CN106773494A - A kind of optical projection system - Google Patents

A kind of optical projection system Download PDF

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Publication number
CN106773494A
CN106773494A CN201710186026.3A CN201710186026A CN106773494A CN 106773494 A CN106773494 A CN 106773494A CN 201710186026 A CN201710186026 A CN 201710186026A CN 106773494 A CN106773494 A CN 106773494A
Authority
CN
China
Prior art keywords
light
lens
module
plus lens
colour wheel
Prior art date
Application number
CN201710186026.3A
Other languages
Chinese (zh)
Inventor
李龙
Original Assignee
李龙
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 李龙 filed Critical 李龙
Priority to CN201710186026.3A priority Critical patent/CN106773494A/en
Publication of CN106773494A publication Critical patent/CN106773494A/en

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2006Lamp housings characterised by the light source
    • G03B21/2033LED or laser light sources
    • G03B21/204LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2066Reflectors in illumination beam
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/208Homogenising, shaping of the illumination light

Abstract

The invention discloses a kind of optical projection system, including:Light source, for sending directional light;Light beam reduces module, and positioned at the light direction of light source, light beam reduces module includes the first convex lens and the first concavees lens, the spot size for reducing directional light;Light reduces module and is located between light source and plus lens group;Adjusting module, for adjusting the distance between the first convex lens and the first concavees lens, diminution degree of the module to hot spot is reduced to adjust light beam;Plus lens group, for the light focusing to being irradiated to plus lens group;Plane where fluorescence colour wheel, fluorescence colour wheel is vertical with the optical axis direction of plus lens group, and the light that plus lens group is focused on is radiated on fluorescence colour wheel;Plus lens group is fixed with the position of fluorescence colour wheel;Multiple light path converting elements, are same light beam for the transmitted light and reflected light of fluorescence colour wheel to be collected.The regulation difficulty for reducing the size that regulation is radiated at fluorescence colour wheel glazing spot is realized, the use reliability of projecting apparatus is improve.

Description

A kind of optical projection system
Technical field
The present embodiments relate to shadow casting technique, more particularly to a kind of optical projection system.
Background technology
Because in meeting or teaching, projecting apparatus assists in numerous participants and understands content, therefore projection in time Instrument is as instrument indispensable under the more occasions of number such as meeting or teaching.
Projecting apparatus is generally required and inspires the light of other colors, example on fluorescent material by by the light irradiation of blue wavelength Such as sodium yellow and green light, then it is converted into redgreenblue light and projects to dmd chip by the wavelength filtering of colour filter module On, so as to form the image that human eye is seen.
In order that projecting apparatus obtains enough brightness of image, generally require to adjust the size for being radiated at hot spot on fluorescent material, Cause number of photons in unit area excessively to cause fluorescent material saturation if hot spot is too small, and then make projecting apparatus brightness of image not enough, If hot spot is too big, the energy in unit area is too weak, causes to be irradiated to the fluorescent material of deep layer on fluorescence colour wheel on direction of illumination Number weakens, so that the very few brightness of image that can also cause projecting apparatus of number of photons is not enough in unit area, so making in projecting apparatus With needing to adjust the size that is radiated at fluorescence colour wheel glazing spot before, so that projecting apparatus has enough brightness of image, existing skill The size of fluorescence colour wheel glazing spot is radiated in art often through the position de-regulation of regulation fluorescence colour wheel, but the method is present The shortcomings of making the run-off the straight of fluorescence colour wheel and wave, the performance of projecting apparatus is influenceed, and due to fluorescence colour wheel and adjacent groups The position of part is nearer, and regulation difficulty is big.
The content of the invention
The embodiment of the present invention provides a kind of optical projection system, to realize reducing the size that regulation is radiated at fluorescence colour wheel glazing spot Regulation difficulty, improve projecting apparatus use reliability.
A kind of optical projection system is the embodiment of the invention provides, including:Light source, light beam reduce module, adjusting module, converge thoroughly Microscope group, fluorescence colour wheel and multiple light path converting elements;
The light source is used to send directional light;
The light beam reduces the light direction that module is located at the light source, and the light beam reduces module includes the first convex lens With the first concavees lens, the spot size for reducing the directional light;The light beam reduces module and is located at the light source and described Between plus lens group;
The adjusting module is used to adjust the distance between first convex lens and first concavees lens, to adjust the light Beam reduces diminution degree of the module to hot spot;
The plus lens group is used for the light focusing to being irradiated to plus lens group;
Plane where the fluorescence colour wheel is vertical with the optical axis direction of the plus lens group, and the plus lens group is poly- Burnt light is radiated on the fluorescence colour wheel;The fluorescence colour wheel includes fluorescent reflection area and transparent area, the fluorescent reflection Area is used to receiving the light focused on through the plus lens group and excites light-emitting phosphor in fluorescent reflection area, and by the fluorescence Powder emits beam reflection, and the transparent area is used for the light focused on through the plus lens group;
It is same light that the multiple light path converting element is used to collect the transmitted light and reflected light of the fluorescence colour wheel Beam.
Alternatively, the light reduces module also includes diffusion sheet, and the diffusion sheet is located at the concavees lens away from described The side of the first convex lens.
Alternatively, the plus lens group includes:First plus lens, the second plus lens and the 3rd plus lens.
Alternatively, the light source is LASER Light Source.
Alternatively, the multiple light path converting element includes that two-phase color chips, the first speculum, the second speculum and the 3rd are anti- Penetrate mirror;
The two-phase color chips is located between the light collection module and the plus lens group;Where the two-phase color chips Plane is at 45 ° with the light source light direction or 58 °;
First speculum, the 3rd speculum be arranged in parallel with the two-phase color chips, and anti-with described second Mirror is penetrated to be vertically arranged.
Alternatively, the optical projection system also includes the second convex lens, and second convex lens are common with the plus lens group Optical axis is set, and the focus of second convex lens is located on the fluorescence colour wheel.
Alternatively, the optical projection system also includes colour filter module, and the colour filter module is located at the two-phase color chips away from institute State plus lens group side and set with the plus lens group common optical axis, the colour filter module is used for by the iridescent The light of wheel reflection and/or transmission carries out wavelength filtering.
It is glimmering that optical projection system provided in an embodiment of the present invention includes that light source, light beam reduce module, adjusting module, plus lens group Light colour wheel and multiple light path converting elements, plus lens group are used to be focused convergence to the light for being irradiated to plus lens group, And the light of convergence is radiated on fluorescence colour wheel, in the embodiment of the present invention, plus lens group is fixed with the position of fluorescence colour wheel, Light beam is adjusted by adjusting module and reduces the distance between the first convex lens and the first concavees lens in module, to adjust light beam contracting Little module adjusts the size for being radiated at fluorescence colour wheel glazing spot to the diminution degree of hot spot, solves and leads in the prior art The big shortcoming of regulation difficulty, realizes when the position de-regulation for overregulating fluorescence colour wheel is radiated at the size of fluorescence colour wheel glazing spot The regulation difficulty that regulation is radiated at the size of fluorescence colour wheel glazing spot is reduced, the use reliability of projecting apparatus is improve, and improve The brightness of image of projecting apparatus.In the optical projection system that the embodiment of the present application is provided, the position of fluorescence colour wheel and plus lens group is Fixed, the regulation to distance between the first convex lens and the first concavees lens is realized in the case of light source can be closed, with Realize that projecting apparatus obtains enough brightness of image, simplify the scheduling and planning technique of projecting apparatus, saved cost.
Brief description of the drawings
Fig. 1 is a kind of structural representation of optical projection system provided in an embodiment of the present invention;
Fig. 2 is the structural representation of fluorescence colour wheel provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just Part rather than entire infrastructure related to the present invention is illustrate only in description, accompanying drawing.
Fig. 1 is a kind of structural representation of optical projection system provided in an embodiment of the present invention, throwing provided in an embodiment of the present invention Shadow system can apply to projecting apparatus, as shown in figure 1, optical projection system provided in an embodiment of the present invention includes:Light source 10, light beam contracts Little module 20, adjusting module 30, plus lens group 40, fluorescence colour wheel 50 and multiple light path converting elements.Wherein, shown in Fig. 1 Dotted line represents light, and light source 10 is used to send directional light, and light beam reduces the light direction that module 20 is located at light source 10, and light beam reduces Module 20 can include the first convex lens 21 and the first concavees lens 22, and it is big for reducing the hot spot of directional light that light beam reduces module 20 Small, i.e., light beam reduces the directional light that the incidence end of module 20 receives a branch of angle pencil of ray, with arrow beam of light after light beam reduces module 20 Outgoing, the outgoing beam that specifically light beam reduces module 20 can be directional light or be approximately directional light, and light beam reduces module 20 Between light source 10 and plus lens 40.Adjusting module 30 is used to adjust between the first convex lens 21 and the first concavees lens 22 Distance, diminution degree of the module 20 to hot spot is reduced to adjust light beam.Plus lens group 40 is used for being irradiated to plus lens group 40 light focusing.The place plane of fluorescence colour wheel 50 is vertical with the optical axis direction of plus lens group 40, and plus lens group 40 is poly- Burnt light is radiated on fluorescence colour wheel 50.Fig. 2 is the structural representation of fluorescence colour wheel provided in an embodiment of the present invention, such as Fig. 2 Shown, fluorescence colour wheel 50 includes fluorescent reflection area 51 and transparent area 52, and fluorescent reflection area 51 is used to receive through plus lens group 40 The light of focusing excites the light-emitting phosphor in fluorescent reflection area 51, and fluorescent material is emitted beam reflection, and transparent area 52 is used for Through the light that plus lens group 40 is focused on, plus lens group 40 is fixed with the position of fluorescence colour wheel 50, multiple light path converting units It is same light beam that part is used to collect the transmitted light and reflected light of fluorescence colour wheel 50.
Specifically, fluorescence colour wheel 50 can select circle, and fluorescent reflection area 51 is formed in the edge of circular fluorescent colour wheel 50, The angle corresponding to sector region that fluorescent reflection area 51 is formed is 300 °, corresponding to the sector region that transparent area 52 is formed Angle be 60 °.In other embodiments, can also be other angles, can specifically be selected according to actual conditions, for example, It is 260 ° to set the angle corresponding to the sector region that reflected fluorescent light area is formed, right described in the sector region that transparent area is formed The angle answered is 100 °.
It is glimmering that optical projection system provided in an embodiment of the present invention includes that light source, light beam reduce module, adjusting module, plus lens group Light colour wheel and multiple light path converting elements, plus lens group are used to be focused convergence to the light for being irradiated to plus lens group, And the light of convergence is radiated on fluorescence colour wheel, in the embodiment of the present invention, plus lens group is fixed with the position of fluorescence colour wheel, Light beam is adjusted by adjusting module and reduces the distance between the first convex lens and the first concavees lens in module, to adjust light beam contracting Little module adjusts the size for being radiated at fluorescence colour wheel glazing spot to the diminution degree of hot spot, solves and leads in the prior art The big shortcoming of regulation difficulty, realizes when the position de-regulation for overregulating fluorescence colour wheel is radiated at the size of fluorescence colour wheel glazing spot Reduction regulation is radiated at the regulation difficulty of the size of fluorescence colour wheel glazing spot, and improves the brightness of image of projecting apparatus, improves The use reliability of projecting apparatus.Using in the prior art adjust fluorescence colour wheel mode, also exist wave fluorescence colour wheel, Fluorescence colour wheel is deviateed plus lens group optical axis and make fluorescence colour wheel and its surrounding optical element etc. that lacking for mechanical collision to occur Fall into, cause field adjustable to fail, even if or after dispatching from the factory, the normal of projecting apparatus can be influenceed to use.
Further, since being in the prior art that position de-regulation by adjusting fluorescence colour wheel is radiated at fluorescence colour wheel glazing spot Size, therefore during the position of regulation fluorescence colour wheel, light source is closed, and whole regulation process needs Light source is repeatedly closed, fluorescence colour wheel position is then adjusted, light source is then opened and is tested, it is going round and beginning again until being adjusted to most Goodization.And in the optical projection system that the embodiment of the present application is provided, the position of fluorescence colour wheel and plus lens group is fixed, Ke Yiwu The regulation to distance between the first convex lens and the first concavees lens is realized in the case of light source need to be closed, to realize that projecting apparatus is obtained Enough brightness of image, simplify the scheduling and planning technique of projecting apparatus, have saved cost.
Alternatively, with reference to Fig. 1, light reduces mould 20 also includes diffusion sheet 70, and diffusion sheet 70 is located at concavees lens 20 away from the The side of one convex lens 10, diffusion sheet 70 has the effect of divergent beams, while diffusion sheet 70 can be in face of beam propagation side To section on hot spot light intensity magnitude homogenize, with realize improve fluorescence excitation efficiency, improve projecting apparatus brightness of image.
Alternatively, with reference to Fig. 1, plus lens group 40 includes:First plus lens 41, the second plus lens 42 and the 3rd converge Poly- lens 43.Using multiple plus lens for single plus lens, there is more preferable light collection effect.Need explanation , the embodiment of the present invention is not limited the quantity of the plus lens group included in plus lens group, for example, plus lens Group can also include two or four plus lens.
Alternatively, light source is LASER Light Source, and laser has the advantages that high directivity and high brightness, so using LASER Light Source Projecting apparatus can be made to obtain brightness of image higher.
Alternatively, with reference to Fig. 1 and Fig. 2, multiple light path converting elements include two-phase color chips 64, the first speculum 61, second The speculum 63 of speculum 62 and the 3rd.Two-phase color chips 64 is located between light collection module 30 and plus lens group 40, two-phase color The place plane of piece 64 and the light direction of light source 10 are at 45 ° or 58 °, and the benefit of so setting is advantageous for carrying out two-phase color chips 64 Plated film.First speculum 61, the 3rd speculum 63 be arranged in parallel with two-phase color chips 64, and vertical with the second speculum 62 set Put.Wherein, two-phase color chips 64 has wavelength selectivity.Specifically, light source 10 sends the excitation beam of blue wavelength, excitation beam Fluorescent reflection area by being radiated at fluorescence colour wheel 50 after the upper surface of two-phase color chips 64 is reflected after plus lens group 40 is focused on On 51 fluorescent material, the light beam that is excited of yellow and green wavelength is inspired, the light beam that is excited is anti-along the opposite direction of laser beam It was shot through two-phase color chips 64;Light source 10 sends the excitation beam of blue wavelength, and excitation beam is passed through after two-phase color chips 64 reflects Cross after plus lens group 40 is focused on and be radiated on the transparent area 52 of fluorescence colour wheel 50, printing opacity of the excitation beam through fluorescence colour wheel 50 Area 52 is simultaneously radiated on two-phase color chips 64 after the reflection of the first speculum 61, the second speculum 62 and the 3rd speculum 63, warp It is same light beam to collect with the light beam that is excited through two-phase color chips 64 after the lower surface reflection for crossing two-phase color chips 64.
Alternatively, with reference to Fig. 1, optical projection system also includes the second convex lens 80, the second convex lens 80 and plus lens group 40 Common optical axis is set, and the focus of the second convex lens 80 is located on fluorescence colour wheel 50.The setting of the second convex lens 80 can will transmit through The excitation beam of fluorescence colour wheel 50 is changed into directional light after collecting, and plays the effect of beam collection and beam collimation.
Alternatively, with reference to Fig. 1, optical projection system also include colour filter module 90, colour filter module 90 be located at two-phase color chips 64 away from The side of plus lens group 40 and with the common optical axis of plus lens group 40 set, colour filter module 90 be used for being reflected by fluorescence colour wheel 50 And/or the light of transmission carries out wavelength filtering, i.e., to by after the reflection of the lower surface of two-phase color chips 64 with through two-phase color chips 64 The light beam that is excited collect for the converging beam of same light beam carries out wavelength filtering.Colour filter module 90 can include that the 4th converges Lens 92 and the filter wheel 91 positioned at the point of intersection of the 4th plus lens 92, converging beam after filter wheel 91 by being converted into RGB Three coloured light is simultaneously transmitted on dmd chip, so as to form the image that human eye is seen.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes, Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.

Claims (7)

1. a kind of optical projection system, it is characterised in that including:Light source, light beam reduce module, adjusting module, plus lens group, fluorescence Colour wheel and multiple light path converting elements;
The light source is used to send directional light;
The light beam reduces the light direction that module is located at the light source, and the light beam reduces module includes the first convex lens and the One concavees lens, the spot size for reducing the directional light;The light beam reduces module and is located at the light source and the convergence Between lens group;
The adjusting module is used to adjust the distance between first convex lens and first concavees lens, is contracted with adjusting the light beam Diminution degree of the little module to hot spot;
The plus lens group is used for the light focusing to being irradiated to plus lens group;
Plane where the fluorescence colour wheel is vertical with the optical axis direction of the plus lens group, and plus lens group focusing Light is radiated on the fluorescence colour wheel;The fluorescence colour wheel includes fluorescent reflection area and transparent area, and the fluorescent reflection area uses Light-emitting phosphor in reception excites fluorescent reflection area through the light that the plus lens group is focused on, and the fluorescent material is sent out Light extraction line reflection, the transparent area is used for the light focused on through the plus lens group;
It is same light beam that the multiple light path converting element is used to collect the transmitted light and reflected light of the fluorescence colour wheel.
2. system according to claim 1, it is characterised in that the light reduces module also includes diffusion sheet, the expansion Discrete piece is located at side of the concavees lens away from first convex lens.
3. system according to claim 1, it is characterised in that the plus lens group includes:First plus lens, second Plus lens and the 3rd plus lens.
4. system according to claim 1, it is characterised in that the light source is LASER Light Source.
5. system according to claim 1, it is characterised in that the multiple light path converting element includes two-phase color chips, the One speculum, the second speculum and the 3rd speculum;
The two-phase color chips is located between the light collection module and the plus lens group;Plane where the two-phase color chips It is at 45 ° with the light source light direction or 58 °;
First speculum, the 3rd speculum be arranged in parallel with the two-phase color chips, and with second speculum It is vertically arranged.
6. system according to claim 1, it is characterised in that the optical projection system also includes the second convex lens, described the Two convex lens are set with the plus lens group common optical axis, and the focus of second convex lens is located on the fluorescence colour wheel.
7. system according to claim 5, it is characterised in that the optical projection system also includes colour filter module, the colour filter Module is located at the two-phase color chips and is set away from the plus lens group side and with the plus lens group common optical axis, the filter Color module is used to carry out wavelength filtering to the light for being reflected by the fluorescence colour wheel and/or transmit.
CN201710186026.3A 2017-03-27 2017-03-27 A kind of optical projection system CN106773494A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140211169A1 (en) * 2013-01-28 2014-07-31 Panasonic Corporation Lighting device and image display device
CN103969933A (en) * 2013-02-04 2014-08-06 深圳市光峰光电技术有限公司 Laser light source, wavelength conversion light source, integrating light source and projection display device
CN104656354A (en) * 2013-11-21 2015-05-27 中强光电股份有限公司 Illumination system and projection apparatus
CN104793345A (en) * 2014-01-22 2015-07-22 深圳市亿思达科技集团有限公司 Light source system used for eliminating laser speckle
WO2015189947A1 (en) * 2014-06-12 2015-12-17 Necディスプレイソリューションズ株式会社 Light source device and projector
CN105974597A (en) * 2016-07-05 2016-09-28 成都福兰特电子技术股份有限公司 Terahertz laser variable beam expanding ratio shaping apparatus
CN106195671A (en) * 2016-09-03 2016-12-07 超视界激光科技(苏州)有限公司 Laser module
CN106324964A (en) * 2016-11-16 2017-01-11 四川长虹电器股份有限公司 Efficient laser projection system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140211169A1 (en) * 2013-01-28 2014-07-31 Panasonic Corporation Lighting device and image display device
CN103969933A (en) * 2013-02-04 2014-08-06 深圳市光峰光电技术有限公司 Laser light source, wavelength conversion light source, integrating light source and projection display device
CN104656354A (en) * 2013-11-21 2015-05-27 中强光电股份有限公司 Illumination system and projection apparatus
CN104793345A (en) * 2014-01-22 2015-07-22 深圳市亿思达科技集团有限公司 Light source system used for eliminating laser speckle
WO2015189947A1 (en) * 2014-06-12 2015-12-17 Necディスプレイソリューションズ株式会社 Light source device and projector
CN105974597A (en) * 2016-07-05 2016-09-28 成都福兰特电子技术股份有限公司 Terahertz laser variable beam expanding ratio shaping apparatus
CN106195671A (en) * 2016-09-03 2016-12-07 超视界激光科技(苏州)有限公司 Laser module
CN106324964A (en) * 2016-11-16 2017-01-11 四川长虹电器股份有限公司 Efficient laser projection system

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