CN203982065U - DLP minitype projection machine - Google Patents
DLP minitype projection machine Download PDFInfo
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- CN203982065U CN203982065U CN201420463525.4U CN201420463525U CN203982065U CN 203982065 U CN203982065 U CN 203982065U CN 201420463525 U CN201420463525 U CN 201420463525U CN 203982065 U CN203982065 U CN 203982065U
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Abstract
The utility model discloses a kind of DLP minitype projection machine.This DLP minitype projection machine comprises: for electro-optical device, comprising: by a LED luminescence chip and the 2nd LED luminescence chip be packaged together first collimation lens set, the 3rd LED luminescence chip of the LED luminescence unit forming, setting corresponding to LED luminescence unit and the second collimation lens set and light splitting eyeglass with the corresponding setting of the 3rd LED luminescence chip; Lamp optical system, comprising: beam shaping parts, wedge shape optics and light beam guiding part; Described wedge shape optics comprises uneven the 3rd workplace and the 4th workplace mutually, and described the 3rd workplace is coated with dichroic dichroic coating, and the 4th workplace is coated with reflectance coating or dichroic dichroic coating; DLP photomodulator; And projection lens device.The compact in design of this DLP minitype projection machine, has simplified optical element, and light loss is low, reduces the volume and weight of DLP minitype projection machine, is convenient for carrying or the applicable hand-held electronic equipment that embeds.
Description
Technical field
The utility model relates to digital projection display technique field, particularly a kind of DLP minitype projection machine.
Background technology
Along with the promotion of scientific and technical development, particularly semiconductor technology, portable electronic equipment is is constantly manufactured and designed out.The lifting of portable electric appts function, the requirement of the display device of user to man-machine interface is more and more towards miniature, giant-screen and high resolving power future development.Under the impelling of users' tight demand, minitype projection machine technical development is in recent years swift and violent, the product such as DLP, LCOS has been released portable handhold mini-size projector's product (PICO) one after another, or is built in the projector's module in the handheld mobile devices such as mobile phone.DLP projection products because of the LCD than traditional and LCOS projector lumen brightness, video image show and contrast aspect all demonstrating larger superiority, and liked by consumer.
For the miniature DLP projector of existing routine, to be applied in better in hand-held electronic equipment, will keep having under the prerequisite of high light output, require projecting light path design succinct efficient, make projector meet the applicable conditions that are applied in hand-held electronic equipment such as light loss that size is little, lightweight, low.
At present conventional miniature DLP projector as shown in Figure 1, it adopts 500 (they comprise two light splitting eyeglasses 501,502) of light splitting lens set for electro-optical device part, tricolor LED light is arranged in parallel and incides subsequent optical device, but two light splitting eyeglasses 501,502 are angle setting, production technology is comparatively complicated and take up room larger, make light path compact not, increased the volume of projector; In addition, transmitted light beam need be through the transmission of two light splitting eyeglasses 501,502 (two dichroic color filter), and transmission each time all can have light intensity loss.Above-mentioned 2 to be all not suitable with existing hand-held electronic equipment succinct efficient to projecting light path's design of miniature DLP projector, the requirement of the light loss that size is little, lightweight, low.
The information that is disclosed in this background technology part is only intended to increase the understanding to general background of the present utility model, and should not be regarded as admitting or imply that in any form this information structure has been the known prior art of persons skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of simple and reasonable DLP minitype projection machine, this DLP minitype projection machine is by adopting wedge shape optics to substitute the catoptron in the lamp optical system of existing miniature DLP projector, make it can adopt monolithic light splitting eyeglass to replace the two slice dichroic beamsplitter sheets of existing DLP projector for fan-shaped setting in a certain angle in electro-optical device for electro-optical device, and then make projector's compact in design, simplify optical element, light loss is low, reduce the volume and weight of DLP minitype projection machine, be convenient for carrying or the applicable hand-held electronic equipment that embeds.
For achieving the above object, the utility model provides DLP minitype projection machine, comprise: for electro-optical device, comprising: by a LED luminescence chip and the 2nd LED luminescence chip be packaged together first collimation lens set, the 3rd LED luminescence chip of the LED luminescence unit forming, setting corresponding to LED luminescence unit, the second collimation lens set and light splitting eyeglass with the corresponding setting of the 3rd LED luminescence chip; Described light splitting eyeglass comprises the first workplace and the second workplace, on described the first workplace, be coated with dichroic dichroic coating, the second workplace is correspondingly coated with anti-reflection film, or, on described the first workplace, be coated with and on anti-reflection film, the second workplace, be coated with corresponding dichroic dichroic coating; Lamp optical system, comprising: beam shaping parts, wedge shape optics and light beam guiding part; Described wedge shape optics comprises uneven the 3rd workplace and the 4th workplace mutually, and described the 3rd workplace is coated with dichroic dichroic coating, and the 4th workplace is coated with reflectance coating or dichroic dichroic coating; DLP photomodulator; And projection lens device.
Preferably, in technique scheme, the one LED luminescence chip, the 2nd LED luminescence chip and the 3rd LED luminescence chip send respectively the first light beam, the second light beam and the 3rd light beam, the first light beam or the second light beam overlap with the central optical axis of the first collimation lens set, and the 3rd light beam overlaps with the central optical axis of the second collimation lens set.
Preferably, in technique scheme, beam shaping parts are made up of compound eye array lens or optical wand and the first relay lens.
Preferably, in technique scheme, beam shaping parts are arranged at between electro-optical device and wedge shape optics, or are arranged between wedge shape optics and light beam guiding part.
Preferably, in technique scheme, the dihedral angle that the 3rd workplace and the 4th workplace form is greater than 1 ° and is less than 45 °.
Preferably, in technique scheme, the central optical axis angle that angle and beam shaping parts are set of wedge shape optics is greater than 15 ° and is less than 80 °.
Preferably, in technique scheme, light beam guiding part comprises: a relay lens and a right-angle prism group.
Preferably, in technique scheme, light beam guiding part comprises: a free-form surface lens and a right-angle prism.
Preferably, in technique scheme, light beam guiding part comprises: a field lens and a catoptron.
Compared with prior art, the utlity model has following beneficial effect: this DLP minitype projection machine is by adopting wedge shape optics to substitute the catoptron in the lamp optical system of existing miniature DLP projector, make it can adopt monolithic light splitting eyeglass to replace the two slice dichroic beamsplitter sheets of existing DLP projector for fan-shaped setting in a certain angle in electro-optical device for electro-optical device, and then make projector's compact in design, simplify optical element, light loss is low, reduce the volume and weight of DLP minitype projection machine, be convenient for carrying or the applicable hand-held electronic equipment that embeds.
Brief description of the drawings
Fig. 1 is the structural representation of existing miniature DLP projector.
Fig. 2 is the structural representation of the miniature DLP embodiment of projector mono-of the present utility model.
Fig. 2 A is light beam guiding part the first structural representation of the miniature DLP embodiment of projector mono-of the present utility model.
Fig. 2 B is light beam guiding part the second structural representation of the miniature DLP embodiment of projector mono-of the present utility model.
Fig. 2 C is that the beam shaping parts of the miniature DLP embodiment of projector mono-of the present utility model arrange structural representation.
Fig. 3 is the structural representation of the miniature DLP embodiment of projector bis-of the present utility model.
Fig. 4 is the structural representation of the miniature DLP embodiment of projector tri-of the present utility model.
Fig. 5 is the structural representation of the miniature DLP embodiment of projector tetra-of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subject to the restriction of embodiment.
Unless separately there is other clearly to represent, otherwise in whole instructions and claims, term " comprises " or its conversion was stated being understood to include as " comprising " or " including " etc. element or ingredient, and do not get rid of other element or other ingredient.
Embodiment mono-:
As shown in Figure 2, comprise and arranging in turn along light path according to the concrete structure of the miniature DLP projector of the utility model embodiment: for electro-optical device, lamp optical system, DLP photomodulator and projection lens device.
Wherein, comprise for electro-optical device: by a LED luminescence chip 101 and the 2nd LED luminescence chip 102 be packaged together first collimation lens set 104, the 3rd LED luminescence chip 103 of the LED luminescence unit 1 forming, setting corresponding to LED luminescence unit 1 and the second collimation lens set 105 and light splitting eyeglass 110 with the corresponding setting of the 3rd LED luminescence chip 103.
The one LED luminescence chip 101, the 2nd LED luminescence chip 102 and the 3rd LED luminescence chip 103 send respectively the first light beam 101a, the second light beam 102a and the 3rd light beam 103a, the first light beam 101a, the second light beam 102a and the 3rd light beam 103a color are different, but the compound white light beam that forms, for example the first light beam 101a, the second light beam 102a and the 3rd light beam 103a color combination can be red bluish-green (RBG) primaries, can also be cyan, yellow and fuchsin (CYM); Wherein, one of the first light beam 101a or second light beam 102a overlap with the central optical axis of the first collimation lens set 104, and the 3rd light beam 103a overlaps with the central optical axis of the second collimation lens set 105.
Light splitting eyeglass 110 is connected with the first collimation lens set 104 and the second collimation lens set 105 optics, in order to process via the three-color LED light beam (101a, 102a and 103a) after the first collimation lens set 104 and the second collimation lens set collimation; Light splitting eyeglass 110 comprises the first workplace 111 and the second workplace 112, wherein, on the first workplace 111, be coated with dichroic dichroic coating, can make the first light beam 101a and the second light beam 102a see through and the 3rd light beam 103a reflection, the second 112 of workplaces are correspondingly coated with anti-reflection film, and under the effect of the dichroic dichroic coating on the first workplace 111, the second light beam 102a and the 3rd light beam 103a close light and form the 4th light beam 104a and the first light beam 101a and incide subsequent optical parts.
This lamp optical system comprises: beam shaping parts 120, wedge shape optics 130 and light beam guiding part 140; Beam shaping parts 120 are made up of compound eye array lens 121 or optical wand and the first relay lens 122, for receiving by the first light beam 101a of light splitting eyeglass 110 outgoing and the 4th light beam 104a and by its even guiding subsequent optical parts, can be arranged at between electro-optical device and wedge shape optics, also can be arranged on (as Fig. 2 C) between wedge shape optics 130 and light beam guiding part 140;
Wedge shape optics 130 comprises that the 3rd workplace 131 and the 4th workplace 132, the three workplaces 131 are not parallel to each other mutually with the 4th workplace 132, and the two dihedral angle forming is greater than 1 ° and is less than 45 °; Wherein the 3rd workplace 131 is coated with dichroic dichroic coating, and the 4th workplace 132 is coated with reflectance coating or dichroic dichroic coating; In the time that the 3rd workplace 131 is coated with corresponding dichroic dichroic coating and reflects the first light beam 101a, the 4th workplace 132 is coated with reflectance coating or corresponding dichroic dichroic coating reflection the 4th light beam 104a, on the contrary, in the time that the 3rd workplace 131 is coated with corresponding dichroic dichroic coating reflection the 4th light beam 104a, the 4th workplace 132 is coated with reflectance coating or corresponding dichroic dichroic coating reflects the first light beam 101a; , after the 3rd workplace 131 and the 4th workplace 132 effects of wedge shape optics 130, close light and form a branch of white light beam 105a from the first light beam 101a of beam shaping parts 120 and the 4th light beam 104a;
The central optical axis angle that angle and beam shaping parts are set of wedge shape optics 130 is greater than 15 ° and is less than 80 °, can make the reflective operation face corresponding with light beam from the light beam of beam shaping parts 120 (131 or 132) be to be greater than 30 ° to be less than the incident angle of 60 °, preferably, it is 45 ° from the incident angle of the light beam of the beam shaping parts 120 reflective operation face corresponding with light beam (131 or 132);
Light beam guiding part 140 can be the optics group of a relay lens 141 and a right-angle prism group (142 and 143) or a free-form surface lens 141B and a right-angle prism 142B (as Fig. 2 B) or a field lens 141A and a catoptron 142A (as Fig. 2 A) composition.
White light beam 105a is transmitted through DLP photomodulator through follow-up light beam guiding part 140, and when dmd chip 150 is when opening, illuminating bundle converts image strip along continuous straight runs after the hypotenuse total reflection of right-angle prism 143 to and projects projection lens device 160.
Embodiment bis-:
Be illustrated in figure 3 the structural representation of the utility model embodiment bis-.With reference to accompanying drawing 3, projection module and the embodiment mono-of embodiment bis-are similar, are with embodiment mono-difference, and embodiment bis-makes the first light beam 201a and the 3rd light beam 203a close light for electro-optical device part, and wedge shape optics is done corresponding adjustment thereupon.
Specifically be implemented as follows, adjust the position that angle or LED luminescence unit 1 or the 3rd LED luminescence chip unit 2 203 are set of light splitting eyeglass 210, on the first workplace 211 of light splitting eyeglass 210, under the effect of dichroic dichroic coating, the first light beam 201a and the 3rd light beam 203a close that light forms the 4th light beam 204a and the second light beam 202a incides subsequent optical parts.
Lamp optical system part is also made corresponding change, and wedge shape optics 230 comprises the 3rd workplace 231 and the 4th workplace 232.In the time that the 3rd workplace 231 is coated with corresponding dichroic dichroic coating and reflects the second light beam 202a, the 4th workplace 232 is coated with reflectance coating or corresponding dichroic dichroic coating reflection the 4th light beam 204a, on the contrary, in the time that the 3rd workplace 231 is coated with corresponding dichroic dichroic coating reflection the 4th light beam 204a, the 4th workplace 232 is coated with reflectance coating or corresponding dichroic dichroic coating reflects the second light beam 202a; After wedge shape optics 230, close light from the second light beam 202a of beam shaping parts 120 and the first relay lens 121 and the 4th light beam 204a and form a white light beam 205a.
Embodiment tri-:
Be illustrated in figure 4 the structural representation of the utility model embodiment tri-.With reference to accompanying drawing 4, projection module and the embodiment mono-of embodiment tri-are similar, be with embodiment mono-difference, embodiment tri-is coated with anti-reflection film on the first workplace 311 of light splitting eyeglass 310, on the second workplace 312, be coated with corresponding dichroic dichroic coating, make the second light beam 302a and the 3rd light beam 303a close light and close light on the second workplace 312.Specifically be implemented as follows, light splitting eyeglass 310 comprises the first workplace 311 and the second workplace 312, on the first workplace 311, be coated with anti-reflection film, the second 312 of workplaces are coated with correspondingly dichroic dichroic coating, and the 3rd light beam 303a closes after light forms the 4th light beam 304a and incides subsequent optical parts with the first light beam 301a through the reflection of the dichroic dichroic coating on light splitting eyeglass the second workplace 312 and the second light beam 302a.
Embodiment tetra-:
Be illustrated in figure 5 the structural representation of the utility model embodiment tetra-.With reference to accompanying drawing 5, projection module and the embodiment bis-of embodiment tetra-are similar, are with embodiment bis-differences, and embodiment tri-is coated with anti-reflection film on the first workplace 411 of light splitting eyeglass 410, on the second workplace 412, be coated with corresponding dichroic dichroic coating, make segment beam close light.Specifically be implemented as follows, light splitting eyeglass 410 comprises the first workplace 411 and the second workplace 412, on the first workplace 411, is coated with anti-reflection film, and the second 412 of workplaces are coated with correspondingly dichroic dichroic coating.Adjust the position that angle or corresponding LED luminescence chip are set of light splitting eyeglass 410, the 3rd light beam 403a incides subsequent optical parts with the second light beam 402a after the reflection of dichroic dichroic coating on light splitting eyeglass the first workplace 411 is closed light formation the 4th light beam 404a with the first light beam 401a.
It should be noted that, the utility model does not limit a LED luminescence chip and the 2nd LED luminescence chip component units one that is packaged together, and the 3rd LED luminescence chip is unit two, but first, second and third LED luminescence chip at least wherein the two is encapsulated in forming unit one together; Do not limit the color sequences of the first light beam, the second light beam and the 3rd light beam yet, for example, when the combined colors of tri-color beam is red when bluish-green, it is red, blue and green that the first light beam, the second light beam and the 3rd light beam can be respectively, the situation that can also be that the first light beam, the second light beam and the 3rd light beam are respectively blue, red and green etc.
To sum up, this DLP minitype projection machine is by adopting wedge shape optics to substitute the catoptron in the lamp optical system of existing miniature DLP projector, make it can adopt monolithic light splitting eyeglass to replace the two slice dichroic beamsplitter sheets of existing DLP projector for fan-shaped setting in a certain angle in electro-optical device for electro-optical device, and then make projector's compact in design, simplify optical element, light loss is low, reduce the volume and weight of DLP minitype projection machine, be convenient for carrying or the applicable hand-held electronic equipment that embeds.
The aforementioned description to concrete exemplary of the present utility model is in order to illustrate and the object of illustration.These descriptions not want the utility model to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.Exemplary embodiment is selected and the object described is to explain certain principles of the present utility model and practical application thereof, thereby made those skilled in the art can realize and utilize various exemplary of the present utility model and various selection and change.Scope of the present utility model is intended to be limited by claims and equivalents thereof.
Claims (9)
1. a DLP minitype projection machine, is characterized in that, comprising:
For electro-optical device, comprising: by a LED luminescence chip and the 2nd LED luminescence chip be packaged together first collimation lens set, the 3rd LED luminescence chip of the LED luminescence unit forming, setting corresponding to LED luminescence unit, the second collimation lens set and light splitting eyeglass with the corresponding setting of the 3rd LED luminescence chip; Described light splitting eyeglass comprises the first workplace and the second workplace, on described the first workplace, be coated with dichroic dichroic coating, the second workplace is correspondingly coated with anti-reflection film, or, on described the first workplace, be coated with and on anti-reflection film, the second workplace, be coated with corresponding dichroic dichroic coating;
Lamp optical system, comprising: beam shaping parts, wedge shape optics and light beam guiding part; Described wedge shape optics comprises uneven the 3rd workplace and the 4th workplace mutually, and described the 3rd workplace is coated with dichroic dichroic coating, and the 4th workplace is coated with reflectance coating or dichroic dichroic coating;
DLP photomodulator; And
Projection lens device.
2. DLP minitype projection machine according to claim 1, it is characterized in that, a described LED luminescence chip, the 2nd LED luminescence chip and the 3rd LED luminescence chip send respectively the first light beam, the second light beam and the 3rd light beam, described the first light beam or the second light beam overlap with the central optical axis of the first collimation lens set, and described the 3rd light beam overlaps with the central optical axis of the second collimation lens set.
3. DLP minitype projection machine according to claim 1, is characterized in that, described beam shaping parts are made up of compound eye array lens or optical wand and the first relay lens.
4. DLP minitype projection machine according to claim 3, is characterized in that, described beam shaping parts are arranged at described between electro-optical device and described wedge shape optics, or are arranged between described wedge shape optics and described light beam guiding part.
5. according to the DLP minitype projection machine described in any one in claim 1 to 4, it is characterized in that, the dihedral angle that described the 3rd workplace and the 4th workplace form is greater than 1 ° and is less than 45 °.
6. DLP minitype projection machine according to claim 5, is characterized in that, the central optical axis angle that angle and described beam shaping parts are set of described wedge shape optics is greater than 15 ° and is less than 80 °.
7. DLP minitype projection machine according to claim 6, is characterized in that, described light beam guiding part comprises: a relay lens and a right-angle prism group.
8. DLP minitype projection machine according to claim 6, is characterized in that, described light beam guiding part comprises: a free-form surface lens and a right-angle prism.
9. DLP minitype projection machine according to claim 6, is characterized in that, described light beam guiding part comprises: a field lens and a catoptron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463525.4U CN203982065U (en) | 2014-08-15 | 2014-08-15 | DLP minitype projection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463525.4U CN203982065U (en) | 2014-08-15 | 2014-08-15 | DLP minitype projection machine |
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| Publication Number | Publication Date |
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| CN203982065U true CN203982065U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420463525.4U Expired - Fee Related CN203982065U (en) | 2014-08-15 | 2014-08-15 | DLP minitype projection machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155835A (en) * | 2014-08-15 | 2014-11-19 | 广景科技有限公司 | DLP mini projector |
| WO2016095619A1 (en) * | 2014-12-17 | 2016-06-23 | 广景科技有限公司 | Linear digital light procession micro projector |
| WO2017020636A1 (en) * | 2015-08-03 | 2017-02-09 | 广景视睿科技（深圳）有限公司 | Dlp mini projector |
| WO2021121301A1 (en) * | 2019-12-20 | 2021-06-24 | 深圳光峰科技股份有限公司 | Light beam calibration device, projection device, and light beam calibration method |
-
2014
- 2014-08-15 CN CN201420463525.4U patent/CN203982065U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155835A (en) * | 2014-08-15 | 2014-11-19 | 广景科技有限公司 | DLP mini projector |
| CN104155835B (en) * | 2014-08-15 | 2015-12-30 | 广景科技有限公司 | DLP miniature projector |
| WO2016095619A1 (en) * | 2014-12-17 | 2016-06-23 | 广景科技有限公司 | Linear digital light procession micro projector |
| WO2017020636A1 (en) * | 2015-08-03 | 2017-02-09 | 广景视睿科技（深圳）有限公司 | Dlp mini projector |
| WO2021121301A1 (en) * | 2019-12-20 | 2021-06-24 | 深圳光峰科技股份有限公司 | Light beam calibration device, projection device, and light beam calibration method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20160815 |