Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1995-12-21
1998-06-02
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
33702, 33706, 33707, H01J 314
Patent
active
057603928
ABSTRACT:
A scale, which is provided for use with a displacement sensor, has a high degree of freedom and is capable of being manufactured at a low cost. The scale includes a graduation section and a base board which is formed separately from the graduation section and which is bonded to the graduation section. By bonding a graduation section to a separate base board, a single graduation section can be used for scales of varying lengths. Sufficient rigidity is provided by bonding a separate base board to the graduation section.
REFERENCES:
patent: 4530157 (1985-07-01), Nelle
patent: 4549354 (1985-10-01), Affa et al.
patent: 5104225 (1992-04-01), Masreliez
patent: 5182867 (1993-02-01), Nelle
patent: 5408547 (1995-04-01), Lebby et al.
patent: 5500734 (1996-03-01), Spanner
patent: 5534693 (1996-07-01), Kondo et al.
patent: 5537210 (1996-07-01), Kaneda et al.
patent: 5574559 (1996-11-01), Kaneda et al.
Hisamoto Kenji
Kaneda Yasushi
Canon Kabushiki Kaisha
Pyo Kevin
Westin Edward P.
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