CN109471318A - Projector - Google Patents
Projector Download PDFInfo
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- CN109471318A CN109471318A CN201710798305.5A CN201710798305A CN109471318A CN 109471318 A CN109471318 A CN 109471318A CN 201710798305 A CN201710798305 A CN 201710798305A CN 109471318 A CN109471318 A CN 109471318A
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- Prior art keywords
- light
- color beam
- color
- prism
- projector
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- 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
-
- 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
- G03B21/206—Control of light source other than position or intensity
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
Abstract
Disclosed herein a kind of projectors, are the projector of a pair of light valve framework in embodiment.The part of light source output illuminating ray in projector, key lighting light exports the secondary illuminating ray at different wave length via the region excitation of fluorescent wheel, and the part of key lighting light can continue light path via another region of fluorescent wheel.Key lighting light and secondary illuminating ray can be via prisms, and secondary illuminating ray is divided into the light of twice different colours, one enters a light valve, and another one and the part of key lighting light enter another light valve together, and the illuminating ray of different colours is respectively transformed into image light by two light valves.Then, the image light of each light valve can be exported via a light combination optical element to projection lens, and will be on image projecting a to surface.Under the design of such structure, the generation of color offset (color shift) phenomenon is effectively reduced.
Description
Technical field
The present invention relates to a kind of projector more particularly to a kind of projectors of double light valve frameworks.
Background technique
The progress for developing the propulsion epoch of science and technology, and greatly due to consumer demand variation, projector on the market
Constantly weed out the old and bring forth the new.In digital projector, illumination light mostly can switch to image light using light valve, and digital projector product one
As the i.e. difference that construct with light valve, the mode as differentiation projector.And distinguished according to the type of light valve, main technology can
It is divided into liquid crystal display (Liquid-Crystal Display, LCD), digital light processing (Digital Light
Processing, DLP) with three kinds of liquid crystal on silicon (Liquid Crystal On Silicon, LCOS).It and is in response to consumer
Raising to brightness demand, begin with dealer using more light valve structures come and meanwhile provide multiple wavelength image use raising projection
The overall brightness of machine.
Wherein, using the design of double light valves, it can achieve preferable brightness, but without using the design of three light valves, production
Difficulty, be one quite be worth make great efforts direction.
Summary of the invention
One embodiment of the invention provides a kind of projector, including light source, fluorescent wheel, prism, the first light valve, the second light
Valve and light combination optical element.Exportable first color beam of light source；Fluorescent wheel is equipped with first area and second area, first area
It can receive the first color beam and excite the second color beam of output, the first color beam then can continue light path via second area；Prism
On the travel path of the first color beam and the second color beam, prism has light splitting interface, and light splitting interface can be by the second coloured light
Beam, which is converted, exports the third color beam and fourth color beam different into optical path, and the first color beam and third color beam can be via first
Light interface exports out, and the 4th color beam can go out the output of light interface via second；First light valve is set to the first optical path for going out light interface
First color beam and third color beam can be converted to the first image strip by downstream；Second light valve be set to second go out light interface it
4th color beam can be converted to the second image strip by optical path downstream；Light combination optical element is in combination with the first image strip and
Two image strips；The wherein color of the first color beam, the color of the second color beam, the color of third coloured light and the 4th color beam
Color is different.
Another viewpoint according to the present invention provides a kind of projector, including light source, fluorescent wheel, Dichroic Optical Elements,
One light valve, the second light valve, light combination optical element.Exportable first color beam of light source；Fluorescent wheel is equipped with first area and the secondth area
Domain, first area can receive the first color beam and simultaneously excite the second color beam of output, the first color beam then can via second area, after
Continuous light path；Dichroic Optical Elements are set on the travel path of the first color beam and the second color beam, the first Dichroic Optical Elements tool
Have into light interface, light splitting interface, first go out light interface and second go out light interface, when the second color beam enters incident light interface with enter light
Less than 15 degree, the second color beam can be converted and export the third different for optical path the angle in the normal vector direction of interface by light splitting interface
Color beam and the 4th color beam, the first color beam and third color beam can go out the output of light interface via first, and the 4th color beam can
Via the second smooth interface output；First light valve is set to the first optical path downstream for going out light interface, can be by the first color beam and the third
Color beam is converted to the first image strip；Second light valve is set to the second optical path downstream for going out light interface, can turn the 4th color beam
It is changed to the second image strip；Light combination optical element is in combination with the first image strip and the second image strip；Wherein the first color beam
Color, the color of the second color beam, the color of the color of third coloured light and the 4th color beam, be different.
By taking above-listed embodiment as an example, single light valve framework is compared, double light valves design of the invention can effectively promote overall brightness.
And by the use of prism, so that the second color beam entrance prism is small with the angle for the normal vector for entering light interface when entering light interface
In special angle, under the design of such structure, when light encounters the plane of incidence of prism, because of Snell's law (Snell`s
Law influence) can reduce the angle that light is incident to center film plating layer, and then color offset (color shift) is effectively reduced
The generation of phenomenon.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the schematic diagram of the projector of the first embodiment of the present invention.
Fig. 2 is the schematic diagram of the Dichroic Optical Elements of the first embodiment of the present invention.
Fig. 3 is the schematic diagram of the projector of the second embodiment of the present invention.
Specific embodiment
In relation to aforementioned and other technology contents, feature and effect of the invention, multiple implementations of schema are referred in following cooperation
In the detailed description of example, can clearly it present.In addition, term used in the following example " the first ", " the second " be for
Identification the same or similar element and use, be not limited to the element.In addition, following embodiment is just for projector
It is described further, this connection system can be applied to any required shape according to actual demand by those skilled in the art
Condition.
The so-called optical element of the present invention is that there is finger element the material that can be reflected or penetrate partially or in whole to be constituted, leads to
It often include that glass or plastic cement are formed.The so-called light combination of the present invention, light beam output can be synthesized for more than one light beam by meaning.This
So-called lens are invented, referring at least can allow part light to penetrate, and it enters, the radius of curvature of at least one of light output surface is non-
For infinitely great optical element；In other words, the entering of lens, the one at least within of light-emitting surface need non-for plane.And it is, for example,
Plate glass, then it is non-for signified lens of the invention.
Fig. 1 draws the schematic diagram for having stated the projector of the first embodiment of the present invention.Referring to Fig. 1, as seen from the figure, projector
It mainly include lighting device, imaging device and projection lens.
First illustrate the design of lighting device below.In this present embodiment, lighting device 10, according to the direction of travel of light, sequentially
It include light source 110, lens group 120, beam splitter 130, lens group 140, fluorescent wheel 150, lens group 160, reflection microscope group
170, fly's-eye lens 180, lens group 190.And imaging device 20, then include Dichroic Optical Elements 410, prism 420, light valve 430,
Prism 440, light valve 450, light combination optical element 460, lens group 470, lens group 480.And it includes plural number piece that camera lens 30, which is then,
Lens and an aperture.
Light source 110 of the invention can be the encapsulation of LED Chips for Communication, Laser Diodes chip, aforementioned two kinds of chips
Body or other can provide the light source of illuminating ray.In this present embodiment, light source 110 is a Laser Diodes matrix, and laser
Diode matrix includes the Laser Diodes packaging body 111 of multiple capable of emitting blue lights.And each Laser Diodes packaging body includes
A lenticule 111A above one Laser Diodes chip, optics colloid and chip, lenticule 111A are each corresponding for adjusting
111 emitted light of laser packaging body light type.In addition, the blue light of aforementioned meaning refers to that a light beam, light beam have a spectrum, and
Peak wavelength (WP) system in spectrum is between 400 to 470, and the light beam is substantially blue.In this present embodiment, aforementioned institute
The blue light of finger is the first color beam L1.
Lens group 120 of the invention is made of one piece or more of lens.And other than lens, in lens group 120 also
Obtaining includes other non-lens elements.And in this present embodiment, lens group 120 includes two pieces of lens, the diopter of each lens, according to
The sequence that light is advanced is positive and bears.The diopter of first piece of lens 121 is positive, and is mainly used as receipts light and is used.And second piece of lens
122 diopter summation is negative, and is mainly used for the collimation of light, therefore can be considered collimation lens.
Beam splitter 130 of the invention refers to that bandpass filter (bandpass filters), band refuse optical filter
(bandstop filters), color separation filter (Dichroic filter), dichronic mirror (dichroic mirror), color separation rib
Any one of the elements such as mirror (Dichroic prism), X-type light combination filter group (X Plate), X-type light-combining prism (X Prism),
Or at least one including aforementioned each and combinations thereof.In this present embodiment, optical filter is colored filter (Dichroic
Filter), the light of specified wavelength can be allowed to reflect, the light of another wave-length coverage is allowed to penetrate.And in this present embodiment, light splitting
Element 130 reflects blue light and yellow light is allowed to penetrate.And in another embodiment, beam splitter 130 also for reflection yellow light and can allow indigo plant
Light, which penetrates, also may be used.And in embodiment, the yellow light of aforementioned meaning is the second color beam L2.
Lens group 140 of the invention is made of one piece or more of lens.And other than lens, in lens group 120 also
Obtaining includes other non-lens elements.In this present embodiment, the diopter summation of lens group 140 is positive, and including two pieces of lens, uses
Light to be converged to the surface of fluorescent wheel.
Fluorescent wheel 150 of the invention refers to that a surface is equipped with fluorescent bisque and rotatable colyliform optical element.Fluorescent wheel
150 can be penetration, mixing that is reflective or being the two.It is defeated that penetration fluorescent wheel 150 means that the phosphor powder on its surface is excited
It is excited after light out, the light that is at least partly excited can pass through fluorescent wheel 150 and the opposed surface output through incidence surface, that is, enter light
Direction and light direction are consistent.And in reflective fluorescent wheel 150, the light that is excited can be reflected by the reflecting layer of fluorescent wheel 150,
And make light along the opposite direction output for entering light direction.In this present embodiment, fluorescent wheel 150 penetrates for some, part reflection
Fluorescent wheel 150.In embodiment, fluorescent wheel 150 may also include a motor 151 and the substrate that connect with motor 151, motor
151 axle center engages with the center of circle of round substrate and to interlock, and motor 151 can rotate the related drive substrate rotation in axle center.Substrate
On be provided with first area and second area, first area is a fluorescent bisque area 150A, and second area is an optical effect area
It is substantially a ring-shaped that 150B, fluorescent bisque area 150A and optical effect area 150B are combined into one.At fluorescent bisque area 150A on substrate
Surface be equipped with a fluorescent bisque and a reflecting layer, substrate connect by reflecting layer with fluorescent bisque, includes in fluorescent bisque
At least can the phosphor powder of part light transmission and the mixture of colloid, be excited after being allowed to an acceptable short wavelength light and to export one long
Wavelength light.And reflecting series of strata includes a reflectance coating, e.g. silverskin or aluminium film, and light is allowed to reflect.In addition, in this implementation
In example, the substrate of optical effect area 150B is that at least part is transparent, and the light of specific wavelength or characteristic is allowed to penetrate it.In
In the present embodiment, the fluorescent bisque on the fluorescent bisque area surface 150A is subjected to blue light and is inspired yellow light, and reflecting layer is one
Silverskin.On the other hand, the substrate of optical effect area 150B is then transparent, and the light of any wavelength can be allowed to pass through.And it should be noted
, in optical effect area 150B, in addition to substrate in addition to using transparent material as clear area other than, substrate can also omit transparent
Material, and the original position of transparent material by be open or notch in a manner of allow light directly via air by also may be used.And it is attached to
One is mentioned that, will not include reflecting layer in aforementioned fluorescent bisque area 150A in penetration fluorescent wheel 150, and substrate is also at least
It is transparent for part, the light that is excited can be passed through.In addition, optical effect area 150B above-mentioned is removed in reflective fluorescent wheel 150
It can be other than transparent design above-mentioned, it can also be using the design in aforementioned reflecting layer.Also that is, in other words, depending on fluorescent
Take turns framework difference, the first color beam of blue light can penetrate optical effect area 150B or by optical effect area 150B reflection after from
Open fluorescent wheel 150.In addition, in one embodiment, the substrate of fluorescent wheel 150 has more third region, third region is another firefly
Light bisque area, the fluorescent bisque on this fluorescent bisque area surface are subjected to blue light and are inspired feux rouges or green light.
Lens group 160 of the invention includes one piece or more of lens.And other than lens, it must also be wrapped in lens group 160
Include other non-lens elements.In this present embodiment, the diopter summation of lens group 160 is positive, and including two pieces of lens 161,
162, collimate light.
Reflection microscope group 170 of the invention includes two pieces with upper reflector.In this present embodiment, reflection microscope group 170 is according to light
Travel path, sequentially include the first reflecting mirror 171, the second reflecting mirror 172, lens 174 and third reflecting mirror 173.First
Reflecting mirror 171, the second reflecting mirror 172 and third reflecting mirror 173 are respectively a reflecting mirror, and without wavelength selection function.And first
Angle between reflecting mirror 171 and the second reflecting mirror 172 is about 90 degree, and the second reflecting mirror 172 and third reflecting mirror 173 it
Between angle be also 90 degree.In practical application, reflection microscope group 170 must be respectively equipped between the optical path of each reflecting mirror
One lens, and in this present embodiment, a lens are provided between the second reflecting mirror 172 and the optical path of third reflecting mirror 174
174, to maintain the collimating status of light.
The surface of fly's-eye lens (FLY-EYE) 180 of the invention is provided with the optical texture of a plurality of matrix arrangements, due to
Fly's-eye lens has been widely used element, therefore will only briefly describe its structure.By material point, the material of fly's-eye lens can be modeling
Glue or glass system.And by process design point, fly's-eye lens can be single element form (ONE PIECE FORMED) or
Made of as combined by more pieces of optical elements.And in this present embodiment, fly's-eye lens is formed using glass molding (MOLDING)
And be single element form, be used for light homogenization.
Lens group 190 of the invention includes one piece or more of lens.And other than lens, it must also be wrapped in lens group 190
Include other non-lens elements.In this present embodiment, lens group 190 includes the lens 191 that one piece of diopter is positive.
It is noted that in the present embodiment, fly's-eye lens 180 has a primary optic axis 181, and lens group 190 has the
Two optical axises 191, the second optical axis 191 of lens group 190 favour the primary optic axis 181 of fly's-eye lens 180.
The so-called Dichroic Optical Elements 410 of the present invention refer to that bandpass filter (bandpass filters), band are refused to filter
Piece (bandstop filters), colored filter (Dichroic filter), dichronic mirror (dichroic mirror), color separation
Prism (Dichroic prism), X-type light combination filter group (X Plate), X-type light-combining prism (X Prism) etc. can be to specific lights
The optical element that the light of characteristic is penetrated or reflected is learned, or at least one including aforementioned each and combinations thereof.Yu Benshi
It applies in example, Dichroic Optical Elements 410 are a colour splitting prism (Dichroic prism).Dichroic Optical Elements 410 have to be situated between into light
Face 411, light splitting interface 412, first go out light interface 413 and second go out light interface 414.In this present embodiment, yellow light enters incident light
Angle when interface 412 with the normal vector 415 for entering light interface 412 is less than 15 degree.The calculation of aforementioned so-called angle refers to
As shown in Fig. 2, when yellow light when entering light interface 412, has in entrance prism between yellow light and the normal vector 415 for entering light interface 411
Have maximum angle θ 1 (positive value) and minimum angle θ 2 (negative value), and when above-mentioned yellow light enters incident light interface 412 with enter light interface
The angle of 412 normal vector 415 is maximum angle θ 1 and 2 summation of minimum angle θ divided by two, i.e., (θ 1+ θ 2)/2.Citing comes
It says, if the maximum angle θ 1 and minimum angle θ 2 respectively+20 and -30 that first light enters light interface 411 is spent, first light
It is negative with the angle for entering light interface 411 5 degree.Yellow light can be converted and export the feux rouges and green light different for optical path by light splitting interface 412,
And in this present embodiment, the light splitting interface 412 of Dichroic Optical Elements 410 can allow the wavelength of blue light and feux rouges to pass through, and allow green light
Wavelength is reflected, and the wavelength of blue light and feux rouges can go out light interface 413 by the first of Dichroic Optical Elements 410 and export, and green
The wavelength of light can go out light interface 414 by the second of Dichroic Optical Elements 410 and export.And in another embodiment, Dichroic Optical
The light splitting interface 412 of element 410 can also allow the corresponding wavelength of feux rouges to pass through and blue light and the light of green wavelength is allowed to be reflected, and
The wavelength of green light can go out light interface 413 by the first of Dichroic Optical Elements 410 and export, and the wavelength of blue light and feux rouges can be by
The second of Dichroic Optical Elements 410 goes out light interface 414 and exports.And in another example, Dichroic Optical Elements 410 are to feux rouges and green light
Characteristic of wearing can be with precedent on the contrary, the present invention adds to limit not to this.
The so-called prism 420 of the present invention and prism 440 refer to that one is including total reflection prism (TIR PRISM) group or reversely complete
The prism of combination and the modification of reflecting prism (RTIR PRISM) group or aforementioned two element.And in this present embodiment, prism
420,440 be a total-reflection prism group, also that is, it is respectively one kind of ATR Optical element.It is noted that single a rib
It is possible to be independently arranged by several pieces among microscope group and the prism being not connected with is constituted, in embodiment, to create fully reflecting surface, respectively
It is optionally provided with an air void between prism or is composed with the more pieces of different materials of refractive index made prisms,
Also there must be approximate effect.
The so-called light valve 430,450 of the present invention respectively refers to an optical element that illumination light can be converted into image light, that is,
It is any one of the elements such as the micro- reflection chip of numerical digit, liquid crystal display panel, silica-based liquid crystal panel.And light valve 430,450 is in the present embodiment
In be the micro- reflection chip (DMD) of a numerical digit.
The so-called light combination optical element 460 of the present invention refers to lens, reflecting mirror, bandpass filter (bandpass
Filters), band refuses optical filter (bandstop filters), colored filter (Dichroic filter), dichronic mirror
(dichroic mirror), colour splitting prism (Dichroic prism), X-type light combination filter group (X Plate), X-type light-combining prism
(X Prism) etc. can allow the light of certain optical properties penetrate or make its reflect optical element, or including aforementioned each extremely
Few one and combinations thereof.In this present embodiment, light combination optical element 460 is a colour splitting prism (Dichroic prism).And in
In the present embodiment, light combination optical element 460, which can reflect, allows the wavelength of blue light and feux rouges, and green wavelength is allowed to penetrate.And in another
In embodiment, depending on light valve position and its enter the differences of light light beams colors, can also allow the corresponding wavelength of feux rouges to pass through and allow blue light and
The light of green wavelength is reflected.And in another example, light combination optical element 460 can be with precedent to the characteristic of wearing of feux rouges and green light
On the contrary, the present invention adds to limit not to this.
The so-called lens group 470,480 of the present invention includes one piece or more of lens.And other than lens, lens group 470,
Also obtaining in 480 includes other non-lens elements.In this present embodiment, lens group 470,480 includes that one piece of diopter is positive
The benefits of lens are with to collimate.And in another example, lens group 470,480 is mutually inclined respectively by two pieces and that diopter is positive is saturating
Mirror is formed；And among two pieces at least one piece can be non-spherical lens.
The so-called camera lens 30 of the present invention includes plural piece lens, and in this present embodiment, the lens in camera lens 30 are by ten pieces
Lens are formed, that is, the total number system of its lens is less than or equal to 10 pieces.And in another example, in the camera lens 30 in the present embodiment
Lens are made of 20 pieces of lens, also that is, its number of lenses is smaller than equal to 20 pieces.
The relativeness of aforementioned elements will be illustrated below.In this present embodiment, the blue thunder that light source 110 issues
Irradiating light beam first through the collimation of lens group 120 and can reach beam splitter 130, and the optical axis of beam splitter 130 and lens group 120 is to be in
About 45 degree of angle, that is, it is about 45 degree that it, which enters optic angle,.And beam splitter 130 can reflect blue light and make blue light via lens group
140 focus on the surface of fluorescent wheel 150.
Period, the lasting rotation of fluorescent wheel 150, blue light can sequentially be irradiated to the different zones on fluorescent wheel 150.Yu Benshi
It applies in example, includes fluorescent bisque area 150A and optical effect area 150B on fluorescent wheel.When on blue light illumination to fluorescent wheel 150
When fluorescent bisque area 150A, the phosphor powder in fluorescent bisque area 150A can receive blue light beam and generate and export a sodium yellow
Beam.Having the yellow light beam of part can irradiate to 130 direction of beam splitter, and have another part then can be to the reflection of fluorescent wheel 150
The irradiation of layer direction, but reflecting layer can be by the light back of the part to beam splitter 130.And when blue light illumination to fluorescent wheel
When optical effect area 150B on 150, since optical effect area is that essence is transparent, therefore blue light can penetrate the colour wheel 150, and by it
After the first reflecting mirror 171 and the second reflecting mirror 172 of the reflection microscope group 170 at rear sequentially reflect, can by lens 174 standard
Directly.One word of rear must also refer to the rear of optical path in addition to referring to rear physically.Furthermore blue light can be again therewith by third reflecting mirror
173 reflections are to reach another surface of the beam splitter 130 with respect to fluorescent wheel 150 and light source 110.The meeting of beam splitter 130 will be blue
Light reflects and enters fly's-eye lens 180.On the other hand, the yellow light beam being excited can be reflected toward beam splitter 130 and be worn
It penetrates into fly's-eye lens 180.After blue light and yellow light output fly's-eye lens 180, blue light and yellow light can be received by lens group 190
Light and straight.
Then, blue light and yellow light can leave lens group 190 and enter Dichroic Optical Elements 410.In Dichroic Optical Elements 410
There is light splitting interface 412.Light splitting interface 412 allows blue light to penetrate and allow the feux rouges part reflection in yellow light red, blue to form one
Light beam；In this present embodiment, the feux rouges of aforementioned meaning is third color beam.Be divided simultaneously interface 412 select can allow it is green in yellow light
Light part is to form a green beam, and in this present embodiment, the green light of aforementioned meaning is the 4th color beam.Dichroic Optical Elements
410 in this present embodiment, and blue light beam and red beam is allowed to penetrate, and reflection green light beam.Green beam can be through after being reflected
It crosses after lens group 480 is collimated and enters prism 420, and be reflected onto 430 surface of light valve via the total reflection interface of prism 420.
And light valve 430 can by green beam be converted into green image strip after, via and penetrate light combination optical element 460 output to throw
Shadow camera lens 30 is projection.On the other hand, the blue light beam and red beam for penetrating Dichroic Optical Elements 410 can be respectively in differences
Time after the collimation of lens group 470, be reflected onto the surface of light valve 450 via the total reflection interface of prism 440, and light valve
450 can be converted to blue light beam and red beam one blue and red image strip.And blue and red image strip can be through
Projection lens 30 is reflexed to as projection by light combination optical element 460.
Fig. 3 draws the schematic diagram for having stated the projector of the second embodiment of the present invention.Referring to Fig. 3, in this example, compared to
Single fly's-eye lens 180 is placed in the design between the optical path of beam splitter 410 and optical filtering 130 by one embodiment, in
In the present embodiment, fly's-eye lens 180 above-mentioned is removed and in the optics road of beam splitter 410, lens group 480 and prism 420
A fly's-eye lens 491 is provided between diameter；And between the optical path of beam splitter 410, lens group 470 and prism 440
It is provided with another fly's-eye lens 492, further to improve the uniformity of light beam.
The present invention compares single light valve framework, and double light valves design of the invention can effectively promote overall brightness.And by prism
Use so that the second color beam entrance prism when entering light interface with enter light interface normal vector angle less than 15 degree,
Under such structure design, when light encounters the plane of incidence of prism, because of the influence of Snell's law (Snell`s Law),
The angle that light is incident to center film plating layer can be reduced, and then the generation of color offset (color shift) phenomenon is effectively reduced.
Although the present invention has been disclosed as a preferred embodiment, however, it is not to limit the invention, skill belonging to the present invention
Have usually intellectual in art field, without departing from the spirit and scope of the invention, when can make it is a little change and retouch, because
The protection scope of this present invention is subject to view appended claims institute defender.
Claims (11)
1. a kind of projector characterized by comprising
One light source, exportable one first color beam；
One fluorescent wheel is equipped with a first area and a second area, and the first area can receive first color beam and swash
Hair one second color beam of output, first color beam then can continue light path via the second area；
One prism, on the travel path of first color beam and second color beam, the prism has a light splitting
Second color beam can be converted and export a third color beam and one fourth color different for optical path by interface, the light splitting interface
Light beam, first color beam and the third color beam can go out the output of light interface, the 4th color beam via described first
The output of light interface can be gone out via one second；
One first light valve is set to the described first optical path downstream for going out light interface, can be by first color beam and the third color
Light beam is converted to the first image strip；
One second light valve is set to the described second optical path downstream for going out light interface, the 4th color beam can be converted to the second shadow
As light beam；And
One light combination optical element, in combination with first image strip and second image strip；
Wherein, the color of first color beam, the color of second color beam, the color of the third coloured light and described
The color of four color beams is different.
2. a kind of projector characterized by comprising
One light source, exportable one first color beam；
One fluorescent wheel is equipped with a first area and a second area, and the first area can receive first color beam and swash
Hair one second color beam of output, first color beam then can continue light path via the second area；
One Dichroic Optical Elements, it is first point described on the travel path of first color beam and second color beam
Light optical element have one enter light interface, one light splitting interface, one first go out light interface and one second go out light interface, second color
When entering light interface described in light beam incidence with it is described enter light interface normal vector direction angle less than 15 degree, the light splitting interface can
Second color beam conversion is exported into a third color beam and one fourth color beam different for optical path, first color beam
And the third color beam can go out the output of light interface via described first, the 4th color beam can be via the described second smooth interface
Output；
One first light valve is set to the described first optical path downstream for going out light interface, can be by first color beam and the third color
Light beam is converted to the first image strip；
One second light valve is set to the described second optical path downstream for going out light interface, the 4th color beam can be converted to the second shadow
As light beam；And
One light combination optical element, in combination with first image strip and second image strip；
Wherein, the color of first color beam, the color of second color beam, the color of the third coloured light and described
The color of four color beams is different.
3. projector as claimed in claim 2, which is characterized in that the Dichroic Optical Elements are a prism.
4. projector as claimed in claim 1 or 3, which is characterized in that the projector further comprises having a fly's-eye lens,
Between the prism and the fluorescent wheel.
5. projector as claimed in claim 1 or 3, which is characterized in that projector, institute further comprises having two fly's-eye lenses,
One of fly's-eye lens be set between the prism and first light valve, wherein another fly's-eye lens be set to the prism and
Between second light valve.
6. projector as claimed in claim 1 or 2, which is characterized in that the fluorescent wheel further comprises having third region, institute
Stating third region can receive first color beam and inspires the third color beam or the 4th color beam.
7. projector as claimed in claim 1 or 2, which is characterized in that the light combination optical element is a prism.
8. projector as claimed in claim 1 or 2, which is characterized in that first color beam is blue, second coloured light
Beam is yellow, the third color beam and the 4th color beam respectively any one of green or red.
9. projector as claimed in claim 1 or 3, which is characterized in that the fluorescent wheel further comprises having third region, institute
Stating third region can receive first color beam and inspires the third color beam or the 4th color beam, the light combination
Optical element is a prism, and first color beam is blue, and second color beam is yellow, the third color beam and institute
Any one that the 4th color beam is respectively green or red is stated, and the projector further comprises having a fly's-eye lens, being set to
Between the prism and the fluorescent wheel.
10. projector as claimed in claim 1 or 3, which is characterized in that the fluorescent wheel further comprises having third region,
The third region can receive first color beam and inspire the third color beam or the 4th color beam, the conjunction
Light optical element be a prism, first color beam be blue, second color beam be yellow, the third color beam and
4th color beam is respectively any one of green or red, and the projector further comprises having two fly's-eye lenses,
One of fly's-eye lens be set between the prism and first light valve, wherein another fly's-eye lens be set to the prism and
Between second light valve.
11. projector as claimed in claim 1 or 3, feature exist, first color beam is blue, the first area
Including a reflecting layer and a fluorescent bisque, the second area is a clear area, and second color beam is yellow, the third
Color beam is that red, described 4th color beam is green, and first light valve and second light valve are respectively microlens array
Chip, the light combination optical element is colour splitting prism, and the projector further comprises:
One first lens group has positive diopter, is set to first color beam between the fluorescent wheel and the light source
Travel path on；
One second lens group has positive diopter, is set on the travel path of first color beam, second lens group
The other end on optical path of the fluorescent wheel relative to first lens group；
One reflection microscope group, on the travel path of first color beam, the reflecting mirror is mounted on second lens group
Relative to the other end on the optical path of the fluorescent wheel；
One fly's-eye lens, on the travel path of first color beam and second color beam, and the fly's-eye lens
With a primary optic axis；
One dichronic mirror, on the travel path of first color beam and second color beam, the dichronic mirror can reflect
Any one of first color beam and second color beam, and another one can be allowed to penetrate, the dichronic mirror is set to the firefly
On the optical path of halo and the fly's-eye lens；
One the third lens group, diopter are positive, on the optical path between the fly's-eye lens and the prism, and it is described
The third lens group has one second optical axis, and second inclined light shaft is in the primary optic axis；
One the 4th lens group, diopter are positive, and are set between first light valve, the prism and the light combination optical element
Optical path on；
One first prism, on the optical path between the 4th lens group and first light valve；
One the 5th lens group, diopter are positive, and are set between second light valve, the prism and the light combination optical element
Optical path on；And
One second prism, on the optical path between the 5th lens group and second light valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710798305.5A CN109471318A (en) | 2017-09-07 | 2017-09-07 | Projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710798305.5A CN109471318A (en) | 2017-09-07 | 2017-09-07 | Projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109471318A true CN109471318A (en) | 2019-03-15 |
Family
ID=65657651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710798305.5A Pending CN109471318A (en) | 2017-09-07 | 2017-09-07 | Projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109471318A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111624841A (en) * | 2020-06-24 | 2020-09-04 | 成都极米科技股份有限公司 | Mixed light source system and projection display equipment |
| CN114488672A (en) * | 2020-10-26 | 2022-05-13 | 中强光电股份有限公司 | Illumination system and projection device |
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| CN105022216A (en) * | 2014-04-16 | 2015-11-04 | 精工爱普生株式会社 | Illumination device and projector |
| CN106647126A (en) * | 2016-12-27 | 2017-05-10 | 苏州佳世达光电有限公司 | Light source apparatus and projection apparatus |
| CN107065411A (en) * | 2017-03-29 | 2017-08-18 | 李龙 | Fluorescence filter wheel and its light-source system, optical projection system |
| TWM547687U (en) * | 2017-05-09 | 2017-08-21 | 揚明光學股份有限公司 | Projector |
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| WO2014196015A1 (en) * | 2013-06-04 | 2014-12-11 | Ｎｅｃディスプレイソリューションズ株式会社 | Illumination optical system and projector |
| CN105022216A (en) * | 2014-04-16 | 2015-11-04 | 精工爱普生株式会社 | Illumination device and projector |
| CN106647126A (en) * | 2016-12-27 | 2017-05-10 | 苏州佳世达光电有限公司 | Light source apparatus and projection apparatus |
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| TWM547687U (en) * | 2017-05-09 | 2017-08-21 | 揚明光學股份有限公司 | Projector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111624841A (en) * | 2020-06-24 | 2020-09-04 | 成都极米科技股份有限公司 | Mixed light source system and projection display equipment |
| CN111624841B (en) * | 2020-06-24 | 2022-02-01 | 成都极米科技股份有限公司 | Mixed light source system and projection display equipment |
| CN114488672A (en) * | 2020-10-26 | 2022-05-13 | 中强光电股份有限公司 | Illumination system and projection device |
| US11669003B2 (en) | 2020-10-26 | 2023-06-06 | Coretronic Corporation | Illumination system and projection device |
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