Features of Star LED
High reliability
It achieves high reliability and a low defect rate.
In long-term continuous operation tests, the
decrease in output power is very small, and stable performance is maintained.
Stable Lambertian light distribution
Ideal for reflective encoders – stray-light-suppressing Point Source LEDInfrared
In reflective encoders, the LED and the photodetector are mounted on the same plane, so side-leakage light from the LED becomes noise for the photodetector and can degrade encoder performance.
Illustration of leakage-light noise
A reflective encoder has a structure in which light emitted from the LED is reflected by a code wheel and the reflected light is detected by a photodetector. Compared with transmissive encoders, it can be made smaller and thinner, making it suitable for space-constrained applications. On the other hand, because the LED and the photodetector are placed close together, leakage light from the side of the LED becomes noise and may affect detection accuracy.
Reflective encoder
Suppression of leakage-light noise
When used in reflective encoders where it is mounted adjacent to the photodetector, the stray-light-suppressing LED reduces noise caused by stray light from the side of the LED.
Standard product
Stray-light-suppressing product
Operating in high-temperature environments – high-heat-resistance Point Source LEDInfrared
The high-heat-resistance products increase the freedom of thermal design in customer
applications and improve operating reliability in high-temperature environments.
In
response to recent customer needs for smaller and thinner applications, we have newly
developed additional high-temperature-compatible products: "MED8P75A," "MED8P76A," and
"MED8P77A."
Brighter – high-power Point Source LEDRedInfrared
By redesigning the structure of the LED product, output power was improved, achieving higher sensor sensitivity and lower power consumption.
