Photometry Electrical Circuits TRIZ Cases
- Hyper Temporal Lidar With Controllable Detection Intervals
A lidar receiver controls detection intervals to coordinate with variable laser pulse firing rates.
- Light Sensor Dark Current Elimination Duo Switch-Capacitor
Duo switch-capacitor circuits and a reverse capacitor eliminate dark current in light sensors, enabling accurate lux voltage measurement within 1-2 ms.
- Optical Sensor Sensing Circuit Fast Response
A sensing circuit controller discharges an analog output signal when a digital threshold is reached during integration.
- Photodiode Detector Fault Current Compensation for Low-Temperature Thermometry
A microcontroller-controlled corrective current source compensates photodiode fault currents to enable accurate noncontact temperature measurement.
- Graphene Bolometer Johnson Noise Detection
Cryogenic graphene bolometers resolve thermal inertia trade-offs by measuring amplified Johnson noise power proportional to absorbed wave energy.
- Sensor Circuit Identical Capacitors Noise Cancellation
A sensor circuit uses identical capacitors to duplicate voltage deviations from noise charges for cancellation during pixel readout.
- Micro-frame Exposure Control for Distance Resolution and Frame Rate
A pixel array acquires micro-frames with distinct exposure periods to synthesize sub-frames.
- Single-Ended SPAD Quenching Circuit with DC Isolation
A single-ended SPAD quenching circuit merges the anode with the substrate to reduce device area while maintaining high voltage operation.
- SiPM Photodetector Photon Distribution Non-Uniformity
Segmented avalanche photodiode arrays filter non-uniform photon distributions to improve counting accuracy and energy resolution.
- Quenching Bias Circuit for SPAD Timing Accuracy
A quenching bias circuit device maintains constant current flow in a single photon avalanche diode using a feedback current mirror.
- Avalanche Photodiode Gain Stabilization via Temperature Compensation Diodes
Multiple breakdown voltage diodes select bias levels to counteract thermal drift, resolving the trade-off between gain stability and control circuit complexity.
- Receiver Photodiode Biasing Circuit Noise Reduction
Optical biasing photodiodes generate clean voltage for receiver photodiodes, eliminating supply noise and cross-talk in integrated optical circuits.
- Frequency Modulation IR Sensor Using Phase Change Material
A frequency modulation infrared sensor employs a phase change material layer to detect radiation via oscillation signal shifts.
- Optical Module Monitor Feedback Control for Eye Safety
Real-time luminous flux monitoring compensates for ageing effects and prevents eye harm from direct radiation.
- Dual Readout Pixel Cell for High-Resolution Global Shutter Imaging
Segmenting pixels into visible and infrared groups with dedicated readout paths reduces illumination time while maintaining high resolution.