CN211956049U - Optical shutter device based on optical rotation effect - Google Patents
Optical shutter device based on optical rotation effect Download PDFInfo
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- CN211956049U CN211956049U CN202020962434.0U CN202020962434U CN211956049U CN 211956049 U CN211956049 U CN 211956049U CN 202020962434 U CN202020962434 U CN 202020962434U CN 211956049 U CN211956049 U CN 211956049U
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Abstract
The optical shutter device based on the optical rotation effect comprises an optical rotation crystal, wherein an electromagnet is arranged on the outer side of the optical rotation crystal, an electrode is arranged on the electromagnet, a polarizer is arranged on the light inlet side of the optical rotation crystal, an analyzer is arranged on the light outlet side of the optical rotation crystal, and when voltage is applied to the electromagnet through the electrode, the polarization direction of light propagating in the optical rotation crystal rotates. The optical rotation effect principle based on the crystal is manufactured, the electromagnet is manufactured on the outer side of the crystal with the Faraday optical rotation effect, the magnetic field direction of the electromagnet is parallel to the light passing direction, the magnetic field around the crystal is rapidly changed by applying a variable high-frequency electric signal, the purpose of controlling optical rotation is achieved, the response time of the rapid optical shutter can be shortened to a nanosecond level, and the rapid optical shutter has high extinction ratio, wide wavelength application range, low insertion loss and high light damage resistance threshold value, and is long in service life, simple in structure, convenient to maintain and convenient to integrate in a laser system for use.
Description
The technical field is as follows:
the utility model relates to an optical shutter device based on optical rotation effect.
Background art:
with the development and application of high-speed imaging technology, the requirement on the response time of a fast optical shutter is higher and higher, and a conventional mechanical electronic shutter is limited by the movement mode because the shutter is of a mechanical structure, the shutter speed is limited, devices are easy to wear, and the conventional mechanical electronic shutter is inconvenient to integrate into a laser system or a laser holographic system because of the limitation of the working principle. The optical effect substance is not limited to some crystals, but also includes liquid materials such as sugar solution and turpentine, and although the liquid materials are low in price, the temperature stability and the motion stability are not good enough, and the optical effect substance is not easy to be put into practical use.
The utility model has the following contents:
the utility model discloses a remedy prior art not enough, provide the optical shutter device based on the optical rotation effect, based on the optical rotation effect principle preparation of crystal, it is suitable for wavelength range, extinction ratio, transmissivity, life isoparametric better to be convenient for integrate and use in laser system, solved the problem that exists among the prior art.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
the optical shutter device based on the optical rotation effect comprises an optical rotation crystal, wherein an electromagnet is arranged on the outer side of the optical rotation crystal, an electrode is arranged on the electromagnet, a polarizer is arranged on the light inlet side of the optical rotation crystal, an analyzer is arranged on the light outlet side of the optical rotation crystal, and when voltage is applied to the electromagnet through the electrode, the polarization direction of light propagating in the optical rotation crystal rotates.
The polarizer is used for changing the polarization state of incident light into a linear polarization state.
The optical effect of the optically active crystal is a Faraday optical effect or an electro-optical effect.
The above technical scheme is adopted in the utility model, following beneficial effect has:
the optical rotation effect principle based on the crystal is manufactured, the electromagnet is manufactured on the outer side of the crystal with the Faraday optical rotation effect, the magnetic field direction of the electromagnet is parallel to the light passing direction, the magnetic field around the crystal is rapidly changed by applying a variable high-frequency electric signal, the purpose of controlling optical rotation is achieved, the response time of the rapid optical shutter can be shortened to a nanosecond level, and the rapid optical shutter has high extinction ratio, wide wavelength application range, low insertion loss and high light damage resistance threshold value, and is long in service life, simple in structure, convenient to maintain and convenient to integrate in a laser system for use.
Description of the drawings:
fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
In the figure, 1, optically active crystal, 2, electrode, 3, polarizer, 4, analyzer, 5, electromagnet.
The specific implementation mode is as follows:
in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
Example 1:
as shown in fig. 1, the optical shutter device based on optical rotation effect includes an optical rotation crystal 1, an electromagnet 5 is disposed outside the optical rotation crystal 1, the electromagnet 5 is disposed with an electrode 2, a polarizer 3 is disposed on the light incident side of the optical rotation crystal 1, an analyzer 4 is disposed on the light emergent side of the optical rotation crystal 1, and when a voltage is applied to the electromagnet 5 through the electrode 2, the polarization direction of light propagating in the optical rotation crystal 1 rotates.
The polarizer 3 is used for changing the polarization state of the incident light into a linear polarization state, namely changing the incident light into linear polarization light. When the electrode 2 is applied with voltage, the polarization direction of light propagating in the optically active crystal 1 is consistent with the light passing direction of the analyzer 4 arranged behind the optically active crystal 1, and the light can pass through; when no voltage is applied to the electrode 2, the linear polarization direction of incident light passing through the optically active crystal 1 is perpendicular to the light passing direction of the analyzer 4 placed behind the optically active crystal 1, and the incident light cannot pass through.
The optical effect of the optically active crystal 1 is a combination of one or more of Faraday optical effect or electro-optical effect or other optical effects.
In the embodiment, the included angle between the optical axes of the polarizer 3 and the analyzer 4 is 90 degrees, when the electromagnet 5 and the electrode 2 thereof are not applied with voltage, the electromagnet 5 has no magnetic field, the incident light does not rotate through the optically active crystal 1, and the linear polarization direction of the incident light is vertical to the light passing direction of the analyzer 4 and can not pass through the optically active crystal; when the potential difference applied to the electromagnet 5 and the two ends of the electrode 2 is + V, the polarization direction of the light passing through the polarimetric crystal 1 is rotated by 90 degrees by the magnetic field generated by the potential difference, and the light passing direction of the light passing through the polarimetric crystal is consistent with the light passing direction of the analyzer 4 arranged behind the polarimetric crystal 1 and can pass through the polarimetric crystal. The purpose of switching light is achieved by changing the voltage values of the electromagnet and the two ends of the electrode.
Example 2:
as shown in FIG. 2, this example is compared with example 1 in two different energization modes using the Faraday rotation effect, and the rest is the same as example 1.
In the embodiment, the included angle between the optical axes of the polarizer 3 and the analyzer 4 is 45 degrees, the potential difference between the electromagnet 5 and the two ends of the electrode 2 is V only in the direction of the electric field, when the vector of the electric field is-V, the incident light is reversely rotated by 45 degrees through the optical rotation crystal 1, and the linear polarization direction of the incident light is vertical to the light passing direction of the analyzer 4 and can not pass through the optical rotation crystal; when the shutter is triggered, the electric field vector becomes + V, and the incident light is rotated forward by 45 degrees through the optically active crystal 1, which is rotated by 90 degrees in total with respect to the case where the electric field vector is-V, and the light passing direction of the analyzer 4 disposed behind the optically active crystal 1 is the same, and can pass through. The aim of switching light is achieved by changing the direction of the electric field, namely the magnetic field, and the amplitude of the required voltage is reduced by half.
The embodiment has no requirement on whether the system light is polarized light or not in use, and is suitable for various photographic systems or lasers.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (3)
1. Optical shutter device based on optical rotation effect, characterized in that: the polarization direction rotating device comprises an optical rotation crystal, wherein an electromagnet is arranged on the outer side of the optical rotation crystal, an electrode is arranged on the electromagnet, a polarizer is arranged on the light incidence side of the optical rotation crystal, an analyzer is arranged on the light emergence side of the optical rotation crystal, and when voltage is applied to the electromagnet through the electrode, the polarization direction of light propagating in the optical rotation crystal rotates.
2. The optical shutter device based on optical rotation effect according to claim 1, characterized in that: the polarizer is used for changing the polarization state of incident light into a linear polarization state.
3. The optical shutter device based on optical rotation effect according to claim 1, characterized in that: the optical effect of the optically active crystal is a Faraday optical effect or an electro-optical effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020962434.0U CN211956049U (en) | 2020-05-29 | 2020-05-29 | Optical shutter device based on optical rotation effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020962434.0U CN211956049U (en) | 2020-05-29 | 2020-05-29 | Optical shutter device based on optical rotation effect |
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| Publication Number | Publication Date |
|---|---|
| CN211956049U true CN211956049U (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020962434.0U Active CN211956049U (en) | 2020-05-29 | 2020-05-29 | Optical shutter device based on optical rotation effect |
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| CN (1) | CN211956049U (en) |
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2020
- 2020-05-29 CN CN202020962434.0U patent/CN211956049U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Optical shutter device based on optical rotation effect Effective date of registration: 20220127 Granted publication date: 20201117 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd. high tech branch Pledgor: JINAN JINGZHONG OPTOELECTRONICS TECHNOLOGY CO.,LTD. Registration number: Y2022980001156 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230111 Granted publication date: 20201117 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd. high tech branch Pledgor: JINAN JINGZHONG OPTOELECTRONICS TECHNOLOGY CO.,LTD. Registration number: Y2022980001156 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Optical shutter device based on optical rotation effect Effective date of registration: 20230129 Granted publication date: 20201117 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd. high tech branch Pledgor: JINAN JINGZHONG OPTOELECTRONICS TECHNOLOGY CO.,LTD. Registration number: Y2023980031737 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |