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LED Flicker Meter,Spectral Light Meters,Percent Flicker

UPRtek MK350D Compact Spectrometer


UPRtek Compact MK350D is the pocket-Sized spectrometer in the world and released in 2014. It is only 70g and easy to carry. Measurement light units are more than 27, such as CCT, LUX, CRI, CIE1976 u, v’, CIE1931 x, y, Spectrum diagram, Percent Flicker and others. Until now, MK350D is standalone, the lightest Bluetooth smart control Handheld Spectrometer and Flicker Meter.


Flicker measurement for disease prevention and health check.


Measuring Harmful Blue Light

MK350D Compact spectrometer adopts the IEC/ TR 62778 which used the IEC 62471 for the assessment of blue light hazard to light sources and luminaire to assist you to lessen the blue light hazard from happening. The widespread use of 3C products leads to eye diseases happening continuously, such as early cataracts, Macular degeneration and so on. However, the degree of eye damage is mostly related to light intensity, light source distance and exposure time. How to find out the risk factor and prevent it early is the best way to stop the blue light from harming human’s eye. Blue light wavelength is from 401nm-500nm.

Blue light weighted irradiance (EB): Intensity of blue light hazard.

Blue light hazard efficacy of luminous radiation (Kbv) = EB / E (Lux). Blue light hazard power ratio per unit of lumens.

BLH Risk Group (RG): The higher the Eb, the” shorter” exposure time is allowed.

Blue Light Hazard-Blue-ray %: The irradiance ratio of blue wavelength (401nm-500nm) for LED. BL% can be applied for museum lighting to avoid the antiquities damages from the blue light.


Standalone operation, no need smart phone or PC connection.


Supports Micro SD card unlimited data storage for measurement.



Compatible with smart devices, Wireless control by Bluetooth.



Additional uSPECTRUM App and Software for advance analysis.

MK350D Compact Spectrometer - Specification (English Version)

Measuring modes, capabilities and system introduction

MK350D Handheld Spectrometer - Comprehensive catalog (English Version)

Brand story, spectrometer application, lighting solution provider and correspondence software

MK350D Compact Spectrometer - Flicker Handbook (English Version)

Introduction on LED lighting flicker, potential health concerns and anti-flicker solution

MK350D Compact Spectrometer - MK350 LED Meter (English Version)

MK350 Series Spectrometer basic features introduction

MK350D Compact Spectrometer - MK350 Series Survival Handbook (English Version)

MK350 Series Spectrometer basic optical know-how and case study

MK350D Compact Spectrometer - User Manual (German Version)

Product introduction on operation, Q&A and warranty services

MK350D Compact Spectrometer - User Manual (English Version)

Product introduction on operation, Q&A and warranty services

MK350D Compact Spectrometer - User Manual (Spanish Version)

Product introduction on operation, Q&A and warranty services

MK350D Compact Spectrometer - User Manual (Japanese Version)

Product introduction on operation, Q&A and warranty services

MK350D Compact Spectrometer - Industry_Application Flicker DM (English Version)

Introduction on LED lighting flicker, potential health concerns and anti-flicker solution

MK350D Compact Spectrometer - DM (English Version)

Spectrometer features and application introduction

MK350D Compact Spectrometer - Global Version Updated (V-

Add: Blue Light Weighted Irradiance (Eb)/Blue Light Hazard Efficacy of Luminous Radiation (Kbv)/Blue Light Hazard Blue-ray % (BL%)/Blue Light Hazard Risk Group(RG)

Dragon Image SMPTE 20150714 UPRtek Spectrometer Mobile

UPRtek MK350D Compact Spectrometer

【UPRtek Unbox】uSpectrum APP – Main Screen and Tool Introduction_EN

【UPRtek Unbox】Wing File Setup – Naming/Search/Delete_EN

【UPRtek Unbox】Wing WiFi Card Connection_EN

uSpectrum PC Software

UPRtek design and produce handheld spectrometer not only provides an easier measurement method, but also abundant spectral information which is widely used in optics field. The handheld

Mobile Spectrum APP

UPRtek has extensive experience in mobile APP design and development. Designe the uSpectrum APP for UPRtek handheld spectrometer series. It provides App Store and Google Play the mos

Academics Research

Photophysical Research and Teaching, LED Light Color Research, Spectral Measurement Teaching Aids

Did you, like me, ever thought of "how did light come from?" When you start learning about how to produce light, you may find that light is not only contains electrons, energies, photons, and many mathematic computation. Producing light also involving colors, color

Light and Agriculture

Plant Growth Light Measurement, Plant Factory Measurement Tool, Plant Growth Monitoring

Indoor Agriculture has been increasingly gaining interest as a means for plant assisted growth using artificial light. This has ramifications for supplemental food production during winter months, especially in regions with short days and reduced sunlight. This technology also

Health and Safety

Blue Light Detection, Flicker Measurement, UV Inspection

Light is essential to human life. Since the electronic technology is getting matured each day, people are using light for not only illumination but also applying it to medical, agriculture and store display...and so on. People now are having awareness about "light" which can be

Lighting Designers

Lighting Design and Installation, Light Source LUX Distribution, Light Color Rendering Index

In the old days, lighting intensity was often ignored, especially in offices and retail shops. People only started to care about the application of illumination to life after the lighting design industrial boom. For example, when do you usually replace your bulb at home or in the office?

LED Manufacturing

LED Production and Manufacturing Inspection, Lighting Equipment Production Quality Management, Light Source Quality Ensurence

What is the most concerned about being an LED manufacturer? Most likely, what consumers concerned about the most before purchase is also what manufacturers are most interested to know. Most consumers are tends to find a balance between price and quality before

The Difference of Light Quality in LED Trading

LEDMaterial Incoming Detection, Control the Lighting Quality, Quantitative Management of Lighting Quality

LEDs are cooler, energy efficient, last longer, shockproof, and are non toxic, and that's why LEDs are a billion dollar industry and growing. However, LEDs are based on semiconductors, which means that because the nature of the semiconductor materials, the light quality is

The Spectrometer in Visual Merchandising

Architectural Lighting Design, Use Lighting for Atmosphere, Use the Ambient Light

Have you noticed that when you pass through the window of the department store, your eyes will always look at the model's body involuntarily(LUX Image Distribution); when you pass through the supermarket fruit display area, you will always stop and reach out to the

Marine Biology

Coral Lighting Lamp, Marine Lighting Research, Aquarium Biological Growth Lamp

Do you feel excited or joyful when seeing red? Perhaps you also agree that human psychology affected by different colors. The various colors in our life come from the light, so, did you ever wonder if animals and plants on Earth also influenced by the artificial light sources?


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