CN109298523A - The light-source system of colour wheel and the application colour wheel, optical projection system - Google Patents
The light-source system of colour wheel and the application colour wheel, optical projection system Download PDFInfo
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- CN109298523A CN109298523A CN201710612351.1A CN201710612351A CN109298523A CN 109298523 A CN109298523 A CN 109298523A CN 201710612351 A CN201710612351 A CN 201710612351A CN 109298523 A CN109298523 A CN 109298523A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 60
- 239000011248 coating agent Substances 0.000 claims abstract description 59
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 54
- 239000011521 glass Substances 0.000 claims description 42
- 238000009738 saturating Methods 0.000 claims description 34
- 239000012528 membrane Substances 0.000 claims description 32
- 239000005357 flat glass Substances 0.000 claims description 18
- 229910052594 sapphire Inorganic materials 0.000 claims description 18
- 239000010980 sapphire Substances 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000004020 luminiscence type Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- 239000012790 adhesive layer Substances 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 241000790917 Dioxys <bee> Species 0.000 claims 1
- 229910003978 SiClx Inorganic materials 0.000 claims 1
- 239000003086 colorant Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 12
- 241001062009 Indigofera Species 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 241000446313 Lamella Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910002114 biscuit porcelain Inorganic materials 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910021426 porous silicon Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
- G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
Abstract
The present invention relates to a kind of colour wheel and the light-source systems and optical projection system of the application colour wheel, the colour wheel includes the preceding substrate and metacoxal plate allowed light through, and sequence is placed in the spectro-film between preceding substrate and metacoxal plate, first low-index layer, fluorescent film, 2nd index layer and filter coating, spectro-film transmits the second light of the first light and reflection, spectro-film includes at least one first coloured light area, first coloured light area absorbs the first light to generate the second light, filter coating includes the corresponding first coloured light area of at least one first transparent area, first transparent area allows the second light or the third light separated by the second light to pass through and reflect other light.Using the present invention, the efficiency of light energy utilization is high.
Description
Technical field
The present invention relates to the light-source systems of field of projection display more particularly to a kind of colour wheel and the application colour wheel, projection
System.
Background technique
Refering to Figure 1, being a kind of schematic diagram of a layer structure of colour wheel in the prior art.The colour wheel includes a glass
Lamella 11, a fluorescence coating 12 and a filter layer 13.Wherein fluorescence coating 12 is coated on a surface of glass stratum 11, is filtered
Lamella 13 is set on fluorescence coating 12.Exciting light penetrates glass stratum 11 and reaches fluorescence coating 12, and fluorescence coating 12 absorbs exciting light simultaneously
Generating stimulated light can be emitted since stimulated light follows lambertian distribution towards surrounding, therefore in addition to a part of transmission filter layer
Outside, another part stimulated light can be emitted from the incident side of exciting light, to cause to be excited light loss, cause light utilization efficiency low.
Summary of the invention
In view of the above situation, the present invention provides a kind of colour wheel that the efficiency of light energy utilization is high, light-source system and optical projection system.
On the one hand, the present invention provides a kind of colour wheel, the colour wheel include the preceding substrate allowed light through and metacoxal plate and
Sequence be placed in spectro-film between the preceding substrate and metacoxal plate, the first low-index layer, fluorescent film, the 2nd index layer and
Filter coating, the spectro-film transmit the second light of the first light and reflection, and the fluorescent film includes at least one first coloured light area, and described the
A shade area absorbs the first light to generate the second light, and the filter coating includes that at least one first transparent area corresponds to first coloured light
Area, first transparent area allow the second light or the third light separated by the second light to pass through and reflect other light, wherein not by institute
State the first coloured light area absorption the first light at least partly by first transparent area reflection, via second low-index layer into
Enter first coloured light area, absorbed by first coloured light area and generates the second light, the second light quilt generated again again
The spectro-film reflection enters first coloured light area via first low-index layer, then via first coloured light area
First transparent area is reached with second low-index layer, and first transparent area transmits second light or by the second light
In separate third light and transmit the third light.
On the other hand, the present invention also provides a kind of light-source system, the light-source system includes luminescence unit and above-mentioned color
Wheel, the monochromatic light that the luminescence unit issues are converted into polychromatic light outgoing by the colour wheel.
In another aspect, the present invention also provides a kind of optical projection system, the optical projection system include above-mentioned light-source system and
Spatial light modulator and projection lens, the polychromatic light being emitted from the light-source system is modulated into via the spatial light modulator to be taken
Image light with image information, described image light are emitted to a screen via the projection lens.
The advantages of colour wheel provided in an embodiment of the present invention, light-source system and optical projection system, is: due to being arranged inside colour wheel
Spectro-film and low-index layer is provided between fluorescent film and spectro-film and filter coating, thus make by fluorescent film and not
It is reflected by the first luminous energy that fluorescent film absorbs by filter coating, again passes by fluorescent film and be absorbed and generate second again
Light, the second light generated again the film that can at least partly be split are reflected back fluorescent film, and pass through fluorescent film and filter coating is emitted, or
Person separates third light by the second light generated again, and third light is emitted via filter coating, therefore, improves light utilization efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of color wheel in the prior art.
Fig. 2 is the structural schematic diagram of the colour wheel of one embodiment of the present invention.
Fig. 3 is the sector division schematic diagram of fluorescent film in colour wheel shown in Fig. 2.
Fig. 4 is the sector division schematic diagram of filter coating in colour wheel shown in Fig. 2.
Fig. 5 is that stimulated light is emitted schematic diagram when fluorescent film and filter coating directly fit.
Stimulated light is emitted schematic diagram when Fig. 6 is fluorescent film and blue anti-yellow membrane directly fits thoroughly.
Fig. 7 is the block diagram of the light-source system in one embodiment of the present invention.
Fig. 8 is the block diagram of the optical projection system in one embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein " and/or " it include one or more relevant institute's lists
Any and all combinations of purpose.
It please refers to shown in Fig. 2, is a kind of structural schematic diagram of embodiment of colour wheel of the present invention.The colour wheel 2 is from front
(not shown) substantially in the form of annular discs is seen with the back side, is set to positive sapphire sheet 21 and one including one and is set to the glass at the back side
Piece 22.From the side, it is spaced apart between the sapphire sheet 21 and sheet glass 22.In the intermediate region of colour wheel 2, sapphire sheet
Adhesive layer 23 is set between 21 and sheet glass 22, is adhesively fixed between sapphire sheet 21 and glass stratum 22 by adhesive layer 23.
In the neighboring area of colour wheel 2, sapphire sheet 21 is provided with an anti-reflection film 24, sapphire sheet 21 and glass away from the side of sheet glass 22
A saturating blue anti-yellow membrane 25, a fluorescent film 26 and a filter coating 27 have been set gradually between glass piece 22.Wherein anti-reflection film 24, saturating indigo plant are anti-
Yellow membrane 25, fluorescent film 26 and filter coating 27 are substantially annular in shape, so that it can be circumferentially positioned at 2 neighboring area of colour wheel,
Blue anti-yellow membrane 25 is stacked and placed in sapphire sheet 21 thoroughly, and filter coating 27 is stacked and placed on sheet glass 22, fluorescent film 26 and thoroughly blue anti-yellow membrane
25, it is spaced apart between filter coating 27, in the present embodiment, between fluorescent film 26 and saturating blue anti-yellow membrane 25, filter coating 27
Substantially separate 10 μm, be respectively provided between blue anti-yellow membrane 25, filter coating 27 in fluorescent film 26 and thoroughly dry glass frit layer 28,
29, also substantially 10 μm of the thickness of each dry glass frit layer 28,29, to make sapphire sheet 21 and sheet glass 22 to fluorescent film 26
Physically play support or clamping action.
It in the present embodiment, include resin and glue in fluorescent film 26, therefore dry glass frit layer 28,29 can pass through spraying
It is adsorbed in 26 two sides of fluorescent film respectively, to play certain induration to fluorescent film.
In the present embodiment, substantially 100 μm of the thickness of fluorescent film 26.
It please refers to shown in Fig. 3, fluorescent film 26 has set gradually red light district 261, green Region 262, blue light along its circumferencial direction
Area 263 and yellow light area 264.Wherein red light district 261 is mixed to form with yellow light area 264 by resin, glue and yellow fluorescent powder, green light
Area 262 is mixed to form by resin, glue and green emitting phosphor, and blue light region is mixed to form by resin, glue and scattering powder.In this reality
It applies in mode, central angle corresponding to red light district 261, green Region 262, blue light region 263 and yellow light area 264 is respectively 115 degree, 92
Degree, 70 degree, 83 degree.
It please refers to shown in Fig. 4, red light district 261, green Region 262, blue light region 263 and yellow light area 264 on corresponding fluorescent film 26
Setting, filter coating 27 set gradually saturating red light district 271, saturating green Region 272, anti-reflection area 273 and thoroughly yellow along its circumferencial direction
Light area 274, in the present embodiment, saturating red light district 271 is provided with saturating feux rouges film, saturating green Region 272 is provided with the light film that reveals the green, increases
Saturating area 273 is provided with anti-reflection film, saturating yellow light area 274 is provided with saturating yellow light film.
In the present embodiment, since dry glass frit layer 28,29 is by the way that dry glass particle to be adsorbed on fluorescent film 26
It is formed, therefore there are air-gaps between dry glass frit layer 28 and saturating blue anti-yellow membrane 25, fluorescent film 26 and filter coating 27.Due to saturating
The presence of blue anti-yellow membrane 25 and air-gap, can be re-used and by the reflected light part of filter coating 27 finally through optical filtering
Film 27 and sheet glass 22 are emitted, to improve light utilization efficiency.Below with blue light, be specially blue laser light incident colour wheel 2, via colour wheel
Illustrate the optical effect of colour wheel 2 for 2 generation feux rouges.
Exciting light blue light successively transmits anti-reflection film 24, sapphire sheet 21, thoroughly blue anti-yellow membrane 25, and passes through air-gap and dry glass
Glass bisque 28 exposes to fluorescent film 26, and the yellow fluorescent powder in 26 red light district 261 of fluorescent film is excited to generate stimulated light yellow light.From
The yellow light that fluorescent film 26 is emitted is at least partially through the saturating red light district for exposing to filter coating 27 after air-gap and dry glass frit layer 29
271, yellow light is divided into feux rouges and green light, wherein further transmissive glass piece 22 and is emitted, green light after red transmission filter coating 27
And unabsorbed blue light is reflected by the saturating red light district 271 of filter coating 27.The blue light reflected is after fluorescent film 26, excitation
Fluorescent film 26 generates yellow light again, and the yellow light generated again exposes to blue anti-yellow after overdrying glass frit layer 28 and air-gap
Film 25, after blue anti-yellow membrane 25 reflects thoroughly, then via dry glass frit layer 28, fluorescent film 26 and dry glass frit layer 29, at least portion
Lease making is emitted by the saturating red light district 271 and sheet glass 22 of filter coating 27, to improve the feux rouges brightness of outgoing, is improved light and is utilized
Rate.
In the above-described embodiment, doing between glass frit layer 29 and fluorescent film 26 and filter coating 27 is not to paste completely
It closes.Between dry glass frit layer 29 and fluorescent film 26, have between some dry glass particles and fluorescent film 26 in dry glass frit layer 29
Fitting contact, and other than the region that these dry glass particles are contacted with fluorescent film 26, do most of region of glass frit layer 29
Air-gap is formed between fluorescent film 26, due to both air (refractive index 1) and fluorescent film 26 (refractive index is 1.5~1.8)
Refractive index farther out, therefore the light of large angle incidence meeting when reaching the junctional interfaces of fluorescent film 26 and dry glass frit layer 29
It is totally reflected.Similarly, it does and forms air-gap between the most of region and filter coating 27 of glass frit layer 29, due to air and filter
The refractive index of both light films 27 farther out, therefore reaches filter coating 27 and dry glass frit layer 29 in the light of large angle incidence
It can be totally reflected when junctional interfaces.Fluorescent film 26 and filter coating 27 are directly fitted in this way, avoiding, due to fluorescent film 26 with
Both filter coatings 27 refractive index close and allow incident light to pass through filter coating 27 and sheet glass 22 is emitted, so as to make not by fluorescent film
26 blue light components absorbed reflex to fluorescent film 26 by filter coating 27, and are absorbed by fluorescent film 26 and generate yellow light again.It please join
It reads shown in Fig. 5, if not plus doing glass frit layer 29 between fluorescent film 26 and filter coating 27 and directly fitting, is emitted feux rouges in colour wheel 2
Period, green light or filter coating 27 can not penetrated by the blue light that fluorescent film 26 absorbs and be further transmitted through sheet glass 22, at least portion
Green light or blue light is divided to be emitted from the periphery of sheet glass 22, so that the effect of reflection blue light and green light be not achieved.And if in glass
Anti-reflection film is arranged far from the side of filter coating 27 in piece 22, then but will cause some blue light and green light from sheet glass 22 far from filter coating
The outgoing of 27 sides, is also not achieved the effect of reflection blue light and green light.
Similarly, dry glass frit layer 28 is set between blue anti-yellow membrane 25 in fluorescent film 26 and thoroughly, due to air and fluorescent film 26
And the refractive index between saturating blue anti-yellow membrane 25 is farther out, therefore avoids and directly paste the anti-yellow membrane 25 of saturating indigo plant with fluorescent film 26
It closes, allows incident light to pass through blue anti-yellow membrane 25 thoroughly due to the two refractive index close and be emitted with sapphire sheet 21, so as to make fluorescence
The yellow light that film 26 generates again can be reflected by saturating blue anti-yellow membrane 25 and is finally emitted from filter coating 27, to improve light utilization efficiency.Please
As shown in fig.6, if between fluorescent film 26 and thoroughly blue anti-yellow membrane 25 not set dry glass frit layer 28 and directly fit, in sapphire
In the case that piece 21 is far from the blue anti-not set anti-reflection film 24 in 25 side of yellow membrane thoroughly, some yellow light goes out from the periphery of sapphire sheet 21
It penetrates and loses.In the case where sapphire sheet 21 is far from blue anti-25 side of yellow membrane setting anti-reflection film 24 thoroughly, at least partly yellow light
Anti-reflection film 24 can be penetrated further into and lost.And sapphire sheet 21 and the thoroughly position of blue anti-yellow membrane 25 are exchanged, based on same
Principle, stimulated light can equally lose.
Therefore, in the dry glass frit layer 28,29 of 26 two sides of fluorescent film setting low-refraction, conducive to not absorbed by fluorescent film 26
Blue light can be reflected back toward fluorescent film 26 again, so that fluorescent film 26 is generated yellow light again, the yellow light generated again is at least partly
It can be reflected and be emitted feux rouges eventually by filter coating 27 and sheet glass 22, to improve feux rouges brightness, promote light utilization efficiency.
On the other hand, since fluorescent film 26 and the refractive index of air-gap are larger, what is generated inside fluorescent film 26 is glimmering
When light is emitted to junctional interfaces of the fluorescent film 26 with air-gap with wide-angle, fluorescence can reflect, and the fluorescence of low-angle is then
It is emitted from fluorescent film 26, to make the fluorescence major part and exciting light incidence that are emitted from fluorescent film 26 close to 27 side of filter coating
Direction is roughly the same, and from fluorescent film 26 close to the most of side with exciting light incidence of fluorescence that blue anti-25 side of yellow membrane is emitted thoroughly
To substantially opposite, from fluorescent film 26 close to the fluorescence that blue anti-25 side of yellow membrane is emitted thoroughly through it is anti-it is blue after yellow membrane 25 reflects thoroughly it is further
It penetrates fluorescent film 26 and is emitted from fluorescent film 26 close to 27 side of filter coating.Therefore, the presence of air-gap facilitates more glimmering
Light from fluorescent film 26 close to 27 side of filter coating with exciting light incident direction substantially common direction be emitted, facilitate fluorescence
It collects, improves light utilization efficiency.
Similarly, the brightness of the green light and yellow light that are emitted can be improved by generating green light and yellow light via colour wheel 2 with blue light.
It is appreciated that in other embodiments, fluorescent film 26 can be by being sintered after fluorescent powder and glass powder mixing and
At fluorescent powder and glass powder mixed to be placed on a substrate being sintered, after sinter molding, then by substrate and fluorescent film 26
Separation.
It is appreciated that in other embodiments, blue anti-yellow membrane 25 can only allow the blue light of low-angle incidence to transmit thoroughly,
Such as only allow to transmit with blue anti-25 optical axis of yellow membrane thoroughly in the blue light within 0 to 20 degree.
It is appreciated that in other embodiments, doing glass frit layer 28 and 29 can also be with other low-index layer for example
Porous silicon dioxide layer substitution, the refractive index of low-index layer is below 1.3, it is preferred that below 1.2.
It is appreciated that in other embodiments, may also set up anti-reflection film far from the side of fluorescent film 26 in sheet glass 22.
It is appreciated that in other embodiments, the thickness of dry glass frit layer 28,29 is not limited to 10 μm, can for less than
50 μm of any values, preferably 10-15 μm.The thickness of fluorescent film 26 is also not necessarily limited to 100 μm, can be any value less than 200 μm.
It is appreciated that the center of circle corresponding to red light district 261, green Region 262, blue light region 263 and yellow light area 264 on fluorescent film 26
Angle number can be changed according to actual needs.
It is appreciated that fluorescent film 26 can only include that red light district 261, green Region 262 and blue light region 263 are accordingly filtered
It can also only include saturating red light district 271, saturating green Region 272 and anti-reflection area 273 on film 27.
In the above-described embodiment, the anti-yellow membrane 25 of the indigo plant transmits the first light (blue light) and reflects the second light (yellow light),
Therefore, blue light can enter fluorescent film 26 via the anti-yellow membrane 25 of saturating indigo plant, and fluorescent film 26 contains at least one the first coloured light area such as feux rouges
Area 261, green Region 262 and/or yellow light area 264, first coloured light area absorb the first light and generate the second light, the second light via
Filter coating 27 separates third light (feux rouges or green light) and transmits third light, alternatively, the second light is directly transmitted via filter coating 27, institute
Stating fluorescent film 26 may also include one second coloured light area such as blue light region, and second coloured light area allows the first light to be directed through fluorescent film
26 and finally via filter coating 27 transmit.Correspondingly, filter coating 27 contain at least one for example saturating red light district 271 of the first transparent area,
Saturating green Region 272 and/or thoroughly yellow light area 274 are allowed with the first coloured light area of the correspondence fluorescent film 26, first transparent area
Second light or third light penetrate and reflect other light, and therefore, the first light not absorbed by fluorescent film 26 can be anti-by the first transparent area
It is emitted back towards fluorescent film 26, is absorbed and generated again by fluorescent film 26 second light, and the second light generated again is emitted to blue anti-Huang
After film 25, finally transmitted from the first transparent area of filter coating 27 by the saturating blue anti-reflection of yellow membrane 25, via fluorescent film 26, alternatively, again
Second light of secondary generation by the first light transmission of filter coating 27 distinguishes third light and by third light transmission.Filter coating 27 may include
For one the second transparent area to correspond to the second coloured light area of fluorescent film 26, second transparent area allows the first light to penetrate.At other
In embodiment, blue anti-yellow membrane 25 can also be replaced being divided by a combined films thoroughly, for example, 2 incident blue light of colour wheel simultaneously
It is emitted feux rouges, green light, with the embodiment of blue light, saturating blue anti-yellow membrane 25 can be combined by blue anti-red film thoroughly, saturating blue anti-partial veil
It constitutes.In addition, in other embodiments, the first light is not limited to blue light, and the second light is not limited to yellow light, and third light is not yet
It is limited to feux rouges or green light, the difference of the first light, the second light and/or third light based on selection, blue anti-yellow membrane 25 can also be used thoroughly
Other spectro-films replace.
In embodiment of above, sapphire sheet 21 respectively constitutes the preceding substrate and metacoxal plate of colour wheel 2, color with sheet glass 22
The preceding substrate of wheel 2 can be quartz plate or sheet glass in other embodiments, and metacoxal plate also may be used in other embodiments
To be quartz plate or sapphire sheet.
It please refers to shown in Fig. 7, is the block diagram of a light-source system, the light-source system 100 includes colour wheel 2 and shines
Unit 3, the monochromatic light such as blue light issued from luminescence unit 3 are converted into polychromatic light by colour wheel 2, such as red, green, blue, yellow four coloured light.
It please refers to shown in Fig. 8, is the block diagram of an optical projection system, the optical projection system 200 includes light-source system
100, spatial light modulator 4 and projection lens 5.The polychromatic light being emitted from light-source system 100 is modulated into through spatial light modulator 4 to be taken
Image light with image information is finally emitted on screen via projection lens 5.
In conclusion colour wheel, light-source system and optical projection system that embodiment of the present invention provides, due to being arranged inside colour wheel
Spectro-film and low-index layer is provided between fluorescent film and spectro-film and filter coating, thus make by fluorescent film and not
It is reflected by the first luminous energy that fluorescent film absorbs by filter coating, again passes by fluorescent film and be absorbed and generate second again
Light, the second light generated again the film that can at least partly be split are reflected back fluorescent film, and pass through fluorescent film and filter coating is emitted, or
Person separates third light by the second light generated again, and third light is emitted via filter coating, therefore, improves light utilization efficiency.
Embodiment of above is only used to illustrate the technical scheme of the present invention and not to limit it, although referring to the above preferable embodiment party
Formula describes the invention in detail, those skilled in the art should understand that, it can be to technical solution of the present invention
It modifies or equivalent replacement should not all be detached from the spirit and scope of technical solution of the present invention.
Claims (17)
1. a kind of colour wheel, which is characterized in that the colour wheel includes that the preceding substrate allowed light through is placed in metacoxal plate and sequence
Spectro-film, the first low-index layer, fluorescent film, the 2nd index layer and filter coating between the preceding substrate and metacoxal plate,
The spectro-film transmits the second light of the first light and reflection, and the fluorescent film includes at least one first coloured light area, first coloured light
Area absorbs the first light to generate the second light, and the filter coating includes that at least one first transparent area corresponds to first coloured light area, institute
Stating the first transparent area allows the second light or the third light that is separated by the second light to pass through and reflect other light, wherein not by described the
The first light that a shade area absorbs at least partly enters institute by first transparent area reflection, via second low-index layer
The first coloured light area is stated, absorbed by first coloured light area and generates the second light again, second light reflected by the spectro-film,
Enter first coloured light area via first low-index layer, then via the refraction low with described second of first coloured light area
Rate layer reaches first transparent area, and first transparent area transmits second light or will separate third light and saturating in the second light
Penetrate the third light.
2. colour wheel as described in claim 1, which is characterized in that the fluorescent film includes one second coloured light area, second color
Light area transmits the first light, and the filter coating includes that one second transparent area corresponds to second coloured light area, and second coloured light area is saturating
Penetrate via second coloured light area transmitted through come the first light.
3. colour wheel as described in claim 1, which is characterized in that further include being set to the preceding substrate away from the spectro-film one
The anti-reflection film of side.
4. colour wheel as described in claim 1, which is characterized in that the spectro-film, the first low-index layer, fluorescent film, second
Index layer and filter coating are set to the neighboring area of the colour wheel.
5. colour wheel as claimed in claim 4, which is characterized in that the intermediate region of the colour wheel includes an adhesive layer, described viscous
Knot layer between the preceding substrate and metacoxal plate for will be adhesively fixed.
6. colour wheel as described in claim 1, which is characterized in that the preceding substrate be sapphire sheet, sheet glass or quartz plate,
And/or the metacoxal plate is sheet glass, quartz plate or sapphire sheet.
7. colour wheel as claimed in claim 2, which is characterized in that the spectro-film is a saturating blue anti-yellow membrane, and first light is
Blue light, the second light are yellow light.
8. colour wheel as claimed in claim 7, which is characterized in that the fluorescent film includes three the first coloured light areas, respectively red
Light area, green Region and yellow light area, the filter coating include three the first transparent areas, respectively saturating red light district, saturating green Region and thoroughly
Yellow light area, wherein the red light district corresponds to the red light district, the green Region corresponds to the green Region, the yellow light area
The corresponding yellow light area, second coloured light area are blue light region, and second transparent area is anti-reflection area, and the third light is feux rouges
Or green light.
9. colour wheel as claimed in claim 8, which is characterized in that yellow fluorescent powder is arranged in the red light district and yellow light area, described
Green emitting phosphor is arranged in green Region, and the blue light region setting scattering powder, saturating feux rouges film, the light that reveals the green is arranged in the red light district
The light film that reveals the green is arranged in area, and saturating yellow light film is arranged in the yellow light area, and anti-reflection film is arranged in the anti-reflection area.
10. colour wheel as described in claim 1, which is characterized in that the refractive index of first low-index layer is 1.3 or 1.2
Hereinafter, and/or, the refractive index of second low-index layer is 1.3 or 1.2 or less.
11. colour wheel as claimed in claim 10, which is characterized in that first low-index layer is dry glass frit layer or dioxy
SiClx layer, and/or, second low-index layer is dry glass frit layer or silicon dioxide layer.
12. colour wheel as claimed in claim 10, which is characterized in that the thickness of first low-index layer less than 50 μm or is
10-15 μm, and/or, the thickness of second low-index layer is less than 50 μm or is 10-15 μm.
13. colour wheel as claimed in claim 11, which is characterized in that the dry glass frit layer is by the way that dry glass particle to be adsorbed in
It is formed on the fluorescent film.
14. colour wheel as described in claim 1, which is characterized in that the fluorescent film with a thickness of less than 200 μm, alternatively, described
Fluorescent film with a thickness of 100 μm.
15. colour wheel as described in claim 1, which is characterized in that the spectro-film only allow with the spectro-film optical axis in 0 to
20 degree of the first light transmission.
16. a kind of light-source system, which is characterized in that including luminescence unit and such as the described in any item colors of claim 1-15
Wheel, the monochromatic light that the luminescence unit issues are converted into polychromatic light outgoing by the colour wheel.
17. a kind of optical projection system, which is characterized in that including light-source system as claimed in claim 16 and space light modulation
Device and projection lens, the polychromatic light being emitted from the light-source system are modulated into carrying image information via the spatial light modulator
Image light, described image light is emitted to a screen via the projection lens.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710612351.1A CN109298523A (en) | 2017-07-25 | 2017-07-25 | The light-source system of colour wheel and the application colour wheel, optical projection system |
| PCT/CN2017/114719 WO2019019517A1 (en) | 2017-07-25 | 2017-12-06 | Color wheel, and light source system and projection system employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710612351.1A CN109298523A (en) | 2017-07-25 | 2017-07-25 | The light-source system of colour wheel and the application colour wheel, optical projection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109298523A true CN109298523A (en) | 2019-02-01 |
Family
ID=65039969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710612351.1A Pending CN109298523A (en) | 2017-07-25 | 2017-07-25 | The light-source system of colour wheel and the application colour wheel, optical projection system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109298523A (en) |
| WO (1) | WO2019019517A1 (en) |
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| WO2019019517A1 (en) | 2019-01-31 |
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