Photodetectors
They generate analog signals proportional to the photon flux
Types
- Photoemission or Photoelectric
- Semiconductor
- Active-Pixel Sensor
- Charge-Coupled Devices
- Reverse biased LEDs
- Photoresistors
- Phototransistors
- Pinned photodiodes
- Quantum dot photoconductors
- Photovoltaic Cells
- Photochemical
- Photoreceptor Cells
- Photographic Plates