演色性の良いストロボスコープ
1955 年 24 巻 9 号 p. 360-364
詳細
1955 年 24 巻 9 号 p. 360-364
A portable stroboscope which has a good colour rendition has been constructed. Two fluorescent lamps using Mg-tungstate (Argon gas 3.0mmHg and Mercury one drop) and a Neon-Argon lamp (total pressure 3.3mmHg, Argon percentage 20%) are operated synchroni-cally. Chief advantages of this stroboscope are considered as follows:-
(1) a good colour rendition is obtained.
(2) stable stroboscopic operation is available at the frequency range of 100c/m-15, 000c/m for a long time.
(3) only about 300 V d.c. source obtained by an ordinary eliminator is sufficient for the operating circuit.
(4) the apparatus is small enough to be portable (total weight 17Kg), but the light intensity is strong enough to take photographs in darkness (50 lux at the point 50cm distant when operated at 3, 000c/m).
(5) the life of the light source tubes is long.
