JPH0255360U

JPH0255360U -

Info

Publication number: JPH0255360U
Application number: JP13130288U
Authority: JP
Priority date: 1988-10-06
Filing date: 1988-10-06
Publication date: 1990-04-20

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す斜視図、第２
図および第３図は実施例における読取装置を示す
構成図、第４図は実施例の基本的な作用を示す説
明図である。１０…読取装置、１２…レーザ発光部、１４…
レーザ受光部、１６…検査対象、Ｍ，ＭＡ，ＭＢ
，Ｍ１，Ｍ２…マーク。 Fig. 1 is a perspective view showing one embodiment of the present invention;
3 and 3 are configuration diagrams showing the reading device in the embodiment, and FIG. 4 is an explanatory diagram showing the basic operation of the embodiment. 10...Reading device, 12...Laser emitting unit, 14...
Laser receiving section, 16...Inspection object, M, MA, MB
, M1, M2...marks.

Claims

[Claims for Utility Model Registration] (1) In an optical mark that is constituted by a large number of linear uneven shapes and whose detection is performed by optical means, a first mark whose linear uneven shapes are formed in a first direction; 1. An optical mark comprising a first mark and a second mark whose linear uneven shape is formed in a second direction different from the first direction. (2) In a reading device that reads an optical mark composed of a large number of linear uneven shapes, a first mark in which the linear uneven shapes are formed in a first direction, and a first mark in which the linear uneven shapes are formed in a first direction. and a second mark formed in a second direction different from the direction of the irradiation means for irradiating light onto the optical marks, and a light receiving unit for detecting return light from the optical marks from a fixed direction. A reading device comprising: means.