CN104076584A - Light source system applicable to digital film projecting device, and digital film projecting device - Google Patents
Light source system applicable to digital film projecting device, and digital film projecting device Download PDFInfo
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- CN104076584A CN104076584A CN201310105371.1A CN201310105371A CN104076584A CN 104076584 A CN104076584 A CN 104076584A CN 201310105371 A CN201310105371 A CN 201310105371A CN 104076584 A CN104076584 A CN 104076584A
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Abstract
The invention relates to a light source system applicable to a digital film projecting device, and the digital film projecting device. The light source system comprises a high-pressure mercury lamp light source emitting a beam, a relay lens group, an optical filtering module, a digital microdisplay module, a lens and a screen, wherein the relay lens group is used for receiving the beam and adjusting a travel path of the beam; the optical filtering module is arranged in the travel path of the beam; the lens receives the calibrated beam and projects an image beam; and the beam is subjected to optical calibration in at least one of spectral band and white balance by the optical filtering module, so that the calibrated image beam complies with a color specification of a digital cinema initiative.
Description
Technical field
The present invention relates to a kind of light-source system, espespecially one adopts high-pressure sodium lamp as light source, and is applicable to the light-source system of digital cinema projection device.
Background technology
In digital film domain now, the d-cinema projectors overwhelming majority is the digital projection that uses digital light treatment technology (Digital Light Processing, DLP).And in current digital cinema projection system, show required brightness and (the Digital Cinema Initiative of digital camera alliance in order to reach large-screen, DCI) color standard of institute's specification, generally can adopt xenon lamp as light source, because the spectrum of xenon lamp comparatively approaches daylight, therefore be easier to reach the color standard of institute of digital camera alliance specification, and, total light output area of xenon lamp is very wide, its output power range can be by 1200W to 7000W, therefore be enough to provide ultra-large type screen motion picture projection required.For example, but xenon lamp is still has many shortcomings that are difficult to overcome: bulky, energy consumption efficiency is poor and expensive etc., and these shortcomings can cause the overall volume of d-cinema projectors to be difficult to dwindle, and there is the problems such as cost is higher.
As for general small-sized optical projector, owing to not needing to meet the color standard of institute of digital camera alliance specification, and it is without exporting as the wide area image of the large-screen of movie theatre, therefore most compact optical projector adopts high-pressure sodium lamp (Ultra High Pressure, UHP) as light source, and the advantages such as high-pressure sodium lamp possesses, and cost is lower, small volume and life-span are long, historical facts or anecdotes contributes to reduce the cost of overall optical projector.But, due to the shortcoming of high-pressure sodium lamp be its spectral distribution not as xenon lamp approach natural daylight, therefore high-pressure sodium lamp is applied to digital cinema projection system as wish, it cannot meet by facing the problem that the color of institute of digital camera alliance specification requires.
Therefore, how to develop one and can solve foregoing problems, adopt high-pressure sodium lamp as light source, to reach the target that reduces single unit system volume, reduces costs, more can meet the light-source system that is applicable to digital cinema projection device of the color standard of institute of digital camera alliance specification, real is current problem in the urgent need to address simultaneously.
Summary of the invention
Object of the present invention is for providing a kind of light-source system that is applicable to digital cinema projection device, it adopts high-pressure sodium lamp as light source, and there is optically filtering module, further to adjust output colour gamut, also can carry out the optics adjustment of white balance simultaneously, make its output color can meet the color standard of institute of digital camera alliance specification, more make digital cinema projection device possess the advantages such as more compact, price is cheap and grow serviceable life simultaneously.
For reaching above-mentioned purpose, a better form of implementation of the present invention, for a kind of light-source system is provided, is applicable to digital cinema projection device, and this light-source system comprises: high-pressure sodium lamp light source, sends light beam; Relay lens group, receiving beam, and adjust the travel path of light beam; The micro-display module of numeral; Optically filtering module, is arranged in the travel path of light beam; And camera lens, accept the light beam after adjustment, and project image strip; Wherein, carry out at least optical modulation of one of them of spectral hand and white balance with the light beam that light source is launched by optically filtering module.
For reaching above-mentioned purpose, another better form of implementation of the present invention, for a kind of light-source system is provided, is applicable to digital cinema projection device, and this light-source system comprises: high-pressure sodium lamp light source, sends light beam; Relay lens group, receiving beam, and adjust the travel path of light beam; The micro-display module of numeral; Optically filtering module, is arranged in the travel path of light beam, and has notch filter, and the better notch scope of this notch filter is between 535nm～625nm; And camera lens, accept the light beam after adjustment, and project image strip; Wherein, carry out at least optical modulation of one of them of spectral hand and white balance with the light beam that light source is launched by optically filtering module.
For reaching above-mentioned purpose, another better form of implementation of the present invention, for a kind of digital cinema projection device is provided, comprising: light-source system, comprising: high-pressure sodium lamp light source, sends light beam; Relay lens group, receiving beam, and adjust the travel path of light beam; The micro-display module of numeral; Optically filtering module, is arranged in the travel path of light beam; And camera lens, accept the light beam after adjustment, and project image strip; And screen, use for image strip and project thereon; Wherein, carry out at least optical modulation of one of them of spectral hand and white balance with the light beam that light source is launched by the optically filtering module of light-source system.
Brief description of the drawings
Figure 1A is the configuration diagram of the light-source system that is applicable to digital cinema projection device of the present invention's the first preferred embodiment.
Figure 1B is the configuration diagram of the light-source system that is applicable to digital cinema projection device of the present invention's the second preferred embodiment.
Fig. 2 is the structural representation of two forms of implementation of the optically filtering module of the light-source system shown in Figure 1A.
Fig. 3 A is the spectrogram of the high-pressure sodium lamp light source of the present invention's the first preferred embodiment.
Fig. 3 B is spectrogram the present invention's the first preferred embodiment and the notch filter collocation of high-pressure sodium lamp light source.
High-pressure sodium lamp light source that Fig. 4 is the present invention's the first preferred embodiment, high-pressure sodium lamp light source are in conjunction with the gamut map of the color standard of notch filter and institute of digital camera alliance specification.
Fig. 5 A is the emulation schematic diagram that the spectrum minimum point of the notch filter of the present invention's the first preferred embodiment is positioned at upper specification limit.
Fig. 5 B is the emulation schematic diagram that the spectrum minimum point of the notch filter of the present invention's the first preferred embodiment is positioned at specification lower limit.
Fig. 6 A is the optical attenuator of the present invention's the 3rd preferred embodiment and the spectrogram of notch filter combination.
Fig. 6 B is the comprehensive effect spectrogram through Fig. 6 A.
Fig. 7 A is the optical attenuator of the present invention's the 4th preferred embodiment and the spectrogram of notch filter combination.
Fig. 7 B is the comprehensive effect spectrogram through Fig. 7 A.
Fig. 8 is the spectrogram of the light-source system of the present invention's the first preferred embodiment.
Fig. 9 is the form of implementation of two different penetrances of the notch filter of the light-source system of the present invention's the first preferred embodiment.
Wherein, description of reference numerals is as follows:
1A, 1B: digital cinema projection device
10,20: high-pressure sodium lamp light source
100,101,102,103,200,202,203: light beam
104,204: image strip
11,21: relay lens group
13,22: digital micro-display module
14,24: light-source system
15,23: camera lens
16,26: screen
17,25: optically filtering module
170: optical element
171,171a, 171b: notch filter
172: optical attenuator
18: filter
19: light uniform device
A: the gamut range of visible ray
C: the gamut range of high-pressure sodium lamp light source projector
C ': the white balance of high-pressure sodium lamp light source projector
D: the gamut range of institute of digital camera alliance specification
M ': the white balance after the adjustment of notch filter optics
D ': the white balance of institute of digital camera alliance specification
R: ruddiness
B: blue light
G: green glow
Embodiment
Some exemplary embodiments that embody feature & benefits of the present invention will describe in detail in the explanation of back segment.Be understood that the present invention can have various variations different in form, so it neither departs from the scope of the present invention, and explanation and the graphic use that ought explain in itself wherein, but not in order to limit the present invention.
Referring to Figure 1A is the configuration diagram of the light-source system that is applicable to digital cinema projection device of the present invention's the first preferred embodiment.As shown in the figure, light-source system 14 of the present invention is applicable in digital cinema projection device 1A, and it sees through light-source system 14 so that an image strip 104 is projeced on screen 16.This light-source system 14 comprises the elements such as light source 10, relay lens group 11, optically filtering module 17, digital micro-display module 13 and camera lens 15.In some embodiment, the micro-display module 13 of numeral comprises the optical element such as digital micro-display element (not icon) and relevant point light-combining prism and lens (not icon), and the form of implementation of the micro-display element of numeral wherein can be liquid crystal indicator (LCD), liquid crystal on silicon (LCOS) display device (LCoS) or digital micro-mirror device (DMD) etc., because these forms of implementation belong to conventional and comparatively universal design now, therefore seldom repeat at this.And in the present embodiment, the micro-display module 13 of this numeral is digital micro-mirror device (DMD).
Please continue and consult Figure 1A, as shown in the figure, light source 10 in light-source system 14 of the present invention is a high-pressure sodium lamp (UHP) light source 10, in order to send a light beam 100, the travel path of adjusting light beam via relay lens group 11 forms light beam 102 bright dippings, then carry out modulation by the micro-display module 13 of numeral of digital micro-mirror device (DMD) again and form light beam 103, then, accept light beam 103 by camera lens 15 again, and project image strip 104, so that this image strip 104 is projeced on screen 16, to project an image frame, in the present embodiment, mainly carry out the optics adjustment of spectral hand and/or white balance with the light beam 101 that high-pressure sodium lamp light source 10 is launched by optically filtering module 17, and then make image strip 104 after adjustment meet the color specification of digital camera alliance, and the position that this optically filtering module 17 arranges, can be arranged on the main optical path of light-source system 14, meaning is from light source 10 is launched light beam 100, project image strip 104 in the light path between on screen 16 to camera lens 15, be all the position that optically filtering module 17 can arrange, taking the present embodiment as example, optically filtering module 17 is arranged between relay lens group 11 and digital micro-display module 13, but its set position is as limit, can apply situation and appoint and execute variation according to actual, and such as aforesaid light path position all within protection scope of the present invention.
Refer to Fig. 2, it is the structural representation of two forms of implementation of the optically filtering module of the light-source system shown in Figure 1A.As shown in the figure, optically filtering module 17 of the present invention is by a notch filter (Notch Filter) 171 and an optical attenuator (Neutral Density Filter, ND Filter) 172 form, but not as limit, wherein notch filter 171 is main in order to tackle the light beam of part wavelength, and then to adjust the spectral hand of light beam 102, in order to adjust the white balance of this light beam 102, make it can reach the color specification that meets digital camera alliance as for 172 of optical attenuators.In some embodiment, the notch filter 171 of optically filtering module 17 and optical attenuator 172 can be arranged on the two relative side of same optical element 170 simultaneously, be that it adopts the mode of plated film that two filter membranes are plated on the two opposite sides of being located at optical element 170 simultaneously, make the optical element 170 that this is single can form optically filtering module 17.But; in other embodiment; notch filter 171 and optical attenuator 172 also can be the optical element that two separation arrange; and its set position is not limited to both and need be synchronously oppositely arranged; it is also in the course of the light beam 101,102,103 or 104 of the separable light-source system 14 that is arranged at aforementioned Figure 1A; and before also unrestricted whichever need be arranged at, whichever is rear, allly before image strip 104 is projected to screen 16, undertaken in scope that optics adjustment person all protects in the present invention by this notch filter 171 and optical attenuator 172.
Please continue and consult Figure 1A, taking the present embodiment as example, light-source system 14 of the present invention more can comprise the optical element such as filter 18 and light uniform device 19, but not as limit, wherein filter 18 is arranged at contiguous high-pressure sodium lamp light source 10 places, in order to filtering infrared ray and ultraviolet ray, be arranged between high-pressure sodium lamp light source 10 and relay lens group 11 as for 19 of light uniform devices, be modulated into the equally distributed heart far away (Telecentric) light beam 101 in order to the light beam 100 that high-pressure sodium lamp light source 10 is launched.As previously mentioned, in the present embodiment, optically filtering module 17 is arranged between relay lens group 11 and digital micro-display module 13, but, its set position is not as limit, its preferably setting position be the telecentric beam position that is arranged at light-source system 14, and then can reach preferably adjustment effect.In some embodiment, this telecentric beam position is between relay lens group 11 and digital micro-display module 13, as shown in this embodiment; In other embodiment, set this telecentric beam position of optically filtering module 17 also can be between light uniform device 19 and relay lens group 11, or between the micro-display module 13 of numeral and camera lens 15.As can be seen here, position that optically filtering module 17 can arrange is real has various variation, but it only needs to maintain in the course that is arranged at telecentric beam 101,102,103 or 104, can reach the effect of its optics adjustment.Should be noted that; aforementioned optically filtering module 17 also can be arranged at non-telecentric beam position in practice; though it is poor that its filter effect may be arranged at telecentric beam position, so it can carry out effect of optics adjustment equally, therefore still within protection scope of the present invention.
Refer to Figure 1B, the configuration diagram of the light-source system of its digital cinema projection device that is the present invention's the second preferred embodiment.
As shown in the figure, digital cinema projection device 1B of the present invention comprises light-source system 24 and projects the screen 26 of image frame for light-source system 24, in the present embodiment, light-source system 24 comprises light source 20 equally, relay lens group 21, optically filtering module 25, the optical elements such as the micro-display module 22 of numeral and camera lens 23, wherein the structure of light-source system 24 and set-up mode are roughly similar with previous embodiment, only in the present embodiment, because the micro-display module 22 of numeral is liquid crystal indicator (LCD), therefore the internal optical component of its relay lens group 21 forms slightly partial adjustment.So identical with previous embodiment, the present embodiment adopts high-pressure sodium lamp (UHP) as light source 20 equally, to send a light beam 200, by this relay lens group 21 receive this light beam 200 thereafter, and the optical element that sees through relay lens group 21 inside is to adjust the travel path of light beam 200, become this light beam 202, and light beam 202 is entered in the micro-display module 22 of numeral of liquid crystal indicator (LCD).Be arranged at equally as for 25 of optically filtering modules in the light beam travel path of light-source system 24, to carry out optics adjustment, taking the present embodiment as example, optically filtering module 25 is arranged between relay lens group 21 and digital micro-display module 22, but its set position is not also as limit, and its set position can be on the travel path of telecentric beam 202,203,204 of light-source system 24 equally, and then can reach preferably adjustment effect.Camera lens 23 is accepted the light beam 203 after adjustment, and project image strip 204, so that this image strip 204 is projeced on screen 26, in the present embodiment, mainly carry out at least optics adjustment of one of them of spectral hand and white balance with the light beam 200 that high-pressure sodium lamp light source 20 is launched by optically filtering module 25, and then make image strip 204 after adjustment meet the color specification of digital camera alliance.
Please refer to Figure 1A, 3A, 3B and Fig. 4, the spectrogram of the high-pressure sodium lamp light source that wherein Fig. 3 A is preferred embodiment of the present invention, Fig. 3 B is the spectrogram of notch filter the present invention's the first preferred embodiment and high-pressure sodium lamp light source collocation, and Fig. 4 is for the high-pressure sodium lamp light source of the present invention's the first preferred embodiment, high-pressure sodium lamp light source are in conjunction with the gamut map of the color standard of notch filter and institute of digital camera alliance specification.First, as shown in Figure 3A, as seen because the present embodiment adopts high-pressure sodium lamp light source 10, therefore by the spectrogram of its light beam, its wavelength obviously weakens between the red light intensity of about 600-700nm, and this ruddiness compared to xenon lamp obviously not enough problem be general digital cinema projection device and cannot adopt the principal element of high-pressure sodium lamp as light source.
For instance, the gamut range of institute of digital camera alliance (DCI) specification is as follows:
Red (x, y): x=0.680 ± 0.01, y=0.320 ± 0.01
Green (x, y): x=0.265 ± 0.02, y=0.692 ± 0.02
Blue (x, y): x=0.150+0.01-0.03, y=0.690+0.01-0.04
And the chromaticity coordinates desired value of its white balance is:
(x, y) in vain: x=0.314, y=0.351
Therefore for the high-pressure sodium lamp light source 10 of the present invention of arranging in pairs or groups, the spectrogram of the notch filter 171 that it adopts as shown in Figure 3 B, taking the present embodiment as example, the optical condition of the notch filter 171 that it adopts is as follows: the penetrance between wavelength 420nm～538nm is 97%, penetrance between wavelength 622nm～680nm is 97%, the position of two 50% penetrances of line trap is between wavelength 561nm ± 5nm and 599nm ± 5nm, Xie Du≤the 20nm(of penetrance 30%～90%, in the optical characteristics of notch filter 171 corresponding to Fig. 3 B, the corresponding two sections of wavelength coverages of penetrance 30%～90% are all less than or equal to 20nm), penetrance minimum value is between 15%～19% and the minimum place of penetrance is positioned between wavelength 580nm ± 5nm.First when the spectrum minimum point of considering notch filter 171 is positioned at specification central value 580nm, the light beam 101 of launching when the high-pressure sodium lamp light source 10 of the present embodiment carries out after filtering through this notch filter 171, can be by its colour gamut adjustment as shown in the dotted line scope D of Fig. 4, and the result simulating according to its optical condition is by as shown in the table:
Table one
Analog result is visible thus, redgreenblue light has reached the gamut range of institute of digital camera alliance (DCI) specification all, but white balance coordinate still with the desired value section of having gap, in order to reach white balance desired value, its green glow and blue light intensity still need to adjust again.This adjustment can modulate to reach via optical modulation or via electronics.
Please continue and consult Fig. 4, as shown in the figure, the gamut range A that the scope shown in thick lines is visible ray, solid line triangular form is the original gamut range C that uses the light-source system of high-pressure sodium lamp, its white balance point is C ', in order to make the gamut range C of high-pressure sodium lamp light source 10 reach to level off to the gamut range D of institute of digital camera alliance (DCI) specification, i.e. dotted line scope as shown in FIG., make the light beam that high-pressure sodium lamp light source 10 is launched carry out filtering adjustment through notch filter 171, and then make gamut range after its adjustment level off to the gamut range D of institute of digital camera alliance specification, but, after this adjustment, to make the white balance after adjustment fall within M ' point, though the colour gamut after visible adjustment has met the specification of digital camera alliance, but its white balance M ' but with the specification of digital camera alliance in white balance D ' there is very big difference, in order to reach the desired value of aforementioned white balance, need again green glow should be downgraded to approximately 22%, blue light should downgrade approximately 62%.
Separately, please refer to Fig. 5 A, 5B, it illustrates that respectively the spectrum minimum point of notch filter lays respectively at the emulation schematic diagram of upper specification limit and lower limit.Wherein Fig. 5 A is that the spectrum minimum point of simulation notch filter 171 is positioned at specification and reaches the standard grade as the situation of 585nm, and the result simulating according to its optical condition is as shown in the table:
Table two
Table is visible thus, and its green glow and blue light strength still need to adjust again, and its amplitude that should adjust is that green glow should fall approximately 31%, blue light should fall approximately 64%.
Similarly, if be specification lower limit by the spectrum minimum point of notch filter 171, be the situation of 575nm, as shown in Figure 5 B, and its emulated data is as shown in the table for the result simulating according to its optical condition:
Table three
Table is visible thus, and its green glow and blue light need be adjusted equally, and green glow should fall approximately 10%, blue light should fall approximately 60%.From aforementioned these analog results, see through the notch filter 171 that different wave length arranges, green glow and blue light adjusting range that its follow-up required correspondence is carried out are also not identical.
As aforementioned, this adjustment can modulate to reach via optical modulation or via electronics.But consider when electronics modulation, particularly when the significantly modulation of green, probably can affect the quality of signal of video signal.Therefore wish to reduce as far as possible for the modulation of green intensity.Therefore the optical modulation formula of utilizing optical attenuator 172 is scheme preferably.
Refer to Fig. 6 A, 6B, 7A, 7B, wherein Fig. 6 A is the optical attenuator of the present invention's the 3rd preferred embodiment and the spectrogram of notch filter combination.As previously mentioned, for the light beam of adjustment after notch filter 171, still there is the too high situation of green glow and blue light, therefore optical attenuator 172 that can be different carries out optical modulation again, wherein, optical attenuator 172 as shown in Figure 6A, be better simply two stage optical attenuators, it can be simultaneously by green glow and blue light filtering 15%, is and makes blue light and green glow reduce to 85% of script, and therefore the comprehensive effect spectrum of notch filter 171 and optical attenuator 172 as shown in Figure 6B.In addition, in other embodiment, optical attenuator 172 more can be a triphasic optical attenuator, impose intensity modulated in various degree for green wave band and blue wave band respectively, but not as limit, as shown in Figure 7 A, it is another triphasic optical attenuator 172, and this triphasic green glow of filtering 20% and blue light of filtering 50% of being designed to, thus, the comprehensive effect spectrum of notch filter 171 and optical attenuator 172 can be as shown in Figure 7 B, makes green glow after its adjustment reduce to 80% and blue light reduces to 50%.By the dim light mirror 172 of this different designs and the combination of notch filter 171, carry out the optics adjustment of colour gamut and white balance with the light beam that high-pressure sodium lamp light source 10 is launched, so that it is after the optics adjustment of optically filtering group 17 of the present invention, can be as shown in Figure 8, it can meet the color standard of digital camera alliance, more can avoid the follow-up quality of image loss causing because of electronics adjustment simultaneously.
In principle of design, for the color requirement of to use high-pressure sodium lamp be light source 10 digital cinema projection device 1A reaches digital camera, as shown in Figure 9, the better notch scope of notch filter 171 is between 535nm～625nm, its minimal penetration rate region can be between this scope any place, and minimal penetration rate need be less than 40%.In figure, notch filter 171a and 171b are two kinds of examples that meet the notch filter 171 of different kenels possible under above condition.
In sum, the invention provides a kind of light-source system that is applicable to digital cinema projection device, it adopts high-pressure sodium lamp as light source, and by being arranged at the notch filter of (and better to be positioned at telecentric beam position) in light path and the optically filtering module that optical attenuator was formed, further to adjust output colour gamut, also can carry out the optical modulation of white balance simultaneously, make its output color can meet the color standard of institute of digital camera alliance specification, more make the light-source system of digital cinema projection device can adopt volume little simultaneously, more cheap, the high-pressure sodium lamp of life-span length is as light source, and then can make overall digital motion-picture projection device possess more compact, the advantages such as price is cheap and grow serviceable life.
Can think and be to modify as all by the personage Ren Shi craftsman who is familiar with this skill even if the present invention has been described in detail by the above embodiments, so the scope of neither de-as attached claims institute wish protection.
Claims (15)
1. a light-source system, is applicable to a digital cinema projection device, and this light-source system comprises:
One high-pressure sodium lamp light source, sends a light beam;
One relay lens group, receives this light beam, and adjusts the travel path of this light beam;
One digital micro-display module;
One optically filtering module, is arranged in the travel path of this light beam; And
One camera lens, accepts the light beam after modulation, and projects an image strip;
Wherein, this light beam of by this optically filtering module, this high-pressure sodium lamp light source being launched carries out at least optical modulation of one of them of a spectral hand and a white balance.
2. light-source system as claimed in claim 1, wherein this optically filtering module comprises a notch filter, to adjust the spectral hand of this light beam.
3. light-source system as claimed in claim 2, wherein the notch scope of this notch filter is between 535nm～625nm.
4. light-source system as claimed in claim 3, the wherein any place of the minimal penetration rate region of this notch filter between notch scope 535nm～625nm, and this minimal penetration rate is less than 40%.
5. light-source system as claimed in claim 2, wherein this optically filtering module also comprises an optical attenuator, to adjust the white balance of this light beam.
6. light-source system as claimed in claim 5, wherein this notch filter and this optical attenuator are arranged on the two relative side of an optical element.
7. light-source system as claimed in claim 5, wherein this notch filter and this optical attenuator are arranged at the upper of two different optical elements.
8. light-source system as claimed in claim 1, wherein the set position of this optically filtering module is a heart far away position.
9. light-source system as claimed in claim 8, wherein this heart far away position is between this relay lens group and the micro-display module of this numeral.
10. light-source system as claimed in claim 8, wherein this heart far away position is between the micro-display module of this numeral and this camera lens.
11. light-source systems as claimed in claim 8, wherein the micro-display module of this numeral is digital micro-mirror device.
12. light-source systems as claimed in claim 11, wherein this digital cinema projection system also comprises a light uniform device, it is arranged between this light source and this relay lens group, and set this heart far away position of this optically filtering module is between this light uniform device and this relay lens group.
13. light-source systems as claimed in claim 1, wherein the micro-display module of this numeral be a liquid crystal indicator and a liquid crystal on silicon (LCOS) display device at least one of them.
14. 1 kinds of light-source systems, are applicable to a digital cinema projection device, and this light-source system comprises:
One high-pressure sodium lamp light source, sends a light beam;
One relay lens group, receives this light beam, and adjusts the travel path of this light beam;
One digital micro-display module;
One optically filtering module, is arranged in the travel path of this light beam, and has a notch filter, and the notch scope of this notch filter is between 535nm～625nm; And
One camera lens, accepts the light beam after modulation, and projects an image strip;
Wherein, this light beam of by this optically filtering module, this high-pressure sodium lamp light source being launched carries out at least optical modulation of one of them of a spectral hand and a white balance.
15. 1 kinds of digital cinema projection devices, comprising:
One light-source system, comprising:
One high-pressure sodium lamp light source, sends a light beam;
One relay lens group, receives this light beam, and adjusts the travel path of this light beam;
One digital micro-display module;
One optically filtering module, is arranged in the travel path of this light beam; And
One camera lens, accepts the light beam after modulation, and projects an image strip; And
One screen, uses for this image strip and projects thereon;
Wherein, this light beam of by the optically filtering module of this light-source system, this high-pressure sodium lamp light source being launched carries out at least optical modulation of one of them of a spectral hand and a white balance.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104516181A (en) * | 2014-12-17 | 2015-04-15 | 广东威创视讯科技股份有限公司 | Lighting system, projector and back projection system |
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| CN1605041A (en) * | 2001-12-21 | 2005-04-06 | 3M创新有限公司 | Color pre-filter for single-panel projection display system |
| CN1512260A (en) * | 2002-12-30 | 2004-07-14 | 中强光电股份有限公司 | Multifunctional projection system |
| CN1756991A (en) * | 2003-03-06 | 2006-04-05 | 精工爱普生株式会社 | Projector |
| JP2006078625A (en) * | 2004-09-08 | 2006-03-23 | Seiko Epson Corp | Projector |
| US20070030563A1 (en) * | 2005-06-07 | 2007-02-08 | Unaxis Balzers Ltd. | Multi-bandpass filter for projection arrangements |
| CN201126494Y (en) * | 2007-12-11 | 2008-10-01 | 河南南方辉煌图像信息技术有限公司 | LCOS optical engine system |
| CN101546103A (en) * | 2009-05-05 | 2009-09-30 | 合肥工业大学 | Projection optics engine for true three-dimensional solid-state volume type stereo display system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104516181A (en) * | 2014-12-17 | 2015-04-15 | 广东威创视讯科技股份有限公司 | Lighting system, projector and back projection system |
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