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refondのパルス酸素濃度測定およびlidar市場向けの最新赤外線ledソリューション

2023-01-03

The development of equipment and technology brings convenience to people」s lifeですSpeaking of useful devices,pulse oximetry and LIDAR must be mentioned. pulse oximetry is a noninvasive device used to measure the oxygen level ofthe『blood、which is easy to operate by clipping this equipment onto a patient'sフィンガー。LIDAR (Light Detection and Ranging),an optical technologyですis a key method for distance sensing for autonomous vehicles. It can also apply to the geographical survey,river bed elevation, and the density of forests and hills. Despite different features, they share one thing in common:they rely on the help of infrared LED that emits infrared light invisible to the naked eyeです。

 

(copyright photo from https://unsplash.com/photos/-mstezgwkjs)

 

How Do Pulse Oximetry and LIDAR Work With Infrared LED


1. Pulse Oximetryです

pulse oximetry consists of light-emitting diodes (LEDs), a LED with a wavelength of 660 nmです。and an infrared LED with a wavelength of 940 nm. Absorbing light at the two works differently. Oxyhemoglobin in theblood mainly absorbs infrared light with wavelengths ranging from 850 nm to 1000nmです,while deoxyhemoglobin mainly absorbs red light at 600 nm to 750nm. The pulse oximetry is designed to based on Theprinciple that deoxyhemoglobin at 660nm has higher absorptionですand oxyhemoglobin at 440 nm has a higher absorption. Then the value of the reflected light intensity collected isですconverted to that of the oxygen level of the bloodです

 

 

 

2 . lidar

A laser, A scanner, A specialized GPS receiverですand IMU (inertial measurement unit) are the four main components of a LIDAR system. the LIDAR technology uses infraredですLED to deliver light pause and receive the reflected light to measure distances to a target. It captures millions ofprecise distance measurement points each second, producing a 3D matrix of its environment. Thanks to the help of LIDAR,objects」position, shape, and behavior can be obtained from the comprehensive mapping of the environmentです。

 

Refond」s IR LED Solutions for Pulse Oximetry and LIDARです

Refond is cognizant of the increasing demand for IR LED circuits for pulse oximetry and LIDAR. Thus,we introduced advanced infrared LED solutions to solve the pain points of industrial applications and meet therequirements of different application scenarios. Here are the infrared LED solutions offered by usです。

 

1. Blood Oxygen Sensing Seriesです

「The right components, especially infrared LED」ですare integral to ensure the measurement of the oxygen content of the blood. If the LED driver circuit has noise near DCcoupled with nonlinearity, it will impact the LED brightnessですthereby affecting the measurement accuracy of the oxygen level of the blood. Our IR LED for blood oxygen sensing seriessolve pain points that industries have long encounteredです;it can easily detect light signal at a wavelength of 940 nm and 660 nm, being a reliable option for pulse oximetryです。

2. LIDAR(CLCC series)です

Our infrared LED for LIDAR system boasts the following advantages that make it stand out among its other counterpartsです。

l Feature with hardware filtering and dragging pointですwhich can effectively avoid interference caused by some noise pointsです。

e = "読み書き- left: 21 pt;text—align: justify;」> l Synchronously output the target object reflection intensity, which can be used for algorithm measurementです。

l Ranging accuracy of being equal to or greater than 30mmです。

l Excellent linear characteristics of different objectsです。

l No interference between the radars when the multiple radars operate at the same timeです。

l Special optical design, which can effectively improve the anti-dirt performanceです。


 

 

 

Refond」s Outlook on Futureです

Our IR LED strip has the edge regarding professional packaging capabilities, high power density,In the future, Refond will remain true to our original aspiration,bringing innovative technology to enrich human lifeです。Meanwhile,we will integrate global resources and technology to develop state-of-the-art infrared LED solutions. For example,advanced proximity light sensors ad UV sensors will be introduced in the foreseeable futureです。Stay tuned!

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