CN104049292A - Ultraviolet-infrared cut-off optical filter - Google Patents
Ultraviolet-infrared cut-off optical filter Download PDFInfo
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- CN104049292A CN104049292A CN201410292624.5A CN201410292624A CN104049292A CN 104049292 A CN104049292 A CN 104049292A CN 201410292624 A CN201410292624 A CN 201410292624A CN 104049292 A CN104049292 A CN 104049292A
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- infrared cut
- purple
- transparency carrier
- cut coating
- ultraviolet
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Abstract
The invention provides an ultraviolet-infrared cut-off optical filter, and belongs to the technical field of optics. The ultraviolet-infrared cut-off optical filter solves the problems that an existing optical filter is poor in the imaging effect and subsequent machining is not facilitated. The ultraviolet-infrared cut-off optical filter comprises a transparent substrate. Both the front side face of the transparent substrate and the rear side face of the transparent substrate are coated with multiple layers of ultraviolet-infrared cut-off membranes, the number of layers of the ultraviolet-infrared cut-off membranes on the front side face is the same as that of the ultraviolet-infrared cut-off membranes on the rear side face of the transparent substrate, and the ultraviolet-infrared cut-off membranes are formed by alternatively stacking membrane layers of high-refractive index materials and low-refractive index materials. The ultraviolet-infrared cut-off optical filter has the advantages of being good in the imaging effect, beneficial to subsequent machining and the like.
Description
Technical field
The invention belongs to optical technical field, relate to a kind of optical filter, particularly a kind of purple cutoff filter.
Background technology
At present, the visible light transmissivity of the transparent glass substrate of optical filter only has 92%, and remaining 8% is reflected away by transparent glass substrate itself.In mobile phone camera, computer built-in camera, the first-class digital image-forming of automobile camera shooting field, if optical filter is not carried out to anti-reflection processing, CCD/CMOS imaging meeting is very poor.The cutoff filter with anti-reflection film is that a kind of visible ray (400nm-700nm) that allows sees through, and the optical filter of cut-off or reflect near infrared light (700nm-1100nm) is widely used in the digital image-forming fields such as digital camera, mobile phone camera, computer camera.Between pick-up lens and CCD/CMOS imageing sensor, add cutoff filter, energy elimination is by taking the photograph the high band light wave of phase camera lens, only allow the low frequency light wave in certain limit pass through, thereby filtering infrared waves effectively, eliminate its interference to CCD/CMOS imaging, improve resolution and the color reducibility of imaging, make clear picture and stable.
For example, the patent that the applicant had previously declared discloses a kind of cutoff filter, comprise substrate, the material of substrate is white glass, the front surface of substrate is coated with anti-reflection film (AR), and rear surface is coated with infrared cut coating (IR), and anti-reflection film and infrared cut coating replace stacking forming by the rete of high-index material and low-index material, the number of plies of anti-reflection film is 1-10 layer, and the number of plies of infrared cut coating is 40-50 layer.This optical filter can be realized the object that visible ray sees through 0-30 ° of incident angle maximum possible, reach the color rendition effect that is better than smalt cutoff filter, and in the case of the gross thickness of plated film and change process time little, save 30% cost nearly.
This optical filter is added to man-hour, plate 5 layers of anti-reflection film at the front surface of monoblock substrate, plate 43 layers of infrared cut coating in the rear surface of substrate, then process for subsequent handling after the substrate cut one-tenth of coating is specified size.Due to the coating quantity difference of substrate both sides, what cause both sides stressedly not etc. be not cut into after fritter, and optical filter is case of bending, and by this forniciform optical filter, in mobile phone camera, imaging effect is poor.
Summary of the invention
The object of the invention is to have the problems referred to above for existing technology, proposed the purple cutoff filter that a kind of imaging effect is good, be conducive to subsequent handling processing.
Object of the present invention can realize by following technical proposal:
This purple cutoff filter, comprise transparency carrier, it is characterized in that, the leading flank of described transparency carrier is coated with some layers of purple infrared cut coating, the trailing flank of described transparency carrier is also coated with some layers of purple infrared cut coating, the purple infrared cut coating of described transparency carrier trailing flank equates with the number of plies of the purple infrared cut coating of transparency carrier leading flank, and described purple infrared cut coating replaces stacking forming by the rete of high-index material and low-index material.
In above-mentioned purple cutoff filter, the material of described transparency carrier is optical glass, and the thickness of described transparency carrier is 0.5-1mm, and the thickness of described purple infrared cut coating is 2.5 μ m-3.0 μ m.
In above-mentioned purple cutoff filter, the thickness of described transparency carrier is 0.7 ㎜, and the thickness of described purple infrared cut coating is 2.75 μ m.
In above-mentioned purple cutoff filter, the purple infrared cut coating of described transparency carrier trailing flank is 20-30 layer, and the purple infrared cut coating of described transparency carrier leading flank is 20-30 layer.
In above-mentioned purple cutoff filter, the purple infrared cut coating of described transparency carrier trailing flank is 25 layers, and the purple infrared cut coating of described transparency carrier leading flank is 25 layers.
In above-mentioned purple cutoff filter, described high-index material is five oxidation Tritanium/Trititanium (Ti
o
) or titania (TiO
) or zirconium dioxide (ZrO
).
In above-mentioned purple cutoff filter, described low refractive material is silicon dioxide (SiO
).
Compared with prior art, this purple cutoff filter has the following advantages:
Plate the purple infrared cut coating of identical layer at the front and back sides of transparency carrier, the thickness of transparency carrier both sides is equated, be cut into after fritter, there is good flatness, thereby make imaging effect good, be conducive to the processing of subsequent handling.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of preferred embodiment provided by the invention.
In figure, 1, transparency carrier; 2, purple infrared cut coating.
Embodiment
Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
This purple cutoff filter, is mainly used in the camera of mobile phone, and as shown in Figure 1, it comprises transparency carrier 1, and in the present embodiment, the material of transparency carrier 1 is optical glass, and its thickness is 0.5-1mm, and as preferably, its thickness is 0.7 ㎜.
As shown in Figure 1, being coated with respectively 20-30 layer thickness in the both sides of transparency carrier 1 is the purple infrared cut coating 2 of 2.5 μ m-3.0 μ m, and this purple infrared cut coating 2 replaces stacking forming by the rete of high-index material and low-index material.Wherein, be positioned at transparency carrier 1 both sides purple infrared cut coating 2 the number of plies equate.
Concrete, be coated with respectively 25 layers of purple infrared cut coating 2 in the both sides of transparency carrier 1, the thickness of purple infrared cut coating 2 is 2.75 μ m, plate the purple infrared cut coating 2 of identical layer in the both sides of transparency carrier 1, the thickness of transparency carrier 1 both sides is equated, be cut into after fritter, there is good flatness, thereby make imaging effect good, be conducive to the processing of subsequent handling.
In the present embodiment, high-index material is five oxidation Tritanium/Trititanium (Ti
o
) or titania (TiO
) or zirconium dioxide (ZrO
); Low refractive material is silicon dioxide (SiO
).
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendments or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (7)
1. a purple cutoff filter, comprise transparency carrier (1), it is characterized in that, the leading flank of described transparency carrier (1) is coated with some layers of purple infrared cut coating (2), the trailing flank of described transparency carrier (1) is also coated with some layers of purple infrared cut coating (2), the purple infrared cut coating (2) of described transparency carrier (1) trailing flank equates with the number of plies of the purple infrared cut coating (2) of transparency carrier (1) leading flank, and described purple infrared cut coating (2) replaces stacking forming by the rete of high-index material and low-index material.
2. purple cutoff filter according to claim 1, it is characterized in that, the material of described transparency carrier (1) is optical glass, and the thickness of described transparency carrier (1) is 0.5-1mm, and the thickness of described purple infrared cut coating (2) is 2.5 μ m-3.0 μ m.
3. purple cutoff filter according to claim 2, is characterized in that, the thickness of described transparency carrier (1) is 0.7 ㎜, and the thickness of described purple infrared cut coating (2) is 2.75 μ m.
4. according to the purple cutoff filter described in claim 1 or 2 or 3, it is characterized in that, the purple infrared cut coating (2) of described transparency carrier (1) trailing flank is 20-30 layer, and the purple infrared cut coating (2) of described transparency carrier (1) leading flank is 20-30 layer.
5. purple cutoff filter according to claim 4, is characterized in that, the purple infrared cut coating (2) of described transparency carrier (1) trailing flank is 25 layers, and the purple infrared cut coating (2) of described transparency carrier (1) leading flank is 25 layers.
6. according to the purple cutoff filter described in claim 1 or 2 or 3, it is characterized in that, described high-index material is five oxidation Tritanium/Trititanium (Ti
o
) or titania (TiO
) or zirconium dioxide (ZrO
).
7. according to the purple cutoff filter described in claim 1 or 2 or 3, it is characterized in that, described low refractive material is silicon dioxide (SiO
).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410292624.5A CN104049292A (en) | 2014-06-27 | 2014-06-27 | Ultraviolet-infrared cut-off optical filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410292624.5A CN104049292A (en) | 2014-06-27 | 2014-06-27 | Ultraviolet-infrared cut-off optical filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104049292A true CN104049292A (en) | 2014-09-17 |
Family
ID=51502374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410292624.5A Pending CN104049292A (en) | 2014-06-27 | 2014-06-27 | Ultraviolet-infrared cut-off optical filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104049292A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549141A (en) * | 2016-01-22 | 2016-05-04 | 宁波永新光学股份有限公司 | Fluorescent optical filter assembly for medical examination system |
| CN105738995A (en) * | 2016-04-27 | 2016-07-06 | 深圳力合光电传感股份有限公司 | Cutoff filter |
| CN107957600A (en) * | 2018-01-17 | 2018-04-24 | 江苏康耐特光学有限公司 | A kind of anti-reflection anti-infrared plated film resin lens and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013077375A1 (en) * | 2011-11-21 | 2013-05-30 | 旭硝子株式会社 | Glass member with optical multilayer film, and near-infrared cut filter glass |
| CN203084230U (en) * | 2013-01-31 | 2013-07-24 | 温岭市现代晶体有限公司 | Blue-glass optical filter |
| CN203433138U (en) * | 2013-08-06 | 2014-02-12 | 美德瑞光电科技（上海）有限公司 | Low warping degree infrared cutoff filter |
| CN203965654U (en) * | 2014-06-27 | 2014-11-26 | 温岭市现代晶体有限公司 | Purple cutoff filter |
-
2014
- 2014-06-27 CN CN201410292624.5A patent/CN104049292A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013077375A1 (en) * | 2011-11-21 | 2013-05-30 | 旭硝子株式会社 | Glass member with optical multilayer film, and near-infrared cut filter glass |
| CN203084230U (en) * | 2013-01-31 | 2013-07-24 | 温岭市现代晶体有限公司 | Blue-glass optical filter |
| CN203433138U (en) * | 2013-08-06 | 2014-02-12 | 美德瑞光电科技（上海）有限公司 | Low warping degree infrared cutoff filter |
| CN203965654U (en) * | 2014-06-27 | 2014-11-26 | 温岭市现代晶体有限公司 | Purple cutoff filter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549141A (en) * | 2016-01-22 | 2016-05-04 | 宁波永新光学股份有限公司 | Fluorescent optical filter assembly for medical examination system |
| CN105738995A (en) * | 2016-04-27 | 2016-07-06 | 深圳力合光电传感股份有限公司 | Cutoff filter |
| CN107957600A (en) * | 2018-01-17 | 2018-04-24 | 江苏康耐特光学有限公司 | A kind of anti-reflection anti-infrared plated film resin lens and preparation method thereof |
| CN107957600B (en) * | 2018-01-17 | 2020-08-21 | 江苏康耐特光学有限公司 | Anti-reflection anti-infrared coated resin lens and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140917 |