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Applications

Portable Electronic Devices

Device for adjusting brightness

Contributes to the extended operation of digital mobile devices by reducing the power consumed by automatic light adjustments using the illumination sensor.

The illumination sensor detects the brightness of the surrounding area and adjust the brightness of the display light and lights used for operation buttons which goes to decreasing the power consumption and getting a better visibility.This illumination sensor therefore contributes to lower cell phone power consumption.

Two types of sensors are available: photo-IC types and photo-diode types (amorphous).

Photo ICs

Feature of SANYO photo ICs

  1. Smallest in the industry OD-CSP (1.01 mm × 1.01 mm, 0.6 mm thick)
    Compactness through application of CCD camera module package technology such as back-side wiring.
  2. Spectral sensitivity, very close to the human visibility
    Uses the IR (infrared) cut filter and color filter to reduce differences in sensitivity between the light sources such as incandescent and fluorescent lamps.
  3. Various output line-ups.
    Line-up of three types of outputs to support various needs from customers; "linear current output", "logarithmic current output", and "digital output.".
  4. Output current with low variation and low change caused by temperature changes
  5. Built-in gain switch and sleep function
  6. Low current consumption

Amorphous Photosensors

Feature of SANYO amorphous photosensors

  1. High-sensitivity detection within the visible-light spectrum
    SANYO amorphous photosensors have sensitivity in the same range as visible-light spectrum and provide light sensing capability similar to human eyes.
  2. Output current is proportional to illumination.
    Accurate current detection is possible because output current increases propotionally to the illuminance.
  3. Amorphous sensors display less fluctuation compared to sensors from other manufacturers.
  4. Amorphous photosensors display less fluctuation due to characteristics of different light sources compared to sensors from other manufacturers.
  5. Amorphous photo sensor rise and fall times are fast enough.

To the page of amorphous photosensors

Applications: To cell phones

Applications: To digital cameras

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