CN105143943B - Optical projection system with infrared light supply - Google Patents
Optical projection system with infrared light supply Download PDFInfo
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- CN105143943B CN105143943B CN201280076687.6A CN201280076687A CN105143943B CN 105143943 B CN105143943 B CN 105143943B CN 201280076687 A CN201280076687 A CN 201280076687A CN 105143943 B CN105143943 B CN 105143943B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
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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
- G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
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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
- G03B33/00—Colour photography, other than mere exposure or projection of a colour film
- G03B33/06—Colour photography, other than mere exposure or projection of a colour film by additive-colour projection apparatus
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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
- G03B33/00—Colour photography, other than mere exposure or projection of a colour film
- G03B33/10—Simultaneous recording or projection
- G03B33/12—Simultaneous recording or projection using beam-splitting or beam-combining systems, e.g. dichroic mirrors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Projection Apparatus (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
A kind of optical projection system with infrared light supply participates in the imaging of projective module group wherein can be set to infrared light supply (400) in projection light source (100), not only has visible images on projecting into image planes at this time, also has infrared light image；Also infrared light supply (400) can be set in projection objective (200) or be not involved in projective module group between projection objective (200) and projection light source (100) and be imaged；The first lens set (201) that its mid-infrared light source (400) can at least pass through in projection module is cast out.Continuous infrared image is obtained by the first beam splitter (500) and infrared monitoring module (300) in the optical projection system, has been equivalent to REAL TIME INFRARED THERMAL IMAGE monitoring camera；Focus control can be also set in the optical projection system to realize manually or automatically focusing function；Since the entire projected picture of the optical projection system has been filled with infrared light, it is easy to realize interactive operation function.
Description
Technical field
The present invention relates to optical projection systems, more specifically to a kind of optical projection system with infrared light supply, projection therein
Light is projected from same projection objective with infrared light.
Background technology
As shown in Figure 1, the core in conventional projection system is projection module, projection light source is generally included in projecting module
100 and projection objective 200, the light that projection light source 100 is sent out projects after projection objective 200 as projected light, on the screen shape
At projection plane.In order to form interactive optical projection system, infrared monitoring function can be also further added, such as in the patent No.
200820071126.8 Chinese utility model patent in, disclose a kind of " large screen infrared monitoring projection objective ".Wherein
Provided with a beam splitter and an infrared monitoring module, the infrared light of external reflection can enter projection objective and then through dividing
Optical element is transmitted to infrared monitoring module, to realize infrared monitoring, interaction.
In the existing various optical projection systems with infrared monitoring function, infrared light and projection light source that infrared light supply is sent out
That passes through respectively is different optical channel, and infrared light supply is independently from projection objective, the disadvantage is that being unfavorable for that interactive throwing is made
Shadow, and independent infrared light supply set up it is also cumbersome.
Invention content
For the drawbacks described above of the prior art, the invention solves conventional projection system mid-infrared light sources to be independently from projection
Object lens, the problem of trouble is set and is unfavorable for that interactive projection is made.
The technical solution adopted by the present invention to solve the technical problems is：A kind of optical projection system with infrared light supply is constructed,
Including projecting module, the projection module includes projection light source and projection objective, and the light that the projection light source is sent out is successively through institute
It states the second lens set in projection objective, projected as projected light after the first lens set；Wherein, further include infrared light supply, it is described
The infrared light that infrared light supply is sent out at least projects after first lens set together with the projected light.
It may also include the first beam splitter in the projection objective of the present invention, further include in the system and first light splitting
The infrared monitoring module of element connection, the infrared monitoring module include monitoring object lens and induction chip；The infrared light supply hair
The infrared light gone out is after being reflected back at least through being transmitted to the infrared prison after first lens set, the first beam splitter
Control module.
In a preferred embodiment of the present invention, first beam splitter be set to second lens set and projection light source it
Between, the second beam splitter is equipped between first lens set and the second lens set；The light that the projection light source is sent out is successively
It projects, is imaged on as projected light after first beam splitter, the second lens set, the second beam splitter, the first lens set
On projection plane；The infrared light that the infrared light supply is sent out is imported through second beam splitter, and through first lens set
It is projected afterwards with together with the projected light, and the projected image range on the projection plane can be covered；The injection it is red
Outer light is after being reflected back successively after first lens set, the second beam splitter, the second lens set, the first beam splitter
It is transmitted to the infrared monitoring module.
In another preferred embodiment of the present invention, first beam splitter is set to first lens set and the second eyeglass
Between group；The light that the projection light source the is sent out conduct after second lens set, the first beam splitter, the first lens set successively
Projected light projects, and imaging is on a projection plane；The infrared light that the infrared light supply is sent out is successively through second lens set, first
It is projected together with the projected light after beam splitter, the first lens set, the same area being also imaged on the projection plane；Institute
The infrared light for stating injection is transmitted to the infrared monitoring after first lens set, beam splitter successively after being reflected back
Module.
The case where being set between first lens set and the second lens set for the first beam splitter, can be described second
The second beam splitter is set between lens set and projection light source；The light that the projection light source is sent out first passes through the second light splitting member
Part, then successively after second lens set, the first beam splitter, the first lens set as projected light injection, it is imaged on projection
In plane；The infrared light that the infrared light supply is sent out is imported through second beam splitter, and successively through second lens set,
It is projected together with the projected light after first beam splitter, the first lens set, and the throwing on the projection plane can be covered
Shadow image range.
The case where being set between first lens set and the second lens set for the first beam splitter, the projection light source
It may include that light source synthesis unit and lighting unit, the light source synthesis unit include red light source, green light source, blue-light source；
The infrared light supply is set in the light source synthesis unit, and with the red light source by being projected after identical optical channel.
In the present invention, after excessively described first beam splitter of the optical axis of the infrared monitoring module with the projection objective
The optical characteristics of light shaft coaxle, the projection objective and monitoring object lens can ensure that the focus control is driving first eyeglass
Group is moved forward and backward so that the infrared monitoring picture that the induction chip receives meets the when of clearly requiring, the projection objective also synchronizes
Realize focus.The light path for meeting this synchronous-focusing is characterized as：When the effective area of display chip in the projection module is big
When area of the projected picture in the infrared monitoring picture that can be correspondingly formed on the induction chip, the optics of the monitoring object lens
Enlargement ratio is more than the enlargement ratio of the optical system from first beam splitter to display chip；When in the projection module
The effective area of display chip is less than the area for the infrared monitoring picture that projected picture can be correspondingly formed on the induction chip
When, the optical magnification of the monitoring object lens is less than the amplification of the optical system from first beam splitter to display chip
Multiplying power；It can be correspondingly formed on the induction chip when the effective area of display chip in the projection module is equal to projected picture
Infrared monitoring picture area when, it is described monitoring object lens optical magnification be equal to from first beam splitter to display
The enlargement ratio of the optical system of chip.
In the present invention, reflected from projection plane into the infrared light of induction chip formation infrared monitoring picture
Light angle of the light path at the first lens surface in first lens set should be greater than or equal to projected light described first
Emergent ray angle at lens surface.
In the present invention, first lens set, the second beam splitter, the second lens set can be set as integrally being moved forward and backward
Structure, first beam splitter is set as fixed structure；Then it adds for driving first lens set, the second light splitting member
The focus control that part and the second lens set are integrally moved forward and backward.
In the present invention, first lens set can be also set as to the structure that can be moved forward and backward, second lens set and
One beam splitter is fixed structure；Then the focus control for driving first lens set to be moved forward and backward is added.
In the present invention, the focus control may include focus control module and focus motor, the focusing control module from
The infrared monitoring module receives real-time infrared monitoring signal, and sends out control signal, the focusing to the focusing motor
Motor connect with first lens set and can drive its back-and-forth motion.
By adopting the above-described technical solution, the invention has the characteristics that：1, infrared light supply participates in the imaging of projective module group
When, not only there are visible images on imaging surface, also have infrared light image；It 2, at least can be through when infrared light supply is not involved in imaging
The first lens set crossed in projection light source channel is cast out, and can cover the projected image range on projection plane；3、
Continuous infrared image can be obtained by the first beam splitter and infrared monitoring module；4, focus control is provided with, it can be achieved that certainly
Dynamic focusing function；5, since entire projected picture has been filled with infrared light, it is easy to realize interactive operation function.
Description of the drawings
Fig. 1 is the schematic diagram of conventional projection system；
Fig. 2 is optical projection system schematic diagram in the preferred embodiment of the present invention one；
Fig. 3 is optical projection system schematic diagram in the preferred embodiment of the present invention two；
Fig. 4 is optical projection system schematic diagram in the preferred embodiment of the present invention three；
Fig. 5 is optical projection system schematic diagram in the preferred embodiment of the present invention four；
Fig. 6 is optical projection system schematic diagram in the preferred embodiment of the present invention five；
Fig. 7 is optical projection system schematic diagram in the preferred embodiment of the present invention six；
Fig. 8 is the focusing fundamental diagram in a preferred embodiment of the invention；
Fig. 9 is optical projection system schematic diagram in the preferred embodiment of the present invention seven.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples, the embodiment of the present invention one as shown in Fig. 2,
The projection module of the optical projection system includes projection light source 100 and projection objective 200, further includes infrared light supply in the optical projection system
400。
In the present embodiment, projection light source 100 includes light source synthesis unit 101 and lighting unit 102, light source synthesis unit
101 include red light source 1011, green light source 1012, blue-light source 1013, and be provided with third beam splitter 1014, the 4th point
Optical element 1015, the third beam splitter 1014 in the present embodiment can be by blue light, reflection green light, and the 4th beam splitter 1015 is then
Feux rouges and infrared light can be reflected by blue light and green light.Infrared light supply 400 be set to the light source synthesis unit 101 in, and with it is red
Color light source 101 walks identical optical channel.It, can be by feux rouges, green light, blue light, Yi Jihong by the processing of the light source synthesis unit 101
Outer light is combined, then is transmitted to projection objective 200 through lighting unit 102.Wherein, light source synthesis unit 101 may also include
White light source.
Wherein, infrared light supply 400 may include LED light source and laser light source；Visible light source in light source synthesis unit 101
For LED light source or the mixing light source of laser+LED；Lighting unit includes even optical element (optical wand, compound eye etc.) and optical processor
(LCOS chip and dmd chip).
Further include the first beam splitter 500 and the infrared monitoring module 300 that is attached thereto in the present embodiment；First light splitting
Element 500 is set between the first lens set 201 and the second lens set 202.Wherein, the first beam splitter 500 is two pieces mutually viscous
The right-angle prism 501 connect, the bonding planes 501 of the two right-angle prisms are equipped with spectro-film, effect be transmissive from right to left
Visible light, but can semi-transparent semi-reflecting infrared light from right to left and from left to right, make a part of meeting of reflected infrared light
It is transferred to infrared monitoring module 300.The beam splitter 500 can also be light splitting piece with the same function.
Wherein, feux rouges, green light, the blue light sent out from projection light source 100 is divided member through the second lens set 202, first successively
It is projected as projected light after part 500, the first lens set 201, imaging is on a projection plane；It is sent out from infrared light supply 400 infrared
Light also projects after the second lens set 202, the first beam splitter 500, the first lens set 201 together with projected light successively, also at
As on same projection plane；As can be seen that visible light here and infrared light walked is identical optical channel, it is projected to projection
After plane, it is seen that light is identical with the projected image area of infrared light.The infrared light of injection passes through successively after being reflected back
It is transmitted to infrared monitoring module 300 after first lens set 201, beam splitter 500, is finally received by induction chip 301 therein
And electric signal is converted to, to realize interactive monitoring.
Difference lies in light source synthesis units as shown in figure 3, it is with embodiment illustrated in fig. 2 one for the embodiment of the present invention two
Light built-up sequence in 101 finally adds feux rouges and red from right to left as can be seen that green light before this, then adds blue light
Outer light.Feux rouges, green light, blue light, infrared light after combination are successively through the second lens set 202, the first beam splitter 500, first
It is projected after lens set 201.
The embodiment of the present invention three is as shown in figure 4, the difference of it and embodiment illustrated in fig. 2 one lies also in light source synthesis unit
Light built-up sequence in 101 can be seen that feux rouges and infrared light before this, then adds green light, finally add from right to left
Blue light.
The embodiment of the present invention four is as shown in figure 5, the difference of it and embodiment illustrated in fig. 2 one lies also in light source synthesis unit
Light built-up sequence in 101 can be seen that feux rouges and infrared light before this, then adds blue light, finally add from right to left
Green light.
Difference lies in infrared light supplies 400 to set as shown in fig. 6, it is with embodiment illustrated in fig. 2 one for the embodiment of the present invention five
Outside light source synthesis unit 101, specifically, the second light splitting member is equipped between the second lens set 202 and projection light source 100
Part 600, effect is can be by visible light from right to left, and imports the infrared light that infrared light supply 400 is sent out.At this point, projection
The light that light source 100 is sent out first passes through the second beam splitter 600, then successively through the second lens set 202, the first beam splitter 500,
It is projected as projected light after one lens set 201, imaging is on a projection plane；The infrared light that infrared light supply 400 is sent out is through second point
Optical element 600 import, and successively after the second lens set 202, the first beam splitter 500, the first lens set 201 with projected light one
It rises and projects, and the projected image range on projection plane can be covered.The infrared light of injection is after being reflected back, with implementation
It is identical in example one, and after the first lens set 201, beam splitter 500 it is transmitted to infrared monitoring module 300 successively.
In the above-described embodiments, the optical axis of infrared monitoring module 300 cross after the first beam splitter 500 with projection objective 200
Light shaft coaxle, projection objective 200 and monitoring object lens optical characteristics can ensure that focus control before driving the first lens set 201
It is moved afterwards so that when the infrared monitoring picture that induction chip 301 receives meets clear require, projection objective 200 also gather by synchronous realize
It is burnt clear.The light path for meeting this synchronous-focusing is characterized as：When the effective area of display chip in lighting unit 102 is more than shadowgraph
In the area for the infrared monitoring picture that can be correspondingly formed on induction chip 301, the optical magnification for monitoring object lens is more than in face
From the first beam splitter 500 to the enlargement ratio of the optical system of display chip；When in lighting unit 102 display chip it is effective
Area is less than projected picture in the area for the infrared monitoring picture that can be correspondingly formed on induction chip 301, monitors the light of object lens
Enlargement ratio is learned less than the enlargement ratio from the first beam splitter 500 to the optical system of display chip；When in lighting unit 102
The effective area of display chip is equal to the area for the infrared monitoring picture that projected picture can be correspondingly formed on induction chip 301
When, the optical magnification of object lens is monitored equal to the enlargement ratio from the first beam splitter 500 to the optical system of display chip.
Projected picture herein refers to the part projection plane occupied by the projected image that is formed on projection plane 600.
In the above-described embodiments, it in order to ensure that infrared monitoring does not have dead angle, is reflected from projection plane into induction core
Piece 301 forms ray angles of the light path of the infrared light of infrared monitoring picture at the first lens surface in the first lens set 201
Degree, should be greater than or the emergent ray angle equal to projected light at the first lens surface.
Difference lies in the first beam splitters as shown in fig. 7, it is with embodiment illustrated in fig. 2 one for the embodiment of the present invention six
500, the position of the second beam splitter 600 and infrared light supply 400 is different, and the cemented surface 501 of the first beam splitter 500
Upper plating is to transmit the spectro-film of visible reflectance infrared light, and what is plated on the second beam splitter 600 is that transmission visible light is semi-transparent
The spectro-film of half anti-infrared light.Wherein, the first beam splitter 500 is set between the second lens set 202 and projection light source 100, the
Two beam splitters 600 are set between the first lens set 201 and the second lens set 202.At this point, the light that sends out of projection light source 100 according to
It is secondary to be penetrated as projected light after the first beam splitter 500, the second lens set 202, the second beam splitter 600, the first lens set 201
Go out, imaging is on a projection plane；The infrared light that infrared light supply 400 is sent out is imported through the second beam splitter 600, and through the first eyeglass
It is projected together with projected light after group 201, and the projected image range on projection plane can be covered；The infrared light of injection is in quilt
After reflecting successively after the first lens set 201, the second beam splitter 600, the second lens set 202, the first beam splitter 500
It is transmitted to infrared monitoring module 300.
The embodiment of the present invention seven is as shown in figure 9, it with embodiment illustrated in fig. 2 one is through the difference lies in, infrared light
What five beam splitters 1016 were introduced separately into.When it is implemented, infrared light can also introduce from green light, or introduce from blue light,
Introduced by identical optical channel with green or blue-light source.
It, can be by the first lens set 201, the second beam splitter 600, the second lens set in present invention embodiment shown in Fig. 7
202 are set as the structure that can be integrally moved forward and backward, and the first beam splitter 500 is fixed structure at this time；Then can be arranged for driving
The focus control that first lens set 201, the second beam splitter 600 and the second lens set 202 are integrally moved forward and backward.
In Fig. 2 of the present invention to Fig. 6, embodiment shown in Fig. 9, the first lens set 201 can be set as the knot that can be moved forward and backward
Structure, the second lens set 202 and the first beam splitter 500 are fixed structure at this time；Then can be arranged for driving the first lens set
201 focus controls being moved forward and backward.
Specifically, aforementioned focus control can be manual focusing arrangement, i.e., the image projected by eye-observation
It is whether clear, and then realize focusing.Aforementioned focus control can also be automatic focusing device, as shown in figure 8, focusing dress at this time
It sets including focusing control module and focusing motor, focusing control module receives real-time infrared monitoring from infrared monitoring module 300
Signal (thick lines expression electric signal), and control signal is sent out to focusing motor, focusing motor connect with the projection objective adjusted,
And its back-and-forth motion can be driven.In the embodiment shown in fig. 7, focusing motor can drive the first lens set 201, second light splitting member
Part 600 and the whole back-and-forth motion of the second lens set 202.In Fig. 2 to embodiment shown in fig. 6, focusing motor can drive the
One lens set 201 is moved forward and backward.
As can be seen from the above-described embodiment, one of features of the present invention is can infrared light supply 400 to be set to projection light source 100
Light source synthesis unit 101 in, infrared light supply takes part in the imaging of optical projection system at this time, and optical projection system projects image onto imaging
Not only there are visible images on face after (including screen, wall, blank sheet of paper, glass etc.), on imaging surface, also have infrared light image.
The two of the features of the present invention can also be set to infrared light supply 400 in projection objective or projection objective and projection light source
Between 100, the channel of projection light source is externally introduced by the second beam splitter, at this time infrared light supply do not join optical projection system at
Picture, the infrared light that infrared light supply is sent out can cover the range of entire projected image after projecting module.
The three of the features of the present invention are that the first beam splitter 500 is increased among imaging system, and the first beam splitter 500 can
Expeditiously to transmit visible light, semi-transparent semi-reflecting infrared light, after the infrared light reflection on imaging surface is returned, the first beam splitter
500 can reach by part infrared ray optical direction to infrared monitoring module 300 on induction chip 301 (such as CMOS chip), so as to
Obtain continuous infrared image.
The four of the features of the present invention are provided with focus control, can be seen that the throwing from Fig. 2 to embodiment shown in Fig. 7
The eyeglass of 500 front (left side) of the first beam splitter in shadow system is activity lens set, can be set for these activity lens sets
Set focus control.It can be specifically automatic focusing device, drive these activity lens sets to be moved forward and backward by motor of focusing to reach
To focusing function, projected image is set to be transferred to most clear；Since the installation position of infrared monitoring module determines that it can share these
Activity lens set, when visible images are unintelligible, the monitoring collected infrared image of module is also unintelligible, utilizes focusing at this time
Control circuit sends out control signal to focusing motor and focuses, until infrared image is clear；Again because visible images with it is red
Outer light image is synchronous imaging, so visible images also can be adjusted correspondingly clearly at this time, thereby realizes automatic tune
Burnt function.
The five of the features of the present invention are, since entire projected picture has been filled with infrared light, to work as people with interaction function
Body, finger or other objects enter view field, and the induction chip on infrared monitoring module can collect discrepant figure
Then picture judges the position coordinates and direction of action of human body, finger or other objects using image processing system, to real
Existing interactive operation.
Claims (9)
1. a kind of optical projection system with infrared light supply, including projection module, the projection module include projection light source (100) and throw
Shadow object lens (200), the light that the projection light source (100) sends out is successively through the second lens set in the projection objective (200)
(202), the first lens set (201) is used as projected light to project afterwards；It is characterized in that, further including infrared light supply (400)；
Further include the first beam splitter (500) in the projection objective (200), the infrared light that the infrared light supply (400) sends out
It is at least projected together with the projected light after first beam splitter (500), the first lens set (201), in the system
Further include the infrared monitoring module (300) being connect with first beam splitter (500), infrared monitoring module (300) packet
Include monitoring object lens and induction chip (301)；The infrared light that the infrared light supply (400) sends out after being reflected back at least through
It is transmitted to the infrared monitoring module (300) after first lens set (201), the first beam splitter (500), described first point
Optical element (500) is equipped with spectro-film, so that the projected light passes through, and it is semi-transparent semi-reflecting to infrared light；
Excessively described first beam splitter (500) of the optical axis of the infrared monitoring module (300) afterwards with the projection objective (200)
Light shaft coaxle；
Following relationship should be met between the projection module and infrared monitoring module (300)：When showing core in the projection module
The effective area of piece is more than projected picture in the area for the infrared monitoring picture that can be correspondingly formed on the induction chip, described
The optical magnification for monitoring object lens is more than the times magnification of the optical system from first beam splitter (500) to display chip
Rate；When the effective area of display chip in the projection module is less than what projected picture can be correspondingly formed on the induction chip
When the area of infrared monitoring picture, it is described monitoring object lens optical magnification be less than from first beam splitter (500) to
The enlargement ratio of the optical system of display chip；When the effective area of display chip in the projection module exists equal to projected picture
When the area for the infrared monitoring picture that can be correspondingly formed on the induction chip, the optical magnification of the monitoring object lens is equal to
The enlargement ratio of optical system from first beam splitter (500) to display chip.
2. the optical projection system according to claim 1 with infrared light supply, which is characterized in that first beam splitter
(500) it is set between second lens set (202) and projection light source (100), in first lens set (201) and the second mirror
The second beam splitter (600) is equipped between piece group (202)；The light that the projection light source (100) sends out is successively through described first point
Optical element (500), the second lens set (202), the second beam splitter (600), the first lens set (201) are penetrated as projected light afterwards
Go out, imaging is on a projection plane；
The infrared light that the infrared light supply (400) sends out is imported through second beam splitter (600), and through first eyeglass
Group projects after (201) together with the projected light, and can cover the projected image range on the projection plane；It is described to penetrate
The infrared light gone out is after being reflected back successively through first lens set (201), the second beam splitter (600), the second eyeglass
The infrared monitoring module (300) is transmitted to after group (202), the first beam splitter (500).
3. the optical projection system according to claim 1 with infrared light supply, which is characterized in that first beam splitter
(500) it is set between first lens set (201) and the second lens set (202)；The light that the projection light source (100) sends out according to
It is secondary to be projected as projected light after second lens set (202), the first beam splitter (500), the first lens set (201), at
As on a projection plane；The infrared light that the infrared light supply (400) sends out successively through second lens set (202), first point
Optical element (500), the first lens set project after (201) together with the projected light, are also imaged on same on the projection plane
One region；The infrared light of the injection is after being reflected back successively through first lens set (201), beam splitter (500)
After be transmitted to the infrared monitoring module (300).
4. the optical projection system according to claim 3 with infrared light supply, which is characterized in that in second lens set
(202) the second beam splitter (600) is equipped between projection light source (100)；The light that the projection light source (100) sends out first passes through
Second beam splitter (600), then successively through second lens set (202), the first beam splitter (500), the first eyeglass
Group (201) is used as projected light to project afterwards, and imaging is on a projection plane；Described in the infrared light warp that the infrared light supply (400) sends out
Second beam splitter (600) imports, and successively through second lens set (202), the first beam splitter (500), the first eyeglass
Group projects after (201) together with the projected light, and can cover the projected image range on the projection plane.
5. the optical projection system according to claim 3 with infrared light supply, which is characterized in that projection light source (100) packet
Light source synthesis unit (101) and lighting unit (102) are included, the light source synthesis unit (101) includes red light source, green light
Source, blue-light source；The infrared light supply (400) is set in the light source synthesis unit (101)；The infrared light supply (400) with
The red light source introduces by identical optical channel or introduces from individual passage or pass through with green or blue-light source
Identical optical channel introduces.
6. according to any optical projection system with infrared light supply of any one of claim 1 to 5, which is characterized in that from throwing
Shadow plane reflection backs into the light path of the infrared light of the induction chip (301) formation infrared monitoring picture in first mirror
The light angle at the first lens surface in piece group (201) should be greater than or equal to projected light at first lens surface
Emergent ray angle.
7. the optical projection system according to claim 2 with infrared light supply, which is characterized in that first lens set (201),
Second beam splitter (600), the second lens set (202) are the structure that can be integrally moved forward and backward, first beam splitter (500)
For fixed structure；Further include for driving first lens set (201), the second beam splitter (600) and the second lens set
(202) focus control being integrally moved forward and backward.
8. the optical projection system according to claim 3 with infrared light supply, which is characterized in that first lens set (201)
For the structure that can be moved forward and backward, second lens set (202) and the first beam splitter (500) are fixed structure；Further include using
In the focus control for driving first lens set (201) to be moved forward and backward.
9. the optical projection system according to claim 7 or 8 with infrared light supply, which is characterized in that the focus control includes
Control module of focusing and focusing motor, the focusing control module receive infrared in real time from the infrared monitoring module (300)
Monitoring signal, and control signal is sent out to the focusing motor, the focusing motor is connect with first lens set (201).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2012/087573 WO2014101018A1 (en) | 2012-12-26 | 2012-12-26 | Projection system with infrared light source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105143943A CN105143943A (en) | 2015-12-09 |
| CN105143943B true CN105143943B (en) | 2018-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280076687.6A Active CN105143943B (en) | 2012-12-26 | 2012-12-26 | Optical projection system with infrared light supply |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105143943B (en) |
| WO (1) | WO2014101018A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901277B (en) * | 2017-12-08 | 2021-06-01 | 大立光电股份有限公司 | Electronic device |
| CN107896325A (en) * | 2017-12-15 | 2018-04-10 | 四川长虹电器股份有限公司 | Projection display equipment with interaction function |
| CN112629110B (en) * | 2019-09-24 | 2022-10-28 | 青岛海尔电冰箱有限公司 | Refrigerator with a door |
| CN111290667B (en) * | 2020-01-21 | 2024-04-26 | 维沃移动通信有限公司 | Electronic device, control method thereof, and computer-readable storage medium |
| CN114690300B (en) * | 2022-04-20 | 2023-10-17 | 武汉华星光电技术有限公司 | Display panel and display device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62192716A (en) * | 1986-02-20 | 1987-08-24 | Minolta Camera Co Ltd | Focus detecting device |
| US5537168A (en) * | 1991-04-26 | 1996-07-16 | Canon Kabushiki Kaisha | Projection optical apparatus comprising automatic adjustment unit |
| US5400093A (en) * | 1992-12-28 | 1995-03-21 | U.S. Philips Corporation | Image projection system with autofocusing |
| JP4395792B2 (en) * | 2007-01-29 | 2010-01-13 | セイコーエプソン株式会社 | projector |
| CN201226040Y (en) * | 2008-06-20 | 2009-04-22 | 利达光电股份有限公司 | Large-screen infrared monitoring projection objective |
| CN101750857B (en) * | 2009-12-28 | 2012-07-25 | 武汉全真光电科技有限公司 | LCD (liquid crystal display) projection display system |
| CN102207661A (en) * | 2010-03-29 | 2011-10-05 | 影来腾贸易(上海)有限公司 | Projection type light-uniforming system for touch screen |
| US8434873B2 (en) * | 2010-03-31 | 2013-05-07 | Hong Kong Applied Science and Technology Research Institute Company Limited | Interactive projection device |
| CN203012334U (en) * | 2012-12-26 | 2013-06-19 | 神画科技（深圳）有限公司 | Projection system with infrared light source |
-
2012
- 2012-12-26 WO PCT/CN2012/087573 patent/WO2014101018A1/en active Application Filing
- 2012-12-26 CN CN201280076687.6A patent/CN105143943B/en active Active
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| Publication number | Publication date |
|---|---|
| WO2014101018A1 (en) | 2014-07-03 |
| CN105143943A (en) | 2015-12-09 |
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