CN208026897U - Polarization splitting prism - Google Patents
Polarization splitting prism Download PDFInfo
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- CN208026897U CN208026897U CN201820286739.7U CN201820286739U CN208026897U CN 208026897 U CN208026897 U CN 208026897U CN 201820286739 U CN201820286739 U CN 201820286739U CN 208026897 U CN208026897 U CN 208026897U
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- prism
- polarization
- polarization splitting
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- film layer
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Abstract
The utility model discloses a kind of polarization splitting prism comprising triangular prism is installed in the rhombic prism of triangular prism opposite side.Because being provided with the polarization spectro film layer structure with scantling for increasing polarization and being in charge of between the triangular prism and rhombic prism.When installation, the polarization spectro film layer structure is mounted between triangular prism and rhombic prism, after glued, enables to the whole polarization splitting prism that can bear great laser power, and possess 1000:1 extinction ratio, the optical dispersive bandwidth of 400nm or more improve extinction ratio to improve laser power, improve optical dispersive bandwidth.
Description
【Technical field】
The utility model is related to a kind of polarization splitting prisms in terms of optical communication field.
【Background technology】
Polarization splitting prism is then to compose one by being coated with multi-layer film structure on certain inclined-plane of right-angle prism and stand
Cube, using light with P polarization light transmission when Brewster angle incidence for 1, and S-polarization light transmission is less than 1 property,
After light is with Brewster angle multipass multi-layer film structure, reach the P-polarization component that makes completely through and overwhelming majority S
Polarized component reflects an optical element of (at least 90% or more).Polarization splitting prism is a kind of a branch of incident light to be divided into biography
Broadcast the optical element of the mutually perpendicular two-beam in direction.But, the two-beam that by it is separated different from general optical beam splitting element
Between have special relationship, i.e.,：They are all linearly polarized lights, and polarization direction is orthogonal.Polarization splitting prism can be used as
Partially, the occasions such as analyzing, light intensity regulating.Using also very extensive on projecting apparatus.But the polarization point that conventional 45 ° of prism methods generate
Small only 20nm or so of bandwidth of light, and the transmitance of two important indicator P components of polarization splitting prism, S components is anti-
Very high standard cannot be reached by penetrating the indexs such as rate and the extinction ratio of SP components.
【Utility model content】
The technical purpose of the utility model be in order to solve the above-mentioned problems of the prior art and provide it is a kind of have carry
High laser power improves extinction ratio, improves the polarization splitting prism of optical dispersive bandwidth.
In order to realize that above-mentioned technical problem, the utility model provide a kind of polarization splitting prism comprising triangular prism,
It is installed in the rhombic prism of triangular prism opposite side, increase polarization is provided between the triangular prism and rhombic prism
The polarization spectro film layer structure with scantling being in charge of.
According to the technical characteristics, the polarization spectro film layer structure is by TiO2 substances and SiO2 substance phase alternating layers
What the folded light film layer for forming loop distribution was constituted.
According to the technical characteristics, the interior angle of the triangular prism is respectively 90 degree, 55 degree, 35 degree.
According to the technical characteristics, the interior angle of the rhombic prism is respectively 55 degree, 125 degree.
According to the technical characteristics, the structure of H-K50 glass materials is respectively adopted in the triangular prism or rhombic prism
At.
The beneficial effects of the utility model：It is in charge of because being provided with to increase to polarize between the triangular prism and rhombic prism
The polarization spectro film layer structure with scantling.When installation, by the polarization spectro film layer structure mounted on triangular prism and tiltedly
Between square glass prism, after glued, enable to the whole polarization splitting prism that can bear great laser power, and possess
1000:1 extinction ratio, the optical dispersive bandwidth of 400nm or more improve extinction ratio to improve laser power, improve optical dispersive bandwidth.
With reference to the accompanying drawings and examples, the technical solution of the utility model is described in further detail.
【Description of the drawings】
Fig. 1 is the stereogram of the utility model intermediate cam prism；
Fig. 2 is the stereogram of rhombic prism in the utility model；
Fig. 3 is the schematic diagram that the utility model intermediate cam prism is combined with rhombic prism；
Fig. 4 is the stereogram that the utility model intermediate cam prism is combined with rhombic prism；
Fig. 5 is the stereogram of polarization splitting prism embodiment 1 in the utility model；
Fig. 6 is the stereogram of polarization splitting prism embodiment 2 in the utility model；
【Specific implementation mode】
In order to make those skilled in the art more fully understand the utility model scheme, below in conjunction with the accompanying drawings with embodiment to this
Utility model is described in further detail.
It please refers to Fig.1 to shown in Fig. 6, illustrates a kind of polarization splitting prism with reference to embodiment comprising triangular prism
1, rhombic prism 2, polarization spectro film layer structure 3.
The interior angle of the triangular prism 1 is respectively 90 degree, 55 degree, 35 degree.The interior angle of the rhombic prism 2 is respectively 55
Degree, 125 degree.The composition of H-K50 glass materials is respectively adopted in the triangular prism 1 or rhombic prism 2.The polarization spectro film layer
Structure 3 is to be layered on top of each other to form the light film layer of loop distribution and constitute by TiO2 substances and SiO2 substances.The polarization beam splitter
The number of plies of layer structure 3 is at least 10 layers.
Rhombic prism 2 is installed in 1 opposite side of triangular prism, and polarization spectro film layer structure 3 installs the triangular prism
Between mirror 1 and rhombic prism 2.After gluing, enable to the whole polarization splitting prism that can bear great laser work(
Rate, and possess 1000:1 extinction ratio, the optical dispersive bandwidth of 400nm or more.
Operation principle：The formula that Brewster angle is derivedWherein θGFor incident angle, nG
For prism material refractive index, nHFor TIO2 refractive index, nLFor SIO2 refractive index.Prism material, incident angle are calculated according to this formula
Determine that prism material H-K50, incident angle are 60 °.Pass through the polarization spectro film layer of this design TIO2 and SIO2 repeatedly stackings
Structure 3 can reach the above extinction ratio, the requirements such as optical dispersive bandwidth.
In conclusion because being provided with the band scantling for increasing polarization and being in charge of between the triangular prism 1 and rhombic prism 2
Polarization spectro film layer structure 3.When installation, the polarization spectro film layer structure 3 is mounted on triangular prism 1 and rhombic prism 2
Between, after glued, enable to the whole polarization splitting prism that can bear great laser power, and possess 1000:1
Extinction ratio, the optical dispersive bandwidth of 400nm or more improves extinction ratio to improve laser power, improves optical dispersive bandwidth.
Although depicting the invention by embodiment, it will be appreciated by the skilled addressee that the utility model has perhaps
Shape changeable and variation without departing from the utility model spirit, it is desirable to the attached claims include these deformation and change without
It is detached from the spirit of the utility model.
Claims (5)
1. a kind of polarization splitting prism comprising triangular prism is installed in the rhombic prism of triangular prism opposite side, special
Sign is：It is provided between the triangular prism and rhombic prism and increases the polarization spectro film layer with scantling that polarization is in charge of
Structure.
2. polarization splitting prism according to claim 1, it is characterised in that：The polarization spectro film layer structure is by TiO2
Substance is layered on top of each other the light film layer composition to form loop distribution with SiO2 substances.
3. polarization splitting prism according to claim 1, it is characterised in that：The interior angle of the triangular prism is respectively 90
Degree, 55 degree, 35 degree.
4. polarization splitting prism according to claim 1, it is characterised in that：The interior angle of the rhombic prism is respectively 55
Degree, 125 degree.
5. polarization splitting prism according to claim 1, it is characterised in that：The triangular prism or rhombic prism are adopted respectively
With the composition of H-K50 glass materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820286739.7U CN208026897U (en) | 2018-02-28 | 2018-02-28 | Polarization splitting prism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820286739.7U CN208026897U (en) | 2018-02-28 | 2018-02-28 | Polarization splitting prism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208026897U true CN208026897U (en) | 2018-10-30 |
Family
ID=63906141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820286739.7U Active CN208026897U (en) | 2018-02-28 | 2018-02-28 | Polarization splitting prism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208026897U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426858A (en) * | 2019-07-25 | 2019-11-08 | 福建海创光电有限公司 | A kind of high-power polarization splitting prism |
-
2018
- 2018-02-28 CN CN201820286739.7U patent/CN208026897U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426858A (en) * | 2019-07-25 | 2019-11-08 | 福建海创光电有限公司 | A kind of high-power polarization splitting prism |
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| 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: 518000, Shenzhen, Guangdong province Longgang District, Ping Street, fly Wright industrial plant No. 2 building, 1-4 floor Patentee after: Shenzhen Haichuang optics Co., Ltd Address before: 518000, Shenzhen, Guangdong province Longgang District, Ping Street, fly Wright industrial plant No. 2 building, 1-4 floor Patentee before: SHENZHEN FEILAITE TECHNOLOGY Co.,Ltd. |