Optical method of measuring angular displacement using four photodiode arrays.
A method of measuring angular displacement is investigated that uses two pairs of photodiode arrays arranged in a square and crossed linear images produced with two cylindrical mirrors. According to this method the measurement error can be greatly reduced even when inclination of the rotation axis exists.
Sato
K
K
Utsunomiya University, Faculty of Engineering, Utsunomiya 321, Japan.
Yamamoto
S
S
Kamada
O
O
Ochi
M
M