CN203965654U - Purple cutoff filter - Google Patents
Purple cutoff filter Download PDFInfo
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- CN203965654U CN203965654U CN201420345690.XU CN201420345690U CN203965654U CN 203965654 U CN203965654 U CN 203965654U CN 201420345690 U CN201420345690 U CN 201420345690U CN 203965654 U CN203965654 U CN 203965654U
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- purple
- transparency carrier
- infrared cut
- cut coating
- cutoff filter
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Abstract
The utility model provides a kind of purple cutoff filter, belongs to optical technical field.It has solved the problem that existing optical filter imaging effect is poor, be unfavorable for subsequent handling processing.This purple cutoff filter, comprise transparency carrier, the leading flank of transparency carrier is coated with some layers of purple infrared cut coating, the trailing flank of transparency carrier is also coated with some layers of purple infrared cut coating, the purple infrared cut coating of transparency carrier trailing flank equates with the number of plies of the purple infrared cut coating of transparency carrier leading flank, and purple infrared cut coating replaces stacking forming by the rete of high-index material and low-index material.The utlity model has imaging effect good, be conducive to the advantages such as subsequent handling processing.
Description
Technical field
the utility model belongs to optical technical field, relates 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 permission visible ray (400nm-700nm) 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 situation that change the gross thickness of plated film and process time not quite, save 30% cost nearly.
this optical filter is added to man-hour, at the front surface of monoblock substrate, plate 5 layers of anti-reflection film, in the rear surface of substrate, plate 43 layers of infrared cut coating, then the substrate cut of coating is become to specify after size for subsequent handling processing.Because the coating quantity of substrate both sides is different, cause both sides stressed not etc. after being cut into fritter, optical filter is not case of bending, and this forniciform optical filter is used in mobile phone camera, imaging effect is poor.
Summary of the invention
the purpose of this utility model is to have the problems referred to above for existing technology, has proposed the purple cutoff filter that a kind of imaging effect is good, be conducive to subsequent handling processing.
the purpose of this utility model 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 be five oxidation Tritanium/Trititaniums (ti
3o
5 ) or titania (tiO
2 ) or zirconium dioxide (zrO
2 ).
in above-mentioned purple cutoff filter, described low refractive material be silicon dioxide (siO
2 ).
compared with prior art, this purple cutoff filter has the following advantages:
at the front and back sides of transparency carrier, plate the purple infrared cut coating of identical layer, 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.
Accompanying drawing explanation
fig. 1 is the structural representation of a kind of preferred embodiment of providing of the utility model.
in figure, 1, transparency carrier; 2, purple infrared cut coating.
Embodiment
be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model 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, in the both sides of transparency carrier 1, being coated with respectively 20-30 layer thickness 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, the number of plies that is positioned at the purple infrared cut coating 2 of transparency carrier 1 both sides equates.
concrete, in the both sides of transparency carrier 1, be coated with respectively 25 layers of purple infrared cut coating 2, the thickness of purple infrared cut coating 2 is 2.75 μ m, in the both sides of transparency carrier 1, plate the purple infrared cut coating 2 of identical layer, 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 be five oxidation Tritanium/Trititaniums (ti
3o
5 ) or titania (tiO
2 ) or zirconium dioxide (zrO
2 ); Low refractive material be silicon dioxide (siO
2 ).
specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model 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
3o
5) or titania (TiO
2) or zirconium dioxide (ZrO
2).
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
2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345690.XU CN203965654U (en) | 2014-06-27 | 2014-06-27 | Purple cutoff filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345690.XU CN203965654U (en) | 2014-06-27 | 2014-06-27 | Purple cutoff filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203965654U true CN203965654U (en) | 2014-11-26 |
Family
ID=51926216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420345690.XU Active CN203965654U (en) | 2014-06-27 | 2014-06-27 | Purple cutoff filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203965654U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049292A (en) * | 2014-06-27 | 2014-09-17 | 温岭市现代晶体有限公司 | Ultraviolet-infrared cut-off optical filter |
| CN106932950A (en) * | 2017-03-28 | 2017-07-07 | 青岛海信电器股份有限公司 | Quantum dot color filter and preparation method, liquid crystal panel, liquid crystal display |
-
2014
- 2014-06-27 CN CN201420345690.XU patent/CN203965654U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049292A (en) * | 2014-06-27 | 2014-09-17 | 温岭市现代晶体有限公司 | Ultraviolet-infrared cut-off optical filter |
| CN106932950A (en) * | 2017-03-28 | 2017-07-07 | 青岛海信电器股份有限公司 | Quantum dot color filter and preparation method, liquid crystal panel, liquid crystal display |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 317500 No. 7, science and technology road, Wenling Economic Development Zone, Zhejiang, Taizhou Patentee after: Hangzhou Meidi Kay Photoelectric Technology Co. Ltd. Address before: 317500 No. 7, science and technology road, Wenling Economic Development Zone, Zhejiang, Taizhou Patentee before: Wenling city modern crystal company limited |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 317500 No. 7, science and technology road, Wenling Economic Development Zone, Zhejiang, Taizhou Patentee after: Zhejiang modern medice optoelectronics Co. Ltd. Address before: 317500 No. 7, science and technology road, Wenling Economic Development Zone, Zhejiang, Taizhou Patentee before: Wenling city modern crystal company limited |