CN204758901U - Lens fixation device - Google Patents
Lens fixation device Download PDFInfo
- Publication number
- CN204758901U CN204758901U CN201520401231.3U CN201520401231U CN204758901U CN 204758901 U CN204758901 U CN 204758901U CN 201520401231 U CN201520401231 U CN 201520401231U CN 204758901 U CN204758901 U CN 204758901U
- Authority
- CN
- China
- Prior art keywords
- lens
- drum
- lens drum
- madial wall
- pieces
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003292 glue Substances 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 9
- 239000000565 sealant Substances 0.000 claims description 7
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000001035 drying Methods 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Landscapes
- Lens Barrels (AREA)
Abstract
The utility model discloses a lens fixation device, including the lens drum, the lens drum is opened along the axis direction has the through -hole, and two piece at least lens bond respectively and fix the inside both ends of lens drum, the inside wall of two piece at least lens and lens drum constitutes at least one cavity, and the inside wall of the at least one end of lens drum is provided with the intercommunication at least one cavity and at least one external bleeder vent. Owing to set up the bleeder vent of the external atmospheric pressure of intercommunication on the inside wall of lens drum, in assembly second piece lens, the atmospheric pressure and the external atmospheric pressure of the cavity that comprises the inside wall of two lens and lens drum communicate with each other, have guaranteed second piece lens and installs on the lens drum firmly reliably, can not follow the lens drum and drop. In addition, because sealed glue has been expired to the annulus interior point that the inside wall of last lateral wall and lens drum at lens formed, make moisture and the inside of the impossible entering lens drum of impurity in the air to guaranteed that lens are in dry, clear state always.
Description
Technical field
The utility model belongs to optomechanical arts, refers more particularly to a kind of lens fixing device.
Background technology
Be that old lens 1 are assembled to the front view after on lens drum 2 with reference to figure 1, Fig. 1, in this figure, the structure of lens drum 2 does not make improvements.With reference to figure 2, Fig. 3 and Fig. 4, utilize do not do the lens drum 2 improved assemble two pieces of lens 1 time, the protrusion platform 23a of first lens drum 2 one end in figure 3 and madial wall 21 put UV glue, then be bonded on the protrusion platform 23a of lens drum 2 by the bottom 11 of wherein one piece of lens 1 as shown in Figure 4, the lateral wall 12 of lens 1 is bonded on the madial wall of lens drum 2; Then with the solidification of UV light irradiation, first piece of lens 1 being mounted with at lens drum 2 is finally completed.Then filling second piece of lens 1 at the other end of lens drum 2 by the method identical with filling first piece of lens 1, also solidifying with UV light irradiation second piece of lens 1 simultaneously.When assembling second piece of lens 1, old lens drum 2 structure can produce following 3 aspect defects: 1, with reference to figure 2, the madial wall of two pieces of lens 1 and lens drum 1 forms cavity 3, when irradiating solidification to second piece of lens 1, the atmospheric pressure produced in cavity 3 is greater than room air pressure, make second piece of lens 1 fixing not firm on lens drum 2, easily come off.If second piece of lens 1 mode that pressure Jing Quan adds O type circle (all not shown) is fixed by 2, both increase the Distance geometry angle tolerance between two pieces of lens 1, turn increase the difficulty of cost and assembling, inspection.3, because UV glue is liquid, can slowly volatilize, when irradiating UV lamp, due to ultraviolet heating, be coated with the reverse side that the UV glue being plated in the madial wall of lens drum 2 evaporates into two pieces of lens 1, light path propagation efficiency in two pieces of lens 1 reduced greatly, and reduces the aesthetic property of product appearance; Even so, even if UV glue does not volatilize when irradiating UV lamp, but As time goes on, UV glue can evaporate into the reverse side of lens equally, reduces the aesthetic property of the outward appearance of product.If but perforate on the sidewall of lens drum 2 between two pieces of lens 1, then can enter again the dust that cannot clean in cavity 3.It should be noted is that, here the reverse side of said two pieces of lens, to refer in Fig. 2 two pieces of lens 2 this one side towards cavity 3.
Utility model content
The utility model provides a kind of improvement rear lens stationary installation, and its fundamental purpose is that solve lens fixes insecure on lens drum, holds caducous problem.
The technical solution of the utility model is such:
A kind of lens fixing device, comprise: lens drum, described lens drum has through hole in the axial direction, at least two pieces of lens are adhesively fixed on the two ends of described lens drum inside respectively, the madial wall of described at least two pieces of lens and described lens drum forms at least one cavity, and the madial wall of at least one end of described lens drum is provided with and is communicated with at least one cavity described and at least one extraneous bleeder vent.
Further: described lens are two pieces, described cavity is one; The two ends madial wall of described lens drum is provided with some described bleeder vents.
Further: the madial wall of described lens drum is provided with to projecting inward annular sidewall, described annular sidewall and described madial wall form two ring-shaped platforms; Described two ring-shaped platforms are respectively used to place described two pieces of lens.
Further: on the madial wall at the annular sidewall two ends of described lens drum, be also respectively arranged with one to projecting inward annular boss; The internal diameter of described annular boss is greater than the internal diameter of described annular sidewall; The lateral wall of described two pieces of lens abuts against on the madial wall of described annular boss.
Further: the lens drum madial wall between described annular boss and described annular sidewall is also respectively arranged with two annular relief grooves.
Further: described bleeder vent extends to bottom described relief groove along the madial wall of described lens drum inwards, then extends radially inwardly to described annular sidewall along lens drum.
Further: the fluid sealant being filled with semi-fluid condition in the annulus that the madial wall of described lens drum and the lateral wall of described lens are formed; Described annulus is positioned at the outside of described annular boss.
Further: protrusion platform and described two annular boss of described annular sidewall are all coated with UV glue; Described two pieces of lens are connected on described lens drum respectively by UV is gluing.
Useful technique effect of the present utility model: owing to offering the bleeder vent being communicated with external atmosphere pressure on the madial wall of lens drum, when assembling second piece of lens, atmospheric pressure and the external atmosphere pressure of the cavity be made up of the madial wall of two pieces of lens and lens drum communicate, ensure that second piece of lens is solid and reliable on lens drum, can not split away off from lens drum.In addition, because point in the annulus that the madial wall of the last lateral wall at lens and lens drum is formed has expired fluid sealant, made the moisture in air and impurity can not enter the inside of lens drum, thus ensure that lens are in drying, clean state always.
Accompanying drawing explanation
Fig. 1 is that lens 1 are assembled to the front view after on the old lens drum 2 that do not improve;
Fig. 2 is that Fig. 1 is along A-A direction full sectional view;
Fig. 3 is the full sectional view not doing the lens drum 2 improved in Fig. 1;
Fig. 4 is lens 1 full sectional views vertically;
Fig. 5 is the three-dimensional cutaway view of the lens drum 2 after improving;
Fig. 6 is the D place enlarged drawing in Fig. 5;
Two pieces of lens 1 are assemblied in after on the lens drum after improvement 2, along the full sectional view of lens drum 2 axis by Fig. 7;
Fig. 8 is the E place enlarged drawing of Fig. 7;
Fig. 9 is the outside drawing of the lens drum 2 after improving;
Figure 10 be in Fig. 9 along B to or along C to observing the view that obtains after the lens drum 2 after improving;
In figure, the title of each sequence number and correspondence is respectively:
1, lens;
11, the bottom of lens 1;
12, the lateral wall of lens 1;
2, lens drum;
21, the madial wall of lens drum 2;
22, annular boss;
23, annular sidewall;
The protrusion platform of 23a, annular sidewall 23
24, bleeder vent;
25, the platform of annular boss 22;
26, annular relief groove;
3, cavity.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
With reference to figure 5, improvement part of the present utility model is lens drum 2.The centre of the madial wall 21 of lens drum 2 is provided with to projecting inward annular sidewall 23.Internal diameter due to annular sidewall 23 is less than madial wall 21, and therefore the both sides of annular sidewall 23 and madial wall 21 form two protrusion platform 23a.On the madial wall 21 of the both sides of annular sidewall 23, be also respectively arranged with two annular boss 22.The internal diameter of annular boss 22 is greater than the internal diameter of annular sidewall 23.Therefore, be understandable that, the internal diameter of madial wall 21 is greater than the internal diameter of annular boss 22, and the internal diameter of annular boss 22 is greater than the internal diameter of annular sidewall 23.Annular boss 22 and annular sidewall 23 are at the axially interval certain interval of lens drum 2, and this gap is for holding annular relief groove 26.Be understandable that, annular relief groove 26 to be also on madial wall 21 and to have two places, and this two places annular relief groove 26 lays respectively at the two ends of annular sidewall 23.
Said when assembling second piece of lens 1 in the introduction in order to avoid occurring, easily there is the problem that second piece of lens 1 comes off from lens drum 2.With reference to figure 5, the madial wall along lens drum 2 is needed to offer some bleeder vents 24.With reference to figure 6, after the madial wall of lens drum 2 has offered bleeder vent 24, successively at two ends fit on two pieces of lens 1, two pieces of lens 1 of lens drum 2 and the Inner Constitution of lens drum 2 cavity 3.When filling second piece of lens 1, although the air in cavity 3 is compressed, but due to the existence of bleeder vent 24, atmospheric pressure in cavity 3 and ambient atmosphere pressure are consistent very soon, make bonding the same on lens drum 2 of the bonding and first piece lens 1 of second piece of lens 1 on lens drum 2, firmly and be not easy to come off.Here it should be noted that, first piece of lens 1 is first assemblied on lens drum 2, is contained on lens drum 2 after second piece of lens 1.Certainly, can be that second piece of lens 1 first fills, dress after first piece of lens 1, this have anything to affect yet.
Please refer to Figure 10, as one of them embodiment, bleeder vent 24 is separately positioned on the madial wall at lens drum 2 two ends.The number of the bleeder vent 24 at two ends can be identical, also can not be identical.With reference to figure 5 and Fig. 6, in the present embodiment, each bleeder vent 24 of every one end of lens drum be along end, lens drum 2 one end madial wall 21 inwards, then successively through annular boss 22 and annular relief groove 26, turn back, until the inside surface of annular sidewall 23 in the direction, the center of circle of the bottom of annular relief groove 26 to lens drum 2.
After all bleeder vents 24 complete, with reference to figure 5, Fig. 6, Fig. 7 and Fig. 8, for wherein one end of lens drum 2, on the protrusion platform 23a of first annular sidewall 23 in fig. 5 and fig. and annular boss 22 coats UV glue, the bottom 11 of the lens 1 in Fig. 4 is placed on and protrudes on platform 23a, lateral wall 12 leans against on annular boss 22, is connected on lens drum 2 by UV is gluing.Then with UV light irradiation first piece of lens 1 until UV glue solidifies completely.Like this, first piece of lens 1 is just fixed on the side of lens drum 2 inside, and the effect after its assembling is as Fig. 7 and Fig. 8.By same way, second piece of lens 1 is assemblied in the other end of lens drum 2, then also uses UV light irradiation second piece of lens 1, until UV glue solidifies completely.With reference to figure 7, because bleeder vent 24 has all been offered at the two ends of lens drum 2, then identical with ambient atmosphere pressure with the atmospheric pressure of the cavity 3 that the madial wall of lens drum 2 is formed by two pieces of lens 1, thus ensure that second piece of lens 1 also firmly can be fixed on the other end of lens drum 2, can not come off from lens drum 2.
When two pieces of lens 1 are all fixed on after on lens drum 2, lens drum 2 is put into 45 degree of drying boxes dry 30 minutes together with two pieces of lens 1, then takes out.With reference to figure 8, the then full fluid sealant of point in the annulus that the lateral wall 12 of lens 1 and the madial wall 21 of lens drum 2 are formed, because fluid sealant is semifluid, it can not flow into cavity 3 along the bleeder vent 24 shown in Fig. 6.Meanwhile, the lateral wall 12 due to lens 1 is tightly resisted against (see Fig. 8) on the annular boss 22 of lens drum 2, also makes fluid sealant only can fall on the platform 25 of annular boss 22 as shown in Figure 6, can not flow in cavity 3.
With reference to figure 6, it should be noted that, although in the utility model bleeder vent 24 by end, lens drum 2 two ends madial wall inwards, until after bottom annular relief groove 26, then turn back in the direction, the center of circle to lens drum 2, until the inside surface of annular sidewall 23, communicate with the atmospheric pressure and external atmosphere pressure that ensure cavity 3.But, theoretically, the reference position of bleeder vent 24 also can from the both ends of lens drum 2 to annular boss 22 madial wall 21 on any place, only can bring the inconvenience of the processing of bleeder vent 24 like this, but still can realize like this object that the atmospheric pressure of cavity 3 and external atmosphere pressure communicate.In addition, although bleeder vent 24 has all been offered at the two ends of the present embodiment on lens drum 2, but, if only offer a bleeder vent 24 on one end madial wall of lens drum, the object that can realize cavity 3 atmospheric pressure and external atmosphere pressure communicate, can realize the object be firmly bonded in by second piece of lens 1 on lens drum 1 too.Therefore, every can realize cavity 3 atmospheric pressure and the madial wall 21 on lens drum 2 that communicates of external atmosphere pressure on open-celled structure, all belong to protection domain of the present utility model.
In addition, the utility model illustrate only the situation that lens 1 are two pieces.In fact, the lens 1 on lens drum 2 also likely more than two pieces, such as are more than 3 pieces or 3 pieces.If lens 1 are more than 3 pieces or 3 pieces, when on lens drum 2 mounted lens 1 time, in order to ensure that all the other lens arrangement except first piece of lens are firmly unlikely to come off on lens drum 2, then still need to offer bleeder vent on the madial wall of lens drum 2.If but only had one piece of lens, then the madial wall noting be used in lens drum 2 would offer bleeder vent 24.
In sum, owing at least offering at least one bleeder vent being communicated with external atmosphere pressure on the madial wall 21 in lens drum 2 one end, when assembling second piece of lens, because the atmospheric pressure of cavity 3 that is made up of the madial wall 21 of two pieces of lens and lens drum 2 and external atmosphere pressure communicate, ensure that second piece of lens is solid and reliable on lens drum 2, can not split away off from lens drum 2.In addition, due to fluid sealant on point in the annulus that the madial wall 21 of the last lateral wall 12 at lens 1 and lens drum 2 is formed, make the moisture in air and impurity can not enter the inside of lens drum 2, thus ensure that lens are in drying, clean state always.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a lens fixing device, comprise: lens drum, described lens drum has through hole in the axial direction, at least two pieces of lens are adhesively fixed on the two ends of described lens drum inside respectively, the madial wall of described at least two pieces of lens and described lens drum forms at least one cavity, it is characterized in that, the madial wall of at least one end of described lens drum is provided with and is communicated with at least one cavity described and at least one extraneous bleeder vent.
2. lens fixing device as claimed in claim 1, it is characterized in that: described lens are two pieces, described cavity is one; The two ends madial wall of described lens drum is provided with some described bleeder vents.
3. lens fixing device as claimed in claim 2, it is characterized in that: the madial wall of described lens drum is provided with to projecting inward annular sidewall, described annular sidewall and described madial wall form two ring-shaped platforms; Described two ring-shaped platforms are respectively used to place described two pieces of lens.
4. lens fixing device as claimed in claim 3, is characterized in that: on the madial wall at the annular sidewall two ends of described lens drum, be also respectively arranged with one to projecting inward annular boss; The internal diameter of described annular boss is greater than the internal diameter of described annular sidewall; The lateral wall of described two pieces of lens abuts against on the madial wall of described annular boss.
5. lens fixing device as claimed in claim 4, is characterized in that: the lens drum madial wall between described annular boss and described annular sidewall is also respectively arranged with two annular relief grooves.
6. lens fixing device as claimed in claim 5, is characterized in that: described bleeder vent extends to bottom described relief groove along the madial wall of described lens drum inwards, then extends radially inwardly to described annular sidewall along lens drum.
7. lens fixing device as claimed in claim 4, is characterized in that: the fluid sealant being filled with semi-fluid condition in the annulus that the madial wall of described lens drum and the lateral wall of described lens are formed; Described annulus is positioned at the outside of described annular boss.
8. lens fixing device according to any one of claim 4-7, is characterized in that: protrusion platform and described two annular boss of described annular sidewall are all coated with UV glue; Described two pieces of lens are connected on described lens drum respectively by UV is gluing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520401231.3U CN204758901U (en) | 2015-06-11 | 2015-06-11 | Lens fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520401231.3U CN204758901U (en) | 2015-06-11 | 2015-06-11 | Lens fixation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204758901U true CN204758901U (en) | 2015-11-11 |
Family
ID=54473595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520401231.3U Active CN204758901U (en) | 2015-06-11 | 2015-06-11 | Lens fixation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204758901U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323001A (en) * | 2020-03-27 | 2020-06-23 | 中铁二局集团有限公司 | Forced centering device for engineering measurement and use method thereof |
| TWI756490B (en) * | 2018-11-16 | 2022-03-01 | 光芒光學股份有限公司 | Imaging lens and manufacturing method for the same |
-
2015
- 2015-06-11 CN CN201520401231.3U patent/CN204758901U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI756490B (en) * | 2018-11-16 | 2022-03-01 | 光芒光學股份有限公司 | Imaging lens and manufacturing method for the same |
| CN111323001A (en) * | 2020-03-27 | 2020-06-23 | 中铁二局集团有限公司 | Forced centering device for engineering measurement and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204758901U (en) | Lens fixation device | |
| WO2020015804A8 (en) | An intermittent urinary catheter assembly | |
| CN202382141U (en) | Vehicle graph projection lamp | |
| US20130088881A1 (en) | Waterproof apparatus | |
| CN106612620A (en) | Optical element module and method for manufacturing optical element module | |
| CN203530143U (en) | Box-type safe hollow glass | |
| WO2012028996A3 (en) | Lamp with graded absorption coating | |
| CN105491273B (en) | Camera water repellent component and LED light device | |
| CN107697391A (en) | A kind of core box and its manufacture craft | |
| CN106013655A (en) | Water-cooled building decoration board | |
| CN204342661U (en) | A kind of three-layer type double glazing main body | |
| CN209845289U (en) | Waterproof loudspeaker for automobile | |
| CN204372828U (en) | The street lamp of a kind of LED lid and this light cover of application | |
| CN203324630U (en) | Camera moistureproof cover | |
| CN208145458U (en) | A kind of novel quickly dismantled toy house | |
| CN202578360U (en) | Moisture-proof hollow glass | |
| CN206176229U (en) | Car headlight structure | |
| CN208062052U (en) | The encapsulating structure of imaging sensor | |
| CN207316614U (en) | A kind of light compensating lamp with gas permeable devices | |
| CN206207332U (en) | A kind of LED road lamp shade | |
| CN205186944U (en) | Flat card suitable for fragile article packing | |
| CN213330682U (en) | Dehumidifying and damp-proof structure for window | |
| CN103600930A (en) | Antioxidant shoe box | |
| CN204042668U (en) | A kind of quick heat radiating automobile lamp | |
| CN103132618A (en) | Heat-preservation technology for usage of vacuum glass on wall body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room L302, Building 2, Skyworth Innovation Valley, No. 8 Tangtou 1st Road, Tangtou Community, Shiyan Street, Bao'an District, Shenzhen City, Guangdong Province, 518108 Patentee after: Shenzhen Moting Medical Technology Co.,Ltd. Country or region after: China Address before: 518112 Room 601, No. 3, Juyin technology industrial plant, No. 1, Ganli Road, gankeng community, Buji street, Longgang District, Shenzhen, Guangdong Patentee before: SHENZHEN CERTAINN TECHNOLOGY Co.,Ltd. Country or region before: China |