CN111240135A - Projector lens displacement adjusting mechanism, adjusting method and projector - Google Patents
Projector lens displacement adjusting mechanism, adjusting method and projector Download PDFInfo
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- CN111240135A CN111240135A CN202010280404.6A CN202010280404A CN111240135A CN 111240135 A CN111240135 A CN 111240135A CN 202010280404 A CN202010280404 A CN 202010280404A CN 111240135 A CN111240135 A CN 111240135A
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- sliding module
- motor
- adjusting
- displacement
- lens
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- 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
- G03B21/142—Adjusting of projection optics
Abstract
The invention discloses a projector lens displacement adjusting mechanism, an adjusting method and a projector, comprising a displacement mechanism bracket; the first sliding module is provided with a first motor, a first flange nut and a first sliding module arranged in front of the displacement mechanism bracket; a second sliding module having a second motor, a second flange nut, and a second sliding module disposed above the first sliding module; and the lens mounting module is provided with a lens mounting bracket arranged in front of the second sliding module and a bracket adjusting seat around the lens mounting bracket. The invention has the beneficial effects that: the first sliding module and the second sliding module have the characteristics of simple structure, few parts and low cost.
Description
Technical Field
The invention relates to a projection device, in particular to a projector lens displacement adjusting mechanism, an adjusting method and a projector.
Background
At present, a projector lens displacement structure can generally realize adjustment in horizontal (left-right) and vertical (up-down) directions, and comprises a mounting bracket, a driving module, a sliding rod, a horizontal sliding module, a vertical sliding module, a lens mounting module and the like. The driving module generally comprises a stepping motor and a gear pair or a stepping motor and a turbine worm pair. In the existing design, the transmission of the staggered shaft is realized through a gear pair or a turbine worm pair, the structure is compact, but the number of components is large, the calculation is complex, the requirements on machining and assembling precision are high, and the situation that a displacement mechanism is blocked occasionally occurs in actual production. In addition, along with the extension of operating time, the wearing and tearing between gear pair/worm pair can aggravate, and the noise of product can grow, and stability can descend, influences the life of whole equipment.
Disclosure of Invention
The invention provides a novel projector displacement adjusting mechanism, an adjusting method and a projector, aiming at solving the technical problem of large component number and defect in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows: a lens displacement adjusting mechanism of a projector comprises,
a displacement mechanism support;
the first sliding module is provided with a first motor, a first flange nut and a first sliding module arranged in front of the displacement mechanism support, the first motor is fixed on the displacement mechanism support, a motor shaft of the first motor extends along a first direction, the motor shaft of the first motor and the first flange nut form a screw pair, and the first flange nut is fixedly connected with the first sliding module, so that the first motor can drive the first sliding module to displace along the first direction through the first flange nut;
the second sliding module is provided with a second motor, a second flange nut and a second sliding module arranged above the first sliding module, the second motor is fixed on the first sliding module, a motor shaft of the second motor extends along a second direction, the motor shaft of the second motor and the second flange nut form a screw pair, and the second flange nut is fixedly connected with the second sliding module, so that the second motor can drive the second sliding module to move along the second direction through the second flange nut, further, the first direction is a left-right direction, and the second direction is an up-down direction; and the number of the first and second groups,
the lens installation module is provided with a lens installation support arranged in the front of the second sliding module and a support adjusting seat arranged on the periphery of the lens installation support, an adjusting seat accommodating hole extending along the front-back direction is formed in the support adjusting seat, an adjusting screw, an adjusting nut and an adjusting spring are arranged in the adjusting seat accommodating hole, the adjusting screw penetrates through the sleeving seat accommodating hole and extends to the second sliding module, and the adjusting spring is arranged between the lens installation support and the adjusting nut and is in a compression state.
As a preferable scheme of the projector lens displacement adjusting mechanism, the first flange nut has a first axial thread part and a first radial flanging part, and a first fixing hole is formed on the first radial flanging part; the first sliding module is of a plate-shaped structure and is provided with a first side wall, a first through hole for accommodating the first axial thread portion and a first fixed hole corresponding to the first fixed hole are formed in the first side wall, and the first fixed hole are fixedly connected through a first connecting piece, so that the first flange nut is fixedly connected with the first sliding module.
As a preferable scheme of the projector lens displacement adjusting mechanism, the second flange nut has a second axial thread portion and a second radial flange portion, and a second fixing hole is formed on the second radial flange portion; the second sliding module is of a plate-shaped structure and is provided with a second side wall, a second through hole for accommodating the second axial thread part and a second fixed hole corresponding to the second fixed hole are formed in the second side wall, and the second fixed hole are fixedly connected through a second connecting piece so as to realize the fixed connection of the second flange nut and the second sliding module.
As a preferable scheme of the projector lens displacement adjusting mechanism, the first sliding module further has the first guide slide bar fixed on the displacement mechanism bracket, the first guide slide bar extends along the first direction, and the first guide slide bar is in sliding fit with the first sliding module; further, the number of the first guide slide bars is 2, and the first guide slide bars are respectively arranged on two opposite sides of the first sliding module along the second direction.
As a preferable scheme of the projector lens displacement adjusting mechanism, the second sliding module further has a second guide slide bar fixed to the first sliding module, the second guide slide bar extends along the second direction, and the second guide slide bar is in sliding fit with the second sliding module; further, the number of the second guide slide bars is 2, and the second guide slide bars are respectively arranged on two opposite sides of the second sliding module along the first direction.
As a preferable scheme of the projector lens displacement adjusting mechanism, the number of the bracket adjusting seats is 3, and the bracket adjusting seats are arranged at intervals of 120 degrees in a staggered manner.
As a preferable scheme of the projector lens displacement adjusting mechanism, the first motor and/or the second motor is a stepping motor.
The invention also provides a method for adjusting the displacement of the lens of the projector, which comprises the following steps,
step S1, providing the projector lens displacement adjusting mechanism;
and step S2, adjusting the lens mounting bracket to a designated pose, wherein the adjustment mode is displacement along the first direction, displacement along the second direction, displacement along the front-back direction and/or plane angle adjustment.
As a preferable aspect of the projector lens displacement adjustment method, the displacement in the front-rear direction and/or the plane angle adjustment: and the tightness of the adjusting screws in the accommodating holes of the adjusting seats is adjusted, and the lens mounting bracket is adjusted to an appointed pose under the action of the adjusting springs.
The invention also provides a projector comprising,
a projection lens; and the number of the first and second groups,
the projector lens displacement adjusting mechanism;
the projection lens is fixed on the lens mounting bracket.
Compared with the prior art, the invention has the beneficial effects that: 1. the first sliding module and the second sliding module have the characteristics of simple structure, few parts and low cost; 2. the difficulty of product selection is reduced, and only need according to the weight of camera lens, first slip module, second slip module, can choose for use rated thrust's first motor and second motor. 3. The screw pair formed by the first motor (the second motor) and the first flange nut (the second flange nut) has the advantages of high reliability and low noise.
In addition to the technical problems solved by the present invention, the technical features constituting the technical solutions, and the advantageous effects brought by the technical features of the technical solutions described above, other technical problems solved by the present invention, other technical features included in the technical solutions, and advantageous effects brought by the technical features will be described in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram according to an embodiment of the present invention.
Fig. 2 is an external view of an embodiment of the invention.
Fig. 3 is a schematic diagram illustrating a connection between a first motor (a second motor) and a first flange nut (a second flange nut) according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a bracket adjusting seat according to an embodiment of the invention.
Fig. 5 is a schematic structural diagram of a projector according to an embodiment of the invention.
Detailed Description
The invention will be described in further detail below with reference to specific embodiments and drawings. Here, the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1 to 2, a novel projector lens displacement adjusting mechanism is shown, which can be applied to laser projection or other optical related fields. The projector lens displacement adjusting mechanism mainly comprises a displacement mechanism support 1, a first sliding module 2, a second sliding module 3, a lens mounting module 4, a lens dustproof piece 5, a dustproof piece fixing piece 6 and other parts.
The displacement mechanism bracket 1 is a plate-shaped structure.
The first sliding module 2 has a first motor 21, a first flange nut 22, and a first sliding module 23 disposed in front of the displacement mechanism bracket 1. The first motor 21 is fixed on the displacement mechanism bracket 1 through a first L-shaped bracket. The first motor 21 may be a stepping motor. The motor shaft of the first motor 21 extends in a first direction. In this embodiment, the first direction is a left-right direction.
Referring to fig. 3, a motor shaft of the first motor 21 and the first flange nut 22 form a screw pair.
The first flange nut 22 is fixedly connected with the first sliding module 23. Specifically, the first flange nut 22 has a first axial threaded portion and a first radial flanging portion. The first radial flanging part is provided with a first fixing hole. The first sliding module 23 has a plate-like structure. The first slide module 23 has a first side wall 221. The first side wall is provided with a first through hole for accommodating the first axial thread part and a first fixed hole corresponding to the first fixed hole. The first fixed hole and the first fixed hole are fixedly connected by a first connecting piece, so as to realize the fixed connection between the first flange nut 22 and the first sliding module 23.
The first motor 21 can drive the first sliding module 23 to displace along the first direction through the first flange nut 22, that is, displacement of the lens mounting bracket 41 along the first direction is adjusted.
In order to ensure the stability of the first sliding module 23 during the displacement process, the first sliding module 2 further has the first guide slide 24 fixed to the displacement mechanism bracket 1. The first guide slide 24 extends in the first direction. The first guide slide bar 24 is in sliding engagement with the first slide module 23. Preferably, the number of the first guide slide bars 24 is 2, and the first guide slide bars are respectively arranged at two opposite sides of the first sliding module 23 along the second direction.
In order to detect the displacement of the first slide module 23, the first slide module 2 further includes a first-direction displacement detecting element 25 fixed to the displacement mechanism bracket 1.
The second sliding module 3 has a second motor 31, a second flange nut 32, and a second sliding module 33 disposed above the first sliding module 23. The second motor 31 is fixed to the first sliding module 23 through a second L-shaped bracket. The second motor 31 may be a stepping motor. The motor shaft of the second motor 31 extends in the second direction. In this embodiment, the second direction is an up-down direction.
Referring to fig. 3 again, a motor shaft of the second motor 31 and the second flange nut 32 form a screw pair.
The second flange nut 32 is fixedly connected with the second sliding module 33. Specifically, the second flange nut 32 has a second axial threaded portion and a second radial flange portion. And a second fixing hole is formed on the second radial flanging part. The second sliding module 33 has a plate-like structure. The second slide module 33 has a second side wall. The second sidewall 331 has a second through hole for receiving the second axial thread portion and a second fixed hole corresponding to the second fixed hole. The second fixed holes and the second fixed holes are fixedly connected by a second connecting piece, so as to realize the fixed connection between the second flange nut 32 and the second sliding module 33.
The second motor 31 can drive the second sliding module 33 to move along the second direction through the second flange nut 32, that is, the lens mounting bracket 41 is adjusted to move along the second direction.
In order to ensure the stability of the second sliding module 33 during the displacement, the second sliding module 3 further has the second guide slide 34 fixed to the first sliding module 23. The second guide slide 34 extends in the second direction. The second guide slide bar 34 is in sliding engagement with the second slide module 33. Preferably, the number of the second guide slide bars 34 is 2, and the second guide slide bars are respectively arranged at two opposite sides of the second sliding module 33 along the first direction.
In order to detect the displacement of the second slide module 33, the second slide module 3 further includes a second direction displacement detecting element 35 fixed to the first slide module 2 or the displacement mechanism holder 1.
The lens mount module 4 has a lens mount bracket 41 placed in front of the second slide module 33 and a bracket adjustment seat 42 around the lens mount bracket 41. In this embodiment, the lens mount 41 has an annular plate-like structure. The number of the bracket adjusting seats 42 is 3, and the seats are arranged at the periphery of the lens mounting bracket 41 at intervals of 120 degrees. A front-rear gap is formed between the lens mounting bracket 41 and the second sliding module 33.
Referring to fig. 4, the holder adjustment seat 42 is formed with an adjustment seat accommodating hole 420 extending in the front-rear direction. The adjustment seat receiving hole 420 has a positioning step 4201 therein. The positioning step 4201 extends radially inward from the inner circumferential surface of the adjustment seat receiving hole 420. The adjusting seat receiving hole 420 has therein an adjusting screw 44, an adjusting nut 43, and an adjusting spring 45. Wherein the adjusting screw 44 extends from front to back through the nest receiving hole 420 to the interior of the second slide module 33. The head of the adjusting screw 44 is in front of the positioning step 4201 and abuts against the positioning step 4201. The adjusting spring 45 is disposed between the lens mounting bracket 41 and the positioning step 4201 and the adjusting spring 45 is in a compressed state. The adjusting nut 43 is in threaded engagement with the adjusting seat receiving hole 420 to prevent the adjusting screw 44 from falling out. The adjustment screw 44 is tightened or loosened, and the lens mount 41 is adjusted to a predetermined posture by the force of the adjustment spring 45 on the positioning step 4201.
Referring to fig. 5, a projector is shown. The projector is composed of a projection lens 7 and a projector lens displacement adjusting mechanism. Wherein, the projection lens 7 is fixed on the lens mounting bracket 41. The first sliding module 2 and the second sliding module 3 can adjust the displacement of the projection lens 7 in the left-right and up-down directions. By adjusting the tightness of the adjustment screw 44, the projection lens 7 can be displaced in the front-rear direction and/or adjusted in the plane angle.
The foregoing merely represents embodiments of the invention, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The projector lens displacement adjusting mechanism is characterized by comprising,
a displacement mechanism support;
the first sliding module is provided with a first motor, a first flange nut and a first sliding module arranged in front of the displacement mechanism support, the first motor is fixed on the displacement mechanism support, a motor shaft of the first motor extends along a first direction, the motor shaft of the first motor and the first flange nut form a screw pair, and the first flange nut is fixedly connected with the first sliding module, so that the first motor can drive the first sliding module to displace along the first direction through the first flange nut;
the second sliding module is provided with a second motor, a second flange nut and a second sliding module arranged above the first sliding module, the second motor is fixed on the first sliding module, a motor shaft of the second motor extends along a second direction, the motor shaft of the second motor and the second flange nut form a screw pair, and the second flange nut is fixedly connected with the second sliding module, so that the second motor can drive the second sliding module to move along the second direction through the second flange nut, further, the first direction is a left-right direction, and the second direction is an up-down direction; and the number of the first and second groups,
the lens installation module is provided with a lens installation support arranged in the front of the second sliding module and a support adjusting seat arranged on the periphery of the lens installation support, an adjusting seat accommodating hole extending along the front-back direction is formed in the support adjusting seat, an adjusting screw, an adjusting nut and an adjusting spring are arranged in the adjusting seat accommodating hole, the adjusting screw penetrates through the sleeving seat accommodating hole and extends to the second sliding module, and the adjusting spring is arranged between the lens installation support and the adjusting nut and is in a compression state.
2. The projector lens displacement adjustment mechanism according to claim 1, wherein the first flange nut has a first axial threaded portion and a first radial flange portion, and a first fixing hole is formed in the first radial flange portion; the first sliding module is of a plate-shaped structure and is provided with a first side wall, a first through hole for accommodating the first axial thread portion and a first fixed hole corresponding to the first fixed hole are formed in the first side wall, and the first fixed hole are fixedly connected through a first connecting piece, so that the first flange nut is fixedly connected with the first sliding module.
3. The projector lens shift adjustment mechanism of claim 1, wherein the second flange nut has a second axial threaded portion and a second radial flange portion, the second radial flange portion having a second fixing hole formed therein; the second sliding module is of a plate-shaped structure and is provided with a second side wall, a second through hole for accommodating the second axial thread part and a second fixed hole corresponding to the second fixed hole are formed in the second side wall, and the second fixed hole are fixedly connected through a second connecting piece so as to realize the fixed connection of the second flange nut and the second sliding module.
4. The projector lens displacement adjustment mechanism of claim 1, wherein the first sliding module further has the first guide slide bar fixed to the displacement mechanism bracket, the first guide slide bar extending in the first direction, the first guide slide bar being in sliding engagement with the first sliding module; further, the number of the first guide slide bars is 2, and the first guide slide bars are respectively arranged on two opposite sides of the first sliding module along the second direction.
5. The projector lens shift adjustment mechanism of claim 1, wherein the second sliding module further has the second guide slide bar fixed to the first sliding module, the second guide slide bar extending in the second direction, the second guide slide bar being in sliding engagement with the second sliding module; further, the number of the second guide slide bars is 2, and the second guide slide bars are respectively arranged on two opposite sides of the second sliding module along the first direction.
6. The lens shift adjustment mechanism for projectors of claim 1, wherein the number of the stand adjustment bases is 3, and the stand adjustment bases are arranged at intervals of 120 ° apart from each other.
7. The projector lens shift adjustment mechanism of claim 1, wherein the first motor and/or the second motor is a stepper motor.
8. The method for adjusting the lens displacement of a projector is characterized by comprising the following steps,
a step S1 of providing the projector lens displacement adjustment mechanism of any one of claims 1 to 7;
and step S2, adjusting the lens mounting bracket to a designated pose, wherein the adjustment mode is displacement along the first direction, displacement along the second direction, displacement along the front-back direction and/or plane angle adjustment.
9. The projector lens displacement adjustment method according to claim 8, wherein the displacement in the front-rear direction and/or the plane angle adjustment: and the tightness of the adjusting screws in the accommodating holes of the adjusting seats is adjusted, and the lens mounting bracket is adjusted to an appointed pose under the action of the adjusting springs.
10. A projector is characterized by comprising,
a projection lens; and the number of the first and second groups,
the projector lens displacement adjustment mechanism of any one of claims 1 to 7;
the projection lens is fixed on the lens mounting bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010280404.6A CN111240135A (en) | 2020-04-10 | 2020-04-10 | Projector lens displacement adjusting mechanism, adjusting method and projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010280404.6A CN111240135A (en) | 2020-04-10 | 2020-04-10 | Projector lens displacement adjusting mechanism, adjusting method and projector |
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| Publication Number | Publication Date |
|---|---|
| CN111240135A true CN111240135A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010280404.6A Pending CN111240135A (en) | 2020-04-10 | 2020-04-10 | Projector lens displacement adjusting mechanism, adjusting method and projector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022017274A1 (en) * | 2020-07-21 | 2022-01-27 | 深圳光峰科技股份有限公司 | Driving mechanism and adjusting device for lens support, and projector |
| CN114562709A (en) * | 2022-03-14 | 2022-05-31 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Bottom lighting module adjusting device |
-
2020
- 2020-04-10 CN CN202010280404.6A patent/CN111240135A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022017274A1 (en) * | 2020-07-21 | 2022-01-27 | 深圳光峰科技股份有限公司 | Driving mechanism and adjusting device for lens support, and projector |
| CN114562709A (en) * | 2022-03-14 | 2022-05-31 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Bottom lighting module adjusting device |
| CN114562709B (en) * | 2022-03-14 | 2023-04-25 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Bottom lighting module adjusting device |
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