JPH0170111U - - Google Patents

Info

Publication number
JPH0170111U
JPH0170111U JP1987165184U JP16518487U JPH0170111U JP H0170111 U JPH0170111 U JP H0170111U JP 1987165184 U JP1987165184 U JP 1987165184U JP 16518487 U JP16518487 U JP 16518487U JP H0170111 U JPH0170111 U JP H0170111U
Authority
JP
Japan
Prior art keywords
conversion
transparent substrate
outputs
laser light
output
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
Application number
JP1987165184U
Other languages
English (en)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987165184U priority Critical patent/JPH0170111U/ja
Publication of JPH0170111U publication Critical patent/JPH0170111U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)

Description

【図面の簡単な説明】
第1図は本考案の原理を示す概略図、第2図は
その要部を示すブロツク図、第3図はその動作説
明に供する線図、第4図は従来例を示す断面図で
ある。 1……透明基板、3……レーザ光源、4……位
置センサ、5……処理回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 透明基板にレーザ光を照射するレーザ光源と、
    この反射光を検出する複数の光電変換素子と、上
    記光電変換素子の変換出力を直列データに変換す
    る手段と、上記直列データと可変の基準電圧とを
    比較して、上記各変換出力のうち出力レベルが上
    位の2つの変換出力を得る手段と、該2つの変換
    出力の発生時刻の差異を検出する手段とを有する
    ことを特徴とする透明基板の平行度測定装置。
JP1987165184U 1987-10-28 1987-10-28 Pending JPH0170111U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987165184U JPH0170111U (ja) 1987-10-28 1987-10-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987165184U JPH0170111U (ja) 1987-10-28 1987-10-28

Publications (1)

Publication Number Publication Date
JPH0170111U true JPH0170111U (ja) 1989-05-10

Family

ID=31451441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987165184U Pending JPH0170111U (ja) 1987-10-28 1987-10-28

Country Status (1)

Country Link
JP (1) JPH0170111U (ja)

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