CN101191987B - Illumination apparatus and projection image display device - Google Patents
Illumination apparatus and projection image display device Download PDFInfo
- Publication number
- CN101191987B CN101191987B CN2007101944388A CN200710194438A CN101191987B CN 101191987 B CN101191987 B CN 101191987B CN 2007101944388 A CN2007101944388 A CN 2007101944388A CN 200710194438 A CN200710194438 A CN 200710194438A CN 101191987 B CN101191987 B CN 101191987B
- Authority
- CN
- China
- Prior art keywords
- mentioned
- beam split
- light
- polarized condition
- green
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Liquid Crystal (AREA)
- Projection Apparatus (AREA)
- Polarising Elements (AREA)
- Optical Filters (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Microscoopes, Condenser (AREA)
Abstract
The invention provides an illumination apparatus and a projection display device which can inhibit integral cost uprising even four color lights are used. The device comprises a liquid crystal panel 30R, a liquid crystal panel 30G, a liquid crystal panel 30B, an illumination unit 120 of a polarization adjustment element 30Ye, and a crisscross dichroic cube 50 for combining light irradiating from the liquid crystal panels 30R, 30G, and 30B. A green component light and a yellow component light irradiate to the polarization adjustment element 30Ye, the green component light permeates the polarization adjustment element 30Ye without being modulation, and the yellow component light permeates the polarization adjustment element 30Ye after being modulated. The green component light and the yellow component light permeating the the polarization adjustment element 30Ye irradiate into the liquid crystal panel 30G.
Description
Technical field
The present invention relates to become lighting device and the projection type video display device that also utilizes the 4th colour content light the beam split except that the beam split of red one-tenth, the beam split of green one-tenth, blueness.
Background technology
In the past, known have the cruciform dichroic cube that possesses 3 optical modulation elements corresponding, the light that is penetrated by 3 optical modulation elements is synthesized with 3 coloured light and will be by the cruciform dichroic cube synthetic after light carry out the projection type video display device of the projector equipment of projection.
At this, the cruciform dichroic cube has 3 light entrance faces of incident ray and 1 light-emitting face of emergent ray.Therefore, when the light that is incident to the cruciform dichroic cube is 3 coloured light, just enough as long as projection type video display device has 1 cruciform dichroic cube.
On the other hand, in order to improve color reproduction and brightness, proposed to utilize the projection type video display device of 4 looks above light.For example, projection type video display device is by except that 3 looks that utilize red, green, blue, also utilizes orange, yellow or cyan, thereby realizes improving color reproduction and brightness (for example patent documentation 1).
Patent documentation 1: the spy opens 2002-287247 communique (claim 1, claim 4, Fig. 1 etc.)
At this,, adopt a cruciform dichroic cube can not the light more than 4 looks be synthesized when projection type video display device has light time more than 4 looks.Therefore, projection type video display device need have a plurality of dichroic cube (perhaps cruciform dichroic cube).
For example, under situation about need synthesize to 4 coloured light, projection type video display device, by obtain 2 by 2 coloured light the synthetic light after synthetic and 2 synthetic light are carried out further synthetic, thereby obtain the synthetic light of 4 looks.In addition, projection type video display device, by obtain 3 coloured light after synthetic synthetic light and will synthesize light and the light of 1 look synthesizes, obtain 4 looks synthetic light and also can.Projection type video display device, by obtain 2 coloured light after synthetic synthetic light and will synthesize light and 2 coloured light synthesize, also can thereby obtain 4 looks synthetic light.
Here, between optical modulation element and projector equipment, a plurality of dichroic cube (perhaps cruciform dichroic cube) need be set.Therefore, the rear cut-off distance of projector equipment increases.
Its result, because used projector equipment can not be migrated in the projection type video display device that utilizes 3 coloured light, thereby the cost of projection type video display device can rise on the whole.
Summary of the invention
Therefore, the present invention makes in view of above-mentioned technical matters, and its purpose is to provide a kind of lighting device and projection type video display device that also can the whole cost of restraining device under the situation of utilizing the light more than 4 looks rises.
Of the present invention one is characterised in that, a kind of lighting device (lighting unit 120), comprise the red modulation element (liquid crystal panel 30R) that becomes beam split to modulate with input signal to redness according to redness, the green glow modulator element (liquid crystal panel 30G) that becomes beam split to modulate with input signal to green according to green, the blue light modulator element (liquid crystal panel 30B) that becomes beam split to modulate with input signal to blueness according to blueness, and the polarized condition that the 4th colour content light is modulated is adjusted element (polarized condition is adjusted element 30Ye), wherein, also have from above-mentioned red modulation element, above-mentioned green glow modulator element, the synthetic portion's (cruciform dichroic cube 50) of the look that the light that above-mentioned blue light modulator element penetrates synthesizes, in the beam split of above-mentioned red one-tenth, the beam split of above-mentioned green one-tenth, any colour content light in the beam split of above-mentioned blue one-tenth promptly is superimposed as beam split (for example green one-tenth beam split), be incident to above-mentioned polarized condition with above-mentioned the 4th colour content light and adjust element, above-mentioned polarized condition adjusts that element is not adjusted the above-mentioned polarized condition that is superimposed as beam split and with the above-mentioned branch light transmission that is superimposed as, see through after the polarized condition adjustment with above-mentioned the 4th colour content light, adjust above-mentioned beam split and above-mentioned the 4th colour content light of being superimposed as that element penetrates from above-mentioned polarized condition, be incident to above-mentioned red modulation element, in above-mentioned green glow modulator element and the above-mentioned blue light modulator element is specific optical modulation element (liquid crystal panel 30G) corresponding to the above-mentioned optical modulation element that is superimposed as beam split.
According to described feature, polarized condition is adjusted element and is not adjusted the polarized condition that is superimposed as beam split and will be superimposed as the branch light transmission, sees through after the polarized condition adjustment with the 4th colour content light.Adjust the 4th colour content light that element penetrates and be superimposed as beam split by polarized condition and be incident to corresponding to the optical modulation element that is superimposed as beam split.That is, the 4th colour content optical superposition is supplied to look synthetic portion after being superimposed as beam split.Therefore, even becoming except redness beam split, the beam split of green one-tenth, the beam split of blue one-tenth, also utilize under the situation of the 4th colour content light, the light that is incident to look synthetic portion also is 3 kinds.Its result need not to change the design of projector equipment, thus can restraining device the rising of whole cost.
In addition, owing to the 4th colour content optical superposition is projected in being superimposed as beam split, thereby projection is improved to the brightness of the image of screen.
As mentioned above, polarized condition is adjusted element owing to will be superimposed as the branch light transmission not adjusting the polarized condition that is superimposed as beam split, see through after the polarized condition adjustment with the 4th colour content light, so, in the structure of the lighting device that utilizes 3 coloured light, by polarized condition is set on the light path of beam split adjusts element being superimposed as, can tackle the new mode of utilizing 4 coloured light.In other words, alleviate subsidiary new design burden in new mode is used, can obtain advantage on the cost.
Another feature of the present invention, in above-mentioned feature, above-mentioned polarized condition adjust element to the polarization direction of above-mentioned the 4th colour content light is not rotated or make above-mentioned the 4th colour content light polarization direction rotation roughly 90 ° carry out selectivity and switch.
Another feature of the present invention, in above-mentioned feature, the resolution that above-mentioned polarized condition is adjusted element is lower than the resolution of above-mentioned red modulation element, above-mentioned green glow modulator element and above-mentioned blue light modulator element.
Another feature of the present invention, in above-mentioned feature, lighting device further comprise based on above-mentioned red with input signal, above-mentioned green with input signal and above-mentioned blueness input signal, control the modulation voltage control part (modulation voltage control part 220) of modulation voltage of adjusting the polarized condition of above-mentioned the 4th colour content light by above-mentioned polarized condition adjustment element.
Another feature of the present invention, in above-mentioned feature, above-mentioned specific light modulator element (as liquid crystal panel 30G) has the light incident side Polarizer (Polarizer 31G) of being located at light incident side and the exiting side Polarizer (Polarizer 32G) of being located at light exit side, above-mentioned light incident side Polarizer interdicts above-mentioned the 4th colour content light when above-mentioned the 4th colour content light does not inject to above-mentioned look synthetic portion side, above-mentioned exiting side Polarizer interdicts the above-mentioned beam split that is superimposed as above-mentioned being superimposed as when beam split does not inject to above-mentioned look synthetic portion side.
In addition, can incident lateral deviation tabula rasa and exiting side Polarizer be set at red modulation element, green glow modulator element, and the light incident side and the light exit side of blue light modulator element certainly.
A feature of the present invention, a kind of projection type video display device, comprise: send the beam split of red one-tenth and become beam split to become the light source (light source 10) of beam split and the 4th colour content light with blueness with green, according to redness with input signal to the above-mentioned red red modulation element (liquid crystal panel 30R) that becomes beam split to modulate, according to green with input signal to the above-mentioned green green glow modulator element (liquid crystal panel 30G) that becomes beam split to modulate, according to blueness with input signal to the above-mentioned blue blue light modulator element (liquid crystal panel 30B) that becomes beam split to modulate, reach the polarized condition that above-mentioned the 4th colour content light is modulated and adjust element (polarized condition is adjusted element 30Ye), wherein, also have from above-mentioned red modulation element, the look that above-mentioned green glow modulator element and the emitted light of above-mentioned blue light modulator element synthesize synthesizes portion's (cruciform dichroic cube 50), the projector equipment (projecting lens unit 110) that carries out projection with the light that the synthetic portion of above-mentioned look is synthesized, the beam split of above-mentioned red one-tenth, the beam split of above-mentioned green one-tenth, any colour content light in the beam split of above-mentioned blue one-tenth promptly is superimposed as beam split, be incident to above-mentioned polarized condition with above-mentioned the 4th colour content light and adjust element, above-mentioned polarized condition adjusts that element is not adjusted the above-mentioned polarized condition that is superimposed as beam split and with the above-mentioned branch light transmission that is superimposed as, see through after the polarized condition adjustment with above-mentioned the 4th colour content light, above-mentioned polarized condition adjusts that emitted above-mentioned of element is superimposed as beam split and above-mentioned the 4th colour content light is incident to above-mentioned red modulation element, in above-mentioned green glow modulator element and the above-mentioned blue light modulator element corresponding to the above-mentioned optical modulation element that is superimposed as beam split.
[invention effect]
According to the present invention, even but can provide a kind of under the situation of utilizing the light more than 4 looks also lighting device and the projection type video display device that rise of the whole cost of restraining device.
Description of drawings
Fig. 1 is the skeleton diagram of the projection type video display device 100 of expression the 1st embodiment.
Fig. 2 is the summary construction diagram of the lighting unit 120 of expression the 1st embodiment.
Fig. 3 is the figure of the RGB color reproduction scope of expression the 1st embodiment.
Fig. 4 is the figure that the polarized condition of expression the 1st embodiment is adjusted element 30Ye.
Fig. 5 is the figure that the polarized condition of expression the 1st embodiment is adjusted the combination of element 30Ye and Polarizer 31G.
Fig. 6 is the block diagram of function of the projection type video display device 100 of expression the 2nd embodiment.
Fig. 7 is the look of image in expression the 2nd embodiment and the figure of the relation between each chrominance signal.
Fig. 8 is the summary construction diagram of the lighting unit 120 of expression the 3rd embodiment.
Fig. 9 is the summary construction diagram of the lighting unit 120 of expression the 4th embodiment.
Figure 10 is the summary construction diagram of the lighting unit 120 of expression the 5th embodiment.
Figure 11 is used to illustrate that the polarized condition of the 5th embodiment adjusts the figure of element 37Ye.
Figure 12 is the figure that is used for illustrating the cutoff wavelength of the 5th embodiment catoptron 322.
Figure 13 is the structural drawing of the liquid crystal panel 30 of expression the 6th embodiment.
The figure of Figure 14 for being used for the light that light source 10 (UHP lamp) sends is described.
Symbol description
10 ... light source, 21～25 ... catoptron, 30 ... liquid crystal panel, 30Ye ... polarized condition is adjusted element, 31,32 ... Polarizer, 35 ... liquid crystal panel, 35Ye ... polarized condition is adjusted element, 37Ye ... polarized condition is adjusted element, 50 ... the cruciform dichroic cube, 100 ... projection type video display device, 110 ... projecting lens unit, 120 ... lighting unit, 130 ... control part, 131～133 ... the PBS cube, 137,138 ... the phasic difference plate, 200 ... screen, 210 ... signal receiving part, 220 ... the modulation voltage control part, 231～234 ... the PBS cube, 237～239 ... arrowband phasic difference plate, 321～322 ... catoptron, 331～333 ... catoptron.
Embodiment
Projection image display to embodiment of the present invention describes with reference to the accompanying drawings.In the accompanying drawing below, give identical or similar symbol to identical or similar part.
Wherein, accompanying drawing is schematically, should be noted that the different of each dimensional ratios etc. and reality.Therefore, particularly size etc. should be judged with reference to the following description.Certainly, accompanying drawing also comprises parts inequality such as mutual size relationship and ratio each other.
[the 1st embodiment]
(summary of projection type video display device)
Summary to the 1st embodiment projection type video display device describes with reference to the accompanying drawings.Fig. 1 represents the skeleton diagram of the projection type video display device 100 of the 1st embodiment.
As shown in Figure 1, projection type video display device 100 has projecting lens unit 110, will be by projecting lens unit 110 enlarged image optical projections on screen 200.As described later, projection type video display device 100 also utilizes the beam split of yellow one-tenth as the 4th colour content light except utilizing redness to become beam split, the beam split of green one-tenth and the beam split of blue one-tenth.
(schematic configuration of lighting unit)
Schematic configuration to the lighting unit of the 1st embodiment describes with reference to the accompanying drawings.Fig. 2 is the figure of schematic configuration of the lighting unit 120 of expression the 1st embodiment.In Fig. 2, it should be noted PBS (polarization beam splitter) that the polarization direction of the light that omitted the fly lens that makes the light uniformization that light source 10 sends, light source 10 is sent is consistent with a polarization direction (as the P polarization direction) etc.
As shown in Figure 2, lighting unit 120 has light source 10, a plurality of liquid crystal panel 30 (liquid crystal panel 30R, liquid crystal panel 30G and liquid crystal panel 30B), polarized condition adjustment element 30Ye and cruciform dichroic cube 50.In addition, in Fig. 2, it should be noted that although illustrate projecting lens unit 110, projecting lens unit 110 is not contained in the lighting unit 120.
As shown in Figure 3, here, the beam split of yellow one-tenth is that the beam split of redness one-tenth, green become the look reproducible light outside beam split and the blueness one-tenth reproducible color range of beam split (RGB color reproduction scope).In utilizing the projection type projection display equipment of 3 coloured light, the light of yellow one-tenth beam split in the look detachment process, being removed.
Therefore, do not make at liquid crystal panel 30R under the situation of the red polarization direction rotation that becomes beam split, become beam split to be interdicted, thereby redly become beam split not shine cruciform dichroic cube 50 by Polarizer 32R owing to see through the redness of Polarizer 31R.On the other hand, make at liquid crystal panel 30R under the situation of the red polarization direction rotation that becomes beam split, owing to see through the red composition light transmission Polarizer 32R of Polarizer 31R, so red composition light can shine cruciform dichroic cube 50.
Same, liquid crystal panel 30G becomes beam split and the beam split of yellow one-tenth to modulate by the polarization direction rotation that makes beam split of green one-tenth and the beam split of yellow one-tenth to green.Side in the incident of liquid crystal panel 30G light is provided with Polarizer 31G, and this Polarizer will have the light transmission of a polarization direction and interdict the light with other polarization directions.On the other hand, be provided with Polarizer 32G in the side of liquid crystal panel 30G light ejaculation, this Polarizer will have the light transmission of other polarization directions and interdict the light with a polarization direction.
Polarized condition is adjusted element 30Ye and is come to become beam split to modulate to yellow by the polarized condition of adjusting the beam split of yellow one-tenth.On the other hand, polarized condition adjustment element 30Ye does not adjust the polarized condition of green one-tenth beam split and sees through the beam split of green one-tenth.
Wherein, polarized condition is adjusted element and is meant the element that can adjust the polarized condition that is incident to the linear polarization (line polarisation) on self element, and penetrates line polarisation or elliptical polarized light (or rotatory polarization).
For example, polarized condition is adjusted element and whether is applied with voltage according on self element, can not rotate the polarization direction of the line polarisation that incides self element and directly penetrate the line polarisation state, incide self element the line polarisation the polarization direction rotation roughly 90 ° and penetrate the polarization direction rotation roughly the state of the line polarisation after 90 ° switch.
Polarized condition is adjusted element also can be according to the size of the voltage that applies on self element, will adjust in 0～90 ° of scope by the line polarisation that is incident to self element with from the angle that the line polarisation that self element penetrates constitutes.
Polarized condition is adjusted element also can be according to the size of the voltage that applies on self element, and the line polarisation that is incident to self element is adjusted into elliptical polarized light (or rotatory polarization).
In addition, adjust the adjustment of the polarization direction that element finishes, can control to see through and be located at the light quantity of Polarizer that polarized condition is adjusted the light emitting side of element by polarized condition.
Adjust element as polarized condition, can consider to adopt notch filter (notch filter) type element and edge filter device (edge filter) type element.
The notch filter type element can be only adjusted the polarized condition of the light with specific wavelength band territory.For example, the notch filter type element is only adjusted having the polarized condition that with the territory, promptly has the light in yellow wavelengths band territory than the long long wavelength of green.By utilizing the notch filter type element, can cut down no light (for example yellow one-tenth beam split).
Edge filter device type element can not adjusted the polarized condition of the light with specific wavelength band territory, and the polarized condition of light with other wavelength band territories is adjusted.For example, edge filter device type element is not adjusted the polarized condition of the light with green wavelength band territory, and to have than the more long wavelength of green wavelength with the territory and more the polarized condition of the light in short wavelength band territory adjust.By using edge filter device type element, can improve the excitation of light (becoming beam split) as green with specific wavelength band territory.
In the 1st embodiment, it should be noted, polarized condition adjust element 30Ye for to or do not make the light polarization direction rotation of yellow composition or make and yellowly become beam split polarization direction half-twist to carry out the element that selectivity is switched.In addition, should also be noted that, polarized condition is adjusted element 30Ye and do not have the structure that becomes the polarization direction of beam split to switch to yellow in each zone of a plurality of cut zone (as pixel), and becomes the polarization direction of beam split to switch to all yellow that are incident to polarized condition adjustment element 30Ye.
For example, shown in Fig. 4 (a), polarized condition is adjusted element 30Ye under the state that does not apply a voltage to polarized condition adjustment element 30Ye (power-off), green is not become the polarization direction rotation of beam split and the beam split of yellow one-tenth, becomes beam split and yellow to become beam split and see through green.
On the other hand, shown in Fig. 4 (b), polarized condition is adjusted element 30Ye under the state that applies a voltage to polarized condition adjustment element 30Ye (electric power starting), only makes the polarization direction half-twist of yellow one-tenth beam split, and sees through beam split of green one-tenth and the beam split of yellow one-tenth.
At this, the yellow of being adjusted element 30Ye ejaculation by polarized condition becomes beam split and the beam split of green one-tenth to be irradiated on the Polarizer 31G.The light (as the S polarisation) that Polarizer 31G will have a polarization direction sees through and blocking has the light (as the P polarisation) of other polarization directions.Therefore, adjust the polarization direction rotation whether element 30Ye makes the beam split of yellow one-tenth by polarized condition, thereby control arrives the light quantity that the yellow of cruciform dichroic cube 50 becomes beam split.
50 pairs of light from liquid crystal panel 30R, liquid crystal panel 30G and liquid crystal panel 30B ejaculation of cruciform dichroic cube synthesize.That is, the redness that penetrate from liquid crystal panel 30R of 50 pairs of cruciform dichroic cube become beam split, the green that penetrates from liquid crystal panel 30G becomes beam split and the yellow blueness that becomes beam split and penetrate from liquid crystal panel 30B becomes beam split to synthesize.In addition, cruciform dichroic cube 50 will contain the beam split of red one-tenth, green becomes beam split, blueness to become the synthetic light (image light) of beam split and the beam split of yellow one-tenth to penetrate to projecting lens unit 110 sides.
As mentioned above, projecting lens unit 110 will project to screen 200 by the synthetic light (image light) that cruciform dichroic cube 50 is synthesized.
(polarized condition is adjusted the function of element)
The function that the polarized condition of the 1st embodiment is adjusted element describes with reference to the accompanying drawings.Fig. 5 is used to illustrate that the polarized condition of the 1st embodiment adjusts the figure of the function of element (polarized condition is adjusted element 30Ye).
Particularly, polarized condition shown in Figure 5 is adjusted the combination of element 30Ye and Polarizer 31G.Polarized condition is adjusted element Ye-1 for only making the yellow element that becomes the polarization direction half-twist of beam split applying (electric power starting) under the state of voltage.On the other hand, polarized condition adjustment element Ye-2 is the element that (power-off) only makes the polarization direction half-twist of yellow one-tenth beam split under the state that does not apply voltage.
Polarizer G-1 is for seeing through the element that the light with P polarisation interdicts the light with S polarisation.Use when the light that Polarizer G-1 for example sends at light source 10 is consistent with the P polarisation.On the other hand, Polarizer G-2 is for seeing through the element that the light with S polarisation interdicts the light with P polarisation.Use when the light that Polarizer G-2 for example sends at light source 10 is consistent with the S polarisation.
As shown in Figure 5, under the light that light source 10 the sends situation consistent with the P polarisation, if consider the situation that adopts polarized condition to adjust element Ye-1, the light quantity that the yellow that then arrives cruciform dichroic cube 50 becomes beam split is adjusted under the state that element Ye-1 do not apply voltage (power-off) for maximum in polarized condition.Apply under the state of voltage and adjust element Ye-1 in polarized condition, because the polarization direction (S polarisation) of yellow one-tenth beam split is different with the polarization direction (P polarisation) of green one-tenth beam split, thereby the yellow of S polarisation becomes beam split by Polarizer G-1 (the Polarizer 31G that liquid crystal panel 35G light incident side is provided with) blocking.
On the other hand, if consider to adopt polarized condition to adjust the situation of element Ye-2, the yellow that then arrives cruciform dichroic cube 50 becomes the light quantity of beam split to apply the state (electric power starting) of voltage down for maximum at polarized condition adjustment element Ye-2.Do not apply under the state of voltage and adjust element Ye-2 in polarized condition, because the polarization direction (S polarisation) of yellow one-tenth beam split is different with the polarization direction (P polarisation) of green one-tenth beam split, thereby the yellow of S polarisation becomes beam split by Polarizer G-1 (the Polarizer 31G that liquid crystal panel 35G light incident side is provided with) blocking.
Next, if consider to adopt polarized condition to adjust the situation of element Ye-1 under the light that light source 10 the sends situation consistent with the S polarisation, the light quantity that the yellow that then arrives cruciform dichroic cube 50 becomes beam split adjusts in polarized condition that (power-off) is maximum under the state that element Ye-1 do not apply voltage.Apply under the state of voltage and adjust element Ye-1 in polarized condition, because the polarization direction (P polarisation) of yellow one-tenth beam split is different with the polarization direction (S polarisation) of green one-tenth beam split, thereby the yellow of P polarisation becomes beam split by Polarizer G-2 (the Polarizer 31G that liquid crystal panel 35G light incident side is provided with) blocking.
On the other hand, if consider to adopt polarized condition to adjust the situation of element Ye-2, the yellow that then arrives cruciform dichroic cube 50 becomes the light quantity of beam split to apply the state (electric power starting) of voltage down for maximum at polarized condition adjustment element Ye-2.Do not apply under the state of voltage and adjust element Ye-2 in polarized condition, because the polarization direction (P polarisation) of yellow one-tenth beam split is different with the polarization direction (S polarisation) of green one-tenth beam split, thereby the yellow of P polarisation becomes beam split by Polarizer G-2 (the Polarizer 31G that liquid crystal panel 35G light incident side is provided with) blocking.
(effect and effect)
According to the projection type video display device 100 of the 1st embodiment, polarized condition is adjusted element 30Ye and is not become beam split to modulate and see through the beam split of green one-tenth to green, becomes beam split to modulate the back to yellow and sees through the beam split of yellow one-tenth.The yellow of adjusting element 30Ye ejaculation from polarized condition becomes beam split and the beam split of green one-tenth to be incident to liquid crystal panel 30G.That is, yellow composition optical superposition becomes beam split and is supplied to cruciform dichroic cube 50 in green.Therefore, even also utilize under the situation of yellow one-tenth beam split become beam split, the beam split of green one-tenth and the beam split of blue one-tenth except that redness, the light that is incident to cruciform dichroic cube 50 also is 3 kinds.Its result need not to change the design of projecting lens unit 110, can rise by the whole cost of restraining device.
In addition, owing to yellow composition optical superposition becomes beam split to be projected in green,, projecting lens unit 110 improves thereby being projected to the brightness of the image on the screen etc.
As mentioned above, owing to not becoming beam split to modulate to green, polarized condition adjustment element 30Ye sees through the beam split of green one-tenth, become beam split to modulate the back to yellow and see through the beam split of yellow one-tenth, thereby in the structure of the projection type video display device 100 of the light that utilizes 3 looks, adjust element by configuration polarized condition on the light path that becomes beam split in green, can tackle the new mode of utilizing 4 coloured light.That is, can alleviate the new design burden that adopts new mode to bring, have cost advantage.
(the 2nd embodiment)
With reference to the accompanying drawings the 2nd embodiment is described.Below mainly the difference between above-mentioned the 1st embodiment and the 2nd embodiment is described.
Particularly, although do not specially refer in above-mentioned the 1st embodiment, but in the 2nd embodiment, adjust the modulation voltage that element 30Ye becomes the polarized condition of beam split to adjust to yellow by polarized condition, control with input signal with input signal and blueness with input signal, green according to redness.
In addition, in above-mentioned the 1st embodiment, polarized condition is adjusted element 30Ye and is become the rotation of beam split polarization direction or make yellow become the polarization direction half-twist of beam split to carry out the selectivity switching not making yellow.With respect to this, in the 2nd embodiment, become the polarized condition of beam split to adjust to yellow by adjusting element 30Ye by polarized condition, the polarization direction of yellow one-tenth beam split is controlled in 0～90 ° of scope.
(function of projection type video display device)
Function to the projection type video display device of the 2nd embodiment describes with reference to the accompanying drawings.Fig. 6 is the block diagram of function that the projection type video display device 100 of the 2nd embodiment is shown.
As shown in Figure 6, projection type image show transposition 100 comprise have signal receiving part 210, the control part 130 of modulation voltage control part 220.
Signal receiving part 210 receive each chrominance signal (red with input signal, green with input signal, and the blue input signal of using).For example, signal receiving part 210 obtains each chrominance signal from the look explant that is separated outstanding signal by picture signal.
Modulation voltage control part 220 is controlled the modulation voltage of each liquid crystal panel 30 (liquid crystal panel 30R, liquid crystal panel 30G, liquid crystal panel 30B, polarized condition are adjusted element 30Ye) based on each chrominance signal of being obtained by signal receiving part 210.
Particularly, modulation voltage control part 220 does not change redness with input signal and imports among the liquid crystal panel 30R.Equally, modulation voltage control part 220 does not change green with input signal and imports among the liquid crystal panel 30G, blueness is not changed with input signal and import among the liquid crystal panel 30B.On the other hand, modulation voltage control part 220 with input signal, green with input signal and bluely calculate the yellow degree of expressing that becomes beam split with input signal, generates the yellow signal of the modulation voltage that is used to control the beam split of yellow one-tenth based on redness.
Wherein, modulation voltage control part 220 calculates the typical value of brightness with input signal with input signal and blueness with input signal, green based on redness.The typical value of brightness is the minimum value of brightness, the maximal value of brightness, the mean value of brightness etc.Next, modulation voltage control part 220 is determined the stack amount of the relative image of yellow one-tenth beam split according to the typical value of brightness, and the control polarized condition is adjusted the modulation voltage of element 30Ye.
If for example to show that with 8 bits series the situation of each chrominance signal is an example, then the typical value in brightness is 255 o'clock, yellow value with signal is maximal value (that is, 255).On the other hand, be 128 o'clock in the typical value of brightness, yellow value with signal is peaked half (that is, 128).
Therefore, the image that shows on the screen 200 for black situation under because the typical value of brightness is 0, thereby yellow value with signal also is 0.On the other hand, under the image that shows on the screen 200 was white situation, because the typical value of brightness is 255, thereby yellow value with signal also was 255.Therefore, under the image that shows on the screen 200 is white situation, adjust the light that element 30Ye penetrates owing to added by polarized condition in the light that liquid crystal panel 30G penetrates, thereby the brightness of shown image improves on the screen 200.
Next the relation between the colour content light used in the color of image and the color reproduction is described.Particularly, the amount of each colour content light (being the modulation voltage of each liquid crystal panel 30) is controlled according to the color of image.As shown in Figure 7, under image is white situation, redly become beam split, greenly become beam split, bluely become beam split and yellowly become beam split all to be used.At image is under the situation of deceiving, and the beam split of red one-tenth, the beam split of green one-tenth, blueness become beam split and yellow to become beam split all not to be used.
Under image is red situation, only use the red beam split that becomes.Same, under image is green situation, only use the green beam split that becomes; At image is under the situation of blueness, only uses the beam split of blue one-tenth.
At image is under the situation of yellow, goes up and can not only utilize yellow to become beam split because the beam split of yellow one-tenth is incident to liquid crystal panel 30G, so, sneak into green in the yellow in order to be suppressed at, adopt redness to become beam split and green to become beam split and do not use the beam split of yellow one-tenth.Certainly, if the colour balance of yellow can be kept within the specific limits, also can use the beam split of yellow one-tenth.
At image is not white, black, red, green, blue, and yellow but under other the situation of color, redly becomes beam split, greenly becomes beam split, bluely becomes beam split and yellowly become beam split all to be used.Adjust the modulation voltage of the polarized condition of yellow one-tenth beam split, can suitably select with input signal with input signal and blueness with input signal, green according to redness.
(effect and effect)
Projection type video display device 100 according to the 2nd embodiment, since yellow with signal (adjusting the yellow modulation voltage that becomes the polarized condition of beam split) be based on red with input signal, green with input signal, and bluely use input signal and controlled, it is destroyed that thereby the colour balance of the image of projection on screen 200 does not have, and can suitably realize the raising of brightness of image.
[the 3rd embodiment]
With reference to the accompanying drawings the 3rd embodiment is described.Below mainly the difference between above-mentioned the 1st embodiment and the 3rd embodiment is described.
Particularly, in above-mentioned the 1st embodiment, the permeation type liquid crystal panel is used as optical modulation element, and in the 3rd embodiment, adopt reflective liquid crystal panel (LCOS; Liquid Crystal OnSilicon) as optical modulation element.
(schematic configuration of lighting unit)
Schematic configuration to the lighting unit spare of the 3rd embodiment describes with reference to the accompanying drawings.Fig. 8 is the figure of schematic configuration of the lighting unit 120 of expression the 3rd embodiment.It should be noted, in Fig. 8 to giving same symbol with the same structure of above-mentioned the 1st embodiment.
As shown in Figure 8, lighting unit 120 has light source 10, a plurality of liquid crystal panel 35 (liquid crystal panel 35R, liquid crystal panel 35G, liquid crystal panel 35B), polarized condition adjustment element 35Ye, a plurality of reflector group (catoptron 121～catoptron 123), a plurality of PBS cube (PBS cube 131～PBS cube 133), a plurality of phasic difference plate (phasic difference plate 137 and phasic difference plate 138), cruciform dichroic cube 50.
Polarized condition is adjusted element 35Ye and is become beam split to modulate by adjusting yellow composition polarized state of light to yellow.On the other hand, polarized condition adjustment element 35Ye does not adjust green composition polarized state of light and sees through the beam split of green one-tenth.
In addition, PBS cube 132 will be adjusted yellow that element 35Ye penetrates from polarized condition and become the yellow with S polarization direction the beam split to become beam split (Ye-s) to reflect and be directed to liquid crystal panel 35G side.On the other hand, PBS cube 132 will be adjusted the yellow that element 35Ye penetrates by polarized condition and become the yellow with P polarization direction in the beam split to become beam split (Ye-p) to see through.PBS cube 132 will be become the yellow with P polarization direction in the beam split to become beam split (Ye-p) to see through and be directed to cruciform dichroic cube 50 sides by the yellow of liquid crystal panel 35G reflection.
Like this, it should be noted that the yellow of being adjusted element 35Ye ejaculation by polarized condition becomes the yellow that has the S polarization direction in the beam split to become beam split (Ye-s), becomes beam split (G-s) to be incident to liquid crystal panel 35G with the green with S polarization direction.
(effect and effect)
According to the projection type video display device 100 of the 3rd embodiment, even under the situation that adopts reflective liquid crystal panel (LCOS), also can access and the identical effect of above-mentioned the 1st embodiment.
In addition, under the situation of the light that utilizes 3 looks, owing to also need PBS cube 131～PBS cube 133, so, it should be noted, in the projection type video display device 100 of the 3rd embodiment, the same to the distance (rear cut-off distance) the projecting lens unit 110 with the situation of the light that utilizes 3 looks from each liquid crystal panel 35.
(the 4th embodiment)
With reference to the accompanying drawings the 4th embodiment is described.Below mainly describe with regard to the difference of above-mentioned the 1st embodiment and the 4th embodiment.
Particularly, in above-mentioned the 1st embodiment, adopt the permeation type liquid crystal panel as optical modulation element, and in the 4th embodiment, adopt reflective liquid crystal panel (LCOS; Liquid Crystal On Silicon) as optical modulation element.
(schematic configuration of lighting unit)
Schematic configuration to the lighting unit of the 4th embodiment describes with reference to the accompanying drawings.Fig. 9 is the figure of schematic configuration of the lighting unit 120 of expression the 4th embodiment.It should be noted, in Fig. 9, to giving same symbol with the same structure of above-mentioned the 1st embodiment.
Identical with the 1st embodiment, in Fig. 9, it should be noted, omitted the polarization direction of fly lens that makes the light uniformization that light source 10 sends and the light that light source 10 is sent PBS (polarization beam splitter) consistent etc. with a polarization direction (as the P polarization direction).
As shown in Figure 9, lighting unit 120 has light source 10, a plurality of liquid crystal panel 35 (liquid crystal panel 35R, liquid crystal panel 35G and liquid crystal panel 35B), polarized condition adjustment element 35Ye, a plurality of PBS cube (PBS cube 231～PBS cube 234) and a plurality of arrowband phasic difference plate (arrowband phasic difference plate 237～arrowband phasic difference plate 239).
Polarized condition is adjusted element 35Ye and is become beam split to modulate by adjusting yellow composition polarized state of light to yellow.On the other hand, polarized condition adjustment element 35Ye does not adjust green composition polarized state of light and sees through the beam split of green one-tenth.
The allocation position of polarized condition adjustment element 35Ye is not limited to the light exit side of PBS cube 231, also can be the light exit side of PBS cube 232.
In addition, 232 reflections of PBS cube become the yellow with S polarization direction in the beam split to become beam split (Ye-s) by the yellow that polarized condition adjustment element 35Ye penetrates.On the other hand, PBS cube 232 will be adjusted yellow that element 35Ye penetrates by polarized condition and become the yellow with P polarization direction in the beam split to become beam split (Ye-p) to see through and import liquid crystal panel 35G side.PBS cube 232 will be become the yellow with S polarization direction in the beam split to become beam split (Ye-s) reflection and import PBS cube 234 sides by the yellow of liquid crystal panel 35G reflection.
In addition, PBS cube 233 blueness that will have a S polarization direction becomes beam split (B-s) reflection and imports liquid crystal panel 35B side.PBS cube 233 will be become the blueness with P polarization direction in the beam split to become beam split (B-p) to see through by the blueness of liquid crystal panel 35B reflection and import PBS cube 234 sides.
Arrowband phasic difference plate 237 only makes special color become the polarization direction rotation of beam split, and does not make the polarization direction rotation of other colour content light.For example, if with the polarization direction of each the colour content light situation consistent with the P polarization direction is example, arrowband phasic difference plate 237 makes and red become beam split and bluely become the polarization direction half-twist of beam split and see through, and makes the beam split of green one-tenth become the polarization direction of beam split not rotate with yellow and sees through.On the other hand, if with the polarization direction of each the colour content light situation consistent with the S polarization direction is example, arrowband phasic difference plate 237 makes and red become beam split and bluely become beam split not rotate and see through, and sees through after making the green polarization direction half-twist that becomes beam split and yellow to become beam split.
Arrowband phasic difference plate 238 only makes special color become the polarization direction rotation of beam split, and does not make the polarization direction rotation of other colour content light.Here, arrowband phasic difference plate 238 sees through after making the red polarization direction half-twist that becomes beam split, the blue polarization direction that becomes beam split is not rotated and sees through.
Arrowband phasic difference plate 239 only makes special color become the polarization direction rotation of beam split, and does not make the polarization direction rotation of other colour content light.Here, arrowband phasic difference plate 239 sees through after making the red polarization direction half-twist that becomes beam split, the blue polarization direction that becomes beam split is not rotated and sees through.
In addition, in the 3rd embodiment, PBS cube 232～PBS cube 234 constitutes the look synthetic portion that liquid crystal panel 35R, liquid crystal panel 35G and the emitted light of liquid crystal panel 35B are synthesized.
To have the light transmission of S polarisation in addition and interdict the Polarizer of light, also can be arranged on the light exit side of PBS cube 232 with P polarisation.To have the light transmission of P polarisation and interdict the Polarizer of light, also can be arranged on the light exit side of arrowband phasic difference plate 239 with S polarisation.
(effect and effect)
According to the projection type video display device of the 4th embodiment, even under the situation that adopts reflective liquid crystal panel (LCOS), also can access and the identical effect of above-mentioned the 1st embodiment.
In addition, under the situation of the light that utilizes 3 looks, owing to also need PBS cube 231～PBS cube 234, so, it should be noted, in the projection type video display device 100 of the 4th embodiment, identical to the distance (rear cut-off distance) the projecting lens unit 110 with the situation of the light that utilizes 3 looks from each liquid crystal panel 35.
(the 5th embodiment)
With reference to the accompanying drawings the 5th embodiment is described.Below mainly the difference of above-mentioned the 1st embodiment and the 5th embodiment is described.
Particularly, in above-mentioned embodiment 1, the polarized condition that yellow becomes the polarization direction of beam split to switch is adjusted element 30Ye, be arranged on the back segment that green is become the beam split element (catoptron 22) that beam split separates with red one-tenth.
With respect to this, in the 5th embodiment, the polarized condition that yellow becomes the polarization direction of beam split to switch is adjusted element 30Ye, be arranged on the leading portion that green is become the beam split element (catoptron 22) that beam split separates with red one-tenth.
(schematic configuration of lighting unit)
Schematic configuration to the lighting unit spare of the 5th embodiment describes with reference to the accompanying drawings.Figure 10 is the figure of the schematic configuration of expression the 5th embodiment lighting unit 120.It should be noted, in Figure 10, to giving same symbol with the same structure of above-mentioned Fig. 2.
In addition, it should be noted, identical with the 1st embodiment, in Figure 10, omitted the polarization direction of fly lens that makes the light uniformization that light source 10 sends and the light that light source 10 is sent PBS (polarization beam splitter) consistent etc. with a polarization direction (as the P polarization direction).
In addition, the situation that the polarization direction of the light that light source 10 sends is consistent with the S polarisation was described before the light that light source 10 sends is separated into each colour content light among Figure 10.
As shown in figure 10, lighting unit 120 has light source 10, a plurality of liquid crystal panel 30 (liquid crystal panel 30R, liquid crystal panel 30G and liquid crystal panel 30B), polarized condition adjustment element 37Ye, a plurality of cruciform dichroic cube 50 and a plurality of reflector group (catoptron 321～catoptron 322, catoptron 331～catoptron 333).
Polarized condition adjustment element 37Ye is arranged on by between the catoptron 321 and catoptron 332 on the light path of the synthetic light of catoptron 321 reflections.As shown in Figure 1, polarized condition is adjusted element 37Ye and is constituted only yellow in the synthetic light that can be reflected catoptron 321 and become the polarized condition of beam split to adjust.In Figure 11, the longitudinal axis is the ratio (transmitance) that the uncomfortable polarized condition that is integrated into light sees through synthetic light, and transverse axis is synthetic light wavelength.
As shown in figure 11, adjust on the element 37Ye in polarized condition and not apply under the state of voltage, polarized condition adjusts that element 37Ye is uncomfortable to be integrated into the polarized condition of light and to see through synthetic light.That is, polarized condition adjustment element 37Ye will comprise that the beam split of red one-tenth, the beam split of green one-tenth and yellow become the synthetic light of beam split to see through with the S polarisation.
On the other hand, be applied with under the state of voltage on polarized condition adjustment element 37Ye, polarized condition adjustment element 37Ye only adjusts the polarized condition of yellow one-tenth beam split and sees through and synthesizes light.That is, polarized condition is adjusted element 37Ye and is become beam split and the beam split of green one-tenth to see through with the S polarisation redness, and becomes beam split to see through with the P polarisation yellow.
At this, as shown in figure 12, the cutoff wavelength of catoptron 322 is located between green composition light wavelength band and the red composition light wavelength band.In addition, the cutoff wavelength of catoptron 322 along with the difference of the polarization direction of the light that is incident to catoptron 322 difference.
Particularly, be under the situation of P polarisation at the polarization direction of the light that is incident to catoptron 322, the cutoff wavelength of catoptron 322 is the wavelength of the boundary vicinity of green composition light wavelength band and yellow composition light wavelength band.On the other hand, be under the situation of S polarisation at the polarisation of light light direction that is incident to catoptron 322, the cutoff wavelength of catoptron 322 is the wavelength of the boundary vicinity of yellow composition light wavelength band and red composition light wavelength band.
Become the polarized condition of beam split not adjusted element 37Ye by polarized condition in yellow and adjust, the yellow of S polarisation becomes beam split to be incident under the situation of catoptron 322, and the beam split of yellow one-tenth is by catoptron 322 reflections and be imported into liquid crystal panel 30G side.
On the other hand, the polarized condition that becomes beam split in yellow is adjusted element 37Ye by polarized condition and is adjusted, and the yellow of P polarisation becomes beam split to be incident under the situation of catoptron 322, yellow composition light transmission catoptron 322 and be imported into liquid crystal panel 30R side.
Here, the yellow of importing liquid crystal panel 30R side becomes the polarization direction (P polarisation) of beam split to become polarization direction (S polarisation) difference of beam split with the redness that imports liquid crystal panel 30R side.Therefore, the yellow of the P polarisation of importing liquid crystal panel 30R side becomes the Polarizer 31R blocking of beam split by the light incident side that is arranged at liquid crystal panel 30R.
Like this, even polarized condition is adjusted the configuration change of element 37Ye, also can switch the ON/OFF state of yellow one-tenth beam split at an easy rate.
(the 6th embodiment)
With reference to the accompanying drawings the 6th embodiment is described.In the 6th embodiment, the structure of above-mentioned liquid crystal panel 30 is carried out auspicious stating.
(structure of optical modulation element)
Structure to the optical modulation element in the 6th embodiment describes with reference to the accompanying drawings.Figure 13 is the figure of the structure of the liquid crystal panel 30 (particularly adjusting element 30Ye etc. for polarized condition) in expression the 6th embodiment.And Figure 13 is the figure of the liquid crystal panel 30 watched from light entrance face (or light-emitting face) side of liquid crystal panel 30.
As shown in figure 13, liquid crystal panel 30 has a plurality of sections (セ グ メ Application ト) 431 and a plurality of transparency electrode 432.
In the zone of the first half of being located at liquid crystal panel 30 (regional A and area B), along with becoming, the position of section 431 goes up direction, and the area of section 431 diminishes.On the other hand, in the zone of the latter half of being located at liquid crystal panel 30 (zone C and region D), along with the position of section 431 becomes direction down, the area of section 431 diminishes.
On the other hand, in the zone of the left-half that is arranged on liquid crystal panel 30 (regional A and region D), transparency electrode 432 is arranged on the left side of each section 431.In the zone of the right half part that is arranged on liquid crystal panel 30 (area B and zone C), transparency electrode 432 is arranged on the right side of each section 431.
At this, being example with section 431-1～section 431-4 is described in detail the structure of each section 431.
The area of the section 431-2 of the upside of the section of being located at 431-1 is than the width extent of the little transparency electrode 432-1 that is connected with section 431-1 of area of section 431-1.
The area of the section 431-3 of the section of being located at 431-2 upside is than the width extent of the also little transparency electrode 432-2 that is connected with section 431-2 of area of section 431-2.That is, the area of section 431-3 is than the little transparency electrode 432-1 of area of section 431-1 and the width extent of transparency electrode 432-2.
The area of the section 431-4 of the section of being located at 431-3 upside is than the width extent of the little transparency electrode 432-3 that is connected with section 431-3 of area of section 431-3.That is, the area of section 431-4 is than the width extent of the little transparency electrode 432-1 of area～transparency electrode 432-3 of section 431-1.
In the zone (regional A and area B) that the first half of liquid crystal panel 30 is provided with, transparency electrode 432 connects with the FPC (Flexible Printed Circuit, not shown) that is located at liquid crystal panel 30 upsides.In the zone (zone C and region D) that the latter half of liquid crystal panel 30 is provided with, transparency electrode 432 is connected with the FPC that is located at liquid crystal panel 30 downsides (not shown).
In the 6th embodiment,, be not limited thereto although the situation up and down that FPC is located at liquid crystal panel 30 has been carried out illustration.Particularly, FPC also can be arranged at liquid crystal panel 30 about.Certainly, as long as make structure half-twist shown in Figure 13 this moment.
(effect and effect)
By adopting transparency electrode 432, can suppress the reduction of the caused smooth utilization ratio of electrode as the electrode that is connected with each section 431.
By FPC is located at liquid crystal panel 30 about because the length of transparency electrode 432 shortens, thereby can reduce the resistance of transparency electrode 432, can make the narrowed width of transparency electrode 432.
[utilization of yellow one-tenth beam split]
Become the utilization of beam split to describe to yellow with reference to the accompanying drawings.The figure of Figure 14 for being used for the light that above-mentioned light source 10 (UHP lamp) sends is described.Wherein, the energy of the light that is sent by light source 10 and the product of luminescence efficiency (luminous efficient) are derived light quantity.
As shown in figure 14, luminescence efficiency is a peak value to be equivalent to green composition light wavelength band, has the trend that reduces more towards short wavelength's (beam split of blue one-tenth) side and long wavelength (redness becomes beam split) side more.Therefore, even near near near the energy of the light that is sent from the light source as the UHP lamp 10 (beam split of yellow one-tenth) (green become beam split), 580nm (blue become beam split), the 550nm 440nm has peak value in order, but the light quantity that light source 10 sends maximum in being equivalent to green composition light wavelength band.In addition, the light quantity that light source 10 sends inferior to being equivalent to green composition light wavelength band, is being equivalent to yellow composition light wavelength band for inferior big.
Like this, the energy of the light that sends from light source 10 and the aspect of luminescence efficiency yellowly as can be known become beam split very big to the contribution of image light quantity.
Therefore, proposed according to the projection type video display device that utilizes the yellow of not utilized in the prior art to become the mode of beam split to constitute.For example, proposed not use and be used to interdict yellow projection type video display device (for example the spy opens the 2000-137289 communique), the 4 board-like projection type video display devices (opening the 2002-287247 communique) that become the color filter of beam split as the spy.
For the respective embodiments described above, not only yellow become beam split to realize luminance brightnessization by utilizing, and by utilizing polarized condition to adjust the reduction that element 30Ye suppresses color reproduction.Become beam split to be irradiated to other liquid crystal panel 30 because polarized condition is adjusted the emitted yellow of element 30Ye in addition, thus the rear cut-off distance of projecting lens unit 110 compare with prior art do not have elongated.
(other embodiments)
The present invention is illustrated by above-mentioned embodiment, but as the argumentation and the accompanying drawing of the part of the disclosure and should not be construed restriction content of the present invention.Will know various replacement embodiments, embodiment and application technology according to the disclosure those skilled in the art.
For example, in the above-described embodiment, be the beam split of green one-tenth although be superimposed on the beam split that is superimposed as of yellow one-tenth beam split, be not limited only to this.The beam split that is superimposed as that is superimposed on the beam split of yellow one-tenth also can be the beam split of red one-tenth.At this moment, the beam split of red one-tenth becomes beam split to be incident to together among the polarized condition adjustment element 30Ye with yellow.Wherein, it should be noted, because yellow is blue complementary color, so the beam split that is superimposed as that is superimposed among the beam split of yellow one-tenth preferably is not that blueness becomes beam split.
In the above-described embodiment, although the 4th colour content light is the beam split of yellow one-tenth, be not limited only to this.The 4th colour content light can be that cyan becomes beam split, magenta to become beam split etc.Particularly, preferably being superimposed on cyan becomes the beam split that is superimposed as of beam split to be beam split of green one-tenth or the beam split of blue one-tenth.Being superimposed on magenta becomes the beam split that is superimposed as of beam split to be preferably beam split of red one-tenth or the beam split of blue one-tenth.
In the above-described embodiment, although the 4th colour content light is single colour content light, be not limited only to this.The 4th colour content light also can be a plurality of colour content light.
In the above-described embodiment, although be to adjust element with polarized condition to adjust element 30Ye as prerequisite, be not limited only to this for the polarized condition that does not have resolution.Particularly, polarized condition adjustment element can be the 4th a look liquid crystal panel with resolution.At this moment, because the transmitance that electrode etc. cause reduces, preferably the resolution than liquid crystal panel 30R, liquid crystal panel 30G and liquid crystal panel 30B is lower for the resolution of the 4th look usefulness liquid crystal panel in order to prevent.But should be noted that the 4th look also can equate with the resolution of liquid crystal panel 30R, liquid crystal panel 30G and liquid crystal panel 30B with the resolution of liquid crystal panel.
Claims (6)
1. lighting device that is used for projection type video display device, comprise: with input signal redness is become red modulation element that beam split modulates, green become green glow modulator element that beam split modulates, blueness become blue light modulator element that beam split modulates and the polarized condition that the polarized condition of the 4th colour content light is modulated is adjusted element with input signal according to blueness with input signal according to green according to redness
This lighting device also has: the look that the light that penetrates from above-mentioned red modulation element, above-mentioned green glow modulator element and above-mentioned blue light modulator element is synthesized synthesizes portion,
The beam split of above-mentioned red one-tenth, the beam split of above-mentioned green one-tenth and above-mentioned blueness become any the colour content light in the beam split promptly to be superimposed as beam split, are incident to above-mentioned polarized condition adjustment element with above-mentioned the 4th colour content light,
Above-mentioned polarized condition is adjusted element, do not adjust above-mentionedly to be superimposed as the polarized condition of beam split and, to see through after the polarized condition adjustment with above-mentioned the 4th colour content light with the above-mentioned branch light transmission that is superimposed as,
Adjust above-mentioned beam split and above-mentioned the 4th colour content light of being superimposed as that element penetrates from above-mentioned polarized condition, inciding in above-mentioned red modulation element, above-mentioned green glow modulator element and the above-mentioned blue light modulator element is specific optical modulation element corresponding to the above-mentioned optical modulation element that is superimposed as beam split.
2. lighting device as claimed in claim 1 is characterized in that,
Above-mentioned polarized condition adjust element to the polarization direction of above-mentioned the 4th colour content light is not rotated or make above-mentioned the 4th colour content light polarization direction rotation roughly 90 ° carry out selectivity and switch.
3. lighting device as claimed in claim 1 is characterized in that,
The resolution that above-mentioned polarized condition is adjusted element is lower than the resolution of above-mentioned red modulation element, above-mentioned green glow modulator element and above-mentioned blue light modulator element.
4. lighting device as claimed in claim 1 is characterized in that,
Also comprise: based on above-mentioned red with input signal, above-mentioned green with input signal and above-mentioned blueness input signal, control the modulation voltage control part of modulation voltage of adjusting the polarized condition of above-mentioned the 4th colour content light by above-mentioned polarized condition adjustment element.
5. lighting device as claimed in claim 1 is characterized in that,
Above-mentioned specific light modulator element has the light incident side Polarizer of being located at light incident side and the exiting side Polarizer of being located at light exit side,
Above-mentioned light incident side Polarizer interdicts above-mentioned the 4th colour content light when above-mentioned the 4th colour content light does not inject to above-mentioned look synthetic portion side,
Above-mentioned exiting side Polarizer interdicts the above-mentioned beam split that is superimposed as above-mentioned being superimposed as when beam split does not inject to above-mentioned look synthetic portion side.
6. projection type video display device, comprise: send the beam split of red one-tenth and become beam split to become the light source of beam split and the 4th colour content light with blueness with green, according to redness with input signal to the above-mentioned red red modulation element that becomes beam split to modulate, according to green with input signal to the above-mentioned green green glow modulator element that becomes beam split to modulate, according to blueness with input signal to the above-mentioned blue blue light modulator element that becomes beam split to modulate, reach the polarized condition that the polarized condition of above-mentioned the 4th colour content light is modulated and adjust element
This projection type video display device also has:
To the synthetic portion of the look that synthesizes from above-mentioned red modulation element, above-mentioned green glow modulator element and the emitted light of above-mentioned blue light modulator element; With
The projector equipment that the light that above-mentioned look synthetic portion is synthesized carries out projection,
Become any the colour content light in the beam split promptly to be superimposed as beam split in the beam split of above-mentioned red one-tenth, the beam split of above-mentioned green one-tenth and above-mentioned blueness, be incident to above-mentioned polarized condition adjustment element with above-mentioned the 4th colour content light,
Above-mentioned polarized condition is adjusted element, do not adjust above-mentionedly to be superimposed as the polarized condition of beam split and, to see through after the polarized condition adjustment with above-mentioned the 4th colour content light with the above-mentioned branch light transmission that is superimposed as,
Adjust above-mentioned beam split and above-mentioned the 4th colour content light of being superimposed as that element penetrates from above-mentioned polarized condition, incide in above-mentioned red modulation element, above-mentioned green glow modulator element and the above-mentioned blue light modulator element corresponding to the above-mentioned optical modulation element that is superimposed as beam split.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-296282 | 2006-10-31 | ||
| JP2006296282 | 2006-10-31 | ||
| JP2006296282 | 2006-10-31 | ||
| JP2007249576 | 2007-09-26 | ||
| JP2007249576A JP4286306B2 (en) | 2006-10-31 | 2007-09-26 | Illumination device and projection display device |
| JP2007-249576 | 2007-09-26 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101290126A Division CN101806993B (en) | 2006-10-31 | 2007-10-24 | Illumination apparatus and projection display device |
| CN2010102436977A Division CN101916033B (en) | 2006-10-31 | 2007-10-24 | Projection type video display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101191987A CN101191987A (en) | 2008-06-04 |
| CN101191987B true CN101191987B (en) | 2010-08-04 |
Family
ID=39487055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101944388A Active CN101191987B (en) | 2006-10-31 | 2007-10-24 | Illumination apparatus and projection image display device |
Country Status (2)
| Country | Link |
|---|---|
| JP (4) | JP4354007B2 (en) |
| CN (1) | CN101191987B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5156550B2 (en) * | 2008-09-04 | 2013-03-06 | 三洋電機株式会社 | Projection display device |
| JP7133390B2 (en) | 2018-08-16 | 2022-09-08 | オリエンタル酵母工業株式会社 | packaging bag |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6593985B1 (en) * | 1999-09-30 | 2003-07-15 | Kabushiki Kaisha Toshiba | Color shutter and color image display apparatus |
| CN1459661A (en) * | 2002-05-20 | 2003-12-03 | 伊斯曼柯达公司 | Method and apparatus for increasing colour gamut of display device |
| WO2006056995A2 (en) * | 2004-11-29 | 2006-06-01 | Genoa Color Technologies Ltd | Multi-primary color display |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6183091B1 (en) * | 1995-04-07 | 2001-02-06 | Colorlink, Inc. | Color imaging systems and methods |
| JP2000199883A (en) * | 1998-10-29 | 2000-07-18 | Fujitsu Ltd | Reflection type projector device |
| US6309071B1 (en) * | 1999-08-04 | 2001-10-30 | Sharp Laboratories Of America, Inc. | Liquid crystal projection display system |
| JP2001092419A (en) * | 1999-09-22 | 2001-04-06 | Canon Inc | Display device |
| JP2001174774A (en) * | 1999-12-20 | 2001-06-29 | Fujitsu General Ltd | Liquid crystal projector device |
| JP2002287247A (en) * | 2001-03-28 | 2002-10-03 | Seiko Epson Corp | Color separating/synthesizing optical system and projector |
| JP4193369B2 (en) * | 2001-04-09 | 2008-12-10 | セイコーエプソン株式会社 | Color separation device, color composition device, color separation composition device, and projector |
| JP4167452B2 (en) * | 2001-12-28 | 2008-10-15 | 株式会社リコー | Image display device |
| JP2004117388A (en) * | 2002-09-20 | 2004-04-15 | Ricoh Co Ltd | Video projection device |
| JP2004341227A (en) * | 2003-05-15 | 2004-12-02 | Fuji Photo Optical Co Ltd | Liquid crystal projector |
| JP2005099546A (en) * | 2003-09-26 | 2005-04-14 | Fujitsu General Ltd | Projection type image display device |
| JP4527420B2 (en) * | 2004-03-12 | 2010-08-18 | Ｎｅｃディスプレイソリューションズ株式会社 | Projector device |
| US20060197914A1 (en) * | 2005-03-04 | 2006-09-07 | Colorlink, Inc. | Four panel projection system |
| JP4286306B2 (en) * | 2006-10-31 | 2009-06-24 | 三洋電機株式会社 | Illumination device and projection display device |
-
2007
- 2007-10-24 CN CN2007101944388A patent/CN101191987B/en active Active
-
2009
- 2009-01-30 JP JP2009019557A patent/JP4354007B2/en active Active
- 2009-03-23 JP JP2009070655A patent/JP2009134323A/en active Pending
-
2011
- 2011-07-28 JP JP2011165362A patent/JP5044713B2/en active Active
- 2011-10-21 JP JP2011231488A patent/JP5124679B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6593985B1 (en) * | 1999-09-30 | 2003-07-15 | Kabushiki Kaisha Toshiba | Color shutter and color image display apparatus |
| CN1459661A (en) * | 2002-05-20 | 2003-12-03 | 伊斯曼柯达公司 | Method and apparatus for increasing colour gamut of display device |
| WO2006056995A2 (en) * | 2004-11-29 | 2006-06-01 | Genoa Color Technologies Ltd | Multi-primary color display |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012003274A (en) | 2012-01-05 |
| JP4354007B2 (en) | 2009-10-28 |
| JP2009175741A (en) | 2009-08-06 |
| JP5124679B2 (en) | 2013-01-23 |
| JP5044713B2 (en) | 2012-10-10 |
| JP2009134323A (en) | 2009-06-18 |
| JP2012068648A (en) | 2012-04-05 |
| CN101191987A (en) | 2008-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101916033B (en) | Projection type video display device | |
| JP6556880B2 (en) | Local dimming of laser light sources for projectors and other light emitting devices including cinema, entertainment systems, displays | |
| KR101405026B1 (en) | High dynamic range projection system | |
| CN100422850C (en) | Illuminating apparatus and projector display device | |
| US8979272B2 (en) | Multi-primary color display | |
| US7237909B2 (en) | Optical member, illuminating device, and projection type video display | |
| US20160300535A1 (en) | Laser diode driven lcd quantum dot hybrid displays | |
| JP2001249400A (en) | Projection-type display apparatus | |
| CN101191987B (en) | Illumination apparatus and projection image display device | |
| CN105988272B (en) | Optical projection system and its control method | |
| CN100588265C (en) | Discrete high switching rate illumination geometry structure for single imager microdisplay | |
| CN1928626B (en) | Optical element, illuminating device, and projection type video display | |
| CN106597790B (en) | A kind of laser-projector display device | |
| EP3689677A1 (en) | Lighting device and method for illumination | |
| HRP20100599A2 (en) | System for displaying 3d coloured image | |
| KR20110077847A (en) | A 3d lcos optical engine using 4 panel | |
| KR20110077845A (en) | A lcos optical engine using 2 panel and 3d optical engine using thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |