| 摘要 |
FIELD: optical detection and ranging. SUBSTANCE: photoelectric photometer uses successively arranged and optically communicating objective lens, shutter, twin lens stop, modulator, modulator position pickup, lens, photomultiplier tube, as well as an amplifier, discriminator, resolving time holding circuit, first and second AND gates, first and second pulse counters, first and second registers, pulse shaper, first and second delay circuits, trigger flip-flop, comparator, switch, subtraction circuit, recorder. The specific feature of the offered device is the provision of an additional information pulse recording circuit comprising the resolving time holding circuit (non-extending type), second AND gate and second pulse counter. At a low intensity of the recorder light flux measuring information is formed by the main recording channel, and at an increase of intensity of optical radiation - by the additional circuit, which decreases the non-linearity of the photometer light characteristic. EFFECT: enhanced accuracy of recording of light background radiation. |
