CN104950557A - Micro-projector and image projection method applied to same - Google Patents
Micro-projector and image projection method applied to same Download PDFInfo
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- CN104950557A CN104950557A CN201510382213.XA CN201510382213A CN104950557A CN 104950557 A CN104950557 A CN 104950557A CN 201510382213 A CN201510382213 A CN 201510382213A CN 104950557 A CN104950557 A CN 104950557A
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- pixel cell
- projected
- display unit
- image
- light
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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
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
- G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Projection Apparatus (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a micro-projector and an image projection method applied to the same. According to an embodiment, the micro-projector comprises a light source assembly used for emitting parallel beams to a display assembly, the display assembly comprising arrayed pixel units, a master control assembly electrically connected with the display assembly and used for determining the pixel units corresponding to a to-be-protected image as well as the pixel units corresponding to the to-be-protected image. The pixel units on the display assembly are controlled to be opened and closed, so that at least part of parallel light of the parallel beams is projected to a target interface by the opened pixel units, and a projection image corresponding to the to-be-projected image is generated. Therefore, the projection distance is increased while the micro-projector is applied to wearable equipment or portable equipment.
Description
Technical field
The application relates to electronic device field, is specifically related to smart machine field, particularly relates to micro projector and is applied to the image projecting method of micro projector
Background technology
User, when using electronic equipment, passes through the screen finishing man-machine interaction of electronic equipment usually.At present, in some applications, the mode of being carried out by the object on screen projecting is provided, to make user can by completing alternately the operation of projected image.Conventional projection scheme comprises with under type: DLP (Digital Light Processor, digital light process) projection and LCOS (Liquid Crystal on Silicon, the attached silicon of liquid crystal) projection.Wherein, DLP projection theory is be incident upon on digital micro-mirror device through the colour wheel of High Rotation Speed by light beam, then is incident upon on screen by optical lens and completes projection.The principle of LCOS projection is utilize optical means to be separated with incident light by the picture of reflection, thus projectual is carried out amplification imaging projects on screen.But DLP projection, due to the larger-size problem of its parts comprised, cannot be applied in such as wearable device or portable set.The luminous power that LCOS projection then sends due to its light source is less, limits the projection distance of projection.
Summary of the invention
This application provides micro projector and be applied to the image projecting method of micro projector, for solving the technical matters that above-mentioned background technology part exists.
First aspect, this application provides micro projector, is applied to wearable device or portable set, and this device comprises: light source part, is configured for display unit emitting parallel light bundle; Display unit, comprises the pixel cell be in array-like arrangement; Master control unit, be electrically connected with display unit, be configured for the pixel cell determining correspondence image to be projected, and based on the pixel cell of correspondence image to be projected, control the opening and closing of the pixel cell on display unit, to make the directional light at least partially in parallel beam be projected to target interface via the pixel cell be unlocked, generate and corresponding projected image image to be projected.
In some embodiments, device also comprises: amplifier unit, is arranged between display unit and target interface, is configured for and carries out light amplification to the directional light at least partially in parallel beam.
In some embodiments, amplifier unit comprises convex lens.
In some embodiments, display unit comprises liquid crystal panel.
In some embodiments, light source part comprises laser diode.
In some embodiments, master control unit comprises: first controls subassembly, is configured for and sends the first control signal to display unit, to open the pixel cell of correspondence image to be projected; Second controls subassembly, is configured for and sends the second control signal to display unit, with the pixel cell beyond the pixel cell of closing correspondence image to be projected.
Second aspect, this application provides the image projecting method being applied to micro projector, the method comprises: the light source part emitting parallel light bundle utilizing micro projector; Determine the pixel cell of correspondence image to be projected, pixel cell is the pixel cell that the display unit of micro projector is in array-like arrangement; Based on the pixel cell of correspondence image to be projected, control the opening and closing of the pixel cell on display unit, to make the directional light at least partially in parallel beam be projected to target interface via the pixel cell be unlocked, generate and corresponding projected image image to be projected.
In some embodiments, based on the pixel cell of correspondence image to be projected, the opening and closing controlling the pixel cell on display unit comprise: the pixel cell controlling correspondence image to be projected is opened; Pixel cell beyond the pixel cell controlling correspondence image to be projected is closed.
In some embodiments, also comprise: at the pixel cell based on correspondence image to be projected, after controlling the opening and closing of the pixel cell on display unit, light amplification is carried out to the directional light at least partially in parallel beam.
The micro projector that the application provides and be applied to the image projecting method of micro projector, by light source part to display unit emitting parallel light bundle; Controlled the opening and closing of display unit pixel cell by master control unit, to make the directional light at least partially in parallel beam be projected to target interface via the pixel cell be unlocked, generate and corresponding projected image image to be projected.Thus while being applicable to wearable device or portable set, add the projection distance of projection.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, the other features, objects and advantages of the application will become more obvious:
Fig. 1 shows the structural representation of an embodiment of the micro projector according to the application;
Fig. 2 is the example arrangement schematic diagram being applicable to master control unit;
Fig. 3 is the effect schematic diagram controlling the opening and closing of display unit pixel cell;
Fig. 4 is to the effect schematic diagram projected image to be projected;
Fig. 5 shows the process flow diagram being applied to an embodiment of the image projecting method of micro projector according to the application.
Embodiment
Below in conjunction with drawings and Examples, the application is described in further detail.Be understandable that, specific embodiment described herein is only for explaining related invention, but not the restriction to this invention.It also should be noted that, for convenience of description, in accompanying drawing, illustrate only the part relevant to Invention.
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the application in detail in conjunction with the embodiments.
Please refer to Fig. 1, it illustrates the structural representation of an embodiment of the micro projector according to the application.Device 100 comprises: light source part 101, display unit 102 and master control unit 103.Wherein, light source part 101 is configured for and launches to display unit 102 emitting parallel light bundle; Display unit 102 comprises the pixel cell be in array-like arrangement; Master control unit 103 is electrically connected with display unit 102, be configured for the pixel cell determining correspondence image to be projected, and based on the pixel cell of correspondence image to be projected, control the opening and closing of the pixel cell on display unit 102, to make directional light at least partially in parallel beam via the pixel cell be unlocked to target interface, generate and corresponding projected image image to be projected.
In the present embodiment, light source part 101, display unit 102 and master control unit 103 can be arranged in Wearable device or portable set.Wearable device can include but not limited to intelligent watch, Intelligent bracelet, intelligent glasses etc.Be arranged in Wearable device for light source part 101, display unit 102 and master control unit 103, when Wearable device be configured with directly can be worn on user's wearable body with it time, then light source part 101, display unit 102 and master control unit 103 can be integrated on the body of the wearable device of Wearable.
In the present embodiment, by light source side to target interface, namely form the interface of projected image, light source part 101, display unit 102 and master control unit 103 can be set gradually.Master control unit 103 is by controlling the opening and closing of the pixel cell on display unit 102, directional light at least partially in the parallel beam that light source part 101 is launched to display unit 102 can by the pixel cell opened through display unit 102, project target interface, form projected image.
In the present embodiment, light source part 101 can adopt lasing light emitter (such as semiconductor laser light source).Display unit 102 can adopt flexible display, the multiple pixel cell be in array-like arrangement of tool on display unit 102.It should be noted that, in the present embodiment, display unit 102 can for having the individual components of Presentation Function, also can directly adopt display screen on the wearable device being integrated with light source part 101 as display unit 102.Please refer to Fig. 2, Fig. 2 is the example arrangement schematic diagram being applicable to master control unit 103.In fig. 2, bus interface 201, microprocessor 202, storer 203 is comprised.Bus interface 201 can include but not limited to parallel interface, USB (universal serial bus).Microprocessor 202 can include but not limited to MCU, ARM.Storer 203 can adopt the storage chip being applicable to intelligent electronic device, such as, and EEPROM (Electrically Erasable Programmable Read Only Memory, electric erasing type programmable read only memory), flash chip.Master control unit 103 is electrically connected with display unit 102 by parallel interface or USB (universal serial bus).
Illustrate that master control unit 103 controls the opening and closing of the pixel cell on display unit 102 below in conjunction with Fig. 3, form the principle of projected image.In figure 3, show image 301 to be projected, the pixel cell 302 that image 301 to be projected occupies on display unit, and other pixel cells 303 except the pixel cell 302 that image 301 to be projected occupies on display unit 102.First master control unit 103 determines the pixel cell 302 that image to be projected occupies on display unit 102.Then, when to image to be projected projection, the pixel cell 302 occupied on display unit 102 image to be projected can be opened, close other pixel cells 303 simultaneously.Then, open light source part 101, parallel beam is projected to display unit 102, now, a part of directional light in parallel beam can to project in target interface on (such as body of wall, desktop) through display unit 102 by the pixel cell opened, the directional light except passing the directional light of display unit 102 in parallel beam then other pixel cells 303 pent stops, namely not by display unit 102.Therefore, can be formed in target interface and corresponding projected image image to be projected.
Alternatively, in the present embodiment, Proximity Sensor can also be set on micro projector.Such as, this Proximity Sensor can comprise miniature infrared LED and light sensitive component.Send infrared light by miniature infrared LED, when user operates projected image, a part of light in infrared light can reflect.Light sensitive component according to the light intensity of the light returned, can determine that shelter (hand of such as user) determines touch location, namely to the position of the operation of projected image.
In some of the present embodiment alternatively in implementation, display unit comprises liquid crystal panel.In the present embodiment, display unit can adopt liquid crystal panel, liquid crystal panel can include but not limited to: the array base paltes such as TFT (Thin Film Transistor, thin film transistor (TFT)), STN (Super Twisted Nematic, supertwist nematic).The following describes the process of the directional light in parallel beam through array base palte: array base palte, be filled with liquid crystalline, in array base palte, the side of liquid crystalline is provided with filter dorsad.Because all light sources comprising laser are all made up of horizontal polarization light and orthogonal polarized light two kinds of components, therefore, this filter can be first utilized to carry out filter operation to LASER Light Source, filter out a kind of polarized light in LASER Light Source, and then control another kind of polarized light whether pass through array base palte by changing putting in order of liquid crystalline.Such as, can by applying voltage between the pixel electrode on STN array base palte and public electrode, pixel cell is opened, and then controls putting in order of liquid crystalline, make directional light (polarized light) array base palte can be passed through by on-pixel unit.
In some of the present embodiment alternatively in implementation, master control unit 103 comprises: first controls subassembly, is configured for and sends the first control signal to display unit, to open the pixel cell of correspondence image to be projected; Second controls subassembly, is configured for and sends the second control signal to display unit, with the pixel cell beyond the pixel cell of closing correspondence image to be projected.
In some of the present embodiment alternatively in implementation, device 100 also comprises: amplifier unit (not shown), be arranged between display unit and target interface, be configured for the directional light be at least partially projected in the parallel beam of target interface carries out light amplification via the pixel cell be unlocked.Amplifier unit can adopt convex lens.Project target interface after the parallel laser with image background being amplified by amplifier unit and form projected image, thus can guarantee that the image projected in projection surface meets good visibility.
In some of the present embodiment alternatively in implementation, light source part comprises laser diode.The effect of laser ensures that the optical imagery finally projected in projection surface has certain brightness, guarantees the visuality of projected image under daylighting context.
Please refer to Fig. 4, Fig. 4 is to the effect schematic diagram projected image to be projected.In the diagram, light source part 401 (such as laser diode), display unit 402 (such as STN array base palte), amplifier unit 403 (such as convex lens) and projection interface (such as metope) is shown.Light source part 401 sends parallel beam to display unit 402, simultaneously, the occupied pixel cell image to be projected that display unit 402 is shown is opened, and closes other pixel cells, makes a part of directional light in parallel beam pass display unit 402.Directional light through display unit 402 arrives projection interface 404 after amplifier unit 403 amplifies, and forms projected image.
The application scenarios of the present embodiment can be: when user's applications exploiting wearable device (being such as worn on the intelligent watch on user's arm), controlled the opening and closing of the pixel cell on display unit (LCDs of intelligent watch) by master control unit, the icon be presented on intelligent watch display screen to be projected in target interface on (arm of such as user, metope, desktop).The pixel cell occupied on a display screen by this icon is opened, pixel cell beyond the pixel cell occupied on a display screen by icon is closed, thus a part of directional light in the parallel beam making light source part send is through the pixel cell opened, and forms the projection of this icon.User can be operated the projection of this icon.
The micro projector that the present embodiment provides, by light source part to display unit emitting parallel light bundle; Controlled the opening and closing of display unit pixel cell by master control unit, to make the directional light at least partially in parallel beam be projected to target interface via the pixel cell be unlocked, generate and corresponding projected image image to be projected.Thus while being applicable to wearable device or portable set, add the projection distance of projection.
Please refer to Fig. 5, it illustrates the process flow diagram 500 being applied to an embodiment of the image projecting method of micro projector according to the application.The method comprises the following steps:
Step 501, utilizes the light source part emitting parallel light bundle of micro projector.
In the present embodiment, can utilize the light source part emitting parallel light bundle of micro projector, this micro projector can be installed in wearable device or portable set.
Step 502, determines the pixel cell of correspondence image to be projected.
In the present embodiment, pixel cell can for the pixel cell that the display unit of micro projector is in array-like arrangement.Image to be projected can for being presented at the image on the display unit of micro projector.Based on the pixel cell that display unit is in array-like arrangement, the pixel cell of correspondence image to be projected can be determined, i.e. pixel cell occupied by display unit image to be projected.
Step 503, based on the pixel cell of correspondence image to be projected, controls the opening and closing of the pixel cell on display unit.
In the present embodiment, by controlling the opening and closing of the pixel cell on display display unit, via the pixel cell opened by display unit, projection interface can finally be arrived to make a part of directional light in parallel beam.Correspondingly, pent pixel cell then can stop that in parallel beam, other directional lights pass through display unit.
In some of the present embodiment alternatively in implementation, based on the pixel cell of correspondence image to be projected, the opening and closing controlling the pixel cell on display unit comprise: the pixel cell controlling correspondence image to be projected is opened; Pixel cell beyond the pixel cell controlling correspondence image to be projected is closed.
Alternatively in implementation in some of the present embodiment, also comprise: at the pixel cell based on correspondence image to be projected, after controlling the opening and closing of the pixel cell on display unit, light amplification is carried out to the directional light at least partially in parallel beam.
More than describe and be only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art are to be understood that, invention scope involved in the application, be not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should be encompassed in when not departing from described inventive concept, other technical scheme of being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed simultaneously.The technical characteristic that such as, disclosed in above-mentioned feature and the application (but being not limited to) has similar functions is replaced mutually and the technical scheme formed.
Claims (9)
1. a micro projector, is applied to wearable device or portable set, it is characterized in that, described device comprises:
Light source part, is configured for display unit emitting parallel light bundle;
Display unit, comprises the pixel cell be in array-like arrangement;
Master control unit, be electrically connected with described display unit, be configured for the pixel cell determining correspondence image to be projected, and based on the pixel cell of correspondence image to be projected, control the opening and closing of the pixel cell on display unit, to make the directional light at least partially in described parallel beam be projected to target interface via the pixel cell be unlocked, generate and described corresponding projected image image to be projected.
2. device according to claim 1, is characterized in that, described device also comprises:
Amplifier unit, is arranged between described display unit and described target interface, is configured for and carries out light amplification to the directional light at least partially in described parallel beam.
3. device according to claim 2, is characterized in that, described amplifier unit comprises convex lens.
4. according to the device one of claim 1-3 Suo Shu, it is characterized in that, described display unit comprises liquid crystal panel.
5. device according to claim 4, is characterized in that, described light source part comprises laser diode.
6. device according to claim 5, is characterized in that, described master control unit comprises:
First controls subassembly, is configured for and sends the first control signal to described display unit, to open the pixel cell of described correspondence image to be projected;
Second controls subassembly, is configured for and sends the second control signal to described display unit, with the pixel cell beyond the pixel cell of closing described correspondence image to be projected.
7. be applied to an image projecting method for micro projector, it is characterized in that, described method comprises:
Utilize the light source part emitting parallel light bundle of described micro projector;
Determine the pixel cell of correspondence image to be projected, described pixel cell is the pixel cell that the display unit of micro projector is in array-like arrangement;
Based on the pixel cell of described correspondence image to be projected, control the opening and closing of the pixel cell on described display unit, to make the directional light at least partially in described parallel beam be projected to target interface via the pixel cell be unlocked, generate and corresponding projected image image to be projected.
8. method according to claim 7, is characterized in that, the described pixel cell based on described correspondence image to be projected, and the opening and closing controlling the pixel cell on described display unit comprise:
The pixel cell controlling correspondence image to be projected is opened;
Pixel cell beyond the pixel cell controlling correspondence image to be projected is closed.
9. according to the method one of claim 7-8 Suo Shu, it is characterized in that, described method also comprises: at the described pixel cell based on described correspondence image to be projected, after controlling the opening and closing of the pixel cell on described display unit, light amplification is carried out to the directional light at least partially in described parallel beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510382213.XA CN104950557A (en) | 2015-07-02 | 2015-07-02 | Micro-projector and image projection method applied to same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510382213.XA CN104950557A (en) | 2015-07-02 | 2015-07-02 | Micro-projector and image projection method applied to same |
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| CN104950557A true CN104950557A (en) | 2015-09-30 |
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| CN201510382213.XA Pending CN104950557A (en) | 2015-07-02 | 2015-07-02 | Micro-projector and image projection method applied to same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106878693A (en) * | 2017-03-01 | 2017-06-20 | 京东方科技集团股份有限公司 | A kind of display device, display device control method and display control program |
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- 2015-07-02 CN CN201510382213.XA patent/CN104950557A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106878693A (en) * | 2017-03-01 | 2017-06-20 | 京东方科技集团股份有限公司 | A kind of display device, display device control method and display control program |
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