CN209946622U - Wavefront coding-based focusing-free projection objective and projector - Google Patents
Wavefront coding-based focusing-free projection objective and projector Download PDFInfo
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- CN209946622U CN209946622U CN201921064580.5U CN201921064580U CN209946622U CN 209946622 U CN209946622 U CN 209946622U CN 201921064580 U CN201921064580 U CN 201921064580U CN 209946622 U CN209946622 U CN 209946622U
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Abstract
The utility model discloses a exempt from focusing projection objective and projecting apparatus based on wave front coding belongs to projecting apparatus technical field. A focusing-free projection objective lens and a projector based on wavefront coding comprise a projection piece, a supporting plate and a connecting base, wherein the projection piece is connected to the supporting plate, the supporting plate is rotatably connected with the connecting base through a connecting rotating shaft, the supporting plate is internally and slidably connected with a rotating shaft piece, the rotating shaft piece is rotatably connected to the connecting base, a limiting block is fixedly connected to the rotating shaft piece, and a limiting groove matched with the limiting block is formed in the connecting base; the connecting base is fixedly connected with a first connecting plate; the utility model discloses can adjust the height of placing the projection piece on the desktop, can also adjust the angle between projection piece and the projection cloth, make the more complete projection of image on the projection piece on the projection cloth, the people of being convenient for use and operate.
Description
Technical Field
The utility model relates to a projecting apparatus technical field especially relates to a exempt from focusing projection objective and projecting apparatus based on wave front coding.
Background
The projector is an optical instrument which utilizes an optical element to amplify the outline of a workpiece and project the workpiece onto a video screen, and is a device which can project images or videos onto a curtain and can be connected with a computer, a VCD, a DVD, a BD, a game machine and a DV through different interfaces to play corresponding video signals.
When the existing projector is used, the focal length of the projector is required to be adjusted so as to enable imaging to be clearer.
Through search, the invention patent with patent application number 201510601510.9 and publication number CN105116518A, entitled focusing-free projection objective lens based on wavefront coding and projector, discloses a focusing-free projection objective lens based on wavefront coding and a projector, which comprises a coding plate and a projection objective lens group. Compared with the traditional projection objective, the focusing-free projection objective disclosed by the invention does not need to adjust the rear intercept or the focal length of a lens, does not need an additional electronic correction system, only adopts one wavefront coding plate, so that the structure is simpler, the imaging can be clear in a larger projection distance range, and the whole projection objective system has the advantages of simple structure, small and compact size, low manufacturing cost, high light efficiency, high uniformity and high contrast, is free of radiation, is green and environment-friendly, and is suitable for large-scale production.
The invention discloses a focusing-free projection objective lens based on wavefront coding and a projector, which can enable the projector to form images more clearly without adjusting focal distance, but in the using process, some projectors are connected to a ceiling through a support, and some projectors are placed on the desktop.
SUMMERY OF THE UTILITY MODEL
The objective of the present invention is to provide a focusing-free projection objective and projector based on wavefront coding, which solves the problems of the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a focusing-free projection objective lens and a projector based on wavefront coding comprise a projection piece, a supporting plate and a connecting base, wherein the projection piece is connected to the supporting plate, the supporting plate is rotatably connected with the connecting base through a connecting rotating shaft, the supporting plate is internally and slidably connected with a rotating shaft piece, the rotating shaft piece is rotatably connected to the connecting base, a limiting block is fixedly connected to the rotating shaft piece, and a limiting groove matched with the limiting block is formed in the connecting base;
the connecting base is fixedly connected with a first connecting plate, the first connecting plate is connected with a second connecting plate in a rotating mode, the first connecting plate is connected with the second connecting plate through a connecting shaft, a first connecting block and a second connecting block are fixedly connected onto the connecting shaft, the first connecting block is connected with the second connecting block through a lead screw, the lead screw is connected with the first connecting block through threads, and the lead screw is connected with the second connecting block in a rotating mode.
Preferably, the supporting plate is fixedly connected with a sliding block, and the rotating shaft part is provided with a sliding groove matched with the sliding block.
Preferably, the rotating shaft part is connected with the connecting rotating shaft through a connecting spring, and two ends of the connecting spring are fixedly connected with the rotating shaft part and the connecting rotating shaft respectively.
Preferably, the supporting plate is fixedly connected with a supporting ring, the connecting base is provided with an annular groove matched with the supporting ring, and the supporting ring is rotatably connected in the annular groove.
Preferably, one end of the rotating shaft piece, which is far away from the connecting spring, is fixedly connected with a handle.
Preferably, one end of the screw rod, which is far away from the first connecting block, is fixedly connected with a turntable.
Preferably, the projection member is fixedly connected with a projection leg, and the support plate is provided with a leg groove matched with the projection leg.
Preferably, the connection part of the projection piece and the support plate is provided with a non-slip mat, and the support plate is fixedly connected with the non-slip mat.
A projector adopts the non-focusing projection objective.
Compared with the prior art, the utility model provides a exempt from focusing projection objective and projecting apparatus based on wave front coding possesses following beneficial effect:
according to the focusing-free projection objective lens and the projector based on the wavefront coding, when a user uses the projection objective lens and needs to adjust the height of a projection piece, the projection support legs of the projection piece are inserted into the support leg grooves in the support plate, and the projection piece can be prevented from shaking when the height is adjusted;
the rotary table is rotated to drive the screw rod to rotate, the screw rod is in threaded connection with the first connecting block, the screw rod is in rotational connection with the second connecting block, the first connecting block and the second connecting block are respectively connected to the two connecting shafts, and therefore the distance between the two connecting shafts can be adjusted;
when the distance between the connecting shafts is changed, the angle between the first connecting plate and the second connecting plate is changed, so that the distance between the connecting base and the bottom plate is adjusted, and the height of the projection piece can be adjusted;
when the angle of the projection piece needs to be adjusted, the projection piece can be prevented from sliding and falling and damaging the projection piece by fixedly connecting the anti-slip mat on the supporting plate, and the supporting plate rotates on the connecting base through the connecting rotating shaft;
the rotating shaft part is conveniently pulled through the handle, so that the limiting block is separated from the limiting groove, the connecting spring extends, the rotating shaft part is rotated, the rotating shaft part drives the supporting plate to rotate through the sliding block and the sliding groove, the supporting plate drives the projection part to rotate through the projection supporting legs, and the angle between the projection part and the projection cloth can be adjusted;
after the adjustment is finished, the handle is loosened, the rotating shaft part is reset under the action of the connecting spring, and then the limiting block enters the limiting groove to clamp the supporting plate, so that the projection part is prevented from shaking;
the supporting ring on the supporting plate is connected with the annular groove on the base, so that the supporting plate can be stably supported.
The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can adjust the height of the projection piece of placing on the desktop, can also adjust the angle between projection piece and the projection cloth, make the more complete projection of image on the projection piece on the projection cloth, the people of being convenient for use and operate.
Drawings
Fig. 1 is one of the structural schematic diagrams of a wavefront coding-based focus-free projection objective and a projector according to the present invention;
fig. 2 is a schematic structural diagram of a wavefront coding-based focus-free projection objective and a base plate of a projector according to the present invention;
fig. 3 is one of the structural schematic diagrams of a wavefront coding-based focus-free projection objective and a projector according to the present invention;
fig. 4 is a schematic structural diagram of a position a in fig. 3 of a wavefront coding-based focus-free projection objective and projector according to the present invention;
fig. 5 is a schematic structural diagram of a connection base of a wavefront coding-based focus-free projection objective and a projector according to the present invention;
fig. 6 is a schematic structural diagram of a wavefront coding-based focus-free projection objective and a rotating shaft of a projector according to the present invention;
fig. 7 is a schematic diagram of a cross-sectional structure of a wavefront coding-based focus-free projection objective and a projector according to the present invention.
In the figure: 1. a projection; 101. a projection leg; 2. a support plate; 2001. a leg slot; 2002. a slider; 201. a support ring; 3. a connection base; 3001. an annular groove; 3002. a limiting groove; 301. connecting the rotating shaft; 3011. a connecting spring; 4. a shaft member; 4001. a limiting block; 401. a chute; 402. a handle; 5. a base plate; 501. a first connecting plate; 5011. a second connecting plate; 502. a connecting shaft; 503. a first connection block; 504. a screw rod; 505. a turntable; 5051. and a second connecting block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
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, and are only for convenience of description and simplicity of 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 therefore, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1-7, a focusing-free projection objective and a projector based on wavefront coding, comprising a projection member 1, a support plate 2 and a connection base 3, wherein the projection member 1 is connected to the support plate 2, the support plate 2 is rotationally connected with the connection base 3 through a connection rotating shaft 301, a rotating shaft member 4 is slidably connected in the support plate 2, the rotating shaft member 4 is rotationally connected to the connection base 3, a limit block 4001 is fixedly connected to the rotating shaft member 4, and a limit groove 3002 matched with the limit block 4001 is arranged on the connection base 3;
the connecting structure further comprises a bottom plate 5, a second connecting plate 5011 is connected to the bottom plate 5 in a rotating mode, a first connecting plate 501 is fixedly connected to the connecting base 3, the first connecting plate 501 is connected with the second connecting plate 5011 through a connecting shaft 502, a first connecting block 503 and a second connecting block 5051 are fixedly connected to the connecting shaft 502, the first connecting block 503 is connected with the second connecting block 5051 through a lead screw 504, the lead screw 504 is connected with the first connecting block 503 through threads, and the lead screw 504 is connected with the second connecting block 5051 in a rotating mode.
The supporting plate 2 is fixedly connected with a sliding block 2002, and the rotating shaft part 4 is provided with a sliding groove 401 matched with the sliding block 2002.
The rotating shaft piece 4 is connected with the connecting rotating shaft 301 through a connecting spring 3011, and two ends of the connecting spring 3011 are respectively fixedly connected with the rotating shaft piece 4 and the connecting rotating shaft 301.
The support plate 2 is fixedly connected with a support ring 201, the connecting base 3 is provided with an annular groove 3001 matched with the support ring 201, and the support ring 201 is rotatably connected in the annular groove 3001.
A handle 402 is fixedly connected to one end of the rotating shaft member 4 away from the connecting spring 3011.
A turntable 505 is fixedly connected to one end of the screw rod 504 far away from the first connecting block 503.
The projection member 1 is fixedly connected with a projection leg 101, and the support plate 2 is provided with a leg groove 2001 matched with the projection leg 101.
The connection part of the projection piece 1 and the support plate 2 is provided with an anti-slip pad, and the support plate 2 is fixedly connected with the anti-slip pad.
A projector employs a focus-free projection objective.
When a user uses the projector, and needs to adjust the height of the projector 1, the projection support legs 101 of the projector 1 are inserted into the leg grooves 2001 on the support plate 2, so that the projector 1 can be prevented from shaking when the height is adjusted;
the rotary table 505 is rotated to drive the screw rod 504 to rotate, the screw rod 504 is in threaded connection with the first connecting block 503, the screw rod 504 is in rotational connection with the second connecting block 5051, the first connecting block 503 and the second connecting block 5051 are respectively connected to the two connecting shafts 502, and the distance between the two connecting shafts 502 can be adjusted;
when the distance between the connecting shafts 502 is changed, the angle between the first connecting plate 501 and the second connecting plate 5011 is changed, so that the distance between the connecting base 3 and the bottom plate 5 is adjusted, and the height of the projection 1 can be adjusted;
when the angle of the projection 1 needs to be adjusted, the projection 1 can be prevented from sliding and falling and damaging the projection 1 by fixedly connecting the anti-slip mat on the support plate 2, and the support plate 2 rotates on the connecting base 3 through the connecting rotating shaft 301;
the rotating shaft piece 4 is conveniently pulled through the handle 402, so that the limiting block 4001 is separated from the limiting groove 3002, the connecting spring 3011 extends, the rotating shaft piece 4 is rotated, the rotating shaft piece 4 drives the supporting plate 2 to rotate through the sliding block 2002 and the sliding groove 401, the supporting plate 2 drives the projection piece 1 to rotate through the projection supporting leg 101, and further the angle between the projection piece 1 and the projection cloth can be adjusted;
after the adjustment is finished, the handle 402 is loosened, the rotating shaft member 4 is reset under the action of the connecting spring 3011, and then the limiting block 4001 enters the limiting groove 3002, the supporting plate 2 is blocked, and the projection member 1 is prevented from shaking;
the supporting ring 201 on the supporting plate 2 is connected with the annular groove 3001 on the base 3, so that the supporting plate 2 can be stably supported;
the device can adjust the height of the projection piece 1 placed on the desktop, and can also adjust the angle between the projection piece 1 and the projection cloth, so that the image on the projection piece 1 is more completely projected on the projection cloth, and the device is convenient for people to use and operate.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. A focusing-free projection objective based on wavefront coding comprises a projection piece (1), and is characterized by further comprising a support plate (2) and a connecting base (3), wherein the projection piece (1) is connected to the support plate (2), the support plate (2) is rotatably connected with the connecting base (3) through a connecting rotating shaft (301), a rotating shaft piece (4) is connected in the support plate (2) in a sliding manner, the rotating shaft piece (4) is rotatably connected to the connecting base (3), a limiting block (4001) is fixedly connected to the rotating shaft piece (4), and a limiting groove (3002) matched with the limiting block (4001) is formed in the connecting base (3);
the connecting device is characterized by further comprising a base plate (5), a second connecting plate (5011) is connected to the base plate (5) in a rotating mode, a first connecting plate (501) is fixedly connected to the connecting base (3), the first connecting plate (501) is connected with the second connecting plate (5011) through a connecting shaft (502), a first connecting block (503) and a second connecting block (5051) are fixedly connected to the connecting shaft (502), the first connecting block (503) is connected with the second connecting block (5051) through a screw rod (504), the screw rod (504) is connected with the first connecting block (503) through threads, and the screw rod (504) is connected with the second connecting block (5051) in a rotating mode.
2. The wavefront-coding-based focus-free projection objective of claim 1, wherein a slider (2002) is fixedly connected to the support plate (2), and a sliding groove (401) matched with the slider (2002) is formed in the rotating shaft member (4).
3. The wavefront coding-based focus-free projection objective of claim 2, wherein the rotating shaft member (4) is connected with the connecting rotating shaft (301) through a connecting spring (3011), and two ends of the connecting spring (3011) are respectively fixedly connected with the rotating shaft member (4) and the connecting rotating shaft (301).
4. The wavefront-coding-based focus-free projection objective of claim 1, wherein a support ring (201) is fixedly connected to the support plate (2), an annular groove (3001) matched with the support ring (201) is formed in the connecting base (3), and the support ring (201) is rotatably connected in the annular groove (3001).
5. The wavefront-coding-based focus-free projection objective of claim 3, wherein a handle (402) is fixedly connected to the end of the shaft member (4) remote from the connecting spring (3011).
6. The wavefront-coding-based focus-free projection objective of claim 1, characterized in that a turntable (505) is fixedly connected to an end of the screw rod (504) remote from the first connecting block (503).
7. The wavefront-coding-based focus-free projection objective of claim 1, wherein the projection element (1) has a projection leg (101) fixedly connected thereto, and the support plate (2) has a leg groove (2001) matching the projection leg (101).
8. The wavefront coding-based focus-free projection objective of claim 7, wherein the projection member (1) is connected to the support plate (2) by non-slip pads, and the support plate (2) is fixedly connected to the non-slip pads.
9. A projector, characterized in that a focus-free projection objective as claimed in any of claims 1 to 8 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921064580.5U CN209946622U (en) | 2019-07-09 | 2019-07-09 | Wavefront coding-based focusing-free projection objective and projector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921064580.5U CN209946622U (en) | 2019-07-09 | 2019-07-09 | Wavefront coding-based focusing-free projection objective and projector |
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| CN209946622U true CN209946622U (en) | 2020-01-14 |
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| CN201921064580.5U Active CN209946622U (en) | 2019-07-09 | 2019-07-09 | Wavefront coding-based focusing-free projection objective and projector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474183A (en) * | 2020-04-16 | 2020-07-31 | 中国航空无线电电子研究所 | Inspection tool assisting printed circuit board with structural part to perform automatic optical detection |
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2019
- 2019-07-09 CN CN201921064580.5U patent/CN209946622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474183A (en) * | 2020-04-16 | 2020-07-31 | 中国航空无线电电子研究所 | Inspection tool assisting printed circuit board with structural part to perform automatic optical detection |
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