| 摘要 |
FIELD: physics, measurements. ^ SUBSTANCE: invention relates to instrument making, particularly, to measurement of transmissivity of glass, primarily, spectrally non-selective produced according to specs of GOST 5727-88. The proposed device incorporates a radiation source, operating and reference channels arranged along the light beam, radiation receiver and mirror modulator-commutator. The device comprises optical signal transceiver combining the said reference and operating channels made up of a flat mirror and the said mirror modulator-commutator representing a disk shutter with the 180° opening angle and arranged at 90° to the optical axis whereon the receiver and radiation source are located. To radiation receiver are consecutively connected the following components, i.e. bandpass filter, photoelectric current amplifier, amplification automatic adjustment unit made up of amplitude detector with its common point connected to the supply positive bus, amplitude detector with its common point connected to the supply negative bus and photon-coupled pair connected parallel to the photoelectric current amplifier resistor. ^ EFFECT: simpler design, reduced influence of multiplicative error component on measurement results. ^ 2 dwg |
