JPH01152212U

JPH01152212U -

Info

Publication number: JPH01152212U
Application number: JP5027788U
Authority: JP
Priority date: 1988-04-13
Filing date: 1988-04-13
Publication date: 1989-10-20

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例による光位置検出
装置の回路図、第２図は同上実施例の光位置検出
装置の動作説明図、第３図は従来の光位置検出装
置の回路図、第４図は従来の光位置検出装置の動
作説明図、第５図は光位置検出素子の構造を示す
断面図である。１……光位置検出素子、２……前置増幅回路、
３……整流加算回路、４……駆動電流制御回路、
５……間欠発光回路、６……駆動回路、７……発
光素子。なお、図中、同一符号は同一、または相
当部分を示す。 FIG. 1 is a circuit diagram of an optical position detecting device according to an embodiment of this invention, FIG. 2 is an explanatory diagram of the operation of the optical position detecting device of the same embodiment, and FIG. 3 is a circuit diagram of a conventional optical position detecting device. FIG. 4 is an explanatory diagram of the operation of a conventional optical position detection device, and FIG. 5 is a sectional view showing the structure of an optical position detection element. 1... Optical position detection element, 2... Preamplifier circuit,
3... Rectification addition circuit, 4... Drive current control circuit,
5... Intermittent light emitting circuit, 6... Drive circuit, 7... Light emitting element. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

補正昭６３．１１．２９図面の簡単な説明を次のように補正する。明細書中図面の簡単な説明欄を次のとおり補正
する。「第１図はこの考案の一実施例による光位置検
出装置の回路図、第２図は同上実施例の光位置検
出装置の動作説明図、第３図は従来の光位置検出
装置の回路図、第４図は従来の光位置検出装置の
動作説明図、第５図は光位置検出素子の構造を示
す断面図、第６図はこの考案の他の実施例による
光位置検出装置の回路図である。」Amendment November 29, 1981 The brief description of the drawing is amended as follows. The brief explanation column for the drawings in the specification is amended as follows. ``Figure 1 is a circuit diagram of an optical position detection device according to an embodiment of this invention, Figure 2 is an explanatory diagram of the operation of the optical position detection device of the same embodiment, and Figure 3 is a circuit diagram of a conventional optical position detection device. , FIG. 4 is an explanatory diagram of the operation of a conventional optical position detection device, FIG. 5 is a sectional view showing the structure of an optical position detection element, and FIG. 6 is a circuit diagram of an optical position detection device according to another embodiment of this invention. It is.”

Claims

[Scope of utility model registration request]

A light emitting element, a drive circuit that supplies a drive current to the light emitting element, an intermittent light emitting circuit that causes the light emitting element to emit light intermittently, and two or more light position signals that are irradiated with light from the light emitting element and that correspond to the irradiation position. an optical position detection element that outputs from the output terminal of the optical position detection element, a preamplification circuit that amplifies only the alternating current component of the optical position signal of each of the optical position detection elements, and rectification of at least one of the outputs of the preamplification circuit. a rectifying circuit that outputs the optical position signal as one optical position output; a rectifying and adding circuit that rectifies the sum of alternating current components of the optical position signal;
An optical position detection device comprising: a drive current control circuit that controls the drive current of the drive circuit so that the output of the rectification and addition circuit is a constant value.