JPS6293779U - - Google Patents
Info
- Publication number
- JPS6293779U JPS6293779U JP18613785U JP18613785U JPS6293779U JP S6293779 U JPS6293779 U JP S6293779U JP 18613785 U JP18613785 U JP 18613785U JP 18613785 U JP18613785 U JP 18613785U JP S6293779 U JPS6293779 U JP S6293779U
- Authority
- JP
- Japan
- Prior art keywords
- light
- polarization
- beam splitter
- optical fiber
- polarizing beam
- 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
- 230000010287 polarization Effects 0.000 claims description 7
- 239000013307 optical fiber Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims 2
- 239000000835 fiber Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
第１図は本考案の一実施例を示す概念図、第２
図は第１図に示す物体有無検出器の原理図、第３
図は第１図に示す偏波面保存光フアイバの断面図
、第４図は従来の一例を示す断面図、第５図は第
４図に示す光フアイバの断面図である。
１……光源、２……しや光ケース、３……偏波
面保存フアイバ、４……集光性ロツドレンズ、５
……フオトセンサ、６……フアイバ、７……偏光
ビーム・スプリツタ、８……λ／４波長板、９…
…シース、１０……入出力フアイバ、１１……入
力フアイバ、１２……出力フアイバ、ａ……出力
光、ｂ……入力光。
Fig. 1 is a conceptual diagram showing one embodiment of the present invention;
The figure is the principle diagram of the object presence/absence detector shown in Figure 1, and
The figures are a sectional view of the polarization maintaining optical fiber shown in FIG. 1, FIG. 4 is a sectional view of a conventional example, and FIG. 5 is a sectional view of the optical fiber shown in FIG. 4. 1... Light source, 2... Shiny light case, 3... Polarization preserving fiber, 4... Light condensing rod lens, 5
...Photo sensor, 6...Fiber, 7...Polarizing beam splitter, 8...λ/4 wavelength plate, 9...
... sheath, 10 ... input/output fiber, 11 ... input fiber, 12 ... output fiber, a ... output light, b ... input light.
Claims (1)
入力光として通す偏波面保存光フアイバと、単一
偏光面を有する光を発生する光源と、前記光源と
前記偏波面保存光フアイバを結ぶ光軸に対し４５
°の傾きを有し光軸上に位置する偏光ビームスプ
リツタと、前記偏波面保存光フアイバと、前記偏
光ビーム・スプリツタの間に位置し前記偏光ビー
ム・スプリツタからの出力光の偏光面および出力
光と相反した方向の入力光の偏光面を４５°回転
させるλ／４波長板と、前記偏波面保存光フアイ
バと前記λ／４波長板の間に位置する集光性ロツ
ドレンズと、光軸に垂直かつ前記偏光ビーム・ス
プリツタに相むかつて位置するフオトセンサとを
含むことを特徴とする物体有無検出器。 a polarization-maintaining optical fiber that passes output light hitting an object and reflected light from the object as input light; a light source that generates light having a single polarization plane; and an optical axis connecting the light source and the polarization-maintaining optical fiber. Against 45
a polarizing beam splitter located on the optical axis with an inclination of °; a polarization plane of the output light from the polarizing beam splitter and an output power located between the polarization preserving optical fiber and the polarizing beam splitter; a λ/4 wavelength plate that rotates the polarization plane of input light in a direction opposite to the light by 45°; a condensing rod lens located between the polarization preserving optical fiber and the λ/4 wavelength plate; and a photo sensor located opposite the polarizing beam splitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18613785U JPH0333026Y2 (en) | 1985-12-02 | 1985-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18613785U JPH0333026Y2 (en) | 1985-12-02 | 1985-12-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6293779U true JPS6293779U (en) | 1987-06-15 |
| JPH0333026Y2 JPH0333026Y2 (en) | 1991-07-12 |
Family
ID=31135416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18613785U Expired JPH0333026Y2 (en) | 1985-12-02 | 1985-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0333026Y2 (en) |
-
1985
- 1985-12-02 JP JP18613785U patent/JPH0333026Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0333026Y2 (en) | 1991-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6293779U (en) | ||
| JPS61104574U (en) | ||
| JPH0426337U (en) | ||
| JPS6159368U (en) | ||
| JPS62172166U (en) | ||
| JPH022671U (en) | ||
| JPH036529U (en) | ||
| JPH0310271U (en) | ||
| JPH0281408U (en) | ||
| JPH03113150U (en) | ||
| YOSHIKAZU et al. | Optical information processing device | |
| JPS61162380U (en) | ||
| JPH0171715U (en) | ||
| JPS6362710U (en) | ||
| JPS6443310U (en) | ||
| SHUSUKE et al. | Semiconductor laser array device | |
| JPS62156839U (en) | ||
| JPH0257024U (en) | ||
| JPH0210510U (en) | ||
| JPS62145108U (en) | ||
| JPH0453507U (en) | ||
| JPH0195648U (en) | ||
| JPS62127523U (en) | ||
| JPS63137965U (en) | ||
| JPS63177710U (en) |