measurements
within applications
where a high degree
of accuracy is
required.
The unique
design of the
All AccuStar electronic clinometers are 100% tested
and calibrated at the factory prior to shipment, and are
accompanied by a two-year comprehensive warranty. The
product is also included under the new Sherborne Sensors
Guaranteed On-Time Delivery program.
For further information, please contact:
Sherborne
Sensors
877•486•1766 (US and Canada)
+ 44 (0) 870 444 0728 (Worldwide)
Email: sales@sherbornesensors.com
Website: www.sherbornesensors.com
Digital Ambient Light Sensors
and Proximity Detectors
Texas Advanced Optoelectronic Solutions®, Inc. (TAOS), is now offering the first members of its next generation
digital ambient light sensor (ALS) and proximity detection
family that is designed to provide consumer electronics
manufacturers with greater freedom to produce sleeker,
more appealing, and innovative product designs. These
latest TAOS devices eliminate the need to use clear
glass/plastic in front of the sensor or drill holes/slots into
the display, bezel, or frame in order for light to reach the
sensor.
Specifically designed to operate behind darkened glass
or other translucent materials, the TSL2771 device family
18 SERVO 06.2010
provides both ambient light
sensing and proximity
detection in a single device
that consumes less power
than currently available
comparable solutions.
Proximity detection is ideally
suited for touch screen
smart phones to
automatically turn off the
display or control other user
functions and can also be
used in laptops, desktop
computers, and monitors to
conserve energy or maintain
information privacy when
the user is not present.
Other emerging applications
for proximity sensing
technology include touchless
display controls activation
and management, as well as
human gesture detection.
The TSL2771 ambient light sensor and proximity
detection device family incorporates an IR LED current-limited driver, analog-to-digital conversion (ADC), interrupt
capability, multiple I2C interface voltage options, and
flexible programming allowing it to be configured into
many different applications. As darkened glass or
translucent materials can be transparent to IR wavelengths
while attenuating visible light by 100 times or more, the
device utilizes TAOS’ patented dual-photodiode
architecture that allows the sensor system to compensate
for the increased IR component. When combined with the
ability to adjust the analog gain settings up to 128X, the
device excels in challenging low-light level applications.
“Power consumption is another key advantage to the
TSL2771 device family,” said Kerry Glover, TAOS, Inc.
Applications Manager. “In many of the portable
applications, battery life is very critical. Traditional
proximity detection methods require a significant amount
of power. With the new TAOS architecture, as few as one
IR pulse is required for presence detection. This can
provide 10x in power savings over traditional analog or
other digital solutions.”
In applications requiring longer distance detection, an
external driver can be utilized to boost the power such
that a person can be detected in front of a monitor. A
unique state machine allows the device to go into a lower
power wait state, thereby only having the high power
external detection running a very small portion of the
time. For applications requiring only ambient light sensing,
this next generation of TAOS devices also includes the
TSL2580/81 high-sensitivity ambient light sensors.
For further information, please contact:
TAOS, Inc.
Tel: 972•673•0759
Website: www.taosinc.com