New Japan Radio (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.
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.
[Feature and Characteristics]
Peak emission wave length
660nm ± 3nm (RED)
940nm ± 10nm (IR)
1.0 mA to 4.3mA (RED)
145mA to 580mA (IR)
Outline COB Package (1.9mm X 2.6mm X 0.8mm)
Compliant with RoHS directive
Pulse Oximeter / Heart rate monitor
[Schedule / Reference price]
Engineering Sample (ES) Already available
Mass Production (MP) May, 2013