CN106686362A - Horizontal correcting device for projected image - Google Patents
Horizontal correcting device for projected image Download PDFInfo
- Publication number
- CN106686362A CN106686362A CN201710145022.0A CN201710145022A CN106686362A CN 106686362 A CN106686362 A CN 106686362A CN 201710145022 A CN201710145022 A CN 201710145022A CN 106686362 A CN106686362 A CN 106686362A
- Authority
- CN
- China
- Prior art keywords
- projected image
- projected
- dmd chip
- correcting device
- horizontal
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention discloses a horizontal correcting device for a projected image. The horizontal correcting device is characterized in that a CCD camera is arranged in the correcting device; after the projected image is collected by the CCD camera, the projected image is sent to an embedded type processor for processing; and after a horizontal angle of the projected image is judged by the embedded type processor, a DMD chip on a DLP circuit board is driven to rotate by a rotating stepping motor under the driving of a motor driving circuit. With such a structure, the horizontal correcting device can achieve a horizontal correcting function without regular calibration in a use process, and meanwhile, the horizontal correcting precision is not influenced following the increasing of the use time.
Description
Technical field
The present invention relates to the technological improvement of projector, more particularly to a kind of projected image level correction device.
Background technology
As projector is in the increasingly extensive use of various occasions, requirement of the people to projection quality also more and more higher.Throw
The undesirable of shadow quality is mainly reflected in two aspects：On the one hand it is that projected image can not accurately focus, so as to cause projection
It is image blurring, on the other hand it is that projected image is nonstandard, there is trapezoidal distortion and horizontal tilt.
Existing projector is mostly the detection that angle of inclination is carried out by the horizon sensor inside projector, then
The deviation for correcting projected image horizontal tilt is gone by the method for software or hardware.But user is needed in use to throwing
The horizon sensor of shadow instrument carries out periodic calibration.And projector is in use, its internal temperature can be with use time
Increase and rise, and horizon sensor of the prior art can have " temperature drift " with the rising of temperature, sensor
Precision can substantially reduce, further impact can be produced on projector on the correction of image.
For the problems referred to above, there is provided a kind of new level correction device, the level correction of projected image is automatically obtained
Guarantee correction accuracy simultaneously.
The content of the invention
The technical problem to be solved is to provide a kind of projected image level correction device, is being automatically obtained throwing
Guarantee correction accuracy while the level correction of shadow image.
To reach above-mentioned purpose, the technical scheme is that, a kind of projected image level correction device, its feature exists
In：It is provided with feeding flush bonding processor after CCD camera acquired projections picture in described correcting unit to be processed, it is embedded
Processor judges to drive rotating stepper motor to drive on DLP circuit boards by motor-drive circuit after the level angle of projected image
Dmd chip rotate.
Described dmd chip projects projected picture by projection lens on curtain.
High bright light source direct irradiation dmd chip is provided with inside described projector.
A kind of projected image level correction device, because using above-mentioned structure, the present invention is not required to during use
Regularly being calibrated can just complete the function of rectification, and with the increase of use time, the essence of rectification
Degree also will not be affected.
Description of the drawings
With reference to the accompanying drawings and detailed description the present invention is further detailed explanation；
Fig. 1 is a kind of structured flowchart of projected image level correction device of the invention；
Fig. 2 is a kind of structural representation of projected image level correction device of the invention；
In Fig. 1-2,1. flush bonding processor；2nd, CCD camera；3rd, motor-drive circuit；4th, rotating stepper motor；
5th, high bright light source；6th, DLP circuit boards；7th, dmd chip；8th, projection lens；9th, projected picture.
Specific embodiment
The present invention using DLP technologies realize projected image from dynamic(al) correction.DLP is " Digital Light
The abbreviation of Processing ", as digital optical processing, that is to say, that this technology is wanted first signal of video signal through digital processing,
Then again optical projection out.Light source is reflected on dmd chip after colour wheel, and dmd chip is receiving the control of panel
Light is transmitted on projection screen after signal.Dmd chip outward appearance seems a simply small pieces mirror, is encapsulated in metal and glass
In the confined space of glass composition, in fact, this face mirror is made up of a hundreds thousand of or even up to a million micro mirror.The work of DMD
It is exactly the light that needs are reflected by micro-mirror device as principle, while absorbing unwanted light to realize image by light absorber
Projection, and its direction of illumination is then, by electrostatic interaction, to be realized by controlling micromirror angle.Eyeglass can be in one second
Switch more than 1000 times, in this, DLP becomes a simple optical system.Projector on market is widely used
Optical projection system is exactly the optical system that DLP is constituted：When DMD seat boards, projecting lamp, projection lens collaborative work, these are stirred
Minute surface just can together reflect the image onto demonstration metope, on motion picture screen or television screen.
Specifically as shown in Figure 1-2, it is provided with after the acquired projections picture 9 of CCD camera 2 in the present invention and sends into flush bonding processor
1 is processed, and flush bonding processor 1 judges to drive rotation stepping by motor-drive circuit 3 after the level angle of projected image 9
Motor 4 drives the dmd chip 7 on DLP circuit boards 6 to rotate.Dmd chip 7 projects shadowgraph by projection lens 8 on curtain
Face 9.It is provided with inside projector on the direct irradiation dmd chip 7 of high bright light source 5.
The present invention is acquired by CCD camera 2 to projected picture 9, and being transferred to flush bonding processor 1 is carried out at image
Reason, determines that controlled motor drive circuit 3 drives rotating stepper motor 4 to rotate corresponding need after the level inclination of projected picture 9
The angle to be corrected, rotating stepper motor 4 and DLP circuit boards 6 be to be mechanically connected, therefore DLP circuit boards 6 and plate are loaded with
Dmd chip 7 can also turn over corresponding angle correction, due to the rotation of dmd chip 7, by projection lens 8 projected picture be projected
9, corresponding angle correction can be also turned over, so as to reach the purpose of the rectification of projected picture 9.
High bright light source 5 sends the directional light of high brightness and is incident upon on dmd chip 7, and dmd chip 7 is receiving DLP circuit boards
Light is reflexed on projection lens 8 after 6 control signal, through the amplification of projection lens 8 projected picture 9 is projected out.Work as throwing
When the occurred level of shadow picture 9 is inclined, it is corresponding that rotating stepper motor 4 will drive DLP circuit boards 11 and dmd chip 12 to rotate
Angle correction, while projected picture 9 can also correct corresponding angle, so as to reach the purpose of the rectification of projected picture 9.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention is implemented and do not receive aforesaid way
Restriction, it is or not improved directly applying to other occasions as long as employing the various improvement that technical solution of the present invention is carried out,
Within protection scope of the present invention.
Claims (3)
1. a kind of projected image level correction device, it is characterised in that：It is provided with CCD camera (2) in described correcting unit to adopt
Collection projected picture (9) is sent into afterwards flush bonding processor (1) and is processed, and flush bonding processor (1) judges the water of projected image (9)
Rotating stepper motor (4) is driven to drive the dmd chip (7) on DLP circuit boards (6) by motor-drive circuit (3) after straight angle degree
Rotate.
2. a kind of projected image level correction device according to claim 1, it is characterised in that：Described dmd chip (7)
Projected picture (9) is projected on curtain by projection lens (8).
3. a kind of projected image level correction device according to claim 1, it is characterised in that：Inside described projector
It is provided with high bright light source (5) direct irradiation dmd chip (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145022.0A CN106686362A (en) | 2017-03-13 | 2017-03-13 | Horizontal correcting device for projected image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145022.0A CN106686362A (en) | 2017-03-13 | 2017-03-13 | Horizontal correcting device for projected image |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106686362A true CN106686362A (en) | 2017-05-17 |
Family
ID=58826133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710145022.0A Pending CN106686362A (en) | 2017-03-13 | 2017-03-13 | Horizontal correcting device for projected image |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106686362A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109788266A (en) * | 2019-02-20 | 2019-05-21 | 苏州科技大学 | A kind of packaged type Image Acquisition and projection arrangement |
| WO2020078187A1 (en) * | 2018-10-19 | 2020-04-23 | 深圳光峰科技股份有限公司 | Projector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241058C (en) * | 2003-01-23 | 2006-02-08 | 浙江大学 | Object plane adjustment method of optical projection system based on defocus depth analysis and its device |
| CN105163054A (en) * | 2015-10-22 | 2015-12-16 | 高国华 | Wireless ultrashort-focus projector system and method compatible with video acquisition |
| CN105353576A (en) * | 2015-11-25 | 2016-02-24 | 广景视睿科技（深圳）有限公司 | Projector |
| CN106125468A (en) * | 2016-06-29 | 2016-11-16 | 海信集团有限公司 | A kind of multi-direction projector equipment and method |
-
2017
- 2017-03-13 CN CN201710145022.0A patent/CN106686362A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241058C (en) * | 2003-01-23 | 2006-02-08 | 浙江大学 | Object plane adjustment method of optical projection system based on defocus depth analysis and its device |
| CN105163054A (en) * | 2015-10-22 | 2015-12-16 | 高国华 | Wireless ultrashort-focus projector system and method compatible with video acquisition |
| CN105353576A (en) * | 2015-11-25 | 2016-02-24 | 广景视睿科技（深圳）有限公司 | Projector |
| CN106125468A (en) * | 2016-06-29 | 2016-11-16 | 海信集团有限公司 | A kind of multi-direction projector equipment and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020078187A1 (en) * | 2018-10-19 | 2020-04-23 | 深圳光峰科技股份有限公司 | Projector |
| CN109788266A (en) * | 2019-02-20 | 2019-05-21 | 苏州科技大学 | A kind of packaged type Image Acquisition and projection arrangement |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170517 |