| 摘要 |
PURPOSE:To make the signal outputs along with the changing-over of optical elements equal and make continuous recording possible by automatically correcting the output differences at the changing-over of the optical elements. CONSTITUTION:Light from a light source 1 is divied to sample luminous flux 2 and reference luminous flux 3. After these have passed the sample 4 and comb 5, they are divided by a grating 7 by way of a chopper 6 and enter a detector 8. The output from a potentiometer 11 before changing-over of the grating 7 is fetched through a sampling circuit 15 and is stored in a memory and comparing arithmetic circuit 16. Next, at the time when the grating is changed over to 7', the output from the potentiometer 11 is again supplied to the circuit 16. The voltage corresponding to the difference of these signals before and after the changing-over is generated at 17 and is applied to the potentiometer 11. As a result of this, the signal entering the X-axis of a recorder 12 becomes equal before and after the changing-over of the grating. |
