CN110646911A - Collimating projection lens - Google Patents
Collimating projection lens Download PDFInfo
- Publication number
- CN110646911A CN110646911A CN201911057826.0A CN201911057826A CN110646911A CN 110646911 A CN110646911 A CN 110646911A CN 201911057826 A CN201911057826 A CN 201911057826A CN 110646911 A CN110646911 A CN 110646911A
- Authority
- CN
- China
- Prior art keywords
- frame
- lens
- slide
- fixed
- projection
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 40
- 239000003292 glue Substances 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/026—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
Abstract
The invention discloses a collimation projection lens, which comprises a lens frame and a projection lens fixing frame, wherein a projection lens is fixed on the projection lens fixing frame, an optical lens group and a light collimating mirror are fixed in the lens frame, a slot for the projection lens fixing frame to be inserted into the lens frame from the side face is formed in the side face of the lens frame, and the projection lens fixing frame is detachably assembled in the lens frame and enables the projection lens to be positioned between the optical lens group and the light collimating mirror so as to form the collimation projection lens. The invention has simple structure and quick and convenient replacement process of the slide, when the slide needs to be replaced, only the fixing frame of the slide needs to be disassembled from the side surface of the mirror frame, and then the fixing frame of the slide fixed with a new slide is reassembled into the slot on the side surface of the mirror frame, so that the whole lens does not need to be disassembled, and the replacement efficiency and the operation simplicity are improved.
Description
Technical Field
The invention relates to the technical field of lenses, in particular to a collimating projection lens.
Background
The structural design of the collimation projection optical system in the current market comprises two schemes: 1. the buckle is designed in a split manner, so that the structure is complex, and a plurality of components are provided; the combination tolerances are difficult to manage. Although the projection chart (hereinafter referred to as "slide") in the system can be replaced, it is difficult to disassemble and assemble the projector. 2. The buckling design structure is simple, but the precision is low, and the optical system with high resolution cannot be supported; the shape and combination mode of the lens are also highly required, and the whole lens must be disassembled to replace the projection film, so that the capability of flexibly changing the projection film is not provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a collimation projection lens, which mainly solves the technical problems that the prior projection lens cannot rapidly and conveniently better project a slide and the like.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a collimation projecting lens, includes picture frame and the fixed frame of slide, is fixed with the slide on the fixed frame of slide, and the picture frame internal fixation has optical lens group and light collimating mirror, has seted up one on the side of picture frame and has supplied the fixed frame of slide to insert the slot in the picture frame from the side adaptation, and the fixed frame detachably of slide assembles among the picture frame and makes the slide be in between optical lens group and the light collimating mirror in order to form collimation projecting lens.
Furthermore, the fixed frame of the slide is detachably fixed in the mirror frame through a fixing structure, and the optical centers of the optical lens group, the slide and the light collimating lens are kept coaxial and consistent.
Furthermore, be formed with spacing lug on the fixed frame tip of projection piece, be formed with in the slot of picture frame can with spacing lug matched with supporting platform, and form an elastic buckle respectively on the fixed frame both sides of projection piece, form one respectively on two inside walls of slot can with elastic buckle matched with bellying, support leaning on cooperation and elastic buckle and the buckle cooperation of bellying through spacing lug and supporting platform and make the fixed frame of projection piece fix in the slot of picture frame.
Furthermore, the fixed frame of the slide is fixed with the mirror frame through a screw locking structure.
Furthermore, a light hole is formed in the fixed frame of the slide, the slide is fixed on the fixed frame of the slide, and the optical centers of the slide and the light hole are coaxially consistent.
Furthermore, the slide is fixed with the slide fixing frame through glue dispensing.
Furthermore, a concave part which can be used for the adaptive embedding of the slide is arranged on the slide fixing frame, and a dispensing slot which is convenient for dispensing is arranged on the periphery of the concave part so as to fix the slide in the concave part.
Furthermore, the projection sheet fixing frame is provided with a limiting part which can press the projection sheet in the concave part, the distance between the bottom of the limiting part and the bottom surface of the concave part is matched with the thickness of the projection sheet, and one side of the concave part is open, so that the projection sheet can be embedded into the concave part from the side surface in a matching way.
Further, the optical lens group comprises three optical lenses.
Furthermore, four bearing and leaning platforms which are respectively matched with the three optical lenses and the light collimating lens are arranged in the mirror frame, the three optical lenses and the light collimating lens are respectively assembled on the corresponding bearing and leaning platforms, a glue dispensing groove is formed beside each bearing and leaning platform, and the optical lenses and the light collimating lens are respectively fixed on the corresponding bearing and leaning platforms through glue dispensing in the glue dispensing grooves.
The collimating projection lens has the following advantages:
the projection piece is fixed on the fixed frame of projection piece, and the fixed frame of projection piece passes through the slot on the picture frame side and is in the same place with picture frame detachably assembly, and after the slot on the fixed frame of projection piece follow picture frame side inserted, the projection piece can be set up between optical lens group and light collimating mirror and then can form collimation projecting lens, and because the fixed frame of projection piece is dismantled with the picture frame and links together. Therefore, the collimating projection lens has simple structure, the replacement process of the projection film is quick and convenient, when the projection film needs to be replaced, only the projection film fixing frame needs to be detached from the side surface of the lens frame, and then the projection film fixing frame fixed with a new projection film is reassembled into the slot on the side surface of the lens frame, so that the whole lens does not need to be detached, and the replacement efficiency and the operation simplicity are improved.
Drawings
Fig. 1 is a schematic perspective view of a frame and a slide holder according to an embodiment of the present invention when assembled together.
Fig. 2 is a schematic view of another angular perspective structure of fig. 1.
Fig. 3 is a perspective view illustrating the mounting and dismounting of the frame and the slide holder according to the embodiment of the present invention.
Fig. 4 is a sectional view of the internal structure of the embodiment of the present invention.
Fig. 5 is a sectional view a-a in fig. 2.
Fig. 6 is a schematic structural view of the embodiment of the present invention in which the slide is fixed to the slide fixing frame.
Fig. 7 is a schematic view of the assembly of the slide and the slide holder according to the embodiment of the present invention.
Fig. 8 is a schematic view of another angle assembly of the slide and the slide holder according to the embodiment of the present invention.
Description of reference numerals:
1. the projection lens comprises a lens frame, 2, a projection lens fixing frame, 3, a projection lens, 4, an optical lens group, 5, a light collimating mirror, 11, a slot, 12, a positioning column, 13, a locking hole, 21, a limiting bump, 22, an elastic buckle, 23, a light hole, 24, a concave portion, 25, a dispensing groove, 26, a limiting portion, 111, a supporting platform, 112 and a protruding portion.
Detailed Description
The invention is further described with reference to the following figures and examples.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 to 4, in the embodiment, a collimating projection lens includes a lens frame 1 and a lens holder 2, a lens 3 is fixed on the lens holder 2, an optical lens assembly 4 and a light collimator 5 are fixed in the lens frame 1, a slot 11 is formed in a side surface of the lens frame 1 for the lens holder 2 to be inserted into the lens frame 1 from the side surface, and the lens holder 2 is detachably assembled in the lens frame 1 and enables the lens 3 to be located between the optical lens assembly 4 and the light collimator 5 to form a collimating projection lens. In this embodiment, the slide 3 is fixed on the slide fixing frame 2, and the slide fixing frame 2 is detachably assembled with the lens frame 1 through the insertion slot 11 on the side surface of the lens frame 1, and after the slide fixing frame 2 is inserted from the insertion slot 11 on the side surface of the lens frame 1, the slide 3 can be set between the optical lens group 4 and the light collimating lens 5 to form a collimating projection lens, and the slide fixing frame 2 is detachably connected with the lens frame 1. Therefore, its simple structure of collimation projection lens of this embodiment, 3 processes of changing of slide are swift convenient, when needing to change slide 3, only need to pull out the fixed frame 2 of slide from picture frame 1 side, then will be fixed with the fixed frame 2 of slide of new slide 3 assemble again to the slot 11 on the picture frame 1 side go can, need not to dismantle whole camera lens, improve change efficiency and easy and simple to handle nature.
Referring to fig. 1 to 5, in the present embodiment, the slide fixing frame 2 is detachably fixed in the frame 1 through a fixing structure, and keeps the optical centers of the optical lens group 4, the slide 3 and the light collimator 5 coaxially consistent. In this embodiment, preferably, a limit protrusion 21 is formed on an end of the fixed frame 2, a supporting platform 111 capable of being matched with the limit protrusion 21 is formed in the slot 11 of the lens frame 1, and an elastic buckle 22 is formed on each of two sides of the fixed frame 2, a protruding portion 112 capable of being matched with the elastic buckle 22 is formed on each of two inner side walls of the slot 11, the limit protrusion 21 and the supporting platform 111 abut against and cooperate to limit an insertion depth of the fixed frame 2 in the slot 11, and the elastic buckle 22 and the protruding portion 112 abut against and cooperate to limit the fixed frame 2 to exit from the slot 11, so that a fixing structure is formed by the abutting cooperation of the limit protrusion 21 and the supporting platform 111 and the engaging and cooperating of the elastic buckle 22 and the protruding portion 112 to fix the fixed frame 2 in the slot 11 of the lens frame 1. However, it should be understood by those skilled in the art that in other embodiments, the fixed frame 2 can be fixed to the frame 1 by other fixing structures, for example, after the fixed frame 2 is inserted into the slot 11, the fixed frame 2 is fixed to the frame 1 by a screw locking structure, so that the optical centers of the optical lens assembly 4, the slide 3 and the light collimating mirror 5 are stably kept coaxial. It can be understood that, when the fixed frame 2 of the slide is fixed to the frame 1 by the screw locking structure, the limiting projection 21 may be provided with a counter bore (not shown), the supporting platform 111 may be provided with a screw hole corresponding to the counter bore, when the fixed frame 2 of the slide is inserted into the slot 11 in place to make the limiting projection 21 abut against the supporting platform 111, and then the fixed frame 2 of the slide and the frame 1 may be fixed together by locking the screw in from the counter bore (not shown) of the limiting projection 21. In addition, in other embodiments, the slide fixing frame 2 may not be provided with the limiting protrusion 21 and the elastic buckle 22, but screw holes (not shown) are formed on two sides of the slide fixing frame 2, and a lock hole (not shown) extending into the slot 11 is formed on the outer side of the lens frame 1, when the slide fixing frame 2 is inserted into the slot 11, the screw hole (not shown) on the side surface of the slide fixing frame 2 coaxially corresponds to the lock hole (not shown) on the side surface of the lens frame 1, and then the slide fixing frame 2 and the lens frame 1 can be stably locked together by locking screws from the screw hole on the side surface of the lens frame 1.
Referring to fig. 6 to 8, in the present embodiment, preferably, the slide fixing frame 2 is provided with a light hole 23, the slide 3 is fixed on the slide fixing frame 2, and the optical centers of the slide 3 and the light hole 23 are coaxially aligned.
Referring to fig. 6 to 8, in the present embodiment, the slide 3 is preferably fixed to the slide fixing frame 2 by dispensing. In this embodiment, preferably, the fixed frame 2 of the slide has a recess 24 for the slide 3 to fit into, and the recess 24 has a dispensing slot 25 for dispensing glue to fix the slide 3 in the recess 24. After the slide 3 is fitted into the concave portion 24, the slide 3 can be firmly fixed to the slide holder 2 by dispensing in the dispensing groove 25.
Referring to fig. 7 and 8, in the present embodiment, preferably, the slide fixing frame 2 further includes a limiting portion 26 capable of pressing the slide 3 into the recess 24, a distance between a bottom of the limiting portion 26 and a bottom surface of the recess 24 is adapted to a thickness of the slide 3, and one side of the recess 24 is open so that the slide 3 can be fittingly inserted into the recess 24 from a side surface. In this embodiment, the assembling process of the slide 3 and the slide fixing frame 2 is as follows: the slide 3 is first inserted into the recess 24 from the open side of the recess 24, and after the slide 3 is inserted in place, the slide 3 is firmly fixed in the recess 24 of the slide holder 2 by dispensing in the dispensing groove 25, thereby completing the assembly.
Referring to fig. 4, in the present embodiment, the optical lens group 4 preferably includes three optical lenses. Four bearing platforms respectively matched with three optical lenses and a light collimating lens 5 are arranged in the mirror frame 1, the three optical lenses and the light collimating lens 5 are respectively assembled on the corresponding bearing platforms, a dispensing groove is formed beside each bearing platform, and the optical lenses and the light collimating lens 5 are respectively fixed on the corresponding bearing platforms through dispensing in the dispensing grooves. In addition, the lens frame 1 is provided with a positioning column 12 and a locking hole 13 which facilitate the assembly of the lens frame 1 on a PCB. In this embodiment, each lens is pressed, dispensed and cured by a single lens and supported by a platform, so the assembly stability is high, the optical sensitivity is easily met, and the stability in the tolerance test is high.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and these modifications or substitutions do not make the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention, so that all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
Claims (10)
1. A collimating projection lens, comprising: including picture frame (1) and the fixed frame of projection piece (2), be fixed with projection piece (3) on the fixed frame of projection piece (2), picture frame (1) internal fixation has optical lens group (4) and light collimating mirror (5), set up one on the side of picture frame (1) and supply the fixed frame of projection piece (2) to insert slot (11) in picture frame (1) from the side adaptation, the fixed frame of projection piece (2) detachably assembles among picture frame (1) and makes projection piece (3) be in between optical lens group (4) and light collimating mirror (5) in order to form collimation projecting lens.
2. The collimating projection lens of claim 1, wherein: the fixed frame (2) of the slide is detachably fixed in the mirror frame (1) through a fixed structure, and the optical centers of the optical lens group (4), the slide (3) and the light collimating mirror (5) are kept coaxial and consistent.
3. The collimating projection lens of claim 2, wherein: be formed with spacing lug (21) on the fixed frame of projection (2) tip, be formed with in slot (11) of picture frame (1) can with spacing lug (21) matched with supporting platform (111), and form an elastic buckle (22) on the fixed frame of projection (2) both sides respectively, form one respectively on two inside walls of slot (11) can with elastic buckle (22) matched with bellying (112), support leaning on cooperation and elastic buckle (22) and the buckle cooperation of bellying (112) through spacing lug (21) and supporting platform (111) and make the fixed frame of projection (2) fix in slot (11) of picture frame (1).
4. The collimating projection lens of claim 2, wherein: the fixed frame (2) of the slide is fixed with the mirror frame (1) through a screw locking structure.
5. The collimating projection lens of claim 1, wherein: the light-transmitting hole (23) is formed in the projector fixing frame (2), the projector (3) is fixed to the projector fixing frame (2), and the optical centers of the projector (3) and the light-transmitting hole (23) are coaxially consistent.
6. The collimating projection lens of claim 5, wherein: the slide (3) is fixed with the slide fixing frame (2) through glue dispensing.
7. The collimating projection lens of claim 6, wherein: the projector fixing frame (2) is provided with a concave part (24) which can be used for the adaptive embedding of the projector (3), and the periphery of the concave part (24) is provided with a dispensing groove (25) which is convenient for dispensing so as to fix the projector (3) in the concave part (24).
8. The collimating projection lens of claim 7, wherein: the slide fixing frame (2) is provided with a limiting part (26) which can press the slide (3) in the concave part (24) in a propping manner, the distance between the bottom of the limiting part (26) and the bottom surface of the concave part (24) is matched with the thickness of the slide (3), and one side of the concave part (24) is open, so that the slide (3) can be embedded into the concave part (24) from the side surface in a matching manner.
9. The collimating projection lens of any of claims 1 to 8, wherein: the optical lens group (4) comprises three optical lenses.
10. The collimating projection lens of claim 9, wherein: four bearing and leaning platforms which are respectively matched with the three optical lenses and the light collimating lens (5) are arranged in the mirror frame (1), the three optical lenses and the light collimating lens (5) are respectively assembled on the corresponding bearing and leaning platforms, a dispensing groove is formed beside each bearing and leaning platform, and the optical lenses and the light collimating lens (5) are respectively fixed on the corresponding bearing and leaning platforms through dispensing in the dispensing grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911057826.0A CN110646911A (en) | 2019-11-01 | 2019-11-01 | Collimating projection lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911057826.0A CN110646911A (en) | 2019-11-01 | 2019-11-01 | Collimating projection lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110646911A true CN110646911A (en) | 2020-01-03 |
Family
ID=68995496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911057826.0A Pending CN110646911A (en) | 2019-11-01 | 2019-11-01 | Collimating projection lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110646911A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10268189A (en) * | 1997-03-28 | 1998-10-09 | Asahi Glass Co Ltd | Projection optical device |
| CN2304927Y (en) * | 1997-06-13 | 1999-01-20 | 万樟工业股份有限公司 | Multifunctional image projector |
| US6552859B1 (en) * | 1999-12-28 | 2003-04-22 | Sekinos Co., Ltd. | Lens apparatus for projection |
| US20160246034A1 (en) * | 2015-02-25 | 2016-08-25 | Fujifilm Corporation | Projection optical system and projection type display device |
| JP2019002969A (en) * | 2017-06-13 | 2019-01-10 | セイコーエプソン株式会社 | Projection optical device and projector |
| CN210488093U (en) * | 2019-11-01 | 2020-05-08 | 厦门力鼎光电股份有限公司 | Collimating projection lens |
-
2019
- 2019-11-01 CN CN201911057826.0A patent/CN110646911A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10268189A (en) * | 1997-03-28 | 1998-10-09 | Asahi Glass Co Ltd | Projection optical device |
| CN2304927Y (en) * | 1997-06-13 | 1999-01-20 | 万樟工业股份有限公司 | Multifunctional image projector |
| US6552859B1 (en) * | 1999-12-28 | 2003-04-22 | Sekinos Co., Ltd. | Lens apparatus for projection |
| US20160246034A1 (en) * | 2015-02-25 | 2016-08-25 | Fujifilm Corporation | Projection optical system and projection type display device |
| JP2019002969A (en) * | 2017-06-13 | 2019-01-10 | セイコーエプソン株式会社 | Projection optical device and projector |
| CN210488093U (en) * | 2019-11-01 | 2020-05-08 | 厦门力鼎光电股份有限公司 | Collimating projection lens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7327527B2 (en) | Lens supporting frame of lens device and method of adjusting the same | |
| US4794240A (en) | Bar code scanner construction | |
| CN101470241B (en) | Lens mounting stand | |
| CN210488093U (en) | Collimating projection lens | |
| CN214375507U (en) | Prism positioning structure, optical machine and projector | |
| US7572032B2 (en) | Lamp assembly of a projection apparatus | |
| CN110646911A (en) | Collimating projection lens | |
| US6575606B2 (en) | Light source mounting apparatus for liquid crystal projector | |
| CN111522099B (en) | Full-vertical double-rod type optical element positioning and adjusting device | |
| US7883217B2 (en) | Lamp mount system for projector lamps with mount piece and clips | |
| CN214375782U (en) | Reflector adjusting mechanism for projection optical machine, projection optical machine and projector | |
| CN210688107U (en) | Sleeve assembly and lamp | |
| WO2006044096A2 (en) | Split optic support structure and optical system using split optic support structure | |
| CN210717162U (en) | Lamp body assembly capable of being matched with sleeve assembly and lamp | |
| CN110762434A (en) | Lamp body assembly capable of being matched with sleeve assembly and lamp | |
| US8107021B2 (en) | Liquid crystal projection apparatus utilizing image synthesizing unit with liquid crystal panel holders | |
| JPH1172844A (en) | Liquid crystal projector, projection type liquid crystal display device, lamp unit used therein, lamp constituting body and lamp, method for assembling lamp unit, jig for adjusting optical axis of lamp unit and connector device | |
| TWI454827B (en) | Fixed structure of the porjector lamp | |
| CN217082246U (en) | Lamp set | |
| CN211231154U (en) | Side alignment lock and display screen frame assembly | |
| CN213633151U (en) | Gas pool transition device and gas analysis optical system | |
| CN217356760U (en) | Lamp with replaceable optical part | |
| CN218003817U (en) | Optical lens | |
| CN213188402U (en) | Foot examination instrument lens column mounting structure | |
| CN111505785B (en) | Fixing base and projection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |