CN204086694U - Built-in type miniature projecting optical engine - Google Patents
Built-in type miniature projecting optical engine Download PDFInfo
- Publication number
- CN204086694U CN204086694U CN201420437988.3U CN201420437988U CN204086694U CN 204086694 U CN204086694 U CN 204086694U CN 201420437988 U CN201420437988 U CN 201420437988U CN 204086694 U CN204086694 U CN 204086694U
- Authority
- CN
- China
- Prior art keywords
- lens
- mirror
- total reflection
- reflection prism
- color separation
- 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
Landscapes
- Lenses (AREA)
Abstract
The utility model discloses a kind of built-in type miniature projecting optical engine, comprise: the light source that level sets gradually, collimating mirror, condenser, compound eye mirror and reflective mirror, be located at the field lens above reflective mirror, total reflection prism and Digital Micromirror Device successively, outside the exit facet of total reflection prism, be provided with projection lens; The light that light source sends is after collimating mirror, condenser, to connect subparallel light by compound eye mirror, after mirror reflection, and by field lens convergent beam, be incident upon in Digital Micromirror Device through total reflection prism, then by digital micromirror display chip, the light with picture signal turned back into total reflection prism, by projection lens projects out.The utility model based on the Digital Micromirror Device of up-to-date 0.2 inch as display chip, after the switch corner increase of this display chip, it is received before luminous energy power is compared and promotes 30%, adopts the light emitting diode light source of the highdensity integration packaging of small size, with improving optical efficiency, reduce power consumption.
Description
Technical field
The utility model relates to projecting optical engine, especially relates to built-in type miniature projecting optical engine.
Background technology
We know that mobile phone and panel computer are the most popular products of personal consumption class in the last few years, with mobile phone and panel computer is supporting and the product of related service class also surges forward thereupon, the renewal of technology and function is very fast, and marketing gimmick class is numerous, becomes businessman and strives the field of wanting to round up and hunt.
By mobile phone and the built-in projecting function of panel computer, thus virtual amplifying display screen curtain, Dou Shi businessman expects a technology of development all the time, industry resource is also doing the trial of this respect always, although the mobile phone after configuration projecting function and panel computer, the experience of taking on a new look is brought to user, but relatively high in power consumption due to built-in projecting optical engine, the restriction of the relatively large and relatively high three aspect factor of price of volume, the application of mobile phone and panel computer configuration projecting function also only rests on minority brand company, the tentative application that high-end machine does, certain distance is remained from the popular application product of masses.
Based on above analysis, built-in projecting optical engine is microminiaturized and lower power consumption is future technical advances direction.
Therefore, how to design a kind of compact conformation, built-in type miniature projecting optical engine that optical efficiency is high is industry technical matters urgently to be resolved hurrily.
Utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of compact conformation, built-in type miniature projecting optical engine that optical efficiency is high.
The technical solution adopted in the utility model is, design a kind of built-in type miniature projecting optical engine, comprise: the light source that level sets gradually, collimating mirror, condenser, compound eye mirror and reflective mirror, be located at the field lens above reflective mirror, total reflection prism and Digital Micromirror Device successively, outside the exit facet of described total reflection prism, be provided with projection lens; The light that light source sends is after collimating mirror, condenser, to connect subparallel light by compound eye mirror, after mirror reflection, and by field lens convergent beam, be incident upon in Digital Micromirror Device through total reflection prism, then by digital micromirror display chip, the light with picture signal turned back into total reflection prism, by projection lens projects out; The optical axis that light source, collimating mirror, condenser and compound eye mirror are formed is parallel with the optical axis of projection lens.
About the orientation of illumination component distribution, the first orientation is, described light source and projection lens are arranged on the opposite side of total reflection prism.
The second orientation is, described light source and projection lens are arranged on the same side of total reflection prism.
Described projection lens is made up of horizontally disposed first biconvex lens, the first meniscus lens, the first biconcave lens, the second biconvex lens, the 3rd biconvex lens and the light hurdle be located between the first meniscus lens and the first biconcave lens successively, and described 3rd biconvex lens is near total reflection prism; Described first biconvex lens, the first meniscus lens and the 3rd biconvex lens all adopt plastic material to make, and described first biconcave lens, the second biconvex lens all adopt glass material to make; First biconcave lens and the second biconvex lens form cemented doublet group.
About the structure of total reflection prism, the first structure is, total reflection prism can be single right-angle prism, and the normal on described total reflection prism inclined-plane and the central shaft angle of field lens are 22.5 °.
The second structure is, total reflection prism also can be bonded by right-angle prism and angle of wedge prism, and the inclined-plane of right-angle prism and the inclined-plane of angle of wedge prism are bonding plane, leave clearance between the inclined-plane of described right-angle prism and the inclined-plane of angle of wedge prism.
About the structure of light source, the first structure is, light source comprises: red diodes, be located at the ruddiness collimating mirror below red diodes, anti-green color separation film, anti-yellow color separation film successively, side by side up and downly be located at anti-green color separation film, the green diode of anti-yellow color separation film the same side and blue light diode, be located at the collector lens of described anti-yellow color separation film opposite side, be located at the green glow collimating mirror between green diode and anti-green color separation film, be located at the blue light collimating mirror between blue light diode and anti-yellow color separation film; Described red diodes is vertical with the optical axis of green diode, and green diode is parallel with the optical axis of blue light diode.
The second structure is, light source comprises: the green diode that level sets gradually, green glow collimating mirror, wedge shape color separation film and collector lens, be located at the red blue light collimating mirror above wedge shape color separation film, be located at the red diodes above red blue light collimating mirror and blue light diode side by side; The featheredge end of described wedge shape color separation film is located between red blue light collimating mirror and green glow collimating mirror, webbing end near collector lens, wedge shape color separation film is arranged horizontal by 45 ° of oblique angles.
The two sides of described compound eye mirror is evenly distributed is covered with unit sphere, and described unit spherical surface type is sphere, bore is rectangle, and length and width ratio is 1.5, and the ratio of compound eye mirror thickness and compound eye mirror long limit clear aperture is 1.57.
Described Digital Micromirror Device adopts 0.2 inch, pixel size is the digital micromirror display chip of 0.0054 millimeter.
The utility model based on the Digital Micromirror Device of up-to-date 0.2 inch as display chip, the switch corner of this display chip increases, and it is received before luminous energy power is compared and promotes 30%, adopts the light emitting diode light source of the highdensity integration packaging of small size, with improving optical efficiency, reduce power consumption.
Compared with prior art, the utility model has the following advantages:
1, optical design space is tight, and optical element is thin little, and compact structure is compact, by designing illuminator and the projection lens of larger clear aperature, realizes the optimization of optical efficiency.
2, adopt plastic cement optical aspherical surface lens and Glass optical lens combination, promote design objective, optimize packaging technology simultaneously, be convenient to a large amount of production.
Accompanying drawing explanation
Below in conjunction with embodiment and accompanying drawing, the utility model is described in detail, wherein:
Fig. 1 is the same side that light source and projection lens are located at total reflection prism;
Fig. 2 is the opposite side that light source and projection lens are located at total reflection prism;
Fig. 3 is the lens combination cut-open view of projection lens;
Fig. 4 is total reflection prism is the prism arrangement part figure being with clearance;
Fig. 5 to be light source be red, green, blue optical diode three tunnel photosynthetic and light path move towards figure;
The light path that red, the blue light diode two-way light path of Fig. 6 to be light source be green diode and group encapsulates merge moves towards figure;
Fig. 7 is the schematic appearance of compound eye mirror;
Fig. 8 is the curve map that in embodiment, projection lens analog computation draws modulation transfer function.
Embodiment
As shown in Figure 1, 2, the built-in type miniature projecting optical engine that the utility model proposes, comprise: the light source 9 that level sets gradually, collimating mirror 8, condenser 7, compound eye mirror 6 and reflective mirror 5, be located at the field lens 4 above reflective mirror, total reflection prism 3 and Digital Micromirror Device 2 successively; Total reflection prism is reflective total reflection prism, one vertical plane of total reflection prism 3 be horizontally disposed with and its inclined-plane towards reflective mirror 5, field lens 4 is obliquely installed and angle of inclination coordinates with the inclined-plane of total reflection prism 3, reflective mirror 5 bottom is obliquely installed towards the inclined-plane of total reflection prism 3 near compound eye mirror 6, top, Digital Micromirror Device 2 is positioned at above the horizontally disposed vertical plane of total reflection prism 3, is provided with projection lens 1 outside another vertical plane of total reflection prism 3.The optical axis that light source 9, collimating mirror 8, condenser 7 and compound eye mirror 6 are formed is parallel with the optical axis of projection lens 1.
About the orientation of illumination component distribution, as shown in Figure 1, the first orientation is, light source 9 and projection lens 1 are arranged on the opposite side of total reflection prism 3.The light that light source 9 sends, after collimating mirror 8 and condenser 7, to connect subparallel light by compound eye mirror 6, after reflective mirror 5 reflects, and assembled by field lens 4, reflect into total reflection prism 3, and with certain angles in Digital Micromirror Device 2, after Digital Micromirror Device 2 being in the micromirror reflects of bright state, impinge perpendicularly on the right-angle surface of total reflection prism 3, and after the total reflection of the inclined-plane of total reflection prism 3, shine projection lens 1, be exaggerated and cast out.
As shown in Figure 2, the second orientation is, light source 9 and projection lens 1 are arranged on the same side of total reflection prism 3.Its ray cast process is identical with the first orientation.
As shown in Figure 3, projection lens 1 is made up of horizontally disposed first biconvex lens 1a, the first meniscus lens 1b, the first biconcave lens 1c, the second biconvex lens 1d, the 3rd biconvex lens 1e and the light hurdle 1f be located between the first meniscus lens 1b and the first biconcave lens 1c successively, and the 3rd biconvex lens 1e is near total reflection prism 3; First biconvex lens 1a, the first meniscus lens 1b and the 3rd biconvex lens 1e all adopt plastic material to make, first biconcave lens 1c, the second biconvex lens 1d all adopt glass material to make, and the first biconcave lens 1c and the second biconvex lens 1d forms cemented doublet group.
Wherein, the focal power of the first biconvex lens 1a is 0.033, and Abbe number is that 29.9, two convex surfaces are aspheric surface.The focal power of the first meniscus lens 1b is-0.039, and Abbe number is that 29.9, two convex surfaces are aspheric surface.The focal power of the first biconcave lens 1c is-0.27, and Abbe number is 25.7, and two sides is sphere.The focal power of the second biconvex lens 1d is 0.16, and Abbe number is 53.8, and two sides is sphere.The focal power of the 3rd biconvex lens 1e is 0.16, and Abbe number is that 56.1, two convex surfaces are aspheric surface.
About the structure of total reflection prism, the first structure is, total reflection prism 3 can be single right-angle prism, and the normal on total reflection prism 3 inclined-plane and the central shaft angle of field lens 4 are 22.5 °.
As shown in Figure 4, the second structure is, total reflection prism 3 is bonded by right-angle prism 3a and angle of wedge prism 3b, the inclined-plane of right-angle prism 3a and the inclined-plane of angle of wedge prism 3b are bonding plane, leave clearance 3c between the inclined-plane of right-angle prism 3a and the inclined-plane of angle of wedge prism 3b, the size of clearance is maximum can to 0.1 millimeter.
About the structure of light source, as shown in Figure 5, the first structure is, light source 9 comprises: red diodes 9c, be located at the ruddiness collimating mirror 8c below red diodes 9c successively, anti-green color separation film 10b, anti-yellow color separation film 10a, side by side up and downly be located at anti-green color separation film 10b, the green diode 9b of anti-yellow color separation film 10a the same side and blue light diode 9a, be located at the collector lens 7 of anti-yellow color separation film 10a opposite side, be located at the green glow collimating mirror 8b between green diode 9b and anti-green color separation film 10b, be located at the blue light collimating mirror 8a between blue light diode 9a and anti-yellow color separation film 10a, red diodes 9c is vertical with the optical axis of green diode 9b, and green diode 9b is parallel with the optical axis of blue light diode 9a.
After the light that ruddiness diode 9c and green glow diode 9b sends separately collimates respectively through the ruddiness collimating mirror 8c before separately and green glow collimating mirror 8b, to be merged by anti-green color separation film 10b at meet and form yellow light path; The light that blue light diode 9a sends, after blue light collimating mirror 8a in front collimates, converges with yellow light path, merges formation white light, after collector lens 7, form Path of Convergent Rays at meet through the anti-yellow color separation film 10a laid.
As shown in Figure 6, the second structure is, light source 9 comprises: the green diode 9b that level sets gradually, green glow collimating mirror 8b, wedge shape color separation film 10c and collector lens 7, be located at the red blue light collimating mirror 8d above wedge shape color separation film 10c, be located at the red diodes 9c above red blue light collimating mirror 8d and blue light diode 9a side by side; The featheredge end of wedge shape color separation film 10c is located between red blue light collimating mirror 8d and green glow collimating mirror 8b, webbing end near collector lens, wedge shape color separation film 10c is arranged horizontal by 45 ° of oblique angles.The function of wedge shape color separation film 10c is mixed by the light from ruddiness diode 9c, green glow diode 9b and blue light diode 9a, and according to close to consistent direction outgoing.
Ruddiness diode 9c is together with blue light diode 9a group encapsulates, share a substrate, share a red blue collimating mirror 8d, form a light path, its mixing light beam with from the green glow diode 9b with it close to vertical direction send and after green glow collimating mirror 8b light beam converge, at the mixed light of wedge shape color separation film 10c outgoing of meet through laying, according to close to consistent direction outgoing, and form Path of Convergent Rays after collector lens 7.
As shown in Figure 7, the two sides of compound eye mirror 6 is evenly distributed is covered with unit sphere, and unit spherical surface type is sphere, bore is rectangle, and length and width ratio is 1.5, and the ratio that compound eye mirror 6 thickness and the long limit of compound eye mirror 6 lead to light effective aperture is 1.57.The light that light source 9 sends after collimating mirror 8 collimates, emergent light after condenser 7 is assembled to connect subparallel smooth outgoing, by compound eye mirror 6, by compound eye mirror 6 by beam shaping, and the illumination light that forming energy is evenly distributed.
Shown in Fig. 8 be, the display frame of Digital Micromirror Device is of a size of 0.2 inch, pixel size is 0.0054 millimeter, f-number be 1.7, picture along application example when minor face skew 100%, the projection lens analog computation that the utility model relates to draws the curve map of modulation transfer function in whole visual field.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. built-in type miniature projecting optical engine, it is characterized in that comprising: the light source that level sets gradually, collimating mirror, condenser, compound eye mirror and reflective mirror, be located at the field lens above reflective mirror, total reflection prism and Digital Micromirror Device successively, outside the exit facet of described total reflection prism, be provided with projection lens;
The light that light source sends is after collimating mirror, condenser are assembled, by compound eye mirror by beam shaping, again after mirror reflection, by field lens convergent beam, be incident upon in Digital Micromirror Device through total reflection prism, then by digital micromirror display chip, the light with picture signal turned back into total reflection prism, by projection lens projects out;
The optical axis that light source, collimating mirror, condenser and compound eye mirror are formed is parallel with the optical axis of projection lens.
2. built-in type miniature projecting optical engine as claimed in claim 1, it is characterized in that, described light source and projection lens are arranged on the opposite side of total reflection prism.
3. built-in type miniature projecting optical engine as claimed in claim 1, it is characterized in that, described light source and projection lens are arranged on the same side of total reflection prism.
4. built-in type miniature projecting optical engine as claimed in claim 1, it is characterized in that, described projection lens is made up of horizontally disposed first biconvex lens, the first meniscus lens, the first biconcave lens, the second biconvex lens, the 3rd biconvex lens and the light hurdle be located between the first meniscus lens and the first biconcave lens successively, and described 3rd biconvex lens is near total reflection prism;
Described first biconvex lens, the first meniscus lens and the 3rd biconvex lens all adopt plastic material to make, and described first biconcave lens, the second biconvex lens all adopt glass material to make;
First biconcave lens and the second biconvex lens form cemented doublet group.
5. built-in type miniature projecting optical engine as claimed in claim 1, it is characterized in that, described total reflection prism is single right-angle prism, and the normal on described total reflection prism inclined-plane and the central shaft angle of field lens are 22.5 °.
6. built-in type miniature projecting optical engine as claimed in claim 1, it is characterized in that, described total reflection prism is bonded by right-angle prism and angle of wedge prism, the inclined-plane of right-angle prism and the inclined-plane of angle of wedge prism are bonding plane, leave clearance between the inclined-plane of described right-angle prism and the inclined-plane of angle of wedge prism.
7. built-in type miniature projecting optical engine as claimed in claim 1, it is characterized in that, described light source comprises: red diodes, be located at the ruddiness collimating mirror below red diodes, anti-green color separation film, anti-yellow color separation film successively, side by side up and downly be located at anti-green color separation film, the green diode of anti-yellow color separation film the same side and blue light diode, be located at the collector lens of described anti-yellow color separation film opposite side, be located at the green glow collimating mirror between green diode and anti-green color separation film, be located at the blue light collimating mirror between blue light diode and anti-yellow color separation film;
Described red diodes is vertical with the optical axis of green diode, and green diode is parallel with the optical axis of blue light diode.
8. built-in type miniature projecting optical engine as claimed in claim 1, it is characterized in that, described light source comprises: the green diode that level sets gradually, green glow collimating mirror, wedge shape color separation film and collector lens, be located at the red blue light collimating mirror above wedge shape color separation film, be located at the red diodes above red blue light collimating mirror and blue light diode side by side;
The featheredge end of described wedge shape color separation film is located between red blue light collimating mirror and green glow collimating mirror, webbing end near collector lens, wedge shape color separation film is arranged horizontal by 45 ° of oblique angles.
9. built-in type miniature projecting optical engine as claimed in claim 1, it is characterized in that, the two sides of described compound eye mirror is evenly distributed is covered with unit sphere, described unit spherical surface type is sphere, bore is rectangle, length and width ratio is 1.5, and the ratio that compound eye mirror thickness and the long limit of compound eye mirror lead to light effective aperture is 1.57.
10. built-in type miniature projecting optical engine as claimed in claim 1, it is characterized in that, the display frame of described Digital Micromirror Device is of a size of 0.2 inch, and pixel size is 0.0054 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420437988.3U CN204086694U (en) | 2014-08-06 | 2014-08-06 | Built-in type miniature projecting optical engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420437988.3U CN204086694U (en) | 2014-08-06 | 2014-08-06 | Built-in type miniature projecting optical engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204086694U true CN204086694U (en) | 2015-01-07 |
Family
ID=52179394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420437988.3U Active CN204086694U (en) | 2014-08-06 | 2014-08-06 | Built-in type miniature projecting optical engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204086694U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812934A (en) * | 2020-08-31 | 2020-10-23 | 南阳南方智能光电有限公司 | Single right-angle prism LED micro projection lighting system |
| CN114594651A (en) * | 2020-12-07 | 2022-06-07 | 宁波舜宇车载光学技术有限公司 | Projection system, preparation method and lamp |
-
2014
- 2014-08-06 CN CN201420437988.3U patent/CN204086694U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812934A (en) * | 2020-08-31 | 2020-10-23 | 南阳南方智能光电有限公司 | Single right-angle prism LED micro projection lighting system |
| CN114594651A (en) * | 2020-12-07 | 2022-06-07 | 宁波舜宇车载光学技术有限公司 | Projection system, preparation method and lamp |
| CN114594651B (en) * | 2020-12-07 | 2024-06-11 | 宁波舜宇车载光学技术有限公司 | Projection system, manufacturing method and lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103277739B (en) | A kind of optical lens | |
| CN104298063B (en) | Transparent projection screens | |
| US8393777B2 (en) | Etendue-conserving illumination-optics for backlights and frontlights | |
| CN101900292B (en) | Condenser lens and lamp using same | |
| CN101191853B (en) | Optical plate | |
| CN101196575A (en) | Optical plate | |
| CN102287679A (en) | Light source module and backlight module | |
| CN101900294B (en) | Condensing lens and lamp using same | |
| CN203849450U (en) | Light guide plate | |
| CN101196576A (en) | Optical plate | |
| CN202676987U (en) | Polarization optical splitter and projecting apparatus | |
| CN204496039U (en) | Optical lens and annular projection's display system thereof | |
| CN102565897A (en) | Prism system and projector with same | |
| CN101196582B (en) | Optical plate | |
| CN101900293A (en) | Condenser lens and lamp using same | |
| CN109581797A (en) | A kind of highlighted LED micro projection lighting system of four-way | |
| CN204883152U (en) | Miniature projector of DLP | |
| CN204086694U (en) | Built-in type miniature projecting optical engine | |
| CN101191850A (en) | Optical plate | |
| CN101196584A (en) | Optical plate | |
| CN101196573A (en) | Optical plate | |
| CN101191851A (en) | Optical plate | |
| CN103912797A (en) | Backlight module | |
| CN103186027A (en) | Dodging device for micro-projector | |
| CN204964979U (en) | Projection illumination optical path |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN HUOLE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHANG JIANPING Effective date: 20150729 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150729 Address after: The central Shenzhen city of Guangdong Province, 518000 Keyuan Road, Nanshan District science and Technology Park No. 15 Kexing Science Park Building 4 unit B floor 10 No. 01 Patentee after: Shenzhen Huole Technology Development Co.,Ltd. Address before: 518000 C2 building, Longgang street, Longgang District, Shenzhen District, Guangdong 603, China Patentee before: Zhang Jianping |