CN1732403A - Illuminating device and porjection type image display unit - Google Patents
Illuminating device and porjection type image display unit Download PDFInfo
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- CN1732403A CN1732403A CN 200380107728 CN200380107728A CN1732403A CN 1732403 A CN1732403 A CN 1732403A CN 200380107728 CN200380107728 CN 200380107728 CN 200380107728 A CN200380107728 A CN 200380107728A CN 1732403 A CN1732403 A CN 1732403A
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Abstract
An illuminating device (1) comprising a light source (12) consisting of LED chips (11) disposed in a array form and lens cells (14) each disposed on the light outgoing side of each LED chip (11), and a fly-eye lens pair (13) for integrating and guiding rays of light output from respective LED chips (11) and made parallel by the lens cells (14) to a liquid crystal display panel (3). The LED chips (11) and the lens cells (14) are formed in square shapes that match the aspect ratio of the liquid crystal display panel (3). The lens cells (14) are separated from each other and have a wall surface (air gap) that works as a reflection surface.
Description
Technical field
The present invention relates to a kind of lighting device and projection type video display device.
Background technology
Employed lighting device in the liquid crystal projection apparatus etc. generally is by lamps such as extra-high-pressure mercury vapour lamp, metal-halide lamp, xenon lamps, and the device that the parabolic mirror of this irradiates light parallelization is constituted.In addition, in the above-mentioned lighting device, in order to alleviate shadow surface light quantity inequality, have by the resulting integrating function of a pair of fly's-eye lens (will by planar sample a plurality of field of illuminations of formed given shape of optical device, the function of overlapping optically focused on the lighting object thing).In addition, from viewpoints such as light weight miniaturizations, also the someone has attempted use light emitting diode (LED) as light source (opening flat 10-186507 number with reference to the spy) in recent years.
But actual conditions are to use light emitting diode also can't obtain practical lighting device.
In addition, someone considers and uses semiconductor laser (LD) to replace light emitting diode, but under the situation of a plurality of semiconductor lasers (LD) that use out the long light of ejaculation same wave, existence because of the consistent speckle noise that produces of its phase place (by the so very strong Gao Guang of interference of laser, shine coarse uneven medium, when observing this scattered light, the mottled state that the contrast that is produced in the space of being found is high.Shadow surface appears to have flash of light) this weak point.
In addition, under the situation of using semiconductor laser (LD), also exist its beam profile for oval, the luminous intensity distribution becomes weak points such as Gaussian distribution in addition.
Summary of the invention
The present invention is in order to address the above problem, and purpose is to provide a kind of lighting device of the practicality of using solid-state light emitting elements such as light emitting diode and the projection type video display device that uses this lighting device.
Lighting device of the present invention in order to address the above problem, is characterised in that, possesses: solid-state light emitting element is arranged to the light source of array-like, and the light integration of each solid-state light emitting element institute outgoing is imported integrating mechanism to the lighting object thing.
By adopting above-mentioned formation, owing to be the light source that solid-state light emitting element is configured to array-like, therefore can realize the increase of light quantity, simultaneously, because the light integration of each solid-state light emitting element institute outgoing is imported to the lighting object thing, therefore, can prevent to occur on the lighting object thing light and shade of array-like.
The light exit side of above-mentioned solid-state light emitting element can be provided with lens unit.By the said lens unit is set, can suppresses the dispersing of light of solid-state light emitting element institute outgoing, and import and give integrating mechanism.In addition, can allow said lens unit and each solid-state light emitting element one-body molded, or form respectively with above-mentioned moulding resin by moulding resin, and and this moulding resin between be separated with resin bed.In addition, can allow the said lens unit have the wall of sowing discord mutually, and above-mentioned wall form reflecting surface.Like this,, can prevent that the light of solid-state light emitting element institute outgoing is directed in the adjacent lenses unit by the above-mentioned wall that becomes reflecting surface, simultaneously, can be from the lens unit of self side this light that is reflected of outgoing, improved the light utilization ratio.In addition, can be provided with reflecting body between the above-mentioned place of sowing discord.By like this, can further improve the light utilization ratio.
Can allow above-mentioned integrating mechanism by the 1st lens combination that is subjected to light and optically focused, and the 2nd lens combination formation that is arranged on the focal point place, the said lens unit also can constitute according to the mode that will import to above-mentioned the 1st lens combination from the light of solid-state light emitting element.The said lens unit can with above-mentioned the 1st lens combination driving fit together.By this driving fit, can eliminate undesirable reflection of light, improve the light utilization ratio.
Can allow the said lens unit constitute according to the mode of the light from solid-state light emitting element being carried out optically focused, above-mentioned integrating mechanism possesses the lens combination of the focal point that is arranged on the light after passing through from the said lens unit.By like this, do not need to be equivalent to the optics of above-mentioned the 1st lens combination, thereby can cut down part count.
Each solid-state light emitting element can be corresponding one by one with each lens of each lens unit and lens combination.Can the polarisation converting means that be made of polarisation bundle shunt be set at the light exit side of above-mentioned integrating mechanism.Possess the formation of above-mentioned polarization conversion element by employing,, can realize effectively applying flexibly of light, help to obtain practical lighting device using under the situation of display panels as the lighting object thing.Particularly,, therefore, solid-state light emitting element is being arranged in the light source of array-like, can be being accessed high light utilization ratio because above-mentioned polarisation converting means is made of polarisation bundle shunt array.
Can allow each lens of the lens combination in the above-mentioned integrating mechanism, consistent or roughly consistent with the aspect ratio of lighting object thing.In addition, can allow the said lens unit consistent or roughly consistent with the aspect ratio of lighting object thing.In addition, can allow the aspect ratio of each solid-state light emitting element consistent or roughly consistent with the aspect ratio of lighting object thing.In addition, also can possess anamorphose lens, and it is different with the aspect ratio of lighting object thing to import to the aspect ratio of the light beam in this anamorphose lens, the aspect ratio of the light beam of institute's outgoing is consistent or roughly consistent with the aspect ratio of lighting object thing from anamorphose lens.Constitute by this, the light of solid-state light emitting element institute outgoing can not imported on the whole surface of lighting object thing lavishly, improved the utilization ratio of emergent light.
Above-mentioned integrating mechanism can be the mechanism that is made of the bar integrator.Can allow the light-emitting face of above-mentioned bar integrator consistent or roughly consistent with the aspect ratio of lighting object thing.In addition, can be provided with anamorphose lens in the light-emitting face side of above-mentioned bar integrator, and the aspect ratio of the light-emitting face of above-mentioned bar integrator is different with the aspect ratio of lighting object thing, and the aspect ratio of the light beam of institute's outgoing is consistent or roughly consistent with the aspect ratio of lighting object thing from anamorphose lens.
In addition, lighting device of the present invention is characterised in that, possessing a plurality of semiconductor lasers as solid-state light emitting element arranges and the light source of formation, the light integration of above-mentioned semiconductor laser institute outgoing is imported integrating mechanism to the lighting object thing, and allow the mutual inhomogenous phase shift of the phase place of light of above-mentioned semiconductor laser institute outgoing mechanism.By adopting above-mentioned formation, owing to be the light source that disposes a plurality of solid-state light emitting elements, therefore can realize the increase of light quantity, simultaneously, because each semiconductor laser institute emitting laser integration is imported to the lighting object thing, therefore, can prevent that appearance is corresponding to the light and shade of semiconductor laser configurations on the lighting object thing.In addition, allow the mutual inhomogenous phase shift of the phase place of semiconductor laser institute emitting laser mechanism, therefore can reduce speckle noise owing to have.
Phase shift mechanism can be by being arranged on the light path of the light of each semiconductor laser institute outgoing, and thickness different a plurality of dull and stereotyped hyalomeres mutually constitutes.Phase shift mechanism also can be by being arranged on the light path of the light of each semiconductor laser institute outgoing, and specific inductive capacity different a plurality of dull and stereotyped hyalomeres mutually constitutes.Phase shift mechanism also can be arranged on the wedge-shaped optical element on the light path of described semiconductor laser institute emitting laser.
In addition, lighting device of the present invention is characterised in that, have: a plurality of semiconductor lasers as solid-state light emitting element are arranged the light source that forms, and above-mentioned semiconductor laser institute emitting laser integration imported integrating mechanism to the lighting object thing, and allow the light diffusion mechanism of above-mentioned semiconductor laser institute emitting laser diffusion.By adopting above-mentioned formation, owing to be the light source that disposes a plurality of semiconductor lasers, therefore can realize the increase of light quantity, simultaneously, because each semiconductor laser institute emitting laser integration is imported to the lighting object thing, therefore, can prevent that appearance is corresponding to the light and shade of semiconductor laser configurations on the lighting object thing.In addition, owing to possess the light diffusion mechanism that allows semiconductor laser institute emitting laser spread, therefore can reduce speckle noise.The light diffusion mechanism can be to have small concavo-convex optical element.
In addition, lighting device of the present invention is characterised in that, have: a plurality of solid-state light emitting elements are arranged the light source that forms, and the light that receives each solid-state light emitting element institute outgoing, and with the many places light of its light area respectively integration import integrating mechanism to the lighting object thing.By adopting above-mentioned formation, owing to be the light source that disposes a plurality of solid-state light emitting elements, therefore can realize the increase of light quantity, simultaneously, because the light integration of each solid-state light emitting element institute outgoing is imported to the lighting object thing, therefore, can prevent that appearance is corresponding to the light and shade of semiconductor laser configurations on the lighting object thing.Even exist luminous intensity to distribute in the solid-state light emitting element, but owing to receive the light of each solid-state light emitting element institute outgoing, and with the many places light of this light area respectively integration import to the lighting object thing, therefore, that has carried out that luminous intensity distributes is decentralized, can allow everywhere brightness equalization on the lighting object thing.
In addition, lighting device of the present invention is characterised in that to possess: distribute mutually different solid-state light emitting element of a plurality of luminous intensities is arranged the light source that forms, and the light integration of each solid-state light emitting element institute outgoing is imported integrating mechanism to the lighting object thing.In the above-mentioned formation, can realize that also light quantity increases, can also prevent to produce on the lighting object thing the corresponding light and shade of configuration simultaneously with solid-state light emitting element.In addition, owing to the mutually different solid-state light emitting element arrangement that distributed by a plurality of luminous intensities forms, therefore can realize the equalization of the brightness everywhere on the lighting object thing.In the above-mentioned formation, can mix being provided with 2 luminous solid-state light emitting elements that light emitting diode constituted, the solid-state light emitting element that is constituted with semiconductor laser.
In addition, lighting device of the present invention is characterised in that, possess: a plurality of solid-state light emitting elements are arranged the light source that forms, and the light that receives each solid-state light emitting element institute outgoing, the intensity distributions mapping device of its intensity distributions of conversion and outgoing, and the light integration of each intensity distributions mapping device institute outgoing imported integrating mechanism to the lighting object thing.In the above-mentioned formation, can realize that also light quantity increases, can also prevent to produce on the lighting object thing the corresponding light and shade of configuration simultaneously with solid-state light emitting element.In addition, owing to possess the light that receives each solid-state light emitting element institute outgoing, therefore the intensity distributions mapping device of its intensity distributions of conversion and outgoing can realize the equalization of the brightness everywhere on the lighting object thing.
In addition, lighting device of the present invention is characterised in that to possess: a plurality of solid-state light emitting elements are arranged the light source that forms, and with the light of each solid-state light emitting element institute outgoing with mutually different light converging pattern, integration imports the integrating mechanism to the lighting object thing.In the above-mentioned formation, can realize that also light quantity increases, can also prevent from simultaneously to produce with solid-state light emitting element on the lighting object thing and dispose corresponding light and shade.In addition since with the light of each solid-state light emitting element institute outgoing with mutually different light converging pattern, integration imports to the lighting object thing, therefore can realize the equalization of the brightness everywhere on the lighting object thing.
Can allow in the lighting device of above-mentioned formation, possess semiconductor laser, as display panels, can make the linear polarization direction of semiconductor laser corresponding the lighting object thing with the polarization direction of display panels as solid-state light emitting element.
In addition, can allow in the lighting device of above-mentioned formation, possess semiconductor laser, make its luminous oval long side direction consistent with the long side direction of lighting object thing or roughly consistent as described solid-state light emitting element.
In addition, can allow in the lighting device of above-mentioned formation, has semiconductor laser as described solid-state light emitting element, to import aspect ratio from the light of this semiconductor laser to the optical element in the optical system of above-mentioned lighting object thing, consistent or roughly consistent with the aspect ratio of above-mentioned lighting object thing, simultaneously, the luminous oval long side direction of above-mentioned semiconductor laser is corresponding with the long side direction of above-mentioned optical element.
In addition, lighting device of the present invention is characterised in that, by inciting somebody to action one side as light-emitting face, the inboard of another side is provided with a plurality of solid-state light emitting elements as three-dimensional in the minute surface cylindrical body of reflecting surface, and the light integration of above-mentioned solid-state light emitting element institute outgoing is imported to above-mentioned light-emitting face, constitute from above-mentioned light-emitting face outgoing.By above-mentioned formation, because three-dimensional is provided with a plurality of solid-state light emitting elements, therefore can realize the increase of light quantity, simultaneously, because the light of each solid-state light emitting element institute outgoing is in the internal reflection of minute surface cylindrical body, and be integrated, and from the light-emitting face outgoing, therefore can prevent to produce on the lighting object thing the corresponding light and shade of configuration with solid-state light emitting element.Described minute surface cylindrical body can form the square tube body.Can allow the aspect ratio of above-mentioned light-emitting face consistent or roughly consistent with the aspect ratio of lighting object thing.By like this, the light of solid-state light emitting element institute outgoing can not imported on the whole surface of lighting object thing lavishly, improved the utilization ratio of emergent light.Can also allow the above-mentioned minute surface cylindrical body be taper, the area of above-mentioned light-emitting face is bigger than the area of the face of facing mutually with above-mentioned light-emitting face.By like this, can suppress dispersing of light, allow the rayed that is generated on the lighting object thing as far as possible.
In addition, lighting device of the present invention is characterised in that light exit side being provided with of solid-state light emitting element has the diffraction optical element portion of parallelization function or light-focusing function.In addition, lighting device of the present invention is characterised in that light exit side being provided with of solid-state light emitting element has the hologram optical element portion of parallelization function or light-focusing function.By above-mentioned formation, allow and also can effectively utilize the light that is directed to the outer somewhere of axle in the common lens, help to obtain the lighting device of practicality.
In addition, lighting device of the present invention is characterised in that two dimension or three-dimensional are provided with a plurality of solid-state light emitting elements, and the light exit side of each solid-state light emitting element is provided with polarization conversion element simultaneously.By like this, using under the situation of display panels as the lighting object thing, can realize effectively applying flexibly of light, help to obtain practical lighting device.
In addition, projection type video display device of the present invention is characterised in that to have above-mentioned each described lighting device.
Description of drawings
Fig. 1 is the figure of the optical system of the projection type video display device of expression embodiments of the present invention.
Fig. 2 is the front view of expression display panels.
The figure of Fig. 3 the has been local enlargement display lighting device shown in Fig. 1 (a) is planimetric map, (b) is that C-C is to pseudosection.
Fig. 4 (a) is front view for amplifying the part of another lighting device of representing embodiment of the present invention, (b) is that C-C is to pseudosection.
Fig. 5 is the key diagram of the effect of the lighting device shown in the presentation graphs 1.
Fig. 6 is the key diagram of the effect of the lighting device of expression another embodiment of the invention.
Fig. 7 is the key diagram of the effect of the lighting device of expression another embodiment of the invention.
Fig. 8 is the key diagram of the effect of the lighting device of expression another embodiment of the invention.
Fig. 9 is the key diagram of the optical system of the projection type video display device of expression embodiments of the present invention.
Figure 10 is the key diagram of integral action of the lighting device of presentation graphs 9.
Figure 11 (a) is the side view of phase shift plate, (b) is front view.
Figure 12 (a) is the side view of phase shift plate, (b) is front view.
Figure 13 is the key diagram of the effect of the lighting device of expression another embodiment of the invention.
Figure 14 is the key diagram of the optical system of the projection type video display device of expression embodiments of the present invention.
Figure 15 is the key diagram of the integral action of the lighting device of expression Figure 14.
Figure 16 is the key diagram of the effect of the lighting device of expression another embodiment of the invention.
Figure 17 is the key diagram of the effect of the lighting device of expression another embodiment of the invention.
Figure 18 is the LD chip in the lighting device of Figure 17 and the synoptic diagram of led chip.
Figure 19 is the key diagram of the effect of the lighting device of expression another embodiment of the invention.
Figure 20 is the key diagram of the effect of the lighting device of expression another embodiment of the invention.
Figure 21 (a) and (b) are the key diagram of employed intensity distributions conversion prism in the lighting device of expression Figure 20.
Figure 22 is the key diagram of the optical system of the projection type video display device of expression embodiments of the present invention.
Figure 23 is for amplifying the key diagram of the lighting device of representing embodiments of the present invention.
Figure 24 is the key diagram of the effect of the lighting device of expression another embodiment of the invention.
Figure 25 is the key diagram of the effect of the lighting device of expression another embodiment of the invention.
Figure 26 is the figure of expression another embodiment of the invention, is the key diagram of the relation between the arrangement of expression long side direction of light-emitting component and polarisation bundle shunt.
Embodiment
(embodiment 1)
Contrast Fig. 1 to Fig. 8 and Figure 26 below describes the lighting device and the projection type video display device of embodiments of the invention.
Fig. 1 is the figure that has shown the optical system of 3 board-like projection type video display devices.This projection type video display device possesses 3 lighting device 1R, 1G, 1B (following when not refering in particular to each lighting device, as to use symbol " 1 ").Lighting device 1R outgoing red light, lighting device 1G outgoing green light, lighting device 1B outgoing blue light.The light of 1 outgoing of each lighting device is imported to the permeation type liquid crystal display panel 3R of usefulness of all kinds by convex lens 2, among 3G, the 3B (following when not refering in particular to each display panels, as to use symbol " 3 ").Each display panels 3 possesses the light incident side Polarizer, encloses formed panel part of liquid crystal and exiting side Polarizer between a pair of glass substrate (being formed with pixel electrode and alignment films).As the permeation type liquid crystal display panel, it is known in each pixel portion microlens being set, but in the present embodiment, uses the display panels that does not have microlens.Use in the formation of lighting device 1 (pointolite), adopt the display panels side that does not have microlens, can improve the light utilization ratio.By from display panels 3R, 3G, 3B through and modulated light modulated (image light of all kinds) is synthesized by dichroic prism 4, form coloured image light.This coloured image light is amplified projection by projection lens 5, and Projection Display is on screen.
Fig. 2 is the front view of expression display panels 3.Display panels 3 has the aspect ratio of horizontal A to vertical B.A for example is 4 to 3 or 16 to 9 than B.
Can fly's-eye lens to 13 and collector lens 2 between the polarisation converting means is set.As shown in figure 26, polarisation converting means 20 is arranged the polarisation bundle shunt array that forms (below be called the PBS array) by a plurality of polarisation bundle shunt 20a and is constituted.The PBS array possesses polarisation diffusion barrier and polarizer (1/2 λ plate).Each polarisation diffusion barrier of PBS array allows and from fly's-eye lens for example P polarisation in 13 the light is passed through, and the S polarisation is carried out 90 ° of light path changes.S polarisation after the light path change reflected by adjacent polarisation diffusion barrier, thereby the former state outgoing is gone out.In addition, see through the P polarisation of polarisation diffusion barrier, be set at the above-mentioned polarizer of its front side (light exit side), be transformed into S polarisation and outgoing.Promptly in this embodiment, nearly all light all is transformed to the S polarisation.Above-mentioned polarisation bundle shunt 20a has elongated quadrangular shape.In the present embodiment, make the long side direction (long side direction of lens unit 14, lens combination 13a, 13b) of led chip 11 consistent with the long side direction of above-mentioned polarisation bundle shunt 20a.Also promptly, above-mentioned polarisation bundle shunt 18a is arranged in the short side direction of led chip 11, by like this, has improved the utilization ratio of light.
Fig. 3 is for amplifying the figure of the part shown light source 12, and figure (a) be a planimetric map, and figure (b) is for scheming C-C in (a) to pseudosection.Led chip 11 ... by the transparent resin moulding, constitute said lens unit 14 by forming convex at this transparent resin ...Led chip 11 and lens unit 14, shown in Fig. 3 (a), form square, and or roughly unanimity consistent with the aspect ratio of display panels 3.By like this, the light from 11 outgoing of led chip can not imported on the whole surface of display panels 3 lavishly, improved the utilization ratio of emergent light.
In addition, lens unit 14 shown in Fig. 3 (b), has the wall (air gap 15) of sowing discord mutually, and above-mentioned wall becomes reflecting surface.By the above-mentioned wall that becomes reflecting surface, can prevent that the light of 11 outgoing of led chip is directed in the adjacent lenses unit 14, simultaneously, can from lens unit 14 outgoing of self side should reflection light, improved the light utilization ratio.
Be illustrated in the formation that reflecting body 16 is set corresponding to above-mentioned air gap 15 places among Fig. 4.By like this reflecting body 16 being clipped in the middle, can further improve the light utilization ratio.Reflecting body 16 can be provided with in the resin forming stage, also can be inserted into after resin forming in the above-mentioned air gap 15.Reflecting body 16 can adopt the sheet metal (paper tinsel) with high reflectance.
The variation of expression lighting device 1 among Fig. 6.Lens unit 14 ' shown in this Fig. 6 is designed to the light from led chip 11 not carried out parallelization, and imports to the center of each lens of lens combination 13b.According to this formation, do not need lens combination 13a, thereby can cut down part count.
The lighting device 1 of bar integrator as integrating mechanism used in expression among Fig. 7 and Fig. 8.In the formation shown in Figure 7, bar integrator 18, its light-emitting face 18b side is bigger than light entrance face 18a, and light entrance face 18a is consistent or roughly consistent with the aspect ratio of display panels 3, and light-emitting face 18b and display panels 3 sizes are roughly the same.The light of led chip 11 is imported to by collector lens 17 among the light entrance face 18a of bar integrator 18 by lens unit 14 parallelizations.Inciding light among the light entrance face 18a of bar integrator 18 is integrated and shines on the display panels 3.Bar integrator 19 shown in Fig. 8, its light entrance face 19a is identical with light-emitting face 19b size, and display panels 3 is also almost big or small identical with light source 12.In addition, though do not form lens unit 14 among Fig. 8 in the light source 12, form lens unit 14 and also be fine certainly.
In addition, in the above explanation, lens unit 14 is integrally formed in light source 12 by moulding resin, but the present invention is not limited to this, also can make lens unit by resin different with moulding resin or glass.In this case, can not form the space between lens unit and the moulding resin (the protection resin of led chip 11), and transparent resin layer is clipped in the middle.The refractive index of above-mentioned transparent resin layer can be consistent with the refractive index of lens unit or moulding resin or approximate.Such formation also can be applicable among other embodiment that have corresponding to the lens unit of led chip 11.
In addition, the LED lamp that the moulding of each made can be finished is arranged in array-like, as light source.In the above-mentioned formation, the profile of the LED lamp that moulding is finished and the profile of element portion both can be consistent with the shape (aspect ratio) of display panels 3 or roughly consistent, again can be with side wall portion as reflecting surface.
In addition, in the projection type video display device, be not limited in the permeation type liquid crystal display panel, also can use the reflective liquid crystal display panel, can also use the such display panel that drives respectively as the small reflector of pixel, replace above-mentioned display panels.In addition, possess 3 lighting device 1R, 1G, the 1B of each coloured light of outgoing in the present embodiment, but also can be used as the lighting device of outgoing white light, carry out beam split or not beam split, import in the color display panel of veneer by dichronic mirror etc.Under situation as the lighting device of outgoing white light, both can be each solid-state light emitting element outgoing white light, can be again the formation of suitably arranging the solid-state light emitting element of outgoing red light, blue light and green light.In addition, solid-state light emitting element is not limited in light emitting diode (LED).
But, import to shape as the light beam in the display panels 3 of lighting object thing, be subjected to the influence of the aspect ratio of beam shape correlating factor (each lens of solid-state light emitting element, lens unit, fly's-eye lens, the section of bar integrator).In the above-mentioned example, the aspect ratio of lighting object thing is 4: 3, and the aspect ratio of beam shape correlating factor also is 4: 3, but is not limited in this.For example, the aspect ratio of above-mentioned beam shape correlating factor was made as 4: 4, aspect ratio with the lighting object thing is different like this, change the light beam of (optically focused that carries out certain degree under the above-mentioned situation in vertical direction) this 4: 4 aspect ratios by anamorphose lens, make the aspect ratio of light beam in the stage that imports to the lighting object thing, consistent or roughly consistent with the aspect ratio (for example 4: 3) of this lighting object thing.Among such formation also goes for possessing the beam shape correlating factor other embodiment of (each lens of solid-state light emitting element, lens unit, fly's-eye lens, bar integrator).
(embodiment 2)
Contrast Fig. 9 to Figure 13 describes the lighting device and the projection type video display device of embodiments of the invention 2 below.
Fig. 9 is the figure of the optical system of expression 3 board-like projection type video display devices.This projection type video display device possesses 3 lighting device 101R, 101G, 101B (following when not refering in particular to each lighting device, as to use symbol " 101 ").Lighting device 101R outgoing red light, lighting device 101G outgoing green light, lighting device 101B outgoing blue light.The light of 101 outgoing of each lighting device is imported to of all kinds with (following when not refering in particular to each display panels, as to use symbol " 103 ") among display panels 103R, 103G, the 103B by collector lens 102.Each display panels 103 possesses the light incident side Polarizer, encloses formed panel part of liquid crystal and exiting side Polarizer between a pair of glass substrate (being formed with pixel electrode and alignment films).By from display panels 103R, 103G, 103B through and modulated light modulated (image light of all kinds) is synthesized by dichroic prism 104, form coloured image light.This coloured image light is exaggerated projection by projection lens 105, and Projection Display is on screen.
Fly's-eye lens as shown in figure 10, is made of a pair of lens combination 113a, 113b 113, and each lens import to the whole surface of display panels 103 to the light with 111 outgoing of each LD chip.Also promptly, because with each LD111 chip institute emitting laser, integration imports to display panels 103, therefore, can prevent from the light and shade of array-like to occur at (on the image of screen) on the display panels 103.
Can fly's-eye lens to 113 and collector lens 102 between phase shift plate 115 is set.Phase shift plate 115 is made of the mutual different a plurality of dull and stereotyped hyalomere of the thickness on the laser optical path that is arranged on each LD chip 111 shown in Figure 11 (a) and (b).Two faces of each dull and stereotyped hyalomere are perpendicular to optical axis.When light sees through from dull and stereotyped hyalomere, the distance of light (optical range (n * d:n is a refractive index, and d is a medium the thickness)) variation that is directly proportional with its refractive index.Because the thickness difference of each dull and stereotyped hyalomere, so the distance of light (optical range) is also different, and therefore, the phase place of laser that sees through each dull and stereotyped hyalomere is also different.By like this, each laser of 111 outgoing of LD chip has different phase places, overlaps the phase place from each LD chip 111 on the display panels 103 heterogeneity that becomes, thereby can reduce speckle noise.
In addition, in the above-mentioned configuration example, phase shift plate 115 be arranged on fly's-eye lens to 113 and collector lens 102 between, but be not limited in this, can also be arranged on from LD chip 111 to display panels arbitrary 103.
Figure 12 represents phase shift plate 116.This phase shift plate 116 is made of the identical a plurality of dull and stereotyped hyalomere of thickness (a plurality of dull and stereotyped transparent region) shown in this figure (a).Each dull and stereotyped hyalomere (each dull and stereotyped transparent region) is arranged on the light path of 111 emitting lasers of each LD chip.The thickness of each dull and stereotyped hyalomere is identical, but shown in Figure 12 (b), its refractive index (refractive index is corresponding to specific inductive capacity) n as n0, n1, n2 ... like this, different.When laser sees through dull and stereotyped hyalomere, the distance of light (optical range) variation that is directly proportional with its refractive index, therefore, through the phase place difference of the laser of each dull and stereotyped hyalomere.By like this, the phase place in himself light of 111 emitting lasers of LD chip is identical, but different with the phase place of the laser of other LD chips 111, the mutual heterogeneity that becomes of the phase place on display panels 103, thus can reduce speckle noise.
Figure 13 represents the variation of lighting device 101.Lighting device shown in this Figure 13 on the light path of 112 emitting lasers of light source, is provided with the tabular prism of wedge shape 117.When laser incided in the tabular prism of wedge shape 117, the distance of light (optical range) was different on the variation in thickness direction of prism 117, and therefore, the phase place in himself light of 111 emitting lasers of LD chip changes.In addition, about being arranged in the LD chip 111 of variation in thickness direction ..., the phase place of its laser becomes different.By like this, can reduce speckle noise.In addition, can 1 tabular prism 117 of wedge shape be set, in addition, can also change the degree (angle) of the wedge of the tabular prism 117 of each wedge shape 1 LD chip 111 correspondence.
In the above example, the phase-shifts by with the laser of each LD chip 111 reduces speckle noise, but by the light diffusion mechanism that makes the laser diffusion is set, also can reduce speckle noise on light path.Can use as the light diffusion mechanism and to have small concavo-convex frosted glass etc.In addition, also can fly's-eye lens to 113 or the surface of collector lens 102 etc. on form small concavo-convex.
In addition, in the above explanation,, also can use the bar integrator though be that fly's-eye lens is right as what integrating mechanism adopted.In addition, the LD chip is not limited in end face outgoing type, can also use surface-emitting laser.In addition, also can use the device that on single substrate, forms a plurality of LD.In addition, in the projection type video display device, be not limited in the permeation type liquid crystal display panel, also can use the reflective liquid crystal display panel, can also use the such display panel that drives respectively as the tiny mirror of pixel, replace above-mentioned display panels.In addition,, also can be used as the lighting device of outgoing white light, carry out beam split or not beam split, import in the colorful display screen of veneer by dichronic mirror etc. though possess 3 lighting device 101R, 101G, the 101B of each coloured light of outgoing in the present embodiment.Under situation, can be the formation of suitably arranging the LD of outgoing red light, blue light and green light as the lighting device of outgoing white light.
In addition, though not shown, also can locate to be provided with the polarisation converting means in anterior position of collector lens 102 etc.This polarisation converting means is made of the PBS array as mentioned above.
As mentioned above, by the invention of embodiment 2, can play the effect that reduces the speckle noise that is produced under the situation of using semiconductor laser.
(embodiment 3)
Contrast Figure 14 to Figure 21 describes the lighting device and the projection type video display device of embodiments of the invention 3 below.
Figure 14 is the figure of the optical system of expression 3 board-like projection type video display devices.This projection type video display device possesses 3 lighting device 201R, 201G, 201B (following when not refering in particular to each lighting device, as to use symbol " 201 ").Lighting device 201R outgoing red light, lighting device 201G outgoing green light, lighting device 201B outgoing blue light.The light of 201 outgoing of each lighting device is imported to by collector lens 202 among display panels 203R, 203G, the 203B of usefulness of all kinds (following when not refering in particular to each display panels, as to use symbol " 203 ").Each display panels 203 has the light incident side Polarizer, encloses formed panel part of liquid crystal and exiting side Polarizer between a pair of glass substrate (being formed with pixel electrode and alignment films).By from display panels 203R, 203G, 203B through and modulated light modulated (image light of all kinds) is synthesized by dichroic prism 204, form coloured image light.This coloured image light is amplified projection by projection lens 205, and Projection Display is on screen.
Lighting device 201 is by a plurality of LD (laser diode) chip 211 is set ... and the light source that constitutes, with the parallelization lens 212 of the light exit side that is arranged on each LD chip 211, and fly's-eye lens constitutes 213.Because above-mentioned light source is provided with a plurality of LD chips 211 ..., therefore can realize the increase of light quantity.Fly's-eye lens as shown in figure 15, is made of a pair of lens combination 213a, 213b 213,1 LD chip 211 corresponding a plurality of lens (lens combination).211 outgoing of each LD chip, and, be directed to it in corresponding locational lens combination by the light of 212 parallelizations of parallelization lens.(on the sensitive surface) reflected that the luminous intensity of LD chip 211 distributes on this lens combination, by each lens in this lens combination, many places light difference (each bright areas and the dark areas) integration on the sensitive surface imported in the display panels 203.By like this, can prevent that the corresponding light and shade of configuration with LD chip 211 appears in (on the image of screen) on the display panels 203, simultaneously, even exist luminous intensity to distribute in the LD chip 211, also can carry out the decentralized of this luminous intensity distribution, thereby make the brightness equalization everywhere on the display panels 203.
In addition, in the above-mentioned example, make the linear polarization direction of LD chip 211 consistent or roughly consistent with the linear polarization direction of display panels 203.In addition, allow the aspect ratio of light outgoing portion shape of the aspect ratio of aspect ratio, parallelization lens 212 of each lens among a pair of lens combination 213a, the 213b and LD chip 211, consistent or roughly consistent with the aspect ratio of display panels 203.In addition, make the luminous oval long side direction of LD chip 211 consistent with the long side direction of display panels 203 or roughly consistent.By like this, the light of 211 outgoing of LD chip can not imported on the almost whole surface of display panels 203 lavishly, improved the light utilization ratio.In addition, as described in example 1 above, can allow the aspect ratio of beam shape correlating factor (each lens of solid-state light emitting element, lens unit, fly's-eye lens, bar integrator), different with the aspect ratio of display panel, in anamorphose lens, make light beam consistent or roughly consistent with the aspect ratio of display panel, under the situation of present embodiment, it is just passable that fly's-eye lens all is provided with 1 anamorphose lens to 213.
Figure 16 represents the variation of lighting device 201.The light source of the lighting device shown in this Figure 16 is made of LED (light emitting diode) chip 214 and paraboloidal mirror 215.This also is provided with a plurality of lens (lens combination) to 1 led chip 214 in constituting, and receives the light of each LD chip institute outgoing, with the light of the many places of its light area respectively integration import to display panels 203.The light exit side shape of paraboloidal mirror 215 forms square approximately, consistent with the aspect ratio of display panels 203 or roughly consistent.
Figure 17 represents the variation of lighting device 201.In addition, though represented LD chip and led chip in this example, right as the luminescence chip that a pair of luminous pattern (intensity distributions profile) is different, also be not limited in such combination.Lighting device shown in this Figure 17, by with LD chip 211A ... with led chip 211B ... be arranged to array-like, and the light exit side at each chip 211A, 211B is provided with lens unit 216 ... formed light source, and be used for each chip 211A, 211B institute's outgoing and by 216 parallelizations of said lens unit light, the fly's-eye lens that integration imports to display panels 203 constitutes 213.Like this, because chip 211A, 211B are arranged to array-like, therefore can realize the increase of light quantity.Lens unit 216 forms square, and consistent or roughly consistent with the aspect ratio of display panels 203.Fly's-eye lens is made of a pair of lens combination 213a, 213b 213, and each lens import to the whole surface of display panels 203 to the light with each chip 211A, the outgoing of 211B institute.Here, LD chip 211A shown in Figure 18 (a), has single luminous point, and its light intensity distributions is Gaussian distribution shown in Figure 18 (b).In addition, led chip 211B shown in Figure 18 (c), has two luminous points, and its light intensity distributions is shown in Figure 18 (d), and the edge has the peak higher than central authorities.Therefore, owing to be arranged with the mutually different chip 211A of light intensity distributions, 211B, the light integration of each chip 211A, the outgoing of 211B institute is imported whole surface to display panels 203, therefore can allow brightness equalization everywhere on the display panels 203.
In addition, except above-mentioned two figures (light intensity distributions), can also have 3 or 4 so a plurality of patterns and constitute chip, and arrange.In addition, also can dispose each LD chip 211A ..., so that each LD chip 211A ... oval-shaped beam profile in long side direction different.
Figure 19 represents the variation of lighting device 201.In the lighting device shown in this Figure 19, used the chip of light intensity distributions with a plurality of figures.This lighting device, by with LD chip 211A ... 211B is arranged to array-like with led chip, and the light exit side at each chip 211A, 211B is provided with lens unit 216 ... formed light source, and be used for each chip 211A, 211B institute's outgoing and by 216 parallelizations of said lens unit light, the fly's-eye lens that integration imports to display panels 203 constitutes 213.Fly's-eye lens is made of a pair of lens combination 213a, 213b 213, and each lens import to display panels 203 to the light with each chip 211A, the outgoing of 211B institute.Import to give the section shape of each rectangular light beam of display panels identical, but the intensity distributions profile difference of each rectangular light beam, can allow brightness equalization everywhere on the display panels 203.
Figure 20 represents the variation of lighting device 201.Lighting device shown in this Figure 20 is made of following part: a plurality of LD chips 211 are set ... and the light source that forms; Receive the light of 211 outgoing of each LD chip, the intensity distributions conversion prism 226 of its light intensity distributions of conversion and outgoing; Parallelization lens 212 and fly's-eye lens constitute 213.Fly's-eye lens is made of a pair of lens combination 213a, 213b 213,1 LD chip 211 corresponding a plurality of lens (lens combination).
Intensity distributions conversion prism 226 for example, shown in Figure 21 (a) and (b), is made of the tabular prism of wedge shape, is set to from the laser of heavy wall side incident LD chip 211.Laser, shown in this figure (a), incide in the plane of incidence with elongated oval-shaped prism 226, but owing in this prism 226, be subjected to the reflex of refraction and reflecting surface (being coated with reflecting bodys such as metal), therefore, become oval or circular and the outgoing that oval degree relaxes.Under the situation that is ellipse, for example can allow oval long side direction consistent with the long side direction of display panels 203 or roughly consistent.
In addition, in the above explanation, be that fly's-eye lens is right as what integrating mechanism adopted, but also can use the bar integrator.In addition, the LD chip is not limited in end face outgoing type, can also use surface-emitting laser.In addition, also can use the element that on single substrate, is formed with a plurality of LD.In addition, in the projection type video display device, be not limited in the permeation type liquid crystal display panel, also can use the reflective liquid crystal display panel, can also use the such display panel that drives respectively as the tiny mirror of pixel, replace above-mentioned display panels.In addition, have 3 lighting device 201R, 201G, the 201B of each coloured light of outgoing in the present embodiment, but also can be used as the lighting device of outgoing white light, carry out beam split or not beam split, import in the color display panel of veneer by dichronic mirror etc.Under the situation as the lighting device of outgoing white light, each solid-state light emitting element can the outgoing white light, also can be the formation of suitably arranging the solid-state light emitting element of outgoing red light, blue light and green light.
In addition, though show among the figure, also can locate to be provided with the polarisation converting means in the anterior position of collector lens 202 etc.This polarisation converting means is made of the PBS array as mentioned above.
As mentioned above,, use solid-state light emitting elements such as semiconductor laser, practical lighting device and the effect of using the projection type video display device of this lighting device also can be provided with distribution even played by the invention of embodiment 3.
(embodiment 4)
Contrast Figure 22 to Figure 25 describes the lighting device and the projection type video display device of embodiments of the present invention below.
Figure 22 is the figure of the optical system of expression 3 board-like projection type video display devices.This projection type video display device possesses 3 lighting device 301R, 301G, 301B (following when not refering in particular to each lighting device, as to use symbol " 301 ").Lighting device 301R outgoing red light, lighting device 301G outgoing green light, lighting device 301B outgoing blue light.The light of 301 outgoing of each lighting device is imported to the display panels 303R of usefulness of all kinds by convex lens 302, among 303G, the 303B (following when not refering in particular to each display panels, as to use symbol " 303 ").Each display panels 303 has the light incident side Polarizer, encloses formed panel part of liquid crystal and exiting side Polarizer between a pair of glass substrate (being formed with pixel electrode and alignment films).By from display panels 303R, 303G, 303B through and modulated light modulated (image light of all kinds) is synthesized by dichroic prism 304, form coloured image light.This coloured image light is amplified projection by projection lens 305, and Projection Display is on screen.
Like this, because three-dimensional is provided with a plurality of LED311 ..., therefore can realize the increase of light quantity.And, LED311 ... the light of institute's outgoing is reflected in minute surface cylindrical body 312, carries out integration and goes out from the light-emitting face outgoing, therefore, can prevent to occur and LED 311 on the display panels 303 ... the corresponding light and shade of configuration.
In the above-mentioned minute surface cylindrical body 312, can allow the aspect ratio of above-mentioned light-emitting face consistent or roughly consistent with the aspect ratio of display panels 303.By like this, the light of 311 outgoing of led chip can not imported on the whole surface of display panels 303 lavishly, improved the utilization ratio of emergent light.
In addition, can allow above-mentioned minute surface cylindrical body 312 constitute taper, and allow the area of above-mentioned light-emitting face, bigger than the area of the face of facing mutually with above-mentioned light-emitting face.By like this, can suppress dispersing of light, and can shine in the display panels 303.
Figure 24 represents another lighting device.This lighting device is that led chip 311a is arranged to array-like, and is provided with parallel photochemical with diffraction grating unit 313 at the light exit side of each led chip 311a ... and the device that constitutes.Like this, because with led chip 311a ... be arranged to array-like, therefore can realize the increase of light quantity.Led chip 311a ... by the transparent resin moulding, by on the surface of this transparent resin, forming the concavo-convex above-mentioned diffraction grating unit 313 that constitutes ...Diffraction grating unit 313 has the wall of sowing discord mutually.Can when resin forming, model assembly be set, after moulding,, can access above-mentioned wall by above-mentioned model assembly is taken off in the place that forms above-mentioned wall.Above-mentioned wall becomes reflecting surface, can improve the light utilization ratio.Afterwards, though by diffraction grating unit 313 ..., the light of led chip 311a institute outgoing is carried out parallelization, but common lens also can effectively utilize to be directed to the axle outer somewhere light, improved the light utilization ratio.In addition, the miscellaneous part that also can will form the diffraction grating face after moulding sticks.In addition, though show the also integrator that can for example be constituted among the figure in the light exit side setting of diffraction grating 313 by the 1st fly's-eye lens and the 2nd fly's-eye lens.Can also allow the diffraction grating mask that light-focusing function is arranged, by like this, the diffraction grating face can have the function of the 1st fly's-eye lens concurrently, thereby can realize the reduction of part count.
Can also form hologram page and replace above-mentioned diffraction grating face.In addition, the wall that forms diffraction grating face or hologram page can also be tilted, make it obtain directional light or optically focused easily.In addition, also can be formed lens section of curved surface and diffraction grating face or hologram page and the formation of depositing.In addition, also can in the LED lamp that the moulding of making is respectively finished, diffraction grating face or hologram page be set, this LED lamp is arranged to array-like.In addition, also the lighting device shown in this Figure 24 can be arranged to the LED311 of the lighting device 301 shown in Figure 23.
Figure 25 represents another kind of lighting device.This lighting device is the device that is provided with polarisation converting means 314 in the light outgoing portion of LED311.This polarisation converting means 314 is made of a pair of polarisation bundle shunt (below be called PBS).Each PBS possesses polarisation diffusion barrier 314a.In addition, the light exit side of 1 side's PBS is provided with polarizer (1/2 λ plate) 314b.The polarisation diffusion barrier 314a of PBS allows for example P polarisation in the light of LED311 institute outgoing pass through, and the S polarisation is carried out 90 ° of light paths changes.S polarisation after the light path change reflected by adjacent polarisation diffusion barrier 314a, thereby the former state outgoing is gone out.In addition, see through the P polarisation of polarisation diffusion barrier 314a, be set at the above-mentioned polarizer 314b of its front side (light exit side), be transformed into S polarisation and outgoing.Also promptly, nearly all light all is transformed into the S polarisation.By allowing the polarization direction unanimity like this, can in the projection type video display device that uses display panels 303, improve the brightness on the screen.In addition, can 1 LED311 be set, also can a plurality of LED311 be set 1 polarisation converting means 314 to 1 polarisation converting means 314.In addition, also the lighting device shown in this Figure 25 can be arranged to the LED311 of the lighting device 301 shown in Figure 23.In this case, incide polarisation converting means 314, can in the part beyond the light entrance face of LED311 and the polarisation exit facet, reflecting body (reflectance coating) be set in order to prevent unwanted light.
In addition, in the projection type video display device of embodiment 4, be not limited in the permeation type liquid crystal display panel, also can use the reflective liquid crystal display panel, can also use the such display panel that drives respectively as the tiny mirror of pixel, replace above-mentioned display panels.In addition, have 3 lighting device 301R, 301G, the 301B of each coloured light of outgoing in the present embodiment, but also can be used as the lighting device of outgoing white light, carry out beam split or not beam split, import in the color display panel of veneer by dichronic mirror etc.Under the situation as the lighting device of outgoing white light, each solid-state light emitting element can the outgoing white light, also can be the formation of suitably arranging the solid-state light emitting element of outgoing red light, blue light and green light.In addition, solid-state light emitting element is not limited in light emitting diode (LED).
As mentioned above, by the invention of embodiment 4, can reach lighting device that a kind of practicality of using solid-state light emitting elements such as light emitting diode is provided and the effect of using the projection type video display device of this lighting device.
Claims (46)
1. lighting device is characterized in that possessing:
Solid-state light emitting element is arranged to the light source of array-like, and the light integration of each solid-state light emitting element institute outgoing is imported integrating mechanism to the lighting object thing.
2. lighting device according to claim 1 is characterized in that:
The light exit side of each solid-state light emitting element is provided with lens unit.
3. lighting device according to claim 2 is characterized in that:
Described lens unit and each solid-state light emitting element are one-body molded in moulding resin, or form respectively with described moulding resin, and and this moulding resin between be separated with resin bed.
4. according to claim 2 or the described lighting device of claim 3, it is characterized in that:
Described lens unit has the wall of sowing discord mutually, and described wall becomes reflecting surface.
5. lighting device according to claim 4 is characterized in that:
Be provided with reflecting body between the described place of sowing discord.
6. according to claim 2 each described lighting device to the claim 5, it is characterized in that:
Described integrating mechanism is by the 1st lens combination that is subjected to light and optically focused, and the 2nd lens combination formation that is arranged on the focal point place, and described lens unit constitutes according to importing from the light of solid-state light emitting element to described the 1st lens combination mode.
7. lighting device according to claim 6 is characterized in that:
Described lens unit and described the 1st lens combination driving fit are together.
8. according to claim 2 each described lighting device to the claim 5, it is characterized in that:
Described lens unit constitutes according to the mode of the light from solid-state light emitting element being carried out optically focused, described integrating mechanism possess be arranged on from described lens unit by after the lens combination of focal point of light constitute.
9. according to claim 6 each described lighting device to the claim 8, it is characterized in that:
Each solid-state light emitting element is corresponding one by one with each lens of each lens unit and lens combination.
10. according to claim 6 each described lighting device to the claim 9, it is characterized in that:
At the light exit side of described integrating mechanism, be provided with the polarisation converting means that constitutes by polarisation bundle shunt is arranged in array-like.
11., it is characterized in that according to each described lighting device in the claim 10:
Described polarisation bundle shunt has the quadrangular shape, makes its long side direction consistent with the long side direction of solid-state light emitting element.
12., it is characterized in that according to claim 2 each described lighting device to the claim 11:
Make each lens of the lens combination in the described integrating mechanism, consistent or roughly consistent with the aspect ratio of lighting object thing.
13., it is characterized in that according to claim 2 each described lighting device to the claim 12:
Make described lens unit consistent or roughly consistent with the aspect ratio of lighting object thing.
14., it is characterized in that according to claim 1 each described lighting device to the claim 13:
Make the aspect ratio of each solid-state light emitting element consistent or roughly consistent with the aspect ratio of lighting object thing.
15., it is characterized in that according to claim 1 each described lighting device to the claim 11:
Possess anamorphose lens, the aspect ratio that imports to the light beam in this anamorphose lens is different with the aspect ratio of lighting object thing, and the aspect ratio of the light beam of institute's outgoing is consistent or roughly consistent with the aspect ratio of lighting object thing from anamorphose lens.
16., it is characterized in that according to claim 1 each described lighting device to the claim 5:
Described integrating mechanism is made of the bar integrator.
17. lighting device according to claim 16 is characterized in that:
Make the light-emitting face of described bar integrator consistent or roughly consistent with the aspect ratio of lighting object thing.
18. lighting device according to claim 16 is characterized in that:
The light-emitting face side of described bar integrator possesses anamorphose lens, and the aspect ratio of the light-emitting face of described bar integrator is different with the aspect ratio of lighting object thing, and is consistent or roughly consistent with the aspect ratio of lighting object thing from the aspect ratio of the light beam of anamorphose lens institute outgoing.
19. a lighting device is characterized in that possessing:
Configuration arrange a plurality of as solid-state light emitting element semiconductor laser and the light source that constitutes, and the light integration of described semiconductor laser institute outgoing imported integrating mechanism to the lighting object thing, and allow the mutual inhomogenous phase shift of the phase place of light of described semiconductor laser institute outgoing mechanism.
20. lighting device according to claim 19 is characterized in that:
Phase shift mechanism is by being arranged on the light path of the light of each semiconductor laser institute outgoing, and thickness different a plurality of dull and stereotyped hyalomeres mutually constitutes.
21. lighting device according to claim 19 is characterized in that:
Phase shift mechanism is by being arranged on the light path of the light of each semiconductor laser institute outgoing, and specific inductive capacity different a plurality of dull and stereotyped hyalomeres mutually constitutes.
22., it is characterized in that according to claim 20 or the described lighting device of claim 21:
The aspect ratio of described dull and stereotyped hyalomere is consistent or roughly consistent with the aspect ratio of lighting object thing.
23., it is characterized in that according to claim 20 or the described lighting device of claim 21:
Possess anamorphose lens, the aspect ratio that imports to the light beam in this anamorphose lens is different with the aspect ratio of lighting object thing, and the aspect ratio of the light beam of institute's outgoing is consistent or roughly consistent with the aspect ratio of lighting object thing from anamorphose lens.
24. lighting device according to claim 19 is characterized in that:
Phase shift mechanism is arranged on the wedge-shaped optical element on the light path of described semiconductor laser institute emitting laser.
25. a lighting device is characterized in that possessing:
Configuration arrange a plurality of as solid-state light emitting element semiconductor laser and the light source that constitutes, and described semiconductor laser institute emitting laser integration imported integrating mechanism to the lighting object thing, and the light diffusion mechanism that makes the emitting laser diffusion of described semiconductor laser institute.
26. lighting device according to claim 25 is characterized in that:
The light diffusion mechanism is to have small concavo-convex optical element.
27. a lighting device is characterized in that possessing:
Configuration is arranged a plurality of solid-state light emitting elements and the light source that constitutes, and the light that receives each solid-state light emitting element institute outgoing, and with the many places light of its light area respectively integration import integrating mechanism to the lighting object thing.
28. lighting device according to claim 27 is characterized in that:
Described integrating mechanism is made of lens combination, and described lens combination is accepted the light from 1 solid-state light emitting element.
29. lighting device according to claim 28 is characterized in that:
Make each lens of the lens combination in the described integrating mechanism, consistent or roughly consistent with the aspect ratio of lighting object thing.
30. lighting device according to claim 28 is characterized in that:
Possess anamorphose lens, the aspect ratio that imports to the light beam in this anamorphose lens is different with the aspect ratio of lighting object thing, and is consistent or roughly consistent with the aspect ratio of lighting object thing from the aspect ratio of the light beam of anamorphose lens institute outgoing.
31. a lighting device is characterized in that possessing:
Configuration arranges that a plurality of luminous intensities distribute mutually different solid-state light emitting element and the light source that constitutes, and the light integration of each solid-state light emitting element institute outgoing is imported integrating mechanism to the lighting object thing.
32. a lighting device is characterized in that possessing:
Dispose the light source of arranging a plurality of solid-state light emitting elements and constituting, and the light that receives each solid-state light emitting element institute outgoing, the intensity distributions mapping device of its intensity distributions of conversion and outgoing, and the light integration of each intensity distributions mapping device institute outgoing imported integrating mechanism to the lighting object thing.
33. a lighting device is characterized in that possessing:
Configuration is arranged a plurality of solid-state light emitting elements and the light source that constitutes, and with the light of each solid-state light emitting element institute outgoing with mutually different light converging pattern, integration imports the integrating mechanism to the lighting object thing.
34. lighting device according to claim 31 is characterized in that:
Possess 2 luminous solid-state light emitting elements.
35., it is characterized in that according to claim 25 each described lighting device to the claim 34:
Possess semiconductor laser as solid-state light emitting element, as display panels, make the linear polarization direction of semiconductor laser consistent with the polarization direction of display panels or roughly consistent the lighting object thing.
36., it is characterized in that according to claim 25 each described lighting device to the claim 35:
Possess semiconductor laser as solid-state light emitting element, make its luminous oval long side direction consistent with the long side direction of lighting object thing or roughly consistent.
37., it is characterized in that according to claim 25 each described lighting device to the claim 36:
Possesses semiconductor laser as described solid-state light emitting element, make light from this semiconductor laser import aspect ratio to the optical element in the optical system of described lighting object thing, consistent or roughly consistent with the aspect ratio of described lighting object thing, simultaneously, make the luminous oval long side direction of described semiconductor laser consistent with the long side direction of described optical element or roughly consistent.
38. a lighting device is characterized in that:
Constitute in the following manner: inciting somebody to action one side as light-emitting face, the inboard of another side is provided with a plurality of solid-state light emitting elements as three-dimensional in the minute surface cylindrical body of reflecting surface, and the light integration of described solid-state light emitting element institute outgoing is imported to described reflecting surface, from described light-emitting face outgoing.
39., it is characterized in that according to the described lighting device of claim 38:
Minute surface tubular body forms the square tube body.
40., it is characterized in that according to the described lighting device of claim 39:
Make the aspect ratio of described light-emitting face consistent or roughly consistent with the aspect ratio of lighting object thing.
41., it is characterized in that according to claim 38 each described lighting device to the claim 40:
Described minute surface cylindrical body is taper, and the area of the face that the area ratio and the described light-emitting face of described light-emitting face faced mutually is big.
42. a lighting device is characterized in that possessing:
The diffraction optical element portion that has parallelization function or light-focusing function at the light exit side of solid-state light emitting element.
43. a lighting device is characterized in that possessing:
The hologram optical element portion that has parallelization function or light-focusing function at the light exit side of solid-state light emitting element.
44. a lighting device is characterized in that:
Two dimension or three-dimensional are provided with a plurality of solid-state light emitting elements, and the light exit side to each solid-state light emitting element is provided with polarization conversion element simultaneously.
45., it is characterized in that according to claim 1 each described lighting device to the claim 44:
Possesses the permeation type liquid crystal display panel that is not provided with microlens, as the lighting object thing.
46. a projection type video display device is characterized in that:
Possess as claim 1 each described lighting device to the claim 45.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP377870/2002 | 2002-12-26 | ||
| JP2002377870 | 2002-12-26 | ||
| JP377871/2002 | 2002-12-26 | ||
| JP377872/2002 | 2002-12-26 | ||
| JP379014/2002 | 2002-12-27 |
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| CN1732403A true CN1732403A (en) | 2006-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200380107728 Pending CN1732403A (en) | 2002-12-26 | 2003-12-25 | Illuminating device and porjection type image display unit |
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| CN (1) | CN1732403A (en) |
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