JPS61132750U - - Google Patents
Info
- Publication number
- JPS61132750U JPS61132750U JP1683385U JP1683385U JPS61132750U JP S61132750 U JPS61132750 U JP S61132750U JP 1683385 U JP1683385 U JP 1683385U JP 1683385 U JP1683385 U JP 1683385U JP S61132750 U JPS61132750 U JP S61132750U
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric element
- detection device
- light
- rotation detection
- analyzer
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Transform (AREA)
Description
第1図はこの考案の一実施例による回転検出装
置を示す構成図、第2図はこの考案の他の実施例
を示す回転検出装置の構成図、第3図は従来の回
転検出装置を示す構成図である。図において、1
は回転軸、22は歯車(回転体)、23は圧電素
子部、16は光変調器、5は容器である。なお各
図中、同一符号は同一、または相当部分を示す。
Fig. 1 is a block diagram showing a rotation detection device according to one embodiment of this invention, Fig. 2 is a block diagram of a rotation detection device showing another embodiment of this invention, and Fig. 3 shows a conventional rotation detection device. FIG. In the figure, 1
22 is a rotating shaft, 22 is a gear (rotating body), 23 is a piezoelectric element section, 16 is an optical modulator, and 5 is a container. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
る回転体、この回転体の少なくとも1個の上記歯
部と接触し電圧を発生する圧電素子、この圧電素
子の出力で光を変調し、上記光の導入部と導出部
を有する光変調器、この光変調器と上記圧電素子
部とを収容した容器を備えた回転検出装置。 (2) 実用新案登録請求の範囲第1項において、
光変調器は光の導入及び導出用の一対のレンズと
、上記導入用レンズと対向した偏光子と、上記導
出用レンズと対向した検光子と、この検光子と上
記偏光子との間に配置されたポツケルス素子と、
このポツケルス素子と上記検光子あるいは偏光子
との間に配置された1/4波長板とで構成された
回転検出装置。 (3) 実用新案登録請求の範囲第2項において、
ポツケルス素子が圧電素子を兼ねた回転検出装置
。[Claims for Utility Model Registration] (1) A rotating body that is mounted on a rotating shaft and has a predetermined number of teeth, a piezoelectric element that comes into contact with at least one of the teeth of this rotating body and generates a voltage, and A rotation detection device comprising: an optical modulator that modulates light with the output of a piezoelectric element and has a light introduction section and a light output section; and a container housing the optical modulator and the piezoelectric element section. (2) In paragraph 1 of the claims for utility model registration,
The optical modulator includes a pair of lenses for introducing and deriving light, a polarizer facing the introduction lens, an analyzer facing the deriving lens, and disposed between the analyzer and the polarizer. The Pockels element is
A rotation detection device comprising this Pockels element and a quarter wavelength plate placed between the analyzer or polarizer. (3) In paragraph 2 of the claims for utility model registration,
A rotation detection device in which a Pockels element also serves as a piezoelectric element.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1683385U JPS61132750U (en) | 1985-02-07 | 1985-02-07 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1683385U JPS61132750U (en) | 1985-02-07 | 1985-02-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61132750U true JPS61132750U (en) | 1986-08-19 |
Family
ID=30503972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1683385U Pending JPS61132750U (en) | 1985-02-07 | 1985-02-07 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61132750U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2013080840A1 (en) * | 2011-11-30 | 2015-04-27 | 株式会社村田製作所 | Door open / close detection device |
-
1985
- 1985-02-07 JP JP1683385U patent/JPS61132750U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2013080840A1 (en) * | 2011-11-30 | 2015-04-27 | 株式会社村田製作所 | Door open / close detection device |
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