JPH0363101U - - Google Patents
Info
- Publication number
- JPH0363101U JPH0363101U JP12496489U JP12496489U JPH0363101U JP H0363101 U JPH0363101 U JP H0363101U JP 12496489 U JP12496489 U JP 12496489U JP 12496489 U JP12496489 U JP 12496489U JP H0363101 U JPH0363101 U JP H0363101U
- Authority
- JP
- Japan
- Prior art keywords
- film
- polarizing film
- parallel plate
- isosceles triangular
- angled isosceles
- 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.)
- Granted
Links
- 239000012780 transparent material Substances 0.000 claims 3
Description
第１図は本考案の一実施例にかかる偏光ビーム
スプリツタ１を示す側面図、第２図は第１図に示
すＥ部分の拡大図、第３図は従来の偏光ビームス
プリツタ１１０，１３０と本実施例の偏光ビーム
スプリツタ１を比較して示す図、第４図は従来の
偏光ビームスプリツタ５００を示す斜視図、第５
図は第１の偏光膜１５と第２の偏光膜１９によつ
て反射されるＳ波成分の状態を示す図、第６図は
本考案にかかる偏光ビームスプリツタの第２の実
施例を示す側面図である。
図中、１，１′……偏光ビームスプリツタ、１
１，１３……直角二等辺三角プリズム、１５……
第１の偏光膜、１７……平行平板（第１の平行平
板）、１９……第２の偏光膜、２１……第３の偏
光膜、２３……第２の平行平板、である。
FIG. 1 is a side view showing a polarizing beam splitter 1 according to an embodiment of the present invention, FIG. 2 is an enlarged view of portion E shown in FIG. 1, and FIG. 3 is a conventional polarizing beam splitter 110, 130. 4 is a perspective view showing a conventional polarizing beam splitter 500, and FIG. 5 is a perspective view showing a conventional polarizing beam splitter 500.
The figure shows the state of the S-wave component reflected by the first polarizing film 15 and the second polarizing film 19, and FIG. 6 shows a second embodiment of the polarizing beam splitter according to the present invention. FIG. In the figure, 1, 1'...Polarizing beam splitter, 1
1,13...Right-angled isosceles triangular prism, 15...
First polarizing film, 17... Parallel plate (first parallel plate), 19... Second polarizing film, 21... Third polarizing film, 23... Second parallel plate.
Claims (1)
なくとも誘電体の多層膜からなる第１の偏光膜と
、透明な材料からなる平行平板と、誘電体の多層
膜からなる第２の偏光膜をこの順番で介在せしめ
てこれらを一体化するとともに、前記平行平板の
厚みｄを、 ｄ＝ｍλ√２（２ｎ１−ｎ２） 但し、ｎ１：平行平板の屈折率 ｎ２：直角二等辺三角プリズムの屈折率 λ：入射光の波長 ｍ：整数 としたことを特徴とする偏光ビームスプリツタ
。 (2) ２つの直角二等辺三角プリズムの間に、誘
電体の多層膜からなる第１の偏光膜と、透明な材
料からなる第１の平行平板と、誘電体の多層膜か
らなる第２の偏光膜と、透明な材料からなる第２
の平行平板と、誘電体の多層膜からなる第３の偏
光膜とをこの順番で介在せしめてこれらを一体化
するとともに、前記第１と第２の平行平板の厚み
ｄをそれぞれ、 ｄ＝ｍλ√２（２ｎ１−ｎ２） 但し、ｎ１：平行平板の屈折率 ｎ２：直角二等辺三角プリズムの屈折率 λ：入射光の波長 ｍ：整数 としたことを特徴とする偏光ビームスプリツタ
。[Claims for Utility Model Registration] (1) Between two right-angled isosceles triangular prisms, a first polarizing film made of at least a multilayer dielectric film, a parallel plate made of a transparent material, and a multilayer dielectric film. A second polarizing film consisting of a film is interposed in this order to integrate them, and the thickness d of the parallel plate is d=mλ√2(2n 1 - n 2 ), where n 1 is the thickness of the parallel plate. A polarizing beam splitter characterized in that n 2 is a refractive index of a right-angled isosceles triangular prism, λ is a wavelength of incident light, and m is an integer. (2) Between the two right-angled isosceles triangular prisms, there is a first polarizing film made of a dielectric multilayer film, a first parallel plate made of a transparent material, and a second polarizing film made of a dielectric multilayer film. A polarizing film and a second layer made of a transparent material.
A parallel flat plate and a third polarizing film made of a dielectric multilayer film are interposed in this order to integrate them, and the thicknesses d of the first and second parallel plates are set as follows: d=mλ √2 (2n 1 - n 2 ) where n 1 is the refractive index of the parallel plate, n 2 is the refractive index of the right-angled isosceles triangular prism, λ is the wavelength of the incident light, and m is an integer. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989124964U JP2518137Y2 (en) | 1989-10-24 | 1989-10-24 | Polarizing beam splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989124964U JP2518137Y2 (en) | 1989-10-24 | 1989-10-24 | Polarizing beam splitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0363101U true JPH0363101U (en) | 1991-06-20 |
| JP2518137Y2 JP2518137Y2 (en) | 1996-11-20 |
Family
ID=31672857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989124964U Expired - Fee Related JP2518137Y2 (en) | 1989-10-24 | 1989-10-24 | Polarizing beam splitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2518137Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023920A1 (en) * | 1999-09-29 | 2001-04-05 | Fujitsu General Limited | Polarized light spectroscopic device and picture projector comprising the polarized light spectroscopic device |
| CN104280810A (en) * | 2014-09-30 | 2015-01-14 | 京东方科技集团股份有限公司 | Polarizer and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59216110A (en) * | 1983-05-25 | 1984-12-06 | Hoya Corp | Polarized beam splitter |
| JPS61141402A (en) * | 1984-12-14 | 1986-06-28 | Fujitsu Ltd | Polarized light separating film |
-
1989
- 1989-10-24 JP JP1989124964U patent/JP2518137Y2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59216110A (en) * | 1983-05-25 | 1984-12-06 | Hoya Corp | Polarized beam splitter |
| JPS61141402A (en) * | 1984-12-14 | 1986-06-28 | Fujitsu Ltd | Polarized light separating film |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023920A1 (en) * | 1999-09-29 | 2001-04-05 | Fujitsu General Limited | Polarized light spectroscopic device and picture projector comprising the polarized light spectroscopic device |
| CN104280810A (en) * | 2014-09-30 | 2015-01-14 | 京东方科技集团股份有限公司 | Polarizer and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2518137Y2 (en) | 1996-11-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |