CN101097283B - Assembling method of infrared cut-off optical filter in lens cone - Google Patents
Assembling method of infrared cut-off optical filter in lens cone Download PDFInfo
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- CN101097283B CN101097283B CN200610061360A CN200610061360A CN101097283B CN 101097283 B CN101097283 B CN 101097283B CN 200610061360 A CN200610061360 A CN 200610061360A CN 200610061360 A CN200610061360 A CN 200610061360A CN 101097283 B CN101097283 B CN 101097283B
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- filter
- infrared cut
- lens barrel
- lens
- cutoff filter
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Abstract
The invention provides an assembly method of infrared cut-off filter in drawtube which includes: providing a drawtube subassembly which includes drawtube and separator in the drawtube; providing a infrared cut-off filter which is contained in image side of the drawtube and resists to said separator; proving a laser light beam whose wavelength is in range of said infrared cut-off filter, it injects to said infrared cut-off filter in direction of a sharp angle with central axes, and reflected to sidewall of the drawtube by the infrared cut-off filter to heat sidewall of the drawtube injected to intenerating temperature; cooling drawtube sidewall heated to fix the infrared cut-off filter. The assembly method of the infrared cut-off filter in drawtube can assembly infrared cut-off filter quickly and precisely.
Description
Technical field
The present invention relates to a kind of assemble method of optical filter, especially the assemble method of infrared cut-off optical filter in lens cone.
Background technology
Along with the development of optical image technology, the camera lens module is widely used in various imaging devices such as digital camera, video camera.Usually, the camera lens module comprises optical elements such as a plurality of lens of being contained in the lens barrel, iris diaphragm plate, cutoff filter, and the interval body etc. that is used to control distance between each optical element.In the assembling process of this kind camera lens module, optical elements such as described a plurality of lens, iris diaphragm plate, optical filter are contained in the lens barrel successively described cutoff filter and separate by an interval body with this optical filter adjacent lenses.Described cutoff filter is glued together by gluing process and interval body.
Cutoff filter is in when assembling, normally packs in lens barrel according to predefined procedure optical elements such as a plurality of lens and iris diaphragm plate earlier and separates with interval body; Then, provide an interval body, with pack into lens barrel and make it of this interval body against the optical element of living in the aforementioned lens barrel; With the adhesive dispensing device with needle-like glue injection part interval body away from lens barrel in the excircle gluing on a surface of optical element; The cutoff filter of packing into, thus cutoff filter and interval body is glued together.
Yet the some glue process of adhesive dispensing device is comparatively consuming time and some glue precision is wayward in the above-mentioned assemble method, thereby the inhomogeneous or some glue quantity not sufficient of appearance point glue easily causes the adhesion deficiency between cutoff filter and the interval body.
In view of this, be necessary to provide a kind of assemble method of infrared cut-off optical filter in lens cone, it can be assembled in cutoff filter in the lens barrel fast and accurately.
Summary of the invention
Below a kind of assemble method of infrared cut-off optical filter in lens cone will be described with embodiment, it can be assembled in cutoff filter in the lens barrel fast and accurately.
A kind of assemble method of infrared cut-off optical filter in lens cone, it comprises step: a barrel assembly is provided, and it comprises lens barrel and is housed in the interior interval body of this lens barrel; A cutoff filter is provided, this cutoff filter is contained in states interval body as side and against the residence in the lens barrel; Provide wavelength to be positioned at the laser beam of described cutoff filter filter range, to be incident on the described cutoff filter with respect to the acutangulate direction of the central axis of lens barrel, and reflex to the lens barrel sidewall by this cutoff filter, in order to heat irradiated lens barrel sidewall to softening temperature; Cool off heated lens barrel sidewall so that the cutoff filter bonding is fixing.
The assemble method of described infrared cut-off optical filter in lens cone, it utilizes wavelength to be positioned at the laser beam irradiation cutoff filter of cutoff filter filter range, and reflex to the lens barrel sidewall by this cutoff filter, in order to heat irradiated lens barrel sidewall, treat the cutoff filter bonding to be fixed after the cooling of lens barrel sidewall to softening temperature.The assemble method of this kind infrared cut-off optical filter in lens cone can be assembled in cutoff filter in the lens barrel fast and accurately.
Description of drawings
Fig. 1 is the barrel assembly structural representation that the embodiment of the invention provides.
Fig. 2 is the structural representation after lens barrel shown in Figure 1 is accommodated cutoff filter.
Fig. 3 is the synoptic diagram that adopts the laser beam irradiation cutoff filter.
Fig. 4 is the light ray propagation direction synoptic diagram behind the laser beam incident cutoff filter.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail.
Referring to Fig. 1 to Fig. 4, the assemble method of the infrared cut-off optical filter in lens cone that the embodiment of the invention provides comprises the steps:
Referring to Fig. 1, a barrel assembly 10 is provided, it comprises lens barrel 12 and is housed in first lens 14 in this lens barrel 12, iris diaphragm plate 16, second lens 18 and interval body 19.
In the present embodiment, described lens barrel 12 comprises lens barrel front end 122 and cylindrical body portion 124.Described lens barrel front end 122 is one with main part 124, and its material is optional from engineering plastics such as tygon, polypropylene, polyvinyl chloride and polystyrene.This lens barrel front end 122 is positioned at close thing side one end of main part 124, and this lens barrel front end 122 has the funnel-form incidence hole 1220 that a diameter extremely successively decreases as side from the thing side.The outside of this main part 124 is provided with screw thread 1240, and the inside of main part 124 extremely contains described first lens 14 as side, iris diaphragm plate 16, second lens 18 and interval body 19 successively from the thing side.
Referring to Fig. 2, a cutoff filter 20 is provided, this cutoff filter 20 is contained in states interval body 19 as side and against the residence in the lens barrel 10.
In the present embodiment, this cutoff filter 20 comprises a substrate 22 and is formed at a lip-deep filter coating 24 of substrate 22.Preferably, after this cutoff filter 20 is placed in the main part 124 of lens barrel 10, its side with filter coating 24 towards and state interval body 19 against the residence.
Referring to Fig. 3, the laser beam (shown in Fig. 3 arrow) that provides wavelength to be positioned at described cutoff filter 20 filter ranges, make this laser beam be incident to respect to central axis (shown in Fig. 3 dotted line) θ that has angle of lens barrel 10 as described on the edge of cutoff filter 20.
Usually, cutoff filter 20 filter ranges are 700～1100 nanometers (nm).This laser beam is produced by laser instrument 30.This laser instrument 30 can be that operation wavelength is neodymium-doped yttrium-aluminum garnet (Nd-YAG) laser instrument of 1064 nanometers, ytterbium yttrium aluminum garnet (Yd-YAG) laser instrument that operation wavelength is 940 nanometers, or operation wavelength is neodymium vanadate (Nd-Vanadate) laser instrument of 1047～1064 nanometers etc.Described angle theta is preferably more than 0 degree and less than 90 degree, also is acute angle.It is neodymium-doped yttrium-aluminum garnet (Nd-YAG) the laser instrument generation laser beam of 1064 nanometers that present embodiment adopts operation wavelength, and this laser beam is incident on the described cutoff filter 20 in angle of 45 degrees with respect to the central axis of lens barrel 10.
Referring to Fig. 4, be incident to the laser beam of cutoff filter 20, transmissive is crossed substrate 22 and is arrived at filter coating 24, this laser beam can be from the circumference side outgoing of vicinity main part 124 inwalls of substrate 22 after by filter coating 24 reflection, thereby is heated to softening temperature with energy that lens barrel sidewall sections that this cutoff filter 20 is close to can absorb laser beam.
Cool off heated lens barrel sidewall so that cutoff filter 20 bondings are fixing.Concrete steps are: turn off laser instrument 30, allow the lens barrel sidewall natural cooling that is heated to softening temperature then.After treating the cooling of lens barrel sidewall, the circumference side of the substrate 22 of cutoff filter 20 just can be bonded on the lens barrel sidewall, so cutoff filter 20 can be assembled in the lens barrel 12.
Be understandable that the barrel assembly 10 that said method provides is not limited to aforesaid structure, can also contain 3 or more lens as, this barrel assembly 10 and be used for optical imagery.
The assemble method of the infrared cut-off optical filter in lens cone that present embodiment provides, it utilizes wavelength to be positioned at the laser beam irradiation cutoff filter 20 of cutoff filter 20 filter ranges, and reflex to the lens barrel sidewall by this cutoff filter 20, in order to heat irradiated lens barrel sidewall, to treat cutoff filter 20 bondings to be fixed after the cooling of lens barrel sidewall to softening temperature. the assemble method of this kind infrared cut-off optical filter in lens cone can be assembled in cutoff filter in the lens barrel fast and accurately.
In addition, those skilled in the art also can do other variation in spirit of the present invention, as the corner dimension between the substrate surface of wavelength, proper transformation laser beam and the cutoff filter of proper transformation laser beam etc., as long as it does not depart from technique effect of the present invention and all can.The variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (5)
1. the assemble method of an infrared cut-off optical filter in lens cone, it comprises step:
A barrel assembly is provided, and it comprises lens barrel and is housed in the interior interval body of this lens barrel that the material of this lens barrel is engineering plastics;
A cutoff filter is provided, this cutoff filter is contained in states interval body as side and against the residence in the lens barrel;
Provide wavelength to be positioned at the laser beam of described cutoff filter filter range, to be incident on the described cutoff filter with respect to the acutangulate direction of the central axis of lens barrel, and reflex to the lens barrel sidewall by this cutoff filter, in order to heat irradiated lens barrel sidewall to softening temperature;
Cool off heated lens barrel sidewall so that the cutoff filter bonding is fixing.
2. the assemble method of infrared cut-off optical filter in lens cone as claimed in claim 1 is characterized in that, described cutoff filter comprises substrate and be formed at a lip-deep filter coating of substrate that this filter coating is stated interval body against the residence.
3. the assemble method of infrared cut-off optical filter in lens cone as claimed in claim 1 is characterized in that, the wavelength coverage of described laser beam is 700～1100 nanometers.
4. the assemble method of infrared cut-off optical filter in lens cone as claimed in claim 3 is characterized in that, described laser beam is produced by neodymium yttrium aluminum garnet laser, ytterbium yttrium-aluminum garnet laser or neodymium vanadate lasers.
5. the assemble method of infrared cut-off optical filter in lens cone as claimed in claim 1 is characterized in that, described acute angle is 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610061360A CN101097283B (en) | 2006-06-28 | 2006-06-28 | Assembling method of infrared cut-off optical filter in lens cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610061360A CN101097283B (en) | 2006-06-28 | 2006-06-28 | Assembling method of infrared cut-off optical filter in lens cone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101097283A CN101097283A (en) | 2008-01-02 |
| CN101097283B true CN101097283B (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610061360A Expired - Fee Related CN101097283B (en) | 2006-06-28 | 2006-06-28 | Assembling method of infrared cut-off optical filter in lens cone |
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| Country | Link |
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| CN (1) | CN101097283B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020118800A (en) * | 2019-01-22 | 2020-08-06 | オリンパス株式会社 | Optical assembly manufacturing method and lens frame |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2412228Y (en) * | 2000-01-18 | 2000-12-27 | 麦科特光电股份有限公司 | Portable three-purpose mirror |
| US6710945B1 (en) * | 2002-06-03 | 2004-03-23 | Amkor Technology, Inc. | Injection molded lens-barrel assembly and method for fabricating lens-barrel and mount assemblies |
| CN1791182A (en) * | 2004-12-14 | 2006-06-21 | 新光电气工业株式会社 | Image pickup module, method of manufacturing the same, and spacer with infrared ray cut film |
-
2006
- 2006-06-28 CN CN200610061360A patent/CN101097283B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2412228Y (en) * | 2000-01-18 | 2000-12-27 | 麦科特光电股份有限公司 | Portable three-purpose mirror |
| US6710945B1 (en) * | 2002-06-03 | 2004-03-23 | Amkor Technology, Inc. | Injection molded lens-barrel assembly and method for fabricating lens-barrel and mount assemblies |
| CN1791182A (en) * | 2004-12-14 | 2006-06-21 | 新光电气工业株式会社 | Image pickup module, method of manufacturing the same, and spacer with infrared ray cut film |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平9-281377A 1997.10.31 |
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| CN101097283A (en) | 2008-01-02 |
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