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Optoelectronic Devices

Nisshinbo Micro Devices has provided optoelectronic devices for about 40 years and our products are used in a wide variety of markets. The portfolio includes six sub categories: Photo Reflectors, Bio-monitoring Sensors, Position Sensors, Touchless Sensors, Photo Detectors and Ambient Light Sensors. These meet market needs such as high resolution, low current consumption, and small and thin package. We also have capability of customized products, so please contact us.

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Products for personal healthcare

Our optical semiconductor devices are used in numerous fields, ranging from industrial equipment to consumer devices. Especially, they attract the medical and healthcare fields as key components of healthcare products for personal and company use.

Due to high health-consciousness, the demand for personal healthcare products is increasing. It is obviously helpful for preventative medicine if we can see any changes in our physical condition day by day by ourselves. Also, It can prevent dehydration and heat stroke by detailed phyical condition and exercise intensity monitoring during physical exercise, and is also helpful for planned training management.

These days, wrist watch type terminals are sold, which use light to irradiate blood vesseles from changes in the amount of reflected light. They have a function to be able to show the increase-decrease of pulse rate and amount of oxygen in the blood (SpO2: peripheral capillary oxygen saturation). As diagnosis for severity of pneumonia by COVID-19, SpO2 monitoring is said to be useful.

Our optical semiconductor devices contribute to the development of wearable devices revolutionize the approach to healthcare. We also play a part in the development of various new products - such as smartphones that can detect your pulse and SpO2 from your fingertip, and earphones that can monitor your health while you listen to music.

Light receiving / emiting element integrated sensor for reflective type usage

For pulse rate monitor


LED λP : 525nm

Light receiving element: High sensitivity Si photo diode with IR cut filter


Package: COBP 3.15 x 6.0 x 0.65mm

For pulse rate / SpO2 monitor


LED λP : 660, 940nm

Light receiving element: High sensitivity / high speed PIN photo diode


Package: COBP 2.4 x 3.75 x 0.8mm

Light receiving element for transmission type usage (High sensitivity / high speed PIN photo diode)


Light receiving wavelength range: 400 to 1000nm (λP=900nm)

Active area size: 1.5 x 1.5mm


Package: COBP 2.1 x 2.6 x 0.8mm


Light receiving wavelength range: 400 to 1000nm (λP=890nm)

Active area size: 2.98 x 2.98mm


Package: COBP 3.55 x 3.95 x 0.8mm

Small size light receiving element for earphone usage (High sensitivity / high speed PIN photo diode)


Light receiving wavelength range: 400 to 1000nm (λP=850nm)

Active area size: 0.7 x 0.7mm


Package: COBP 1.2 x 1.7 x 0.5mm

Position Sensor for high resolution reflective encoder

NJL58xx series

●The NJL5820R/21R/22R series is a reflective type optical sensor combining a high power IR LED and a light receiving element.

●This series has high robustness by processing reflected light from the recommended striped reflectors. Also, it contributes to simplifying assembly and miniaturization of equipment.

●It contributes to reducing current consumption and design effort with the sensor optimized for various rotation detection.




Series Package Size Operating
Resolution Reflected/Unreflected surface Strip Width
NJL5820R 2.6x2.5x0.8mm -30℃ to 85℃ 50.8LPI Reflected surface 0.25mm
Unreflected surface 0.25mm
-30℃ to 105℃ 150LPI Reflected surface 0.085mm
Unreflected surface 0.085mm
180LPI Reflected surface 0.070mm
Unreflected surface 0.070mm

* In the case of use striped reflector made by MELTEC Corporation.