CN102540393A - Lens focusing device - Google Patents
Lens focusing device Download PDFInfo
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- CN102540393A CN102540393A CN2012100311533A CN201210031153A CN102540393A CN 102540393 A CN102540393 A CN 102540393A CN 2012100311533 A CN2012100311533 A CN 2012100311533A CN 201210031153 A CN201210031153 A CN 201210031153A CN 102540393 A CN102540393 A CN 102540393A
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- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000001788 irregular Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000009537 plain noodles Nutrition 0.000 description 1
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Abstract
The invention discloses a lens focusing device. The lens focusing device disclosed by the invention comprises a lens, an upper bracket, a lower bracket, and a knob component arranged between the upper bracket and the lower bracket. Through using the lens focusing device disclosed by the invention, various lenses of irregular sizes and/or lenses provided without reserved fixing holes can be focused, so the dependence of the lens focusing device on lens shapes can be effectively reduced.
Description
Technical Field
The invention relates to a focal length adjusting technology, in particular to a lens focusing device.
Background
When a commonly-used projection device is used, the focal length of a lens in the projection device is often required to be adjusted along with different use scenes, so that a projected picture is clearer. Therefore, a general projection apparatus is provided with a corresponding lens focusing device for adjusting the focal length of the lens.
Referring to fig. 1 and 2, in the prior art focusing apparatus, an additional focusing ring 102 is generally used. The lens 101 is circular, and fixing holes 103 are formed in the lens 101 and the focusing ring 102. The focusing ring 102 is sleeved on the lens 101 and fixed with the lens 101 by a fixing screw passing through the fixing hole 103. Therefore, when the focus ring 102 is rotated, the lens 101 can be driven to rotate, so that the focal length of the lens 101 can be changed, and the focusing operation on the lens 101 can be realized.
As can be seen from the above, the lens focusing device in the prior art is generally applicable to a lens with regular (usually circular) outer dimensions and a reserved fixing hole. However, in practical applications, the lens of some projectors is not regularly circular in external dimensions, and no fixing hole is reserved on the lens. For example, to save space, a wall-mounted projector will typically be used and hung upright on a wall. Due to the design reason, the external dimension of the lens of the wall-mounted projector is not regular round, a fixed hole is not reserved on the lens, and only a focusing knob is arranged on the side surface of the lens. Therefore, the lens focusing apparatus of the related art is difficult to be used for focusing the lens of the wall-mounted projector.
As can be seen from the foregoing, there are some problems associated with the lens focusing apparatus in the prior art, and therefore, there is a need for a better lens focusing apparatus, which can perform focusing operations on lenses with various irregular sizes and/or without reserved fixing holes.
Disclosure of Invention
According to the present invention, there is provided a lens focusing apparatus, whereby focusing operations can be performed for lenses having various irregular sizes and/or no fixing holes reserved.
According to the present invention, there is provided a lens focusing apparatus comprising: the rotary lens comprises a lens, an upper bracket, a lower bracket and a knob assembly arranged between the upper bracket and the lower bracket; the side surface of the lens is provided with a focusing knob; the upper bracket comprises a first arc-shaped plate, and a first through hole is formed in the middle of the first arc-shaped plate; a plurality of first screw columns are arranged on two sides of the lower surface of the first arc-shaped plate; the lower bracket comprises a second arc-shaped plate and fixing parts arranged at two ends of the second arc-shaped plate; a second through hole is formed in the middle of the second arc-shaped plate; a plurality of first screw holes for first screws to penetrate through the lower support and be connected with the first screw columns of the upper support are formed in two sides of the second arc-shaped plate; a plurality of second screw holes for a second screw to penetrate through the lower bracket and fix the lower bracket are formed in the fixing part; the knob assembly comprises a third arc-shaped plate, a protrusion arranged on the upper surface of the third arc-shaped plate and a downward hanging part arranged at one end of the third arc-shaped plate; the protrusion penetrates through the first through hole of the upper bracket and can move along the extension direction of the first through hole; the hanging part passes through the second through hole of the lower bracket and can move along the extending direction of the second through hole; and the hanging part is provided with an adjusting hole for the focusing knob to pass through.
Wherein the knob assembly comprises: a knob and a knob arm; wherein the knob comprises a third arc-shaped plate and a protrusion arranged on the upper surface of the third arc-shaped plate; one end of the lower surface of the third arc-shaped plate is provided with a plurality of second screw columns; the knob arm comprises a horizontal part and a drooping part arranged at one end of the horizontal part; the horizontal part is provided with a plurality of fixing holes for third screws to penetrate through the horizontal part and be connected with second screw columns of the knob; the lower part of the hanging part is provided with an adjusting hole for the focusing knob to pass through.
Wherein the drooping portion of the knob arm includes: a vertical part connected with one end of the horizontal part and perpendicular to the horizontal part, and an arc part disposed at the other end of the vertical part; and the lower part of the arc-shaped part is provided with an adjusting hole for the focusing knob to pass through.
A positioning column is arranged beside the second screw column of the knob; and the horizontal part of the knob arm is provided with a positioning hole corresponding to the positioning column.
Wherein, the both sides of knob lower surface are provided with many first slip muscle.
Wherein, the surface of first slip muscle is the hi-lite face.
Wherein, the upper surface of knob is the high plain noodles.
And reinforcing ribs perpendicular to the first arc-shaped plate are respectively arranged on two sides of the first through hole on the lower surface of the upper support.
And a plurality of second sliding ribs extending along the extension direction of the first through hole are further arranged at two ends of the first through hole on the lower surface of the upper support.
Wherein, the surface of second slip muscle is the hi-lite face.
Wherein, the upper surface of lower carriage is the hi-lite face.
Wherein, the both sides of the first arc of upper bracket are provided with the lateral wall of the first arc of perpendicular to respectively.
Wherein, the fixed part of lower carriage includes: the first fixing part is arranged at one end of the second arc-shaped plate, and the second fixing part and the third fixing part are arranged at the other end of the second arc-shaped plate; the first fixing part is provided with a plurality of screw holes for a first fixing screw to pass through and fix the first fixing part on the front shell of the projector; the second fixing part is provided with at least one screw hole for a second fixing screw to pass through and fix the second fixing part on the projector radiator; the third fixing part is provided with at least one screw hole for a third fixing screw to pass through and fix the third fixing part on the lens base.
According to the technical scheme, the lens focusing device mainly comprises a lens, an upper support, a lower support and a knob assembly. The lens focusing device comprises an upper bracket, a knob assembly, a lower bracket and a lens focusing device, wherein the upper bracket, the knob assembly and the lower bracket are matched with each other, so that the lens focusing device can perform focusing operation on lenses with various irregular sizes and/or without reserved fixing holes, and the dependence of the lens focusing device on the shape of the lens can be effectively reduced. Furthermore, the lens focusing device can effectively reduce the dependence on the position of a focusing knob on the lens, and has the characteristics of simple structure and convenient installation, thereby having good assembly manufacturability; meanwhile, the production cost of the lens focusing device is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is to be understood that the drawings in the following description are merely exemplary of the invention and that other embodiments and drawings may be devised by those skilled in the art based on the exemplary embodiments shown in the drawings.
FIG. 1 is a schematic diagram of a prior art focusing apparatus prior to assembly;
FIG. 2 is a schematic diagram of an assembled focusing apparatus of the prior art;
FIG. 3 is a schematic perspective view of a lens focusing apparatus according to an embodiment of the present invention before assembly;
FIG. 4 is a schematic perspective view of an assembled lens focusing apparatus according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a focusing process of a lens focusing apparatus according to an embodiment of the present invention;
FIG. 6 is a perspective view of the knob assembly of the present invention prior to assembly;
FIG. 7 is a perspective view of the assembled knob assembly in accordance with an embodiment of the present invention;
FIG. 8 is a schematic perspective view of a lens focusing apparatus according to an embodiment of the present invention;
FIG. 9 is a schematic front perspective view of a knob in an embodiment of the present invention;
FIG. 10 is a schematic bottom perspective view of a knob according to an embodiment of the present invention;
FIG. 11 is a schematic bottom perspective view of an upper rack in an embodiment of the present invention;
FIG. 12 is a schematic diagram illustrating the upper bracket limiting the knob according to an embodiment of the present invention;
fig. 13 is a schematic perspective view of a lower bracket according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 3 to 13, the lens focusing apparatus in the present embodiment includes: the camera lens comprises a lens 1, an upper bracket 2, a lower bracket 3 and a knob assembly 4 arranged between the upper bracket 2 and the lower bracket 3; wherein,
a focusing knob 11 is arranged on the side surface of the lens 1;
the upper bracket 2 comprises a first arc-shaped plate 21, and a first through hole 22 is formed in the middle of the first arc-shaped plate 21; a plurality of first screw posts 23 (e.g., 4 first screw posts as shown in fig. 3) are provided on both sides of the lower surface of the first arc plate 21;
the lower bracket 3 comprises a second arc-shaped plate 31 and fixing parts 33 arranged at two ends of the second arc-shaped plate 31; a second through hole 32 is formed in the middle of the second arc-shaped plate 31; a plurality of first screw holes 35 (for example, 4 first screw holes are shown in fig. 3) are formed on two sides of the second arc-shaped plate 31, and the first screws 34 penetrate through the lower bracket 3 and are connected with the first screw columns 23 of the upper bracket 2; the fixing portion 33 is formed with a plurality of second screw holes 36 through which second screws 37 penetrate the lower frame 3 to fix the lower frame 3.
The knob assembly 4 includes a third arc-shaped plate 41, a protrusion 42 provided on an upper surface of the third arc-shaped plate 41, and a drooping portion 43 provided at one end of the third arc-shaped plate 41; the projection 42 passes through the first through hole 22 of the upper bracket 2 and is movable in the extending direction of the first through hole 22; the hanging part 43 passes through the second through hole 32 of the lower bracket 3 and can move along the extending direction of the second through hole 32; the hanging portion 43 is provided with an adjusting hole 44 through which the focus adjustment knob 11 passes.
According to the structure of the lens focusing device, the whole lens focusing device can be fixed on a device (for example, a projector) where the lens 1 is positioned by a second screw 37 through a second screw hole 36 on the lower bracket 3; the upper bracket 2 and the lower bracket 3 are connected into a rotary bracket through a first screw 34; the knob assembly 4 is disposed between the upper bracket 2 and the lower bracket 3 and is movable between the upper bracket 2 and the lower bracket 3 in a clockwise direction or a counterclockwise direction. Therefore, when the protrusion 42 of the knob assembly 4 is shifted and moves along the extending direction of the first through hole 22, the entire knob assembly 4 will also move, and thus the focusing knob 11 on the lens 1 will be driven to move, so that the lens 1 can rotate in the clockwise direction or the counterclockwise direction, thereby changing the focal length of the lens 1 and realizing the focusing operation on the lens 1.
Since the above-described lens focusing device does not have a special requirement for the outer dimension of the lens 1, and does not require that a fixing hole be reserved in the lens 1, by using the above-described lens focusing device, it is possible to perform focusing operations on lenses having various irregular dimensions or lenses for which a fixing hole is not reserved, and thus it is possible to effectively reduce the dependency of the lens focusing device on the lens shape. In addition, in the above-described lens focusing apparatus, the specific shape of the knob assembly 4 may be designed in advance according to the size of the installation space and/or the position of the focus knob on the lens, so that the dependency on the position of the focus knob on the lens can be effectively reduced; moreover, all the components in the lens focusing device are fixed by screws, so that the lens focusing device is convenient to assemble and disassemble and has good assembly manufacturability; in addition, the structure of each component in the lens focusing device is simple, and the components can be made of common materials, so that the production cost can be effectively reduced.
Referring to fig. 6 to 10 in combination with fig. 3 to 5, in a preferred embodiment of the present invention, the knob assembly 4 may further include: a knob 401 and a knob arm 402. Wherein:
the knob 401 includes a third arc plate 41 and a protrusion 42 provided on an upper surface of the third arc plate 41; one end of the lower surface of the third arc-shaped plate 41 is provided with a plurality of second screw posts 45 (for example, 2 second screw posts are shown in fig. 6);
the knob arm 402 includes a horizontal portion 46 and a drooping portion 43 provided at one end of the horizontal portion 46; the horizontal portion 46 is opened with a plurality of fixing holes 48 (for example, 2 fixing holes are shown in fig. 6) through which third screws 47 penetrate the horizontal portion 46 and are connected to the second screw posts 45 of the knob 401; the lower part of the hanging part 43 is provided with an adjusting hole 44 for the focusing knob 11 to pass through.
As can be understood from the above-mentioned structure of the rotary assembly, the knob arm 402 can be fixed to the knob 401 by the third screw 47 passing through the fixing hole 48 and connected to the second screw post 45 of the knob 401, so that the firmness of the entire knob assembly 4 during the moving process can be ensured.
Preferably, in the embodiment of the present invention, the hanging portion 43 of the knob arm 402 further comprises: a vertical portion 431 connected to one end of the horizontal portion 46 and perpendicular to the horizontal portion 46, and an arc portion 432 provided at the other end of the vertical portion 431. Wherein, the lower part of the arc part 432 is provided with an adjusting hole 44 for passing the focusing knob 11. In addition, in the embodiment of the present invention, the length and the radian of the arc portion 432 may be previously set according to the installation space and/or the position of the focus knob 11 on the lens, so that it can be applied to various lenses having irregular outer dimensions.
Preferably, in the embodiment of the present invention, a positioning post 451 is further disposed beside the second screw post 45 of the knob 401, and a positioning hole 452 corresponding to the positioning post 451 is disposed on the horizontal portion 46 of the knob arm 402. When the knob 401 and the knob arm 402 are assembled into the knob assembly 4, the positioning hole 451 of the knob 401 is inserted into the positioning hole 452 of the knob arm 402, so that the knob 401 and the knob arm 402 can be positioned with each other during the assembly process, and the knob 401 and the knob arm 402 can be better fixed.
Preferably, in the embodiment of the present invention, the two sides of the lower surface of the knob 401 are further provided with a plurality of first sliding ribs 410, so that the lower surface of the knob 401 can be prevented from directly contacting with the upper surface of the lower bracket 3, the stressed area of the knob assembly 4 during the moving process is reduced, the friction between the knob assembly 4 and the lower bracket 3 during the moving process is reduced, and the movement of the knob assembly 4 is more labor-saving and smoother. Further, the surface of the first sliding rib 410 may also be a high-gloss surface, so that the friction between the knob assembly 4 and the lower bracket 3 during the movement process may be further reduced, and the feel of the knob assembly 4 during the movement process may be improved. The surface gloss of the first sliding rib 410 is realized by an injection mold, and the surface of the plastic part after injection molding by the gloss mold is glossy.
In addition, preferably, the upper surface of the knob 401 may also be a high-gloss surface, so that the friction between the knob assembly 4 and the upper bracket 2 during the movement process can be further reduced, and the hand feeling of the knob assembly 4 during the movement process can be improved.
Referring to fig. 11 and 12 in conjunction with fig. 3 to 5 and 8, in the preferred embodiment of the present invention, reinforcing ribs 210 perpendicular to the first arc-shaped plate 21 are further respectively disposed on both sides of the first through hole 22 on the lower surface of the upper bracket 2. The reinforcing rib 210 can effectively prevent the upper bracket 2 from warping and deforming; meanwhile, the reinforcing ribs 210 can also limit the knob 401.
Preferably, two ends of the first through hole 22 on the lower surface of the upper bracket 2 are further provided with a plurality of (for example, 2 in fig. 11) second sliding ribs 211 extending along the extending direction of the first through hole 22, so that the lower surface of the upper bracket 2 can be prevented from directly contacting with the upper surface of the knob 401, the stressed area of the knob assembly 4 during the moving process is reduced, the friction force between the knob assembly 4 and the upper bracket 2 during the moving process is reduced, and the movement of the knob assembly 4 is more labor-saving and smooth. Further, the surface of the second sliding rib 211 of the upper bracket 2 may also be a high-gloss surface, so that the friction between the knob assembly 4 and the upper bracket 2 during the movement process may be further reduced, and the hand feeling of the knob assembly 4 during the movement process may be improved.
Preferably, the two sides of the first arc-shaped plate 21 of the upper bracket 2 are also respectively provided with a side wall 24 perpendicular to the first arc-shaped plate 21 for shielding the knob assembly 4, so that the lens focusing device has a better appearance.
Referring to fig. 13 in combination with fig. 3 to 5 and 8, in the preferred embodiment of the present invention, the fixing portion 33 of the lower bracket 3 comprises: a first fixing portion 331 provided at one end of the second arc-shaped plate 31, and a second fixing portion 333 and a third fixing portion 335 provided at the other end of the second arc-shaped plate 31.
The first fixing portion 331 is provided with a plurality of screw holes 332 through which first fixing screws pass and which fix the first fixing portion 331 on the front shell of the projector;
the second fixing portion 333 is provided with at least one screw hole 334 through which a second fixing screw passes and which fixes the second fixing portion 333 to the projector heat sink;
the third fixing portion 335 is provided with at least one screw hole 336 through which a third fixing screw passes and fixes the third fixing portion 335 to the lens mount.
Preferably, in a preferred embodiment of the present invention, the upper surface of the lower bracket 3 may also be a high-gloss surface, so as to further reduce the friction between the knob assembly 4 and the upper bracket 2 during the movement process, and improve the feel of the knob assembly 4 during the movement process.
Referring to fig. 3 to 13, the assembly process of the lens focusing apparatus described in the present embodiment is as follows:
first, the knob assembly 4 is placed over the lower bracket 3 such that the hanging-down portion 43 of the knob assembly 4 passes through the second through-hole 32 of the lower bracket 3; subsequently, the upper bracket 2 is placed on the knob assembly 4 such that the protrusion 42 of the knob assembly 4 passes through the first through hole 22 of the upper bracket 2; next, the first screw 34 is inserted through the first screw hole 35 of the lower bracket 3 and coupled with the first screw post 23 of the upper bracket 2, thereby fixing the upper bracket 2 and the lower bracket 3 together. Finally, the lower bracket 3 may be fixed to the projector using a fixing screw, and the focus knob 11 of the lens 1 is passed through the adjustment hole 44 of the hanging-down portion 43.
In addition, when the knob assembly 4 includes the knob 401 and the knob arm 402, the knob 401 and the knob arm 402 need to be assembled into the knob assembly 4, and the third screw 47 may pass through the fixing hole 48 of the knob arm 402 and be connected to the second screw post 45 of the knob 401, so as to fix the knob arm 402 on the knob 401, thereby forming the knob assembly 4. In addition, when the knob 401 is further provided with the positioning post 451 and the horizontal portion 46 of the knob arm 402 is further provided with the positioning hole 452, the positioning post 451 of the knob 401 needs to be inserted into the positioning hole 452 of the knob arm 402 when the knob assembly 4 is assembled.
After the above assembling process is completed, the protrusion 42 of the knob assembly 4 can be shifted to move along the first through hole 22 in a clockwise direction or an anticlockwise direction, so as to drive the focusing knob 11 on the lens 1 to move in the clockwise direction or the anticlockwise direction, so that the lens 1 can rotate in the clockwise direction or the anticlockwise direction, thereby changing the focal length of the lens 1 and realizing the focusing operation on the lens 1.
In summary, in the lens focusing device provided by the invention, the lens can be rotated clockwise or counterclockwise through the cooperation between the upper bracket, the knob assembly and the lower bracket, so that the focal length of the lens can be changed, and the focusing operation of the lens is realized. Therefore, by using the lens focusing device, focusing operations can be performed on lenses with various irregular sizes and/or without reserved fixing holes, so that the dependence of the lens focusing device on the shape of the lens can be effectively reduced. In addition, since the specific shape of the knob assembly in the lens focusing apparatus can be designed in advance according to the size of the installation space and/or the position of the focusing knob 11 on the lens, the dependence on the position of the focusing knob 11 on the lens can be effectively reduced; moreover, each component in the lens focusing device is very convenient to assemble and disassemble, so that the lens focusing device has good assembly manufacturability; in addition, the structure of each component in the lens focusing device is simple, and the components can be made of common materials, so that the production cost can be effectively reduced.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A lens focusing apparatus, comprising: the rotary lens comprises a lens, an upper bracket, a lower bracket and a knob assembly arranged between the upper bracket and the lower bracket; wherein,
a focusing knob is arranged on the side surface of the lens;
the upper bracket comprises a first arc-shaped plate, and a first through hole is formed in the middle of the first arc-shaped plate; a plurality of first screw columns are arranged on two sides of the lower surface of the first arc-shaped plate;
the lower bracket comprises a second arc-shaped plate and fixing parts arranged at two ends of the second arc-shaped plate; a second through hole is formed in the middle of the second arc-shaped plate; a plurality of first screw holes for first screws to penetrate through the lower support and be connected with the first screw columns of the upper support are formed in two sides of the second arc-shaped plate; a plurality of second screw holes for a second screw to penetrate through the lower bracket and fix the lower bracket are formed in the fixing part;
the knob assembly comprises a third arc-shaped plate, a protrusion arranged on the upper surface of the third arc-shaped plate and a downward hanging part arranged at one end of the third arc-shaped plate; the protrusion penetrates through the first through hole of the upper bracket and can move along the extension direction of the first through hole; the hanging part passes through the second through hole of the lower bracket and can move along the extending direction of the second through hole; and the hanging part is provided with an adjusting hole for the focusing knob to pass through.
2. The lens focusing apparatus of claim 1, wherein the knob assembly comprises: a knob and a knob arm; wherein,
the knob comprises a third arc-shaped plate and a protrusion arranged on the upper surface of the third arc-shaped plate; one end of the lower surface of the third arc-shaped plate is provided with a plurality of second screw columns;
the knob arm comprises a horizontal part and a drooping part arranged at one end of the horizontal part; the horizontal part is provided with a plurality of fixing holes for third screws to penetrate through the horizontal part and be connected with second screw columns of the knob; the lower part of the hanging part is provided with an adjusting hole for the focusing knob to pass through.
3. The lens focusing apparatus of claim 2, wherein the depending portion of the knob arm comprises:
a vertical part connected with one end of the horizontal part and perpendicular to the horizontal part, and an arc part disposed at the other end of the vertical part;
and the lower part of the arc-shaped part is provided with an adjusting hole for the focusing knob to pass through.
4. A lens focusing apparatus according to claim 2, wherein:
a positioning column is arranged beside the second screw column of the knob; and the horizontal part of the knob arm is provided with a positioning hole corresponding to the positioning column.
5. A lens focusing apparatus according to claim 2, wherein:
a plurality of first sliding ribs are arranged on two sides of the lower surface of the knob.
6. A lens focusing apparatus according to claim 5, wherein:
the surface of the first sliding rib is a high-gloss surface;
the upper surface of the knob is a high-gloss surface.
7. A lens focusing apparatus according to claim 1, wherein:
and reinforcing ribs perpendicular to the first arc-shaped plate are respectively arranged on two sides of the first through hole on the lower surface of the upper support.
8. A lens focusing apparatus according to claim 1, wherein:
a plurality of second sliding ribs extending along the extension direction of the first through hole are further arranged at two ends of the first through hole on the lower surface of the upper support;
the surface of the second sliding rib is a high-gloss surface;
the upper surface of the lower support is a high-gloss surface.
9. A lens focusing apparatus according to claim 1, wherein:
and the two sides of the first arc-shaped plate of the upper support are respectively provided with a side wall vertical to the first arc-shaped plate.
10. The lens focusing apparatus of claim 1, wherein the fixing portion of the lower holder comprises: the first fixing part is arranged at one end of the second arc-shaped plate, and the second fixing part and the third fixing part are arranged at the other end of the second arc-shaped plate; wherein,
the first fixing part is provided with a plurality of screw holes for a first fixing screw to pass through and fix the first fixing part on the front shell of the projector;
the second fixing part is provided with at least one screw hole for a second fixing screw to pass through and fix the second fixing part on the projector radiator;
the third fixing part is provided with at least one screw hole for a third fixing screw to pass through and fix the third fixing part on the lens base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210031153.3A CN102540393B (en) | 2012-02-13 | 2012-02-13 | Lens focusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210031153.3A CN102540393B (en) | 2012-02-13 | 2012-02-13 | Lens focusing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102540393A true CN102540393A (en) | 2012-07-04 |
| CN102540393B CN102540393B (en) | 2014-05-07 |
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ID=46347682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210031153.3A Active CN102540393B (en) | 2012-02-13 | 2012-02-13 | Lens focusing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102540393B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199897A (en) * | 2016-07-07 | 2016-12-07 | 苏州佳世达光电有限公司 | Camera lens fixes module and projection arrangement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5715101A (en) * | 1995-04-26 | 1998-02-03 | Asahi Kogaku Kogyo K.K. | Focusing apparatus for a surveying instrument |
| CN101174019A (en) * | 2006-11-01 | 2008-05-07 | 富准精密工业(深圳)有限公司 | Two-stage type focusing lens structure |
| CN101393316A (en) * | 2007-09-20 | 2009-03-25 | 华宏新技股份有限公司 | Lens actuating device |
-
2012
- 2012-02-13 CN CN201210031153.3A patent/CN102540393B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5715101A (en) * | 1995-04-26 | 1998-02-03 | Asahi Kogaku Kogyo K.K. | Focusing apparatus for a surveying instrument |
| CN101174019A (en) * | 2006-11-01 | 2008-05-07 | 富准精密工业(深圳)有限公司 | Two-stage type focusing lens structure |
| CN101393316A (en) * | 2007-09-20 | 2009-03-25 | 华宏新技股份有限公司 | Lens actuating device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199897A (en) * | 2016-07-07 | 2016-12-07 | 苏州佳世达光电有限公司 | Camera lens fixes module and projection arrangement |
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| Publication number | Publication date |
|---|---|
| CN102540393B (en) | 2014-05-07 |
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