New JRC introduces a reflective optical sensor the NJL5501R well suitable for Pulse Oximeter and Heart rate monitor.

April 25, 2013

Tokyo Japan, April 25, 2013- New Japan Radio Co., Ltd. (New JRC) has introduced to the market the NJL5501R, a reflective optical sensor with IR / RED LEDs (emission wave length : IR 940nm, RED 660nm) and one photo transistor in a small thin package which is well-suited for Pulse Oximeter*1 and Heart rate monitor.

Most of the Pulse Oximeters employ a transmission type optical sensor on their probes. It is necessary to clamp a projecting part of the human body, such as a finger and an earlobe. And clamping causes problems to be solved such as oppressive feeling and blood flow blocking.

We have developed the reflective optical sensor mounting IR / RED LEDs and one photo transistor in a small thin package which can provide the reflective measurement without clamping, and provide a solution of the problems.

Comparison of the oxygen saturation measurement in arterial blood
Comparison of the oxygen saturation measurement in arterial blood

*1
The Pulse Oximeter is an electronic equipment measuring the oxygen saturation in arterial blood. It utlises the hemoglobin property that there is an optical absorptance difference between hemoglobin and oxyhemoglobin.

[Features]

1. Providing reflective optical measurement to Pulse Oximeter

The NJL5501R provides the reflective optical measurment, and it can chage the probe from clamping type to attaching type.

2. Employing the emission wavelength range required by Pulse Oximeter

The NJL5501R employs the emission wavelength range required by Pulse Oximeter, therefore it can provide a high precision measurement.

3. The industry’s first*2 1-package reflective optical sensor for Pulse Oximeter

The NJL5501R is the industry’s first 1-package reflective optical sensor mounting IR / RED LEDs and one photo transistor in a small and thin package.
*2our check as of April, 2013

[Feature and Characteristics]

NJL5501R
NJL5501R
Peak emission wave length
660nm ± 3nm (RED)
940nm ± 10nm (IR)
Output current
1.0mA to 4.3mA (RED)
145µA to 580µA (IR)
Outline COB Package (1.9mm X 2.6mm X 0.8mm)
Pb-free, Halogen-free
Compliant with RoHS directive

[Applications]

Pulse Oximeter / Heart rate monitor

[Schedule]

Engineering Sample (ES) Already available
Mass Production (MP) May, 2013

A detailed spec is here
NJL5501R

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