CN1331425A - Multi-line synchronous scan type laser projection display system - Google Patents
Multi-line synchronous scan type laser projection display system Download PDFInfo
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- CN1331425A CN1331425A CN 00119157 CN00119157A CN1331425A CN 1331425 A CN1331425 A CN 1331425A CN 00119157 CN00119157 CN 00119157 CN 00119157 A CN00119157 A CN 00119157A CN 1331425 A CN1331425 A CN 1331425A
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- display system
- projection display
- laser
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- line synchronous
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- Mechanical Optical Scanning Systems (AREA)
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Abstract
A laser projection display system of multi-line synchronous scan type features that multiple lines are synchronously scanned by line deflection period for lower requirement to the rotation speed of line deflection drum, and a projection lens set is composed of two lenses for lower requirement to deflected amplitude of scan light beam. Its advantages include large screen size and high brightness.
Description
The invention belongs to laser projection display technology field.
Come out soon in laser technology, just the someone has proposed to make laser beam in succession by two reflective polygon prism reflections of rotation that are called " multiaspect mirror drum ", realize large screen projection technique for displaying scheme, in the seventies in 20th century, laser projection tv system according to the such scheme manufacturing was once once appearring, showed laser light projection display system brightness height to people, colour enriches a series of remarkable advantages such as true to nature, but, because this system requires high to the rotating speed of polygonal mirror drum-type horizontal beam deflector, reach per second thousand and change magnitude (demonstration of common TV image promptly needs 976.5 revolutions per seconds), make horizontal beam deflector motor manufacturing cost height, serviceable life is short, polygonal mirror drum-type laser light projection display system is as short-lived, again silence.From that time, time decades goes over, though various technologies have had great progress, the hard disk that Seagate Technology produces can be under the speed that per minute 15000 changes long-time steady operation, this also only is equivalent to the speed of 250 commentaries on classics p.s., with the requirement that shows the common TV image big gap is arranged more still, fear opinion high resolution displayed television image and computerized image.
The objective of the invention is: reduce of the rotating speed requirement of polygonal mirror drum-type laser light projection display system, make and base oneself upon the long-life high-speed electric expreess locomotive that prior art can be produced in batches, just can make laser projection high resolution displayed TV or computerized image horizontal beam deflector.
The invention discloses a kind of multi-line synchronous scan type laser projection display system, comprise that LASER Light Source, light intensity modulator are (when the LASER Light Source luminous intensity can be modulated, this member can omit), polygonal mirror drum-type horizontal beam deflector, polygonal mirror drum-type field deflection device etc. partly form, it is characterized in that: have into the LASER Light Source that a plurality of glow colors are identical, luminous intensity can be modulated respectively of word order in the system, or have into a plurality of light intensity modulators that can modulate respectively the light intensity of same color laser beam of word order.Make that in deflection cycle of horizontal beam deflector, system can carry out fine scanning synchronously, thereby, under the situation that does not increase polygonal mirror drum-type horizontal beam deflector rotating speed, satisfy requirement to every frame scan line number.
Beneficial effect of the present invention shows: base oneself upon existing process conditions, can realize the Projection Display of low cost, giant-screen, high brightness; It should be noted that especially the laser beam of different rows, different colours, different polarization direction is modulated respectively, can also realize giant-screen, high brightness, Color Stereoscopic Display easily.
Accompanying drawing 1 is a system principle diagram of the present invention, among the figure, and the 1st, the LASER Light Source row, the 2nd, light intensity modulator row (when the LASER Light Source luminous intensity can be modulated, this member can omit), the 3rd, polygonal mirror drum-type horizontal beam deflector, the 4th, polygonal mirror drum-type field deflection device, the 5th, diffuse reflection screen.
Accompanying drawing 2 is most preferred embodiment figure, among the figure, the 1st, the semiconductor laser light resource row that three-color light-emitting intensity can be modulated, the 2nd, polygonal mirror drum-type horizontal beam deflector, the 3rd, polygonal mirror drum-type field deflection device, the 4th, projection lens group (back focal plane of first camera lens, at the front focal plane of second camera lens between the twice front focal plane), the 5th, diffuse reflection screen.
Most preferred embodiment below in conjunction with the present invention, the system works principle is described further: as shown in Figure 2, but launch three row, ten row RGB laser beams by three primary colours modulate intensity semiconductor laser light resource row 1, project by hard disk and drive with high-speed electric expreess locomotive, per second reaches 250 to be changeed, have on the polygonal mirror drum-type horizontal beam deflector 2 of 32 minute surfaces, reflected light acquisition amplitude is the horizontal deflection of 22.5 degree, and then, project by common electric machine and drive, per minute 10 changes, have on the polygonal mirror drum-type field deflection device of 42 minute surfaces, the reflected light complex amplitude is the field deflection of 16 degree, be compounded with the certain amplitude row, the laser beam row at field deflection angle, the luminous point that pools first camera lens back focal plane position that is positioned at projection lens set 4 is listed as second camera lens of projection lens set 4, further on the diffuse reflection screen, form the real image that above-mentioned luminous point row amplify.Throw other luminous point row one by one, utilize persistence of vision, can form that resolution reaches 1000 scan lines * 1400 row, refresh rate reaches 70 times/second high-definition image.Projection lens group 4 can be omitted, and uses the benefit of projection lens group to be: dustproof, and the trip of enlarging projection light beam, field deflection amplitude.
Claims (2)
1. multi-line synchronous scan type laser projection display system, comprise that LASER Light Source, light intensity modulator are (when the LASER Light Source luminous intensity can be modulated, this member can omit), polygonal mirror drum-type horizontal beam deflector, polygonal mirror drum-type field deflection device etc. partly form, it is characterized in that: have into the LASER Light Source that a plurality of glow colors are identical, luminous intensity can be modulated respectively of word order in the system, or have into a plurality of light intensity modulators that can modulate respectively the light intensity of same color laser beam of word order.
2. by the projection lens group in the claim 1 described multi-line synchronous scan type laser projection display system, it is characterized in that: the back focal plane of first camera lens is between the front focal plane and twice front focal plane of second camera lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00119157 CN1331425A (en) | 2000-06-30 | 2000-06-30 | Multi-line synchronous scan type laser projection display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00119157 CN1331425A (en) | 2000-06-30 | 2000-06-30 | Multi-line synchronous scan type laser projection display system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1331425A true CN1331425A (en) | 2002-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00119157 Pending CN1331425A (en) | 2000-06-30 | 2000-06-30 | Multi-line synchronous scan type laser projection display system |
Country Status (1)
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| CN (1) | CN1331425A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004063789A1 (en) * | 2003-01-08 | 2004-07-29 | Qing Shan Wang | A partitioned multi-line scanning laser projector |
| CN100341321C (en) * | 2005-09-30 | 2007-10-03 | 黄革雄 | Laser projector |
| CN104678553A (en) * | 2013-11-26 | 2015-06-03 | 吴小平 | Group scanning laser projection television and multi-area light valve screen matched with same |
| CN106405828A (en) * | 2016-11-21 | 2017-02-15 | 同济大学 | Composite type beam coarse and fine coupling scanning device |
-
2000
- 2000-06-30 CN CN 00119157 patent/CN1331425A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004063789A1 (en) * | 2003-01-08 | 2004-07-29 | Qing Shan Wang | A partitioned multi-line scanning laser projector |
| CN100341321C (en) * | 2005-09-30 | 2007-10-03 | 黄革雄 | Laser projector |
| CN104678553A (en) * | 2013-11-26 | 2015-06-03 | 吴小平 | Group scanning laser projection television and multi-area light valve screen matched with same |
| CN106405828A (en) * | 2016-11-21 | 2017-02-15 | 同济大学 | Composite type beam coarse and fine coupling scanning device |
| CN106405828B (en) * | 2016-11-21 | 2018-12-04 | 同济大学 | The compound coarse-fine coupling scanning means of light beam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |