JPH0236143U - - Google Patents
Info
- Publication number
- JPH0236143U JPH0236143U JP11425688U JP11425688U JPH0236143U JP H0236143 U JPH0236143 U JP H0236143U JP 11425688 U JP11425688 U JP 11425688U JP 11425688 U JP11425688 U JP 11425688U JP H0236143 U JPH0236143 U JP H0236143U
- Authority
- JP
- Japan
- Prior art keywords
- light
- half mirror
- condensing optical
- optical system
- optical axis
- 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
- 230000003287 optical effect Effects 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図乃至第３図は本考案の一実施例を示すも
ので、第１図は検出状態で示す縦断面図、第２図
は作用を説明するための縦断面図であり、第３図
は実験時の構成を説明するための配置図である。
そして、第４図及び第５図は従来例を示す夫々第
１図及び第２図相当図である。
図中、２１は本体ケース、２３は窓部、２８は
投光用レンズ（第１の集光光学系）、２９はＬＥ
Ｄ（投光素子）、３０は受光用レンズ（第２の集
光光学系）、３１はフオトダイオード（受光素子
）、３２はハーフミラー、３４は保護カバー、３
５は被検出物体である。
1 to 3 show an embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional view showing the detection state, FIG. 2 is a vertical cross-sectional view for explaining the operation, and FIG. is a layout diagram for explaining the configuration during an experiment.
4 and 5 are views corresponding to FIG. 1 and FIG. 2, respectively, showing a conventional example. In the figure, 21 is the main body case, 23 is the window, 28 is the projection lens (first condensing optical system), and 29 is the LE
D (light emitting element), 30 is a light receiving lens (second condensing optical system), 31 is a photodiode (light receiving element), 32 is a half mirror, 34 is a protective cover, 3
5 is an object to be detected.
Claims (1)
の後段に位置されたハーフミラーを介して投光す
る投光素子と、この投光素子の光軸と交差した光
軸を有し前記被検出物体での反射光を前記ハーフ
ミラー及びこれの後段に位置された第２の集光光
学系を介して受光する受光素子と、少なくとも前
記第１及び第２の集光光学系並びにハーフミラー
を収納するように設けられ上記ハーフミラーに対
応した位置に投受光用の窓部を有する本体ケース
と、この本体ケースに前記窓部を覆うように設け
られた透光性ある板状保護カバーとを備え、前記
保護カバーは前記投光素子及び受光素子の各光軸
に対して傾斜した状態で配置されていることを特
徴とする反射形光電スイツチ。 a light projecting element that projects light onto an object to be detected through a first condensing optical system and a half mirror positioned after the first condensing optical system; and an optical axis intersecting the optical axis of the light projecting element; a light-receiving element that receives reflected light from the object to be detected via the half mirror and a second condensing optical system located after the half mirror; and at least the first and second condensing optical systems and the half mirror. a main body case that is provided to house the half mirror and has a window for transmitting and receiving light at a position corresponding to the half mirror, and a light-transmitting plate-shaped protective cover provided on the main body case to cover the window. A reflective photoelectric switch, characterized in that the protective cover is arranged in an inclined state with respect to each optical axis of the light emitting element and the light receiving element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11425688U JPH0236143U (en) | 1988-08-31 | 1988-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11425688U JPH0236143U (en) | 1988-08-31 | 1988-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0236143U true JPH0236143U (en) | 1990-03-08 |
Family
ID=31354838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11425688U Pending JPH0236143U (en) | 1988-08-31 | 1988-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0236143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005164649A (en) * | 2003-11-28 | 2005-06-23 | Sunx Ltd | Optical apparatus and photoelectric sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5226588B2 (en) * | 1973-10-31 | 1977-07-14 |
-
1988
- 1988-08-31 JP JP11425688U patent/JPH0236143U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5226588B2 (en) * | 1973-10-31 | 1977-07-14 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005164649A (en) * | 2003-11-28 | 2005-06-23 | Sunx Ltd | Optical apparatus and photoelectric sensor |
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