CN202929298U - Device changing light into linearly polarized light without change in brightness - Google Patents
Device changing light into linearly polarized light without change in brightness Download PDFInfo
- Publication number
- CN202929298U CN202929298U CN 201220490229 CN201220490229U CN202929298U CN 202929298 U CN202929298 U CN 202929298U CN 201220490229 CN201220490229 CN 201220490229 CN 201220490229 U CN201220490229 U CN 201220490229U CN 202929298 U CN202929298 U CN 202929298U
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- CN
- China
- Prior art keywords
- light
- linearly polarized
- brightness
- change
- polarized light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a device changing a light into a linearly polarized light without change in brightness, composed of a light source, a uniaxial crystal, a phase delayer and a positive lens. Through a birefringence effect of the uniaxial crystal, a light emitted by the light source is divided into two beams whose polarized directions are mutually perpendicular, the phase of one beam is changed by the phase delayer, and the positive lens is used for gathering, thereby obtaining the linearly polarized light in the same brightness with the light source.
Description
Technical field
The utility model relates to optical devices, especially polarized-light technique.
Background technology
Linearly polarized light refers on the direction of propagation of light, the light that light vector only vibrates along a fixing direction.The light that ordinary light source sends mostly is the non-linear polarization light such as natural light.At present natural light is become the conventional method of linearly polarized light for utilizing linear polarizer.But utilizing linear polarizer that light is become linearly polarized light can make the linearly polarized light of outgoing and former light phase specific luminance reduce by more than 50 at least.
Summary of the invention
For overcoming the deficiency of linear polarizer, the utility model provides a kind of optical devices, and this device can make light become linearly polarized light and luminance brightness does not change.
The technical scheme that its technical matters that solves the utility model adopts is: place uniaxial crystal before light source, utilize the birefringence effect of uniaxial crystal to make the light of light source outgoing be divided into the orthogonal two-beam in polarization direction.Placing two vertical light in bundle polarization direction that phase delay device makes outgoing after uniaxial crystal, to become the polarization direction identical, and the positive lens after the recycling phase delay device converges the two identical light in bundle polarization direction.
The beneficial effects of the utility model are: can make the non-linear polarization light such as natural light become linearly polarized light when not reducing emergent light brightness.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Accompanying drawing is light path principle figure of the present utility model.
Embodiment
Place uniaxial crystal before light source, the optical axis of crystal in the principal section, there is angle in direction and incident ray.Due to the birefringence effect of uniaxial crystal, can be divided into the orthogonal two-beam in polarization direction after light is by uniaxial crystal.Place phase delay device after uniaxial crystal, make a branch of phase delay device that passes through in the orthogonal two-beam in polarization direction, the phase delay π of phase delay device to this Shu Guang, thus obtain the two identical two-beams in bundle polarization direction.Two-beam converges through positive lens afterwards, obtains the linearly polarized light identical with light-source brightness.
Claims (1)
1. one kind becomes with light the device that linearly polarized light and luminance brightness do not change, and it is characterized in that: light source, uniaxial crystal, phase delay device and positive lens are arranged sequentially successively, make natural light by after become linearly polarized light but brightness is compared without significant change with former light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220490229 CN202929298U (en) | 2012-09-25 | 2012-09-25 | Device changing light into linearly polarized light without change in brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220490229 CN202929298U (en) | 2012-09-25 | 2012-09-25 | Device changing light into linearly polarized light without change in brightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202929298U true CN202929298U (en) | 2013-05-08 |
Family
ID=48219243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220490229 Expired - Fee Related CN202929298U (en) | 2012-09-25 | 2012-09-25 | Device changing light into linearly polarized light without change in brightness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202929298U (en) |
-
2012
- 2012-09-25 CN CN 201220490229 patent/CN202929298U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Xie Xinyi Document name: Notification to Pay the Fees |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20150925 |
|
| EXPY | Termination of patent right or utility model |