Date: 4th Mar 2010
Phototransistor-based ambient light sensors
video demo by Vishay
Vishay has added a new streaming video product demonstration
on its Web site www.vishay.com. Vishay's ambient light sensors
with infrared filtering epoxy technology match the spectral
sensitivity of the human eye, with minimal sensitivity to
light beyond the visible range. This helps to prevent interference
from the infrared component of natural light and artificial
lighting such as incandescent and halogen light bulbs. The
new five-minute video features a brightness level test which
highlights the performance of Vishay's TEMT6200FX01 over
competitor and standard silicon phototransistor parts.
Vishay says the demonstration shows that with different
light sources, other technologies show a significant deviation
in the brightness level detected. Vishay's TEMT6200FX01,
however, most closely matches the spectral sensitivity of
the human eye by showing nearly no deviation.
This level of performance allows Vishay's ambient light
sensors to be used for automatic control of LCD brightness
in consumer electronics, where they increase user comfort
level and reduce power consumption by turning on keypad
backlights only in low ambient conditions, and controlling
LCD display brightness to optimize viewing based on ambient
light.
To view the video demonstration, go to:
http://www.vishay.com/landingpage/videos/demo_ambient_light_sensor.html
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