CN207337053U - Projector - Google Patents
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- CN207337053U CN207337053U CN201720732525.3U CN201720732525U CN207337053U CN 207337053 U CN207337053 U CN 207337053U CN 201720732525 U CN201720732525 U CN 201720732525U CN 207337053 U CN207337053 U CN 207337053U
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- Projection Apparatus (AREA)
Abstract
The utility model discloses a kind of projector, is the projector of a pair of light valve framework in embodiment.Light source output illuminating ray in projector, the part of key lighting light excites output into the secondary illuminating ray of different wave length via a region 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 pass through fly's-eye lens, it is divided again by beam splitter, 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 in the lump, 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 to projection lens via a closing light optical element, and by image projecting a to surface.
Description
Technical field
It the utility model is related to a kind of projector, more particularly to a kind of projector of double light valve frameworks.
Background technology
The progress in the development propulsion epoch of science and technology, and due to consumer demand change greatly, projector on the market
Constantly weed out the old and bring forth the new.In digital projector, illumination light can switch to image light using light valve more, and digital projector product one
As i.e. with light valve construct difference, as distinguish projector mode.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) and three kinds of liquid crystal on silicon (Liquid Crystal On Silicon, LCOS).And it 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, preferable brightness can be reached, but do not designed using three light valves, production
Difficulty, be one quite be worth make great efforts direction.
Utility model content
One embodiment of the utility model provides a kind of projector, including light source, lens group, beam splitter, lens group,
Fluorescent wheel, lens group, speculum group, fly's-eye lens, lens group.Exportable one first color beam of light source；Fluorescent wheel is equipped with first
Region and second area, first area can receive the first color beam and excite one second color beam of output, and the first color beam then may be used
Via second area, continue light path；Fly's-eye lens is arranged on the travel path of the first color beam and the second color beam；First light splitting
Element is arranged on the travel path of the first color beam and the second color beam, and the second color beam can be changed output as light by beam splitter
Road different a tri-color beam and one the 4th color beam；First light valve is arranged on the traveling road of the first color beam and tri-color beam
On footpath, the first color beam and tri-color beam can be converted to the first image strip；And the second light valve is arranged on the 4th color beam
On travel path, the 4th color beam can be converted to the second image strip；And closing light optical element can then combine the first image light
Beam and the second image strip；Wherein, the color of the first color beam, the color of the second color beam, the color of tri-color beam and
The color of four color beams, is different.
Another viewpoint according to the present utility model, there is provided a kind of projector, that includes the first spatial light modulator machine,
Including light source, fluorescent wheel, the first beam splitter, the second beam splitter, fly's-eye lens, the first spatial light modulator, second space
The element such as light modulator and the 3rd beam splitter combines.
Exportable one first color beam of light source；In addition, there is a fluorescent bisque area and an optical effect area, firefly in fluorescent wheel
Light bisque area can receive the first color beam and export one second color beam, and optical effect area can make the first color beam penetrate or reflect
After leave fluorescent wheel.First beam splitter is provided on the travel path of the first color beam and the second color beam, the first light splitting member
The part of second color beam can be reflected to form a tri-color beam by part, and another part of the second color beam can be allowed to be penetratingly formed
One the 4th color beam.Second beam splitter is provided on the travel path of the first color beam and the second color beam, the second light splitting member
Part can reflect any one of the first color beam and the second color beam, and another one can be allowed to penetrate.Fly's-eye lens is provided at the first color
On the travel path of light beam and the second color beam, and the light path for being arranged at the first beam splitter and the second beam splitter advances it
Between.First spatial light modulator can receive the first color beam and tri-color beam and be converted to the first image strip.Second is empty
Between light modulator can receive and penetrate the 4th color beam, and be converted to the second image strip.3rd beam splitter, arranged on the first shadow
As the first image strip and the second image strip any one in the light path of light beam and the second image strip, can be reflected, and can allow
Another one penetrates.
Another viewpoint according to the present utility model, there is provided a kind of projector, that includes the first spatial light modulator machine,
Including light source, fluorescent wheel, the first beam splitter, the second beam splitter, fly's-eye lens, the first spatial light modulator, second space
The element such as light modulator and the 3rd beam splitter combines.The exportable light beam of the same colour of light source.Fluorescent wheel can be equipped with first area and
Second area, first area can receive the first color beam and excite output dichroscope beam, and the first color beam then can be via the secondth area
Domain, continues light path.First beam splitter can be arranged on the travel path of the first color beam and the second color beam, the first beam splitter
Second color beam can be changed to output into light path different tri-color beam and the 4th color beam.One fly's-eye lens can be arranged on first
On the travel path of color beam and tri-color beam.Two fly's-eye lenses can be arranged on the travel path of the 4th color beam.Light valve can
On the travel path of the first color beam and tri-color beam, the first color beam and tri-color beam can be converted to the first shadow
As light beam.Second light valve can be arranged on the travel path of the 4th color beam, the 4th color beam can be converted to the second image strip.
And one closing light optical element can combine the first image strip and the second image strip.The color of first color beam, the second coloured light
The color of the color of beam, the color of tri-color beam and the 4th color beam, is different.
The utility model compares single light valve framework, and double light valves design of the utility model can effectively lift overall brightness.And
By the use of fly's-eye lens, the space requirement of system entirety is able to be reduced and reduces the quantity of required lens so that system
Volume can be with smaller.And three light valve frameworks are compared, the utility model is in design, production difficulty is small and brightness can reach and three light valves
The close effect of framework.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand the skill of the utility model
Art means, and being practiced according to the content of specification, and in order to allow the above and other purpose, feature of the utility model
It can be become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate attached drawing, described in detail as follows.
Brief description of the drawings
Fig. 1 is the schematic diagram of the projector of the first embodiment of the utility model.
Fig. 2 is the schematic diagram of the projector of the second embodiment of the utility model.
Fig. 3 is the schematic diagram of the projector of the 3rd embodiment of the utility model.
Fig. 4 is the schematic diagram of the projector of the fourth embodiment of the utility model.
Embodiment
In relation to the utility model is foregoing and other technology contents, feature and effect, coordinate following with reference to the multiple of schema
In the detailed description of embodiment, can clearly it present.In addition, the term used in the following example " the first ", " the second "
It is to be used to recognize the same or similar element, is not limited to the element.In addition, following embodiments are just for throwing
Shadow machine is described further, and those skilled in the art can be applied to any required according to actual demand and by this connection system
Situation.
There is the material that can be reflected or penetrate partially or in whole to be formed for the so-called optical element of the utility model, finger element,
Generally include glass or plastic cement is formed.The so-called closing light of the utility model, refers to it is defeated that more than one light beam can be synthesized a light beam
Go out.The so-called lens of the utility model, refer at least allow part light penetration, and it enters, light output surface at least one
Radius of curvature is non-for infinity；In other words, the entering of lens, the one at least within of light-emitting surface need non-to be plane.And it is, for example,
Plate glass, then non-lens for the utility model meaning.
Fig. 1 paints the schematic diagram of the projector for the first embodiment for having stated the utility model.Referring to Fig. 1, as seen from the figure, throw
Shadow owner will 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 direct of travel of light, sequentially
Include light source 110, lens group 120, beam splitter 130, lens group 140, fluorescent wheel 150, lens group 160, speculum group
170th, fly's-eye lens 180, lens group 190.And imaging device 20, then including total internal reflection element 210, beam splitter 220 and
Two pieces of spatial light modulators 230,240.And camera lens 30 then includes several pieces of lens and an aperture.
The light source 110 of the utility model can be light-emitting diode chip for backlight unit, laser diode chip, foregoing two kinds of chips
Packaging body or other the light source of illuminating ray can be provided.In this present embodiment, light source 110 is a laser diodes matrix, and
Laser diodes matrix includes multiple laser diode packages 111 for sending blue light.And each laser diode package
Including the lenticule 111A above a laser diode chip, optics colloid and chip, lenticule 111A is used to adjust each phase
The light type of corresponding 111 emitted light of laser package body.In addition, foregoing signified blue light refers to a light beam, light beam has a light
Spectrum, and the peak wavelength (WP) in spectrum is between 470nm between 400nm, and the light beam is substantially blueness.In this implementation
In example, foregoing signified the first color beams of blue light As L1.
The lens group 120 of the utility model is made of one piece or more of lens.And in addition to lens, lens group 120
It inside must also include other non-lens elements.And in this present embodiment, lens group 120 includes two pieces of lens, the dioptric of each lens
Degree, the order advanced according to light are just and negative.The diopter of first piece of lens 121 is used just, to be mainly used as receiving light.And second piece saturating
The diopter summation of mirror 122 is negative, is mainly used for the collimation of light, therefore can be considered collimation lens.
The beam splitter 130 of the utility model 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 closing light filter group (X Plate), X-type light-combining prism (X Prism),
Or at least one including foregoing each and combinations thereof.In this present embodiment, optical filter is colored filter (Dichroic
Filter), it can allow the light of specified wavelength to reflect, and allow the light penetration of another wave-length coverage.And in this present embodiment, light splitting
Element 130 reflects blue light and allows yellow light to penetrate.And in another embodiment, beam splitter 130 also can be reflection yellow light and allow indigo plant
Light, which penetrates, also may be used.In this present embodiment, foregoing signified the second color beams of yellow light As L2.
The lens group 140 of the utility model is made of one piece or more of lens.And in addition to lens, lens group 120
It inside must also include other non-lens elements.In this present embodiment, the diopter summation of lens group 140 is just, and saturating including two pieces
Mirror, light to be converged to the surface of fluorescent wheel.
The fluorescent wheel 150 of the utility model refers to that a surface is equipped with fluorescent bisque and rotatable colyliform optical element.Firefly
Halo 150 can be penetration, reflective or be both mixing.Penetration fluorescent wheel 150 refers to that the phosphor powder on its surface is swashed
Hair output is excited after light, and the light that is at least partly excited can pass through fluorescent wheel 150 and the opposed surface output through incidence surface, that is,
It is consistent to enter light direction and light direction.And in reflective fluorescent wheel 150, the light that is excited can be by the reflecting layer institute of fluorescent wheel 150
Reflection, and make light along the opposite direction output for entering light direction.In this present embodiment, fluorescent wheel 150 penetrates for some, part
The fluorescent wheel 150 of reflection.In embodiment, fluorescent wheel 150 may also include a motor 151 and a substrate being connected with motor 151,
The axle center of motor 151 engages with the center of circle of round substrate and to interlock, and motor 151 can the related drive substrate rotation of center of rotation.
A fluorescent bisque area 150A and an optical effect area 150B, fluorescent bisque area 150A and optical effect area 150B are provided with substrate
It is substantially a ring-shaped to be combined into one.The surface at fluorescent bisque area 150A on substrate is equipped with a fluorescent bisque and a reflecting layer, substrate
Be connected by reflecting layer with fluorescent bisque, include in fluorescent bisque at least can part printing opacity phosphor powder and colloid mixing
Thing, makes long wavelength's light is excited and exported after being subjected to a short wavelength light.And reflecting layer includes a reflectance coating, such as
It is silverskin or aluminium film, allows light to reflect.In addition, in this present embodiment, the substrate of optical effect area 150B is that at least part is saturating
Bright, it is allowed to specific wavelength or the light penetration of characteristic.In this present embodiment, the fluorescent bisque on fluorescent bisque area 150A surfaces
Acceptable blue light is simultaneously inspired yellow light, and reflecting layer is a silverskin.On the other hand, the substrate of its optical effect area 150B is then
It is transparent, the light of any wavelength can be allowed to pass through.And it is noted that in optical effect area 150B, except substrate is except using saturating
Bright material is used as outside clear area, and substrate can also omit transparent material, and transparent material original position with opening or notch
Mode allows light directly via air by also may be used.And subsidiary one is mentioned that, in penetration fluorescent wheel 150, foregoing phosphor powder
It will not include reflecting layer in floor area 150A, and to be also at least part transparent for substrate, the light that is excited can be passed through.In addition, anti-
Penetrate in formula fluorescent wheel 150, foregoing optical effect area 150B is in addition to it can be foregoing transparent design, before can also using
State the design in reflecting layer.That is, in other words, depending on the difference of fluorescent wheel framework, the first color beam of blue light can penetrate light
Learn active region 150B or leave fluorescent wheel 150 after being reflected by optical effect area 150B.
The lens group 160 of the utility model includes one piece or more of lens.And in addition to lens, in lens group 160 also
It must include other non-lens elements.In this present embodiment, the diopter summation of lens group 160 is just, and including two pieces of lens
161st, 162, collimate light.
The speculum group 170 of the utility model includes two pieces with upper reflector.In this present embodiment, speculum group 170 according to
The travel path of light, sequentially includes the first speculum 171, the second speculum 172,174 and the 3rd speculum 173 of lens.
First speculum 171, the second speculum 172 and the 3rd speculum 173 are respectively a speculum, and without wavelength selection function.And
Angle between first speculum 171 and the second speculum 172 is about 90 degree, and the second speculum 172 and the 3rd speculum
Angle between 173 is also 90 degree.In practical application, a lens must be respectively equipped between the optical path of each speculum,
And in this present embodiment, a lens 174 are provided between the second speculum 172 and the optical path of the 3rd speculum 174, are used
To maintain the collimating status of light.
The surface of the fly's-eye lens (FLY-EYE) 180 of the utility model is provided with the optical texture of several matrix arrangements, by
It has been widely used element in fly's-eye lens, therefore will have only briefly described its structure.By material point, the material of fly's-eye lens can be
Plastic cement or glass system.And by process design point, fly's-eye lens can be single element form (ONE PIECE FORMED) or
Formed as combined by more pieces of optical elements.And in this present embodiment, fly's-eye lens be using glass molding (MOLDING) into
Type and be single element form, the homogenization for light.
The lens group 190 of the utility model includes one piece or more of lens.And in addition to lens, in lens group 190 also
It must include other non-lens elements.In this present embodiment, it is positive lens 191 that lens group 190, which includes one piece of diopter,.
The so-called ATR Optical element 210 of the utility model refers to that one carries out the optics of light path adjustment using being totally reflected
Element, in embodiment, refers to that one includes total reflection prism (TIR PRISM) group or reverse total reflection prism (RTIR PRISM)
The combination and modification of group or foregoing two element.And in this present embodiment, ATR Optical element 210 is a total reflection prism
Group.It is noted that the prism for being possible to be independently arranged and be not connected with by several pieces among single a prism group is formed, implementing
In example, to create fully reflecting surface, an air void is optionally provided between each prism.
The so-called beam splitter 220 of the utility model refers 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 closing light filter group (X Plate), X-type light-combining prism (X Prism) etc. can allow specific light
Learn the light penetration of characteristic or make the optical element of its reflection, or at least one including foregoing each and combinations thereof.Yu Benshi
Apply in example, optical filter is a colour splitting prism (Dichroic prism).The wavelength selection interface 221 of colour splitting prism can allow specified ripple
Long light reflection, allows the light penetration of another wave-length coverage.And in this present embodiment, wavelength selection interface 221 allow blue light and
The wavelength of feux rouges is reflected, and allows green wavelength to pass through.And in another embodiment, optical filter can also allow the corresponding wavelength of feux rouges
Reflected and allow blue light and the light of green wavelength to be passed through.And in another example, optical filter wears characteristic to feux rouges and green light
Can be with precedent on the contrary, the utility model is added to limit not to this.
The so-called spatial light modulator 230,240 of the utility model (Spatial Light Modulator, SLM), comprising
There are many separate units, they are spatially arranged in one-dimensional or two-dimensional array.Each unit can independently receive optics letter
Number or electrical signal control, using various physical effects (bubble Ke Ersi effects, Kerr effect, acoustooptical effect, magneto-optic effect,
The Self Electro-optic Effect of semiconductor, photorefractive effect etc.) change the optical characteristics of itself, so as to illuminating in several independences
The illumination light of unit is modulated, and image output light.In embodiment, the so-called spatial light modulator of the utility model is number
Any one of word microlens array chip (DMD), liquid crystal panel (LCD) and silica-based liquid crystal panel (LCOS) etc..And numeral is micro-
Any one of lens array (DMD), liquid crystal panel (LCD) and silica-based liquid crystal panel (LCOS) etc. can be used as light valve, will be shone
Mingguang City is converted to image light.And in this present embodiment, spatial light modulator 230 for a digital minitype reflector element (DMD) simultaneously
Used as light valve so that illumination light is converted to image light.That is, in this present embodiment, it is so-called in spatial light modulator 230
Separate unit refers to each minitype reflector on its surface, and minitype reflector can be rotated independently and by incident ray along specific
Angle reflection is to form image light.
The so-called camera lens 30 of the utility model includes plural piece lens, in this present embodiment, lens in camera lens 30 by
Ten pieces of lens are formed, that is, its lens sum is less than or equal to 10 pieces.And in another example, in the camera lens 30 in the present embodiment
Lens be made of 20 pieces of lens, 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 blueness that light source 110 is sent swashs
Light light beam can first pass through lens group 120 and collimate and 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
Apply in example, fluorescent bisque area 150A and optical effect area 150B is included on fluorescent wheel.When on blue light illumination to fluorescent wheel 150
During fluorescent bisque area 150A, the phosphor powder in fluorescent bisque area 150A can receive blue light beam and produce and export a sodium yellow
Beam.The yellow light beam for having part can be irradiated 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
When taking turns the optical effect area 150B on 150, since optical effect area is transparent for essence, therefore blue light can penetrate the colour wheel 150, and
, can be by the institute of lens 174 after sequentially being reflected by the first speculum 171 of the speculum group 170 at its rear and the second speculum 172
Collimation, then beam splitter 130 is reached with respect to fluorescent wheel 150 and another table of light source 110 with being reflected by the 3rd speculum 173
Face.
Blue ray can be reflected and enter fly's-eye lens 180 by beam splitter 130.On the other hand, the sodium yellow being excited
Beam toward beam splitter 130 and can penetrate into fly's-eye lens 180 by reflection.After blue light and yellow light output fly's-eye lens 180, blue light
And yellow light can carry out receiving light and straight by lens group 190.Then, blue light beam and yellow light beam can be all-trans by one respectively
Prism 210 is penetrated, and the transparent optical interface for being totally reflected prism 210 is reflected because of total reflection phenomenon.
Then, blue light beam and yellow light beam can leave total reflection prism 210 and enter beam splitter 220.Beam splitter
There is a wavelength to select interface 221 in 220.The feux rouges part that wavelength selection interface 221 allows blue light to penetrate and allow in yellow light reflects
To form a red, blue light beam；In this present embodiment, foregoing signified feux rouges As tri-color beams.The interface of wavelength selection at the same time
221 choosings can penetrate the green light part in yellow light to form a green beam, in this present embodiment, foregoing signified green light As the 4th
Color beam.The red beam and blue light beam for penetrating wavelength selection interface 221 can enter spatial light modulator in different sequential
240, and spatial light modulator 240 respectively can also reflect light beam and red light beam and be converted to a blue, red image light
Beam.Then, blue, red image strip can penetrate the wavelength selection interface 221 of beam splitter 220, and enter and penetrate total reflection
Prism 210.Similarly, after green beam penetrates the wavelength selection interface 221 of beam splitter 220, spatial light modulation can be entered
Green beam can be also converted to green image strip back reflection by device 230, spatial light modulator 230, and green image strip can be worn
The wavelength selection interface 221 of saturating beam splitter 220 simultaneously enters and penetrates total reflection prism 210.And treat the shadow of blue, red, green three colors
After being pierced by total reflection prism 210 as light, three color image light can enter projection lens 30 and be projected as image.And it should be noted
It is that the design of the double space light modulator 230,240 of this framework can make double space light modulator 230,240 respectively at the same time and lasting
Ground exports feux rouges and green light image light.Thereby, without wasting the light of specific wavelength, the overall light efficiency of system is enable significantly to carry
Rise.
It will be described below the design of the second embodiment of the utility model.In lower example, only put up with different from first embodiment
Place illustrates.In this present embodiment, it is identical with precedent before light output lens group 190.It is as follows without existing together.
In this present embodiment, projector the light path rear of lens group 190 be equipped with beam splitter 410, lens group 470, thoroughly
Microscope group 480, prism 420, light valve 430, prism 440, light valve 450 and closing light optical element 460.
The so-called beam splitter 410 of the utility model refers 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 closing light filter group (X Plate), X-type light-combining prism (X Prism) etc. can be to specific lights
Learn the light optical element that is penetrated or reflected of characteristic, or at least one including foregoing each and combinations thereof.Yu Benshi
Apply in example, beam splitter 410 is a colored filter (Dichroic filter).And in this present embodiment, beam splitter 410
The wavelength of blue light and feux rouges can be allowed by and allowing green wavelength to be reflected.And in another embodiment, optical filter can also allow red
The corresponding wavelength of light by and allow blue light and the light of green wavelength to be reflected.And in another example, beam splitter to feux rouges and
The characteristic of wearing of green light can be with precedent on the contrary, the utility model is added to limit not to this.
The so-called lens group 470,480 of the utility model includes one piece or more of lens.And in addition to lens, lens group
470th, other non-lens elements must also be included in 480.In this present embodiment, lens group 470,480 includes one piece of diopter and is
Positive lens are with the effect for collimation.And in another example, lens group 470,480 is mutually inclined respectively by two pieces and diopter is
Positive lens are formed；And among two pieces at least one piece can be non-spherical lens.
The so-called prism 420 of the utility model and prism 440 refer to that one includes total reflection prism (TIR PRISM) group or anti-
Combination and modification to total reflection prism (RTIR PRISM) group or foregoing two element.And in this present embodiment, prism 420,
440 be a total-reflection prism group, that is, it is respectively one kind of ATR Optical element.It is noted that single a prism group
Among the prism that is possible to be independently arranged and be not connected with by several pieces formed, in embodiment, to create fully reflecting surface, each prism
Between be optionally provided with an air void.
The so-called light valve 430,450 of the utility model refers to one respectively can be converted into illumination light the optical element of image light,
Also it is any one of the elements such as the micro- reflection chip of numeral, liquid crystal panel, silica-based liquid crystal panel.And light valve 430,450 is in this reality
Apply in example as the micro- reflection chip (DMD) of a numeral.
The so-called closing light optical element 460 of the utility model refers to lens, speculum, 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 closing light filter group (X Plate), X-type light-combining prism
(X Prism) etc. can allow certain optical properties light penetration or the optical element that reflects it, or including foregoing each extremely
Few one and combinations thereof.In this present embodiment, closing light optical element 460 is a colour splitting prism (Dichroic prism).And in
In the present embodiment, closing light optical element 460, which can reflect, allows the wavelength of blue light and feux rouges, and allows green wavelength 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 by and allow blue light and
The light of green wavelength is reflected.And in another example, closing light optical element 460 can be with precedent to the characteristic of wearing of feux rouges and green light
On the contrary, the utility model is added to limit not to this.
The places more different from precedent are that light can pass through a beam splitter 410 after lens group 190.Light splitting
Element 410 in this present embodiment, allows blue light beam and red beam to penetrate, and reflection green light beam.After green beam is reflected
Prism 420 can be entered after lens group 480 is collimated, and light valve 430 is reflected onto via the total reflection interface of prism 420
Surface.And after green beam can be converted into the image strip of green by light valve 430, via and to penetrate closing light optical element 460 defeated
Go out to projection lens 30 with for projection.On the other hand, the blue light beam and red beam for penetrating beam splitter 410 can be respectively not
With 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
Blue light beam and red beam can be converted to a blueness and red image strip by valve 450.And blueness and red image strip meeting
Projection lens 30 is reflexed to for projection via closing light optical element 460.
It will be described below the design of the 3rd specific embodiment of the utility model.In lower example, only put up with and second embodiment
Do not exist together and illustrate.In this present embodiment, beam splitter 410 is a colour splitting prism.Utilize and divide in the second specific embodiment
When Look mirror (Dichoric Mirror) is divided, when the angle of incident light into dichronic mirror is bigger, its color offset (Color
Shift) will be bigger, cause the Color control of whole picture also just difficult.And in this present embodiment, after using colour splitting prism instead,
When light encounters the plane of incidence of prism, because the influence of Snell's law (Snell`s Law), can reduce during light is incident to
The angle of heart film plating layer.In addition, in this present embodiment, each light extraction interface of colour splitting prism, which is respectively equipped with one and corresponds to, to be passed through
The filter coating of the color of light beam, makes to be further purified by light beams colors.
It will be described below the design of the 4th specific embodiment of the utility model.In lower example, only put up with and 3rd embodiment
Do not exist together and illustrate.Single fly's-eye lens 180 is placed in beam splitter 410 and optical filtering 130 compared to 3rd embodiment
Optical path between design, in this present embodiment, foregoing fly's-eye lens 180 is removed and in beam splitter 410, lens
A fly's-eye lens 491 is provided between group 480 and the optical path of prism 420；And in beam splitter 410, lens group 470 and
Another fly's-eye lens 492 is provided between the optical path of prism 440, further to improve the uniformity of light beam.
The utility model compares single light valve framework, and double light valves design of the utility model can effectively lift overall brightness.And
By the use of fly's-eye lens, the space requirement of system entirety is able to be reduced and reduces the quantity of required lens so that system
Volume can be with smaller.And three light valve frameworks are compared, the utility model is in design, production difficulty is small and brightness can reach and three light valves
The close effect of framework.Although the utility model is disclosed above with embodiment, but the utility model is not limited to, appointed
What those skilled in the art, without departing from the spirit and scope of the utility model, when can make a little change and profit
Decorations.Such as set between each optical element lens or other adjusting the optical element of light type, or, be, for example, the
In one embodiment, the fluorescent wheel used can reflect blue light and yellow light according to different sequential and omit follow-up speculum group etc.
Can.Therefore the scope of protection of the utility model is when subject to those as defined in claim.
Claims (10)
- A kind of 1. projector, it is characterised in that including：One light source, exportable one first color beam；One fluorescent wheel, equipped with a first area and a second area, 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 fly's-eye lens, on the travel path of first color beam and second color beam；One first beam splitter, it is first point described on the travel path of first color beam and second color beam Second color beam can be changed output as light path different a tri-color beam and one the 4th color beam by optical element；One first light valve, can be by first color on the travel path of first color beam and the tri-color beam Light beam and the tri-color beam are converted to the first image strip；AndOne second light valve, on the travel path of the 4th color beam, can be converted to the second shadow by the 4th color beam As light beam；AndOne closing light optical element, can be with reference to first image strip and second image strip；Wherein, the color of first color beam, the color of second color beam, the color of the tri-color beam and described The color of 4th color beam, is different.
- 2. projector as claimed in claim 1, it is characterised in that the projector further comprises having：One first lens group, has positive diopter, is arranged at first color beam between the fluorescent wheel and the light source Travel path on；One second lens group, has positive diopter, is arranged 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 speculum group, on the travel path of first color beam, the speculum group is arranged on second lens group Relative to the other end on the optical path of the fluorescent wheel；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 arranged on the firefly On the optical path of halo and the fly's-eye lens；One the 3rd lens group, diopter are the just optical path between the fly's-eye lens and first beam splitter On；One the 4th lens group, diopter are just, arranged on first light valve, first beam splitter and the closing light optics On optical path between element；One first prism, on the optical path between the 4th lens group and first light valve；One the 5th lens group, diopter are just, arranged on second light valve, first beam splitter and the closing light optics On optical path between element；AndOne second prism, on the optical path between the 5th lens group and second light valve.
- A kind of 3. projector, it is characterised in that including：One light source, exportable one first color beam；One fluorescent wheel, equipped with a first area and a second area, 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 first beam splitter, it is first point described on the travel path of first color beam and second color beam Second color beam can be changed output as light path different a tri-color beam and one the 4th color beam by optical element；One first fly's-eye lens, on the travel path of first color beam and the tri-color beam；One second fly's-eye lens, on the travel path of the 4th color beam；One first light valve, can be by first color on the travel path of first color beam and the tri-color beam Light beam and the tri-color beam are converted to the first image strip；AndOne second light valve, on the travel path of the 4th color beam, can be converted to the second shadow by the 4th color beam As light beam；AndOne closing light optical element, can be with reference to first image strip and second image strip；Wherein, the color of first color beam, the color of second color beam, the color of the tri-color beam and described The color of 4th color beam, is different.
- 4. projector as claimed in claim 3, it is characterised in that the first fly's-eye lens and the second compound eye through hole with It is positive lens not include diopter between the light path of first beam splitter.
- 5. such as claim 1-2 any one of them projector, it is characterised in that the closing light optical element is a colour splitting prism An or dichronic mirror.
- 6. such as claim 1-2 any one of them projector, it is characterised in that first beam splitter is a color separation rib Mirror.
- 7. such as claim 1-3 any one of them projector, it is characterised in that first light valve and second light valve point Wei not a digital microlens array chip.
- 8. such as claim 1-3 any one of them projector, it is characterised in that the projector further comprises thering is one second Beam splitter, on the travel path of first color beam and second color beam, second beam splitter can be anti- Any one of first color beam and second color beam are penetrated, and another one can be allowed to penetrate.
- A kind of 9. projector, it is characterised in that including：One light source, exportable one first color beam；One fluorescent wheel, has a fluorescent bisque area and an optical effect area, the fluorescent bisque area can receive first coloured light Beam simultaneously exports one second color beam, and the optical effect area can make the first color beam penetrate or be left after reflecting the fluorescent wheel；One first beam splitter, it is first point described on the travel path of first color beam and second color beam The part of second color beam can be reflected to form a tri-color beam by optical element, and can allow the another of second color beam Part is penetratingly formed one the 4th color beam；One second beam splitter, it is second point described on the travel path of first color beam and second color beam Optical element can reflect any one of first color beam and second color beam, and another one can be allowed to penetrate；One fly's-eye lens, on the travel path of first color beam and second color beam, and is arranged at described Between the light path of one beam splitter and second beam splitter is advanced；One first spatial light modulator, can receive first color beam and the tri-color beam and be converted to the first image light Beam；One second space light modulator, can receive and penetrate the 4th color beam, and be converted to the second image strip；AndOne the 3rd beam splitter, in the light path of first image strip and second image strip, can reflect described Any one of first image strip and second image strip, and another one can be allowed to penetrate.
- 10. projector as claimed in claim 9, it is characterised in that first spatial light modulator and the second space Light modulator is respectively a digital microlens array chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720732525.3U CN207337053U (en) | 2017-06-22 | 2017-06-22 | Projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720732525.3U CN207337053U (en) | 2017-06-22 | 2017-06-22 | Projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207337053U true CN207337053U (en) | 2018-05-08 |
Family
ID=62426806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720732525.3U Active CN207337053U (en) | 2017-06-22 | 2017-06-22 | Projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207337053U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI680307B (en) * | 2019-02-25 | 2019-12-21 | 台灣彩光科技股份有限公司 | White light illumination system |
| CN111123627A (en) * | 2019-12-31 | 2020-05-08 | 深圳市中科创激光技术有限公司 | Projection device and projector |
-
2017
- 2017-06-22 CN CN201720732525.3U patent/CN207337053U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI680307B (en) * | 2019-02-25 | 2019-12-21 | 台灣彩光科技股份有限公司 | White light illumination system |
| CN111123627A (en) * | 2019-12-31 | 2020-05-08 | 深圳市中科创激光技术有限公司 | Projection device and projector |
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