CN206523651U - A kind of low reflection smalt optical filter - Google Patents
A kind of low reflection smalt optical filter Download PDFInfo
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- CN206523651U CN206523651U CN201720026991.XU CN201720026991U CN206523651U CN 206523651 U CN206523651 U CN 206523651U CN 201720026991 U CN201720026991 U CN 201720026991U CN 206523651 U CN206523651 U CN 206523651U
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Abstract
The utility model discloses a kind of low reflection smalt optical filter in filter technology field, including smalt substrate, the both sides up and down of the smalt substrate are provided with cushion, the cushion includes magnesium fluoride film layer and five oxidation Tritanium/Trititanium film layers, IR Cut IR-cut film layers are provided with the top of the cushion of top, the IR Cut IR-cuts film layer includes high-index material film and low-index material film, the bottom of cushion is provided with AR diaphragms described in the top and bottom of the IR Cut IR-cut film layers, the utility model can effectively amputate infrared veiling glare, it is not likely to produce imaging interference problem, cushion makes smalt substrate be combined well with IR Cut IR-cuts film layers and AR diaphragms, improve the binding ability between film layer, AR diaphragms are protected cushion and IR Cut IR-cut film layers, the absorption of IR Cut IR-cut film layers ends the effect of infrared waves to reach.
Description
Technical field
The utility model is related to filter technology field, is specially a kind of low reflection smalt optical filter.
Background technology
Cutoff filter is a kind of optical filter for allowing visible light-transmissive and ending or reflect infrared light, mainly
For digital camera, mobile phone, computer camera, monitor, videophone etc., it can make to filter off height by taking the photograph the light wave after phase camera lens
Frequency range, only allows a range of low frequency light wave to pass through.IR-cut is added between camera lens and CCD or cmos image sensor
Optical filter, can effectively suppress light wave higher than CCD or cmos image sensor spatial frequency by and cause ripple to disturb, and have
Effect ground suppresses infrared waves, improves colored CCD, cmos image sensor effective resolution and colour reproduction, makes image clearly
Stably.Common optical filter is influenceed by shooting angle, and imaging difference is larger during different angles becomes big, easy distortion, based on this,
Utility model devises a kind of low reflection smalt optical filter, to solve the above problems.
Utility model content
The purpose of this utility model is to provide a kind of low reflection smalt optical filter, to solve to carry in above-mentioned background technology
The common optical filter gone out is influenceed by shooting angle, and imaging difference is larger during different angles becomes big, the problem of easy distortion.
To achieve the above object, the utility model provides following technical scheme：A kind of low reflection smalt optical filter, including
Smalt substrate, the both sides up and down of the smalt substrate are provided with cushion, the cushion include magnesium fluoride film layer and
IR-Cut IR-cut film layers, infrared section of the IR-Cut are provided with the top of five oxidation Tritanium/Trititanium film layers, the top cushion
Only film layer include high-index material film and low-index material film, the top of the IR-Cut IR-cuts film layer and
The bottom of cushion described in bottom is provided with AR diaphragms.
It is preferred that, the high-index material film is titanium oxide film layer.
It is preferred that, the low-index material film is silica coating.
It is preferred that, the IR-Cut IR-cuts film layer is provided with 25 layers.
It is preferred that, the coating film thickness of the cushion is 30nm.
Compared with prior art, the beneficial effects of the utility model are：The utility model can effectively amputate infrared spuious
Light, is not likely to produce imaging interference problem, and cushion makes smalt substrate and IR-Cut IR-cuts film layer and AR diaphragms fine
Combination, improve the binding ability between film layer, AR diaphragms are protected cushion and IR-Cut IR-cut film layers,
The absorption of IR-Cut IR-cut film layers ends the effect of infrared waves to reach, smalt optical filter can be solved at big angle
To infrared light wavelength shift during degree incidence, and the secondary imaging of traditional Red lightscreening plate reflected light can be avoided, make image
Color is softer, natural.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
In figure：1 smalt substrate, 2 cushions, 21 magnesium fluoride film layers, 22 5 oxidation Tritanium/Trititanium film layers, infrared section of 3IR-Cut
Only film layer, 31 high-index material films, 32 low-index material films, 4AR diaphragms.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Referring to Fig. 1, the utility model provides a kind of technical scheme：A kind of low reflection smalt optical filter, including blue glass
Glass substrate 1, the both sides up and down of smalt substrate 1 are provided with cushion 2, and cushion 2 is aoxidized including magnesium fluoride film layer 21 and five
Tritanium/Trititanium film layer 22, the top of top buffer layer 2 is provided with IR-Cut IR-cuts film layer 3, and IR-Cut IR-cuts film layer 3 includes
High-index material film 31 and low-index material film 32, the top of IR-Cut IR-cuts film layer 3 and bottom buffering
The bottom of layer 2 is provided with AR diaphragms 4.
Wherein, high-index material film 31 is titanium oxide film layer, and low-index material film 32 is silicon dioxide film
Layer, IR-Cut IR-cuts film layer 3 is provided with 25 layers, and IR-Cut IR-cuts film layer 3 is in visible range sensitive band, and it is average saturating
Rate is crossed more than 92%, and in infrared band, its overall transmitance is less than 0.5%, the coating film thickness of cushion 2 is 30nm, is delayed
Rushing layer 2 makes smalt substrate 1 be combined well with IR-Cut IR-cuts film layer 3 and AR diaphragms 4, improves the knot between film layer
Conjunction ability.
Operation principle：The utility model is used as carrier by smalt substrate 1, and smalt substrate 1 itself also has certain
Infrared waves absorption, IR-Cut IR-cuts film layer 3 include high-index material film 31 and low-index material film
32, high-index material film 31 is titanium oxide film layer, and low-index material film 32 is silica coating, and IR-Cut is red
Outer cut-off film layer 3 is in visible range sensitive band, and its mean transmissivity is more than 92%, and in infrared band, its overall transmitance
The effect of cut-off infrared waves is reached less than the absorption of 0.5%, IR-Cut IR-cuts film layer 3, smalt optical filter can
To solve in large angle incidence to infrared light wavelength shift, it is to avoid the secondary imaging of traditional Red lightscreening plate reflected light, delay
Rushing layer 2 includes the oxidation of magnesium fluoride film layer 21 and five Tritanium/Trititanium film layer 22, make smalt substrate 1 and IR-Cut IR-cuts film layer 3 and
AR diaphragms 4 are combined well, improve the binding ability between film layer, AR diaphragms 4 are to cushion 2 and IR-Cut IR-cuts
Film layer 3 is protected.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out in the case where not departing from principle of the present utility model and spirit a variety of changes, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of low reflection smalt optical filter, including smalt substrate (1), it is characterised in that：The smalt substrate (1)
Both sides are provided with cushion (2) up and down, and the cushion (2) includes magnesium fluoride film layer (21) and five oxidation Tritanium/Trititanium film layers
(22) IR-Cut IR-cuts film layer (3), the IR-Cut infrared cut coatings, are provided with the top of the top cushion (2)
Layer (3) includes high-index material film (31) and low-index material film (32), the IR-Cut IR-cuts film layer (3)
Top and bottom described in the bottom of cushion (2) be provided with AR diaphragms (4).
2. the low reflection smalt optical filter of one kind according to claim 1, it is characterised in that：The high-index material is thin
Film (31) is titanium oxide film layer.
3. the low reflection smalt optical filter of one kind according to claim 1, it is characterised in that：The low-index material is thin
Film (32) is silica coating.
4. the low reflection smalt optical filter of one kind according to claim 1, it is characterised in that：The IR-Cut IR-cuts
Film layer (3) is provided with 25 layers.
5. the low reflection smalt optical filter of one kind according to claim 1, it is characterised in that：The plating of the cushion (2)
Film thickness is 30nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720026991.XU CN206523651U (en) | 2017-01-11 | 2017-01-11 | A kind of low reflection smalt optical filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720026991.XU CN206523651U (en) | 2017-01-11 | 2017-01-11 | A kind of low reflection smalt optical filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206523651U true CN206523651U (en) | 2017-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720026991.XU Active CN206523651U (en) | 2017-01-11 | 2017-01-11 | A kind of low reflection smalt optical filter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761613A (en) * | 2018-08-01 | 2018-11-06 | 湖北五方光电股份有限公司 | A kind of low infrared transmittivity cutoff filter and preparation method thereof |
| CN108802883A (en) * | 2018-06-06 | 2018-11-13 | 湖北五方光电股份有限公司 | A kind of technology of preparing of low reflection cutoff filter |
| CN114019599A (en) * | 2021-10-29 | 2022-02-08 | 浙江京浜光电科技有限公司 | Low-stress blue glass infrared cut-off filter and production method thereof |
| CN116705887A (en) * | 2023-05-29 | 2023-09-05 | 中航凯迈(上海)红外科技有限公司 | Absorption film for infrared detector and preparation method thereof |
-
2017
- 2017-01-11 CN CN201720026991.XU patent/CN206523651U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802883A (en) * | 2018-06-06 | 2018-11-13 | 湖北五方光电股份有限公司 | A kind of technology of preparing of low reflection cutoff filter |
| CN108761613A (en) * | 2018-08-01 | 2018-11-06 | 湖北五方光电股份有限公司 | A kind of low infrared transmittivity cutoff filter and preparation method thereof |
| CN114019599A (en) * | 2021-10-29 | 2022-02-08 | 浙江京浜光电科技有限公司 | Low-stress blue glass infrared cut-off filter and production method thereof |
| CN116705887A (en) * | 2023-05-29 | 2023-09-05 | 中航凯迈(上海)红外科技有限公司 | Absorption film for infrared detector and preparation method thereof |
| CN116705887B (en) * | 2023-05-29 | 2024-03-12 | 中航凯迈(上海)红外科技有限公司 | Absorption film for infrared detector and preparation method thereof |
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Address after: 434020 No. 55, Shenzhen Avenue, Jingzhou, Hubei Patentee after: Hubei five party Au Optronics Co Address before: 434020 No. 55, Shenzhen Avenue, Jingzhou, Hubei Patentee before: HUBEI W-OLF PHOTOELECTRIC TECHNOLOGY CO., LTD. |