattern and optical device using same |
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