Universal LightProbe™ Penta Sensors

Data Sheet
Page 1
Universal LightProbe™ Penta Sensors
Optomistic Products’ most popular sensor, relied upon for their versatility in accommodating most LED color
and intensity test applications. The Penta Sensor provides analog voltage outputs, and features built-in color
binning, eliminating the need to convert LED wavelength to visual color in the ATE software, and saving
valuable processing time.
Color Response
The Universal LightProbe Penta Sensors test for
the five main LED colors, plus white, and provide
an unambiguous and stable analog voltage output,
independent of LED intensity, for each color:
Blue: 1.0 volts
Green: 1.5 volts
Yellow/Amber: 2.0 volts
Orange: 2.5 volts
Red: 3.0 volts
White: 3.5 volts
Intensity Response
10
1
Vout
(volts)
0.1
0.01
1
10
Luminous Intensity (mcd)
100
1000
Typical response for PLCC green LED tested with Universal LightProbe Penta
Sensor and “Trident” Small-Aperture Fiber-Optic Probe
The Universal LightProbe Penta Sensors test a wide
dynamic range of LED intensity, without adjustment.
The sensor provides an analog output ranging from 0
to 4 volts, corresponding to the LED’s luminous intensity in millicandelas (C.I.E. photopic-curve-corrected).
The mcd-related output is consistent with most LED
manufacturer’s specifications. A read-out of less than
50mV indicates under-ranging (LED too dim) and over
4.0 volts indicates over-ranging (LED too bright).The
sensor’s intensity response depends on a variety of
factors, including the size of the LED, the aperture of
the fiber-optic probe, and the distance of the probe tip
from the LED emitter. The Penta Sensor will test PLCC
surface-mount LEDs up to 3,000 mcd. For the test of
very dim LEDs, Universal LightProbe High Sensitivity
Sensors are available. For the test of very bright LEDs,
Universal LightProbe Penta Low-Sensitivity or Very Low
Sensitivity Sensors are available. For more information
on sensitivity response in millicandelas, please see
Application Note 35.
Supply Voltage Protection
Universal LightProbe Sensors offer reliability and versatility, operating at any voltage from +5 volts to +40 volts
and withstanding reverse polarity up to -18 volts without permanent damage. This provides immunity from
accidental power supply wiring mistakes and from reverse polarity up to -18 volt “spikes” due to D.C. power line
inductive switching transients as well as inadvertent reverse polarity “shorts” testers, while permitting their
operation from different D.C. supply voltages commonly encountered in industry (ie: 5, 12, or 24 volts D.C.).
©2012 Optomistic Products. All rights reserved.
U.S. PATENT
Universal LightProbe™ Penta Sensors
Data Sheet
Page 2
Universal LightProbe Penta Sensor
Pin-Out
Four standard wire-wrap pins are used for:
G – Ground, common 2-level wire-wrap pin for individual
analog signal output and power input ground connections
Int. – Intensity of LED under test
Color – Color of LED under test
P – DC Power input, +5 volts to +40 volts
Sensor Characteristics
Sensor size: 0.560 inches diameter x 1.38 inches long
Operating temperature range: 0oC to 70oC
Typical response time: color and intensity outputs
simultaneously in less than 340mS
Power consumption: Approx. 6mA with a 5-volt supply
Universal LightProbe Sensors are one of the smallest
LED sensors on the market. When paired with
Universal LightProbe Fiber-optic Probes they will test
LEDs spaced as close as 0.050 inches on centers.
Fiber-optic Probes
Universal LightProbe Penta Sensors are available with a
choice of Universal LightProbe Fiber-Optic Probes (see
separate catalog and guide “Which is Best for Your Test”).
Their stainless-steel tips range from 0.050 inches to 0.134
inches in diameter. The popular Trident enables the test
of three LEDs for the cost of a single sensor. Fiber-optic
probes are available for refined intensity test, for the test of
dim LED’s and to compensate for misalignment errors.
Custom fiber-optic cable lengths may be ordered.
Installing the Sensor and Fiber-Optic Probe Units
Installation is achieved with one-hole fixing, using a simple
clamp for the sensor and forked clamps for the probes to
allow the height of the probes above the LEDs to be
adjusted. Four wire-wrap pins are provided on the sensor
for D.C. power and signal connections, or use the
Universal LightProbe Connector Cable for easy, error-free
wiring to the ATE (see separate data sheet).
Part number:
ULP PCI/V - Universal LightProbe Penta Sensor
Also available: ULP PCI/V HS - Universal LightProbe Penta High Sensitivity Sensor
ULP PCI/V LS - Universal LightProbe Penta Low Sensitivity Sensor
ULP PCI/V VLS - Universal LightProbe Penta Very Low Sensitivity Sensor
See Application Note 35 for more detail on sensor sensitivity ranges
The information in this data sheet is intended to be a general product description. Optomistic Products reserves the right to make changes in specifications and
characteristics at any time without notice. Unless specified otherwise, all dimensional values are nominal.
©2012 Optomistic Products. All rights reserved.
PO Box 751 • South Freeport, ME 04078 USA | Phone (207) 865-9181 • Fax (207) 865-9182
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U.S. PATENT