CN105988268B - Projection imaging system - Google Patents
Projection imaging system Download PDFInfo
- Publication number
- CN105988268B CN105988268B CN201510041220.3A CN201510041220A CN105988268B CN 105988268 B CN105988268 B CN 105988268B CN 201510041220 A CN201510041220 A CN 201510041220A CN 105988268 B CN105988268 B CN 105988268B
- Authority
- CN
- China
- Prior art keywords
- light
- polarization state
- light beam
- polarization
- excitation
- 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.)
- Active
Links
- 238000003384 imaging method Methods 0.000 title claims abstract description 36
- 230000010287 polarization Effects 0.000 claims abstract description 306
- 230000005284 excitation Effects 0.000 claims abstract description 113
- 238000006243 chemical reaction Methods 0.000 claims abstract description 70
- 230000003287 optical effect Effects 0.000 claims abstract description 47
- 238000001228 spectrum Methods 0.000 claims abstract description 20
- 239000004973 liquid crystal related substance Substances 0.000 claims description 78
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 72
- 229910052710 silicon Inorganic materials 0.000 claims description 72
- 239000010703 silicon Substances 0.000 claims description 72
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000003595 spectral effect Effects 0.000 claims description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 9
- 238000012545 processing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
Landscapes
- Polarising Elements (AREA)
Abstract
The invention discloses a kind of projection imaging system.Wherein, which includes：Light source module group, for being sequentially emitted at least two-beam, at least light beam at least in two-beam is wide spectrum optical；First polarizing component state；First wave length selects polarization converter device；Polarization spectro optics；Light source module group includes：Excitation source, for producing the exciting light of constant polarisation state；Light splitting device, for the exciting light of constant polarisation state to be divided at least two-beam transmitted along different light paths in a manner of timesharing, wherein, at least two-beam includes at least the first excitation beam and the second excitation beam；First wave length conversion equipment, for the first excitation beam to be converted to wide spectrum optical.The present invention is solved using the relatively low technical problem of the projection efficiency caused by existing projection imaging system.
Description
Technical Field
The invention relates to the technical field of optics, in particular to a projection imaging system.
Background
Nowadays, Liquid Crystal On Silicon (LCOS) projection imaging systems have been applied to various scenes in life, wherein the LCOS projection imaging systems generally adopted by those skilled in the art are generally single-chip LCOS projection systems or three-chip LCOS projection systems, and Light bulbs or Light Emitting Diodes (LEDs) are used as Light sources. Further, the imaging principle of the monolithic LCOS projection system can be as shown in fig. 1, where 101 is a light source, 102 is a PBS prism, 103 is an LCOS chip, and 104 is a projection lens. The light source 101 may be a light bulb or an LED light source, which sequentially emits sequential red, green, and blue lights, and when the light passes through the 102PBS prism, the light with a certain polarization state (e.g., S light) is reflected onto the 103LCOS chip for modulation, and after modulation, the polarization state is deflected by 90 degrees, and then the light passes through the PBS prism and enters the projection lens 104, and finally the formed monochromatic image will form a color image through the integration effect of human eyes. The imaging principle of the three-chip LCOS projection system can be as shown in fig. 2, in which 201 is a light source, 202, 203, 204 are dichroic chips, 205, 207, 209 are PBS prisms, 206, 208, 210 are LCOS chips for processing blue, red, green light, respectively, and 211 is an X-cube three-color light-combining prism. The light source 201 is a bulb or an LED light source, and is divided into red, green, and blue tricolor lights after passing through dichroic plates 202, 203, and 204, the three light beams form a lighting source of a responsive LCOS panel after passing through PBS prisms 205, 207, and 209, and then are emitted after being modulated on the LCOS, and monochromatic light images formed after being combined at a three-color light combining prism 211 are finally superimposed through space to form a color image.
However, when the projection imaging system provided in the prior art is adopted, the lighting effect is poor, the brightness is low, three primary colors are obtained in sequence, and the imaging period is long, so that the imaging cost is increased, meanwhile, the projection imaging time is greatly increased, and the projection service life of the projection system is seriously influenced.
Aiming at the problems in the prior art, no effective solution is provided at present.
Disclosure of Invention
The embodiment of the invention provides a projection imaging system, which at least solves the technical problem of short projection service life caused by the adoption of the existing projection imaging system.
According to an aspect of an embodiment of the present invention, there is provided a projection imaging system including: the light source module is used for emitting at least two beams of light in sequence, at least one beam of light in the at least two beams of light is wide-spectrum light, and the combined light of the at least two beams of light comprises tricolor light; a first polarization element, disposed in a transmission optical path of the broad spectrum light of the light source module, for converting a polarization state of the broad spectrum light into a first polarization state; a first wavelength selective polarization conversion device disposed in a rear optical path of the first polarizer, for converting the broad spectrum light of the first polarization state into a first light beam having the first polarization state and a second light beam having a second polarization state, wherein the first polarization state and the second polarization state are perpendicular to each other, and the first light beam and the second light beam have different spectral ranges; a polarization beam splitting and combining device disposed in a rear optical path of the first wavelength selective polarization conversion device, and configured to transmit the first light beam with the first polarization state to the first liquid crystal on silicon along a first optical path, transmit the second light beam with the second polarization state to the second liquid crystal on silicon along a second optical path, and combine and emit light beams emitted from the first liquid crystal on silicon and the second liquid crystal on silicon; wherein above-mentioned light source module includes: the excitation light source is used for generating excitation light in a constant polarization state; a polarization beam splitter, disposed in the transmission optical path of the excitation light, for splitting the excitation light in the constant polarization state into at least two beams of light transmitted along different optical paths in a time-sharing manner, where the at least two beams of light include at least a first excitation light beam and a second excitation light beam; and a first wavelength conversion device disposed in a transmission optical path of the first excitation light beam, for converting the first excitation light beam into the broad spectrum light.
Optionally, the polarization beam splitter includes: a second polarizing element for converting the excitation light of the constant polarization state into at least excitation light of a first polarization state and excitation light of a second polarization state in a time-sharing manner, the first polarization state and the second polarization state being perpendicular to each other; the first polarization beam splitter is configured to split the excitation light having the first polarization state and the excitation light having the second polarization state into a first excitation light beam having the first polarization state and a second excitation light beam having the second polarization state, which are transmitted along different optical paths, and transmit the first excitation light beam having the first polarization state to the first wavelength converter.
Optionally, the light source module further includes: and a second wavelength conversion device disposed in a transmission optical path of the second excitation light beam, for converting the second excitation light beam into the broad spectrum light, so that the light source module sequentially emits the broad spectrum light converted by the first wavelength conversion device and the broad spectrum light converted by the second wavelength conversion device.
Optionally, the system further includes: a third polarizing element provided in a transmission optical path of the broad spectrum light converted by the second wavelength conversion device, for converting a polarization state of the broad spectrum light converted by the second wavelength conversion device into a first polarization state; a second wavelength selective polarization conversion device disposed in a rear optical path of the third polarizing element, for converting the broad spectrum light in the first polarization state into a third light beam having the first polarization state and a fourth light beam having a second polarization state, wherein the first polarization state and the second polarization state are perpendicular to each other, and the third light beam and the fourth light beam have different spectral ranges.
Optionally, the light source module further includes: and the scattering device is arranged in the transmission light path of the second excitation light beam and is used for scattering the second excitation light beam so as to enable the light source module to emit the wide-spectrum light and the scattered second excitation light beam in sequence.
Optionally, the system further includes: an optical relay element, disposed in a transmission optical path of the scattered second excitation light beam, for guiding the scattered second excitation light beam to an optical combining component; the light combining member is configured to combine the first light beam having the first polarization state and the second light beam having the second polarization state emitted from the wavelength selective polarization conversion device, and the scattered second excitation light beam emitted from the optical relay element, and emit the combined light beam to the polarization beam splitting and combining device.
Optionally, the first liquid crystal on silicon substrate is configured to modulate the first light beam with the first polarization state, convert the first light beam into the first light beam with the second polarization state, and emit the first light beam with the second polarization state to the polarization beam splitting and combining device; the second liquid crystal on silicon sheet is configured to modulate and convert the second light beam with the second polarization state into the second light beam with the first polarization state, and emit the second light beam with the first polarization state to the polarization beam splitting and combining device.
Optionally, the polarization beam splitting and combining device is further configured to combine the first light beam with the second polarization state emitted from the first liquid crystal on silicon and the second light beam with the first polarization state emitted from the second liquid crystal on silicon and emit the combined light beam.
Optionally, the system further includes: a wavelength selective analyzer disposed in a rear optical path of the polarization beam splitter/combiner, and configured to selectively transmit a light beam combined by the polarization beam splitter/combiner, where the light beam combined by the polarization beam splitter/combiner is a light beam combined by the polarization beam splitter/combiner and emitted from the first silicon-based liquid crystal panel and the second silicon-based liquid crystal panel; and the lens is used for projecting and imaging the light beam emitted by the polarization analyzing device according to the wavelength.
Optionally, the wavelength selective analyzer transmits the second excitation light beam, and the first light beam having the first polarization state and the second light beam having the second polarization state.
Optionally, the second excitation light beam is blue light, the first light beam with the first polarization state is green light with the first polarization state, and the second light beam with the second polarization state is red light with the second polarization state; or, the second excitation light beam is blue light, the first light beam with the first polarization state is red light with the first polarization state, and the second light beam with the second polarization state is green light with the second polarization state.
In the embodiment of the invention, the light source module performs polarization splitting processing on excitation light in a constant polarization state generated by the excitation light source to obtain a first excitation light beam and a second excitation light beam, the first excitation light beam is guided to the first wavelength conversion device to be converted into broad spectrum light, the broad spectrum light is further adjusted to be in the first polarization state by the first polarization component, and the broad spectrum light in the first polarization state is further processed by the wavelength selective polarization conversion device to obtain the first light beam in the first polarization state and the second light beam in the second polarization state, so that the polarization splitting and combining device performs splitting and combining processing on the light beams emitted by the light source module, and an image is finally formed. Through the system, the exciting light with higher exciting efficiency and a constant polarization state is converted into light beams with different polarization states respectively and is distributed to the first silicon-based liquid crystal plate and the second silicon-based liquid crystal plate respectively, so that the energy on the two silicon-based liquid crystal plates is more balanced, the heat dissipation of the system is facilitated, the service life of a projection system is prolonged, and the light efficiency of imaging is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of an alternative projection imaging system according to the prior art;
FIG. 2 is a schematic diagram of an alternative projection imaging system according to the prior art;
FIG. 3 is a schematic diagram of an alternative projection imaging system according to embodiments of the present invention;
FIG. 4 is a schematic view of an alternative projection imaging system according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of yet another alternative projection imaging system in accordance with an embodiment of the present invention;
FIG. 6 is a schematic diagram of yet another alternative projection imaging system in accordance with an embodiment of the present invention; and
FIG. 7 is a schematic diagram of yet another alternative projection imaging system in accordance with embodiments of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to an embodiment of the present invention, there is provided a projection imaging system including a first liquid crystal on silicon substrate and a second liquid crystal on silicon substrate, as shown in fig. 3, the system further includes:
1) the light source module 302 is configured to sequentially emit at least two beams of light, where at least one of the at least two beams of light is a wide-spectrum light, and a combined light of the at least two beams of light includes tricolor light;
2) the first polarization component 304 is arranged in a transmission optical path of the broad spectrum light of the light source module and used for converting the polarization state of the broad spectrum light into a first polarization state;
3) a first wavelength selective polarization conversion device 306 disposed in a rear optical path of the first polarizer, for converting the wide-spectrum light in the first polarization state into a first light beam having the first polarization state and a second light beam having the second polarization state, where the first polarization state and the second polarization state are perpendicular to each other, and the first light beam and the second light beam have different spectral ranges;
4) the polarization beam splitting and combining device 308 is arranged in a rear-end optical path of the first wavelength selective polarization conversion device and is used for transmitting a first light beam with a first polarization state to the first silicon-based liquid crystal plate along the first optical path, transmitting a second light beam with a second polarization state to the second silicon-based liquid crystal plate along the second optical path, and combining and emitting the light beams emitted by the first silicon-based liquid crystal plate and the second silicon-based liquid crystal plate;
the light source module 302 includes:
(1) an excitation light source 3020 for generating excitation light of a constant polarization state;
(2) the polarization beam splitting device 3022 is disposed in the transmission light path of the excitation light, and is configured to split the excitation light in the constant polarization state into at least two beams of light transmitted along different light paths in a time-sharing manner, where the at least two beams of light include at least a first excitation light beam and a second excitation light beam;
(3) a first wavelength conversion device 3024, disposed in the transmission optical path of the first excitation light beam, for converting the first excitation light beam into broad spectrum light.
Alternatively, in this embodiment, the projection imaging system may be, but not limited to, applied to a Liquid Crystal On Silicon (LCOS) structure, for example, the excitation light with a constant polarization state generated by an excitation light source is split by a polarization splitting device to obtain at least two beams, where at least one beam is to be converted into a broad spectrum light by a wavelength conversion device. Further, the broadband light is polarized and subjected to wavelength selective polarization conversion processing to obtain a first light beam with a first polarization state and a second light beam with a second polarization state. Further, after the light beams generated in the system are respectively transmitted to the first silicon-based liquid crystal plate and the second silicon-based liquid crystal plate according to different polarization states, the light beams emitted by combining the first silicon-based liquid crystal plate and the second silicon-based liquid crystal plate are used for projection imaging. The above is only an example, and the present embodiment is not limited to this.
It should be noted that, be different from current monolithic formula LCOS projection system and three formula LCOS projection systems, the double-disk LCOS structure is adopted to this embodiment, the cost and the light efficiency of system have been taken into account, furthermore, adopt the exciting light of invariable polarization state as the light source, excitation efficiency is higher, and carry out beam splitting treatment to the exciting light through polarization beam splitting device, in order to obtain two at least bundles of light, thereby be convenient for carry out corresponding processing to above-mentioned light beam respectively, so that it is more balanced to make the light energy that exits on two LCOS, be favorable to the heat dissipation of system, and then realize this system high light efficiency, long-life advantage.
Optionally, in this embodiment, the wide spectrum light converted from the first excitation light beam may include, but is not limited to, at least one of the following: single primary color broad spectrum light, including at least two primary color broad spectrum light. Broad spectrum light refers to light that is spectrally continuous and covers a wavelength range of at least 10 nm. In this embodiment, when the wide-spectrum light is single-fundamental-color wide-spectrum light, the first light beam having the first polarization state and the second light beam having the second polarization state are metameric-spectrum light, and when the wide-spectrum light is wide-spectrum light including at least two types of fundamental light, the first light beam having the first polarization state and the second light beam having the second polarization state are different fundamental light, respectively. In the embodiment of the present invention, the single primary color broad spectrum light refers to light having a spectral range within the spectral range of one primary color light, and the broad spectrum light of two primary color lights refers to light having a spectral range covering the spectral ranges of two primary color lights, such as cyan light, magenta light, yellow light, and the like.
Further, the first excitation light beam may be, but not limited to, a broad spectrum light obtained by wavelength conversion, and the combined light with the second excitation light beam is a tricolor light, where the tricolor light includes: red light, green light and blue light. In this embodiment, the second excitation light may also be wavelength-converted to obtain broad-spectrum light.
Optionally, in this embodiment, the second excitation light beam may be, but is not limited to, blue light, and the first light beam having the first polarization state and the second light beam having the second polarization state may include the following two cases:
1) the second excitation light beam is blue light, the first light beam with the first polarization state is green light with the first polarization state, and the second light beam with the second polarization state is red light with the second polarization state;
2) the second excitation light beam is blue light, the first light beam with the first polarization state is red light with the first polarization state, and the second light beam with the second polarization state is green light with the second polarization state.
Alternatively, in the present embodiment, the wavelength selective polarization conversion device may include, but is not limited to, changing the polarization state of the primary light among the constituent broad spectrum light. For example, if the broad spectrum light is yellow light in the S-polarization state, the yellow light may be composed of red light in the S-polarization state and green light in the S-polarization state, and after the broad spectrum light is emitted to the wavelength selective polarization conversion device, red light in the P-polarization state and green light in the S-polarization state are emitted through conversion processing. That is, the polarization state of some primary light is changed, so that polarization splitting and light combining can be realized conveniently according to the polarization state.
Optionally, in this embodiment, the excitation light source may include, but is not limited to, a blue semiconductor laser. Further, the first wavelength conversion device may be, but is not limited to, a color wheel coated with a phosphor of a specific color. For example, after receiving the first excitation light split by blue light, the color wheel with the full-color segment coated with yellow phosphor emits broad-spectrum light of yellow phosphor, thereby realizing conversion of the first excitation light to broad-spectrum light.
Optionally, in this embodiment, the polarization splitting device may include, but is not limited to: polarizing element, polarization beam splitter element. For example, the excitation light is converted into light beams of two polarization states in time sequence by the polarization element, and the light beams are further split by the polarization splitting element in the polarization states.
Optionally, in this embodiment, the first and second liquid crystal on silicon sheets may include, but are not limited to, a device for changing the polarization state of the light beam, for example, S-state green light emitted to the liquid crystal on silicon sheets is converted to obtain P-state green light.
Specifically, as shown in fig. 4, the system includes an excitation light source 401, a polarizing element 402, a polarization splitting element 403, a first wavelength conversion device 404, mirrors 405 and 406, a polarizing element 407, a wavelength selective polarization conversion device 408, a dichroic mirror 409, a polarization splitting and combining device 410, a first liquid crystal on silicon 411, and a second liquid crystal on silicon 412.
The excitation light source 401 is generally a blue semiconductor laser, the emitted light is polarized light with a constant polarization state, the polarizing element 402 has a function of dynamically changing the polarization state of the incident light, the light emitted from the polarizing element 402 is time-sequential S-state blue laser and P-state blue laser, wherein the S-state blue laser is reflected by the polarization splitting element 403, enters the reflecting mirror 406, and is emitted to the dichroic mirror 409 after being reflected, the P-state blue laser transmits the polarization splitting element 403, enters the first wavelength conversion device 404 of the full-color yellow phosphor powder, emits yellow fluorescent light, is changed into yellow polarized light by the polarizing element 407, assuming that the yellow light is P-polarized yellow light, passes through the wavelength selective polarization conversion device 408, the green band of the P-state yellow light is still P light, the red light is changed into S light, and reaches the dichroic mirror 409 has the functions of transmitting blue light and reflecting yellow light, the two lights are combined at this point and enter the polarization beam splitting and combining device 410. The blue light in the light beam is divided into S-state blue light and P-state blue light, wherein the S-state blue light is reflected to reach the first silicon-based liquid crystal sheet 411, the P-state blue light is transmitted to reach the second silicon-based liquid crystal sheet 412, the S-state red light in the light beam is reflected to reach the first silicon-based liquid crystal sheet 411, the P-state green light is transmitted to reach the second silicon-based liquid crystal sheet 412, all the light beams are modulated by the two silicon-based liquid crystal sheets, the polarization state of the light beams is deflected by 90 degrees, namely the emergent light of the first silicon-based liquid crystal sheet 411 is the P-state blue light and the red light, the S-state blue light and the green light are emergent from the second silicon-based liquid crystal.
Through the embodiment that this application provided, the light source module carries out polarization beam splitting with the exciting light of the produced invariable polarization state of excitation light source, in order to obtain first exciting light beam and second exciting light beam, and lead first exciting light beam to first wavelength conversion device and convert the broad spectrum light into, and then utilize first polarizing element to adjust the broad spectrum light into first polarization state, and further handle the broad spectrum light of first polarization state through wavelength selection polarization conversion device, in order to obtain the first light beam that has first polarization state and the second light beam that has the second polarization state, thereby be convenient for polarization beam splitting and light combining device carries out beam splitting and light combining to the light beam of above-mentioned light source module outgoing, and finally form the image. Through the system, the exciting light with higher exciting efficiency and a constant polarization state is converted into light beams with different polarization states respectively and is distributed to the first silicon-based liquid crystal plate and the second silicon-based liquid crystal plate respectively, so that the energy on the two silicon-based liquid crystal plates is more balanced, the heat dissipation of the system is facilitated, the service life of a projection system is prolonged, and the light efficiency of imaging is improved.
As an alternative, the polarization splitting apparatus includes:
1) the second polarizing element is used for converting the exciting light in the constant polarization state into at least exciting light with a first polarization state and exciting light with a second polarization state in a time-sharing mode, and the first polarization state and the second polarization state are perpendicular to each other;
2) the first polarization beam splitting element is used for splitting the excitation light with the first polarization state and the excitation light with the second polarization state into a first excitation light beam with the first polarization state and a second excitation light beam with the second polarization state which are transmitted along different optical paths, and transmitting the first excitation light beam with the first polarization state to the first wavelength conversion device.
Specifically, as shown in fig. 4, after passing through the polarization element 402 (second polarization element), the excitation light with a constant polarization state emitted from the excitation light source 401 sequentially emits light with two polarization states according to a time sequence, for example, the excitation light is blue laser, and then emits blue light with S-state and blue light with P-state according to a time sequence, further, after reaching the polarization splitting element 403 (first polarization splitting element), the light with two polarization states is split into two light beams according to different polarization states, and assuming that the polarization splitting element 403 (first polarization splitting element) transmits the blue light with P-state and reflects the blue light with S-state, the blue light with S-state and the blue light with P-state are distributed to different light paths. Wherein the blue light of the P-state will be directed to the first wavelength converting device 404, i.e. the color wheel of the phosphor coated with broad spectrum light, in order to convert the light on this light path into broad spectrum light.
Through the embodiment that this application provided, through the combination of second polarization component and first polarization beam splitting component, can distribute the excitation light of invariable polarization state to different light paths according to the different polarization states after polarizing, so that incide the light beam of different polarization states to handle on the silicon-based liquid crystal piece that corresponds, the efficiency of light source has not only been increased, also become more balanced with the energy distribution on two silicon-based liquid crystal pieces simultaneously, be favorable to the heat dissipation of silicon-based liquid crystal piece, and then reach the effect that improves the life-span of system.
As an optional solution, the light source module 302 further includes:
and the second wavelength conversion device is arranged in a transmission light path of the second excitation light beam and is used for converting the second excitation light beam into broad spectrum light so that the light source module sequentially emits the broad spectrum light obtained by conversion of the first wavelength conversion device and the broad spectrum light obtained by conversion of the second wavelength conversion device.
Specifically, as shown in fig. 5, the light source module may further include a second wavelength conversion device 501, for example, a color wheel coated with cyan phosphor, and the second excitation light beam may also be converted into a broad spectrum light, such as a cyan broad spectrum light, so as to process two beams of broad spectrum light emitted from the light source module.
It should be noted that the manner of converting the excitation light beam into the broad-spectrum light is not limited to the above example, and the conversion may be implemented by other manners, which is not described herein again.
Through the embodiment that this application provided, also convert second excitation light beam into broad spectrum light to further realize the color and luster correction to the light beam of projection formation of image, and reach the effect that increases image brightness.
As an optional solution, the system further includes:
1) the third polarizing element is arranged in the transmission light path of the wide spectrum light converted by the second wavelength conversion device and used for converting the polarization state of the wide spectrum light converted by the second wavelength conversion device into the first polarization state;
2) and the second wavelength selective polarization conversion device is arranged in a rear-end optical path of the third polarizing element and is used for converting the wide-spectrum light in the first polarization state into a third light beam with the first polarization state and a fourth light beam with the second polarization state, wherein the first polarization state and the second polarization state are mutually vertical, and the third light beam and the fourth light beam have different spectral ranges.
Specifically, with reference to the following example, in the rear-end optical path of the second wavelength conversion device 501 shown in fig. 5, a third polarizing element and a second wavelength selective polarization conversion device are disposed, so that another beam of broad spectrum light obtained by the second wavelength conversion device can be processed by the third polarizing element to obtain a broad spectrum light in a predetermined polarization state, and then processed by the second wavelength selective polarization conversion device, so that after at least two beams emitted from the light source module are converted into the broad spectrum light, the two beams of broad spectrum light are respectively subjected to corresponding conversion processing to obtain a third beam and a fourth beam having different spectrum ranges and different polarization states.
According to the embodiment provided by the application, the combination of the third polarizing element and the second wavelength selective polarization conversion device is utilized, and the corresponding conversion processing is carried out on the other beam of broad spectrum light, so that the color correction of the beam of the projection imaging is realized, and the effect of increasing the image brightness is achieved.
As an optional scheme, the light source module further includes:
and the scattering device is arranged in the transmission light path of the second excitation light beam and is used for scattering the second excitation light beam so as to enable the light source module to emit the wide-spectrum light and the scattered second excitation light beam in sequence.
Optionally, in this embodiment, the scattering device may be, but is not limited to, a color wheel of a full-color segment scattering powder.
It should be noted that the scattering device is not limited to the above example, and scattering may also be achieved by other manners, which is not described herein again.
Specifically, as shown in fig. 6, the second excitation light beam distributed by the polarization beam splitter 403 is guided to the scattering device 601, so that the second excitation light beam is scattered to avoid the speckle phenomenon that occurs when the laser is directly used as projection light, and further, the polarization state of the second excitation light beam can be eliminated by scattering, and then the second excitation light beam is guided to the dichroic mirror 409, so as to facilitate the polarization beam splitting and light combining process.
As an optional solution, the system further includes:
1) the optical relay element is arranged in a transmission optical path of the scattered second excitation light beam and used for guiding the scattered second excitation light beam to the light combining component;
2) and the light combining component is used for combining the first light beam with the first polarization state and the second light beam with the second polarization state emitted by the wavelength selective polarization conversion device and the scattered second excitation light beam emitted by the optical relay element and emitting the combined light beam to the polarization splitting and light combining device.
Optionally, in this embodiment, the light relay element may include, but is not limited to, a mirror. The light beam is changed in optical path by reflection and relayed to a target device. The above is merely an example, and the present embodiment is not limited thereto.
Optionally, in this embodiment, the light combining component may include, but is not limited to, a dichroic mirror, and combines light beams in different polarization states by reflecting and transmitting light beams in a predetermined polarization state. The above is merely an example, and the present embodiment is not limited thereto.
Specifically, as described with reference to fig. 4, the first excitation light beam is converted by the first wavelength conversion device 404 (for example, a color wheel coated with a broad spectrum phosphor powder) to obtain a broad spectrum light, and then the broad spectrum light is relayed to the polarizing element 407 by the light relay element reflector 405, so as to adjust the broad spectrum light to a predetermined polarization state, and the light beam is guided to the dichroic mirror 409 after being processed by the wavelength selective polarization conversion device; on the other hand, the second excitation light beam can be guided to dichroic mirror 409 by light relay element mirror 406. Then, the light beams are combined by the dichroic mirror 409 and emitted to the polarization splitting/combining device 410.
Through the embodiment provided by the application, through the optical relay element, the two light beams split by the polarization beam splitting device are respectively processed correspondingly and are respectively relayed to the light combining component, so that the light beams on the two light paths are combined to form a final image.
As an alternative to this, it is possible to,
1) the first silicon-based liquid crystal plate is used for modulating the first light beam with the first polarization state, converting the first light beam into the first light beam with the second polarization state, and emitting the first light beam with the second polarization state to the polarization beam splitting and combining device;
2) and the second silicon-based liquid crystal plate is used for modulating and converting the second light beam with the second polarization state into the second light beam with the first polarization state and emitting the second light beam with the first polarization state to the polarization beam splitting and combining device.
Alternatively, in this embodiment, the liquid crystal on silicon substrate may include, but is not limited to, a matrix liquid crystal display device based on a reflective mode, which is very small in size. Optionally, in this embodiment, the polarization splitting and combining device is further configured to combine the first light beam with the second polarization state emitted from the first silicon-based liquid crystal panel and the second light beam with the first polarization state emitted from the second silicon-based liquid crystal panel to emit the combined light.
Specifically, the following example is used to describe that after two optical paths are processed differently, a first light beam with a first polarization state, a first light beam with a second polarization state, a second light beam with the second polarization state, and a second light beam with the first polarization state are obtained. And respectively distributing the light beams to different silicon-based liquid crystal plates according to different polarization states. For example, as shown in fig. 4, a dichroic mirror 409 combines the received blue light and yellow light to emit light, wherein the blue light is divided into S-state blue light and P-state blue light, the yellow light, after passing through a wavelength selective polarization conversion device 408, obtains P-state green light and S-state red light, and assuming that a polarization beam splitting and combining device 410 (e.g., a PBS prism) can reflect the S-state light and transmit the P-state light, the S-state blue light and the S-state red light in the combined light beam will be reflected to a first liquid crystal-based panel 411, the P-state blue light and the P-state green light will be transmitted to a second liquid crystal-based panel 412, the S-state blue light and the S-state red light are modulated by a first liquid crystal-based panel 411 and then are polarized and deflected by 90 degrees, so as to obtain P-state blue light and P-state red light, the P-state blue light and the P-state green light are modulated by a second liquid crystal-based panel 412 and, and exits to the lens to form an image.
Through the embodiment that this application provided, through adopting the biplate formula LCOS structure, compromise the cost and the light efficiency of system, handle on two silicon-based liquid crystal plates with the light distribution of light source transmission for the energy on two silicon-based liquid crystal plates is more balanced, is favorable to the heat dissipation of system, and then when improving projection imaging system's light efficiency, has still prolonged life.
As an optional solution, the system further includes:
1) the wavelength selective analyzer is arranged in a rear-end optical path of the polarization beam splitting and combining device and is used for selectively transmitting the light beams combined by the polarization beam splitting and combining device, wherein the light beams combined by the polarization beam splitting and combining device are light beams formed by combining light beams emitted by the first silicon-based liquid crystal plate and the second silicon-based liquid crystal plate by the polarization beam splitting and combining device;
2) and the lens is used for projecting and imaging the light beam emitted by the polarization analyzing device according to the wavelength selection.
Optionally, in this embodiment, the wavelength selective polarization analyzer may be, but not limited to, selectively transmit the light beams modulated and converted by the two liquid crystal panels, for example, transmit the second excitation light beam, and the first light beam having the first polarization state and the second light beam having the second polarization state, so as to achieve the effect of shielding stray light, further improve the contrast of light, and finally guide the imaging light beam to a lens to form an image.
In the present application, the following optional embodiments may be specifically included:
as shown in fig. 7, the system includes an excitation light source 701, a polarization modulation device 702, a PBS prism 703, a color wheel 704 and a color wheel 705, mirrors 706 and 707, a polarizing element 708, a wavelength selective polarization conversion device 709, a dichroic mirror 710, a PBS prism 711, silicon-based liquid crystal sheets 712 and 713, a wavelength selective analyzer 714, and a projection lens 715.
Specifically, the excitation light source 701 is generally a blue semiconductor laser, the emitted light is polarized light, the polarization modulation device 702 has a function of dynamically changing the polarization state of the incident light, the light emitted from the polarization modulation device 702 is a time-sequential S-blue laser and P-blue laser, wherein the S-blue laser is reflected by the PBS prism 703 and enters the color wheel 704 of the full-color segment scattering powder, the emitted blue light is reflected by the reflecting mirror 706 to reach the dichroic mirror 710 after eliminating the polarization state, the P-blue laser transmits the PBS prism 703 and enters the color wheel 705 of the full-color segment yellow phosphor, the emitted yellow phosphor passes through the reflecting mirror 707, the light beam is guided to the polarizing element 708 to be yellow polarized light, which is assumed to be P-polarized yellow light, and then passes through the wavelength selective polarization conversion device 709, the green band of the P-yellow light is still P-light, the red light is changed into S-light, and reaches the dichroic mirror 710, the dichroic mirror 710 has the functions of transmitting blue light and reflecting yellow light, so that the two light beams are combined at the position and enter the PBS prism 711, the blue light in the light beam is divided into S-light blue light and P-light blue light, wherein the S-light blue light is reflected and reaches the position of the silicon-based liquid crystal plate 712, the P-light blue light is transmitted and reaches the position of the silicon-based liquid crystal plate 713, the S-light red light in the light beam is reflected and reaches the position of the silicon-based liquid crystal plate 712, the P-light green light is transmitted and reaches the position of the silicon-based liquid crystal plate 713, all the light beams are modulated by the two silicon-based liquid crystal plates 712 and 713, the polarization state is deflected by 90 degrees, that is, the emergent light of the silicon-based liquid crystal plate 712 is P-light blue light and red light, the silicon-based liquid crystal plate 713 emits S-light blue light and green light, when passing through the PBS prism 711, the P-light is transmitted and the S-, the function of only transmitting the green light of P light and the red light of S light, so that the influence of stray light is shielded, the contrast is improved, and the imaging light beam finally reaches the projection lens 715 to form an image.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a mobile terminal, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A projection imaging system comprises a first silicon-based liquid crystal plate and a second silicon-based liquid crystal plate, and is characterized by further comprising:
the light source module is used for emitting at least two beams of light in sequence, at least one beam of light in the at least two beams of light is wide-spectrum light, and the combined light of the at least two beams of light comprises tricolor light;
the first polarization starting element is arranged in a transmission light path of the broad spectrum light of the light source module and used for converting the polarization state of the broad spectrum light into a first polarization state;
a first wavelength selective polarization conversion device disposed in a rear optical path of the first polarizer, for converting the broad spectrum light of the first polarization state into a first light beam having the first polarization state and a second light beam having a second polarization state, wherein the first polarization state and the second polarization state are perpendicular to each other, and the first light beam and the second light beam have different spectral ranges;
the polarization beam splitting and combining device is arranged in a rear-end optical path of the first wavelength selective polarization conversion device and is used for transmitting the first light beam with the first polarization state to the first silicon-based liquid crystal plate along a first optical path, transmitting the second light beam with the second polarization state to the second silicon-based liquid crystal plate along a second optical path, and combining and emitting the light beams emitted by the first silicon-based liquid crystal plate and the second silicon-based liquid crystal plate;
wherein the light source module includes:
the excitation light source is used for generating excitation light in a constant polarization state;
the polarization light splitting device is arranged in a transmission light path of the exciting light and is used for splitting the exciting light in the constant polarization state into at least two beams of light transmitted along different light paths in a time-sharing manner, wherein the at least two beams of light at least comprise a first exciting light beam and a second exciting light beam;
and the first wavelength conversion device is arranged in a transmission light path of the first excitation light beam and is used for converting the first excitation light beam into the broad spectrum light.
2. The system of claim 1, wherein the polarization splitting device comprises:
a second polarizing element for converting the excitation light of the constant polarization state into at least excitation light having the first polarization state and excitation light having the second polarization state in a time-sharing manner, the first polarization state and the second polarization state being perpendicular to each other;
a first polarization beam splitter for splitting the excitation light having the first polarization state and the excitation light having the second polarization state into a first excitation light beam having the first polarization state and a second excitation light beam having the second polarization state transmitted along different optical paths, and transmitting the first excitation light beam having the first polarization state to the first wavelength conversion device.
3. The system of claim 1, wherein the light source module further comprises:
and the second wavelength conversion device is arranged in a transmission light path of the second excitation light beam and is used for converting the second excitation light beam into the broad spectrum light so as to enable the light source module to sequentially emit the broad spectrum light obtained by conversion of the first wavelength conversion device and the broad spectrum light obtained by conversion of the second wavelength conversion device.
4. The system of claim 3, further comprising:
a third polarizing element, disposed in the transmission optical path of the broad-spectrum light obtained by the conversion of the second wavelength conversion device, for converting the polarization state of the broad-spectrum light obtained by the conversion of the second wavelength conversion device into the first polarization state;
and a second wavelength selective polarization conversion device, disposed in a rear optical path of the third polarizing element, for converting the broad spectrum light in the first polarization state converted by the second wavelength conversion device into a third light beam in the first polarization state and a fourth light beam in the second polarization state, where the first polarization state and the second polarization state are perpendicular to each other, and the third light beam and the fourth light beam have different spectrum ranges.
5. The system of claim 1, wherein the light source module further comprises:
and the scattering device is arranged in the transmission light path of the second excitation light beam and is used for scattering the second excitation light beam so as to enable the light source module to sequentially emit the wide-spectrum light and the scattered second excitation light beam.
6. The system of claim 5, further comprising:
the optical relay element is arranged in a transmission optical path of the scattered second excitation light beam and used for guiding the scattered second excitation light beam to the light combining component;
the light combining component is configured to combine the first light beam with the first polarization state and the second light beam with the second polarization state emitted from the wavelength selective polarization conversion device, and the scattered second excitation light beam emitted from the optical relay element, and emit the combined light beam to the polarization splitting and combining device.
7. The system of claim 1,
the first silicon-based liquid crystal plate is used for modulating and converting the first light beam with the first polarization state into the first light beam with the second polarization state, and emitting the first light beam with the second polarization state to the polarization beam splitting and combining device;
the second silicon-based liquid crystal plate is used for modulating and converting the second light beam with the second polarization state into the second light beam with the first polarization state, and emitting the second light beam with the first polarization state to the polarization beam splitting and combining device.
8. The system of claim 7,
the polarization beam splitting and combining device is further configured to combine the first light beam with the second polarization state emitted from the first silicon-based liquid crystal sheet and the second light beam with the first polarization state emitted from the second silicon-based liquid crystal sheet for emission.
9. The system of claim 1, further comprising:
the wavelength selective analyzer is arranged in a rear-end optical path of the polarization splitting and combining device and is used for selectively transmitting the light beams combined by the polarization splitting and combining device, wherein the light beams combined by the polarization splitting and combining device are light beams emitted by the first silicon-based liquid crystal plate and the second silicon-based liquid crystal plate and combined by the polarization splitting and combining device;
and the lens is used for projecting and imaging the light beam emitted by the polarization analyzing device according to the wavelength selection.
10. The system of claim 9,
the wavelength selective polarization analyzing device transmits the second excitation light beam and the first light beam having the first polarization state and the second light beam having the second polarization state.
11. The system of claim 10,
the second excitation light beam is blue light, the first light beam with the first polarization state is green light with the first polarization state, and the second light beam with the second polarization state is red light with the second polarization state; or,
the second excitation light beam is blue light, the first light beam with the first polarization state is red light with the first polarization state, and the second light beam with the second polarization state is green light with the second polarization state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510041220.3A CN105988268B (en) | 2015-01-27 | 2015-01-27 | Projection imaging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510041220.3A CN105988268B (en) | 2015-01-27 | 2015-01-27 | Projection imaging system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105988268A CN105988268A (en) | 2016-10-05 |
| CN105988268B true CN105988268B (en) | 2018-04-13 |
Family
ID=57034827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510041220.3A Active CN105988268B (en) | 2015-01-27 | 2015-01-27 | Projection imaging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105988268B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613110B (en) * | 2016-12-22 | 2020-06-02 | 深圳市绎立锐光科技开发有限公司 | Light source system, automobile lighting system and control method |
| CN108345160B (en) * | 2017-01-22 | 2020-11-17 | 深圳光峰科技股份有限公司 | Projection display system |
| CN108803211B (en) * | 2017-04-27 | 2021-03-23 | 深圳光峰科技股份有限公司 | Light source system and projection system using same |
| CN109459908B (en) * | 2018-12-27 | 2023-10-03 | 深圳彩翼光电科技有限公司 | Light source light path system of laser projector |
| CN110716380B (en) | 2019-11-25 | 2021-05-18 | 成都极米科技股份有限公司 | Light source system and projector |
| JP7463925B2 (en) | 2020-09-16 | 2024-04-09 | セイコーエプソン株式会社 | Light source device and projector |
| EP4375746A1 (en) * | 2021-07-21 | 2024-05-29 | Sony Group Corporation | Lighting device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1098536A2 (en) * | 1999-11-05 | 2001-05-09 | Texas Instruments Incorporated | Colour recapture for projection systems |
| JP2004205919A (en) * | 2002-12-26 | 2004-07-22 | Victor Co Of Japan Ltd | Projection type stereoscopic display device |
| CN102402016A (en) * | 2011-11-09 | 2012-04-04 | 南京邮电大学 | Silica-based liquid crystal stereo projection light machine |
| CN102566231A (en) * | 2010-11-26 | 2012-07-11 | 三洋电机株式会社 | Illumination device and video projector |
| CN103019013A (en) * | 2011-09-28 | 2013-04-03 | 苏州智能泰克有限公司 | Polarizing projection display device |
| CN204422964U (en) * | 2015-01-27 | 2015-06-24 | 深圳市绎立锐光科技开发有限公司 | Projection imaging system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1423753A4 (en) * | 2001-07-12 | 2005-08-03 | Genoa Technologies Ltd | Sequential projection color display using multiple imaging panels |
-
2015
- 2015-01-27 CN CN201510041220.3A patent/CN105988268B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1098536A2 (en) * | 1999-11-05 | 2001-05-09 | Texas Instruments Incorporated | Colour recapture for projection systems |
| JP2004205919A (en) * | 2002-12-26 | 2004-07-22 | Victor Co Of Japan Ltd | Projection type stereoscopic display device |
| CN102566231A (en) * | 2010-11-26 | 2012-07-11 | 三洋电机株式会社 | Illumination device and video projector |
| CN103019013A (en) * | 2011-09-28 | 2013-04-03 | 苏州智能泰克有限公司 | Polarizing projection display device |
| CN102402016A (en) * | 2011-11-09 | 2012-04-04 | 南京邮电大学 | Silica-based liquid crystal stereo projection light machine |
| CN204422964U (en) * | 2015-01-27 | 2015-06-24 | 深圳市绎立锐光科技开发有限公司 | Projection imaging system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105988268A (en) | 2016-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105988268B (en) | Projection imaging system | |
| US10466580B2 (en) | Projection system | |
| CN204422964U (en) | Projection imaging system | |
| CN107678231B (en) | Liquid crystal on silicon optical projection system | |
| US10139713B2 (en) | Light source system and projection system | |
| US10110861B2 (en) | Light source system and projection system | |
| JP6537103B2 (en) | Light source device, projection type display device and light generation method | |
| CN106154712B (en) | Light emitting device and projection display apparatus | |
| EP3176638A1 (en) | Light-emitting device and projection system | |
| CN109765745B (en) | Light source device and projection system | |
| TW200408284A (en) | Color management system having a field lens | |
| CN204595411U (en) | Light-emitting device and projection display apparatus | |
| CN102621791A (en) | Mixed-light-source liquid-crystal projection light engine system | |
| JP2017151293A (en) | Light source device and projection device | |
| US9465222B2 (en) | Six-primary solid state illuminator | |
| CN112147836A (en) | Light source system and display device | |
| CN102621789A (en) | Compact liquid crystal projection light engine system using mixed light source | |
| CN113296341B (en) | Lighting system | |
| WO2022037196A1 (en) | Three-color light source device and projection display device | |
| CN105511091B (en) | Light splitting and combining device and projection display system | |
| KR20170133936A (en) | Light source device and projector comprising the same | |
| KR101798158B1 (en) | Light source device and projector comprising the same | |
| CN105629486B (en) | 3D projection display system | |
| JP2007093970A (en) | Projection type image display apparatus | |
| CN109459908B (en) | Light source light path system of laser projector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170613 Address after: 518055 Guangdong city of Shenzhen province Nanshan District Xili town tea light road Shenzhen city integrated circuit design and application of Industrial Park 401 Applicant after: APPOTRONICS Corp.,Ltd. Address before: 518055 Guangdong city of Shenzhen province Nanshan District Xi Li Light Road No. 1089 Shenzhen integrated circuit design and application of Industrial Park Building 4 Applicant before: YLX Inc. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 20-22, 20-22 headquarters building, 63 high tech Zone, Xuefu Road, Nanshan District, Guangdong Province, Guangdong. Patentee after: APPOTRONICS Corp.,Ltd. Address before: 518000 Nanshan District, Shenzhen, Guangdong, Guangdong Province, Guangdong Road, 63 Xuefu Road, high-tech zone, 21 headquarters building, 22 floor. Patentee before: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address after: 518000 Nanshan District, Shenzhen, Guangdong, Guangdong Province, Guangdong Road, 63 Xuefu Road, high-tech zone, 21 headquarters building, 22 floor. Patentee after: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address before: 518055 Guangdong province Shenzhen Nanshan District Xili town Cha Guang road Shenzhen integrated circuit design application Industrial Park 401 Patentee before: APPOTRONICS Corp.,Ltd. |
|
| CP03 | Change of name, title or address |