CN204925433U - Membrane system structure of dual -purpose type light filter of day night - Google Patents
Membrane system structure of dual -purpose type light filter of day night Download PDFInfo
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- CN204925433U CN204925433U CN201520545208.1U CN201520545208U CN204925433U CN 204925433 U CN204925433 U CN 204925433U CN 201520545208 U CN201520545208 U CN 201520545208U CN 204925433 U CN204925433 U CN 204925433U
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- rete
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Abstract
The utility model discloses a membrane system structure of dual -purpose type light filter of day night, include glass substrate and plate the filter coating on this glass substrate, the filter coating is including plating the first low refracting index rete on glass substrate in proper order, main membrane system, high refractive index rete and second hang down the refracting index rete, main membrane system comprises high refractive index rete and the low refracting index rete of third in turn, total number of piles of main membrane system is 82 layers, first low refracting index rete is the silica rete of 115nm thickness, the low refracting index rete of second is the silica rete of 75.11nm thickness, the high refractive index rete is five oxidations, the three titanium film layers that optical thickness is 14 lambda, the low refracting index rete of third is the silica rete that optical thickness is 14 lambda. The utility model discloses the membrane system structure has not only satisfied the optical index requirement of day night type control light filter, and visible light and near -infrared 850nm's the biggest transmissivity peak value all is greater than 90% moreover. Play very big effect to imaging system's the use at night and the reduction of color.
Description
Technical field
The utility model relates to a kind of device of optical film, particularly relates to a kind of film structure of day and night type optical filter.
Background technology
Existing optical filter on monitoring camera, due to the restriction of rete production technology, for when not having light a night, its imaging effect is poor, greatly have impact on the quality monitoring of monitoring camera.
If adopt two panels can increase again the cost of monitoring camera respectively for the optical filter of day and night, therefore, optical filter how is made when at night without any can imaging be effectively also one of direction that those skilled in the art are devoted to study when light.
Summary of the invention
The purpose of this utility model, a kind of film structure of day and night type optical filter is provided exactly in order to solve the problem, this film structure effectively solves night when without any can effectively imaging when light, and ensure also can effectively imaging when there being light simultaneously.
The purpose of this utility model is achieved in that
The film structure of a kind of day and night type optical filter of the present utility model, comprise glass substrate and be plated in the filter coating on this glass substrate, described filter coating comprises the first low-index film plated successively on the glass substrate, main film system, high refractive index layer and the second low-index film, described main film system is alternately made up of high refractive index layer and the 3rd low-index film, total number of plies of described main film system is 82 layers, described first low-index film is the silica coating of 115nm thickness, described second low-index film is the silica coating of 75.11nm thickness, described high refractive index layer is optical thickness is that five of 1/4 λ is oxidized Tritanium/Trititanium retes, the silica coating of described 3rd low-index film to be optical thickness be 1/4 λ.
The utility model film structure not only meets the optical specifications of day and night type monitoring optical filter, and the maximum transmission peak value of visible ray and near infrared 850nm is all greater than 90%.Night for imaging system uses and very large effect is played in the reduction of color.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1, there is shown the film structure of day and night type optical filter, the filter coating comprising glass substrate 4 and be plated on this glass substrate 4, filter coating comprises the first low-index film 1 be plated in successively on glass substrate 4, main film system 2, high refractive index layer 21 and the second low-index film 3, main film system 2 is alternately made up of high refractive index layer 21 and the 3rd low-index film 22, total number of plies of main film system 2 is 82 layers, first low-index film 1 is the silica coating of 115nm thickness, second low-index film 3 is the silica coating of 75.11nm thickness, high refractive index layer 21 is optical thicknesses is that five of 1/4 λ is oxidized Tritanium/Trititanium retes, the silica coating of the 3rd low-index film 22 to be optical thicknesses be 1/4 λ.
The utility model film structure not only meets the optical specifications of day and night type monitoring optical filter, and the maximum transmission peak value of visible ray and near infrared 850nm is all greater than 90%.Night for imaging system uses and very large effect is played in the reduction of color.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, when not departing from spirit and scope of the present utility model, various conversion or modification can also be made, therefore all equivalent technical schemes also should belong to category of the present utility model, should be limited by each claim.
Claims (1)
1. the film structure of a day and night type optical filter, it is characterized in that, comprise glass substrate and be plated in the filter coating on this glass substrate, described filter coating comprises the first low-index film plated successively on the glass substrate, main film system, high refractive index layer and the second low-index film, described main film system is alternately made up of high refractive index layer and the 3rd low-index film, total number of plies of described main film system is 82 layers, described first low-index film is the silica coating of 115nm thickness, described second low-index film is the silica coating of 75.11nm thickness, described high refractive index layer is optical thickness is that five of 1/4 λ is oxidized Tritanium/Trititanium retes, the silica coating of described 3rd low-index film to be optical thickness be 1/4 λ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545208.1U CN204925433U (en) | 2015-07-24 | 2015-07-24 | Membrane system structure of dual -purpose type light filter of day night |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545208.1U CN204925433U (en) | 2015-07-24 | 2015-07-24 | Membrane system structure of dual -purpose type light filter of day night |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204925433U true CN204925433U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520545208.1U Expired - Fee Related CN204925433U (en) | 2015-07-24 | 2015-07-24 | Membrane system structure of dual -purpose type light filter of day night |
Country Status (1)
| Country | Link |
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| CN (1) | CN204925433U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291793A (en) * | 2016-11-04 | 2017-01-04 | 天津津航技术物理研究所 | A kind of short-wave infrared narrow band pass filter and preparation method thereof |
| CN106526732A (en) * | 2016-12-29 | 2017-03-22 | 三明福特科光电有限公司 | Integrated day and night optical filter |
| CN107254665A (en) * | 2017-06-13 | 2017-10-17 | 深圳市鼎新光电有限公司 | A kind of plating method of new day and night type product |
| CN110501770A (en) * | 2018-05-18 | 2019-11-26 | 北京首量科技股份有限公司 | A kind of preparation process of vision filter |
-
2015
- 2015-07-24 CN CN201520545208.1U patent/CN204925433U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291793A (en) * | 2016-11-04 | 2017-01-04 | 天津津航技术物理研究所 | A kind of short-wave infrared narrow band pass filter and preparation method thereof |
| CN106291793B (en) * | 2016-11-04 | 2019-02-01 | 天津津航技术物理研究所 | A kind of short-wave infrared narrow band filter and preparation method thereof |
| CN106526732A (en) * | 2016-12-29 | 2017-03-22 | 三明福特科光电有限公司 | Integrated day and night optical filter |
| CN106526732B (en) * | 2016-12-29 | 2023-05-23 | 三明福特科光电有限公司 | Integrated day and night optical filter |
| CN107254665A (en) * | 2017-06-13 | 2017-10-17 | 深圳市鼎新光电有限公司 | A kind of plating method of new day and night type product |
| CN110501770A (en) * | 2018-05-18 | 2019-11-26 | 北京首量科技股份有限公司 | A kind of preparation process of vision filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20180724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |