The Best Light meter & Lux meter Manufacturer in China

A light meter helps users determine whether lighting conditions meet required standards in various fields such as lighting manufacturing/sales and architectural and indoor lighting design, ensuring optimal lighting environments. For plant enthusiasts, a light meter for plants is especially useful in checking grow lights, ensuring your plants receive the right amount of light to thrive. With so many light meter options available on the market today—featuring different brands, manufacturers, and price ranges—choosing the right light meter has become a key consideration.

A light meter, also known as a lux light meter, is a specialized instrument used to measure the illumination level of light sources. Light meters are commonly used in a wide range of applications such as indoor lighting, outdoor lighting, greenhouse cultivation, and stage lighting. They measure brightness in units like lux (lx), foot-candle (fc), or candela per square meter (cd/m²).

In daily life and work, over 80% of the information people receive comes through their eyes, making a well-lit environment critically important. Working in dim lighting not only harms physical health but can also lead to safety risks. So, how can we determine whether the lighting meets proper standards? This is where a light meter comes into play.

A quality lux light meter doesn’t just measure brightness—it can also assess parameters such as color rendering index (CRI), flicker, and blue light hazard, allowing for a comprehensive evaluation of lighting conditions. By using a reliable light meter, we can ensure a safe, comfortable, and visually optimized environment for living, learning, and working.

1. Spectral Illuminance Meter (Spectroradiometer)

   Principle: Incident light is split into different wavelengths (usually via diffraction grating or interference filters), and measuring the light intensity at each wavelength with a sensor, the lux value is then calculated by weighting the data according to the CIE luminous efficiency function V(λ). This process also provides a wide range of additional light parameters, such as correlated color temperature (CCT), color rendering index (CRI), and PPFD.

   High sensitivity and wide applicability, suitable for lighting design, horticultural lighting and other high-end fields.

2. Silicon Photodiode Illuminance Meter (Silicon Light Sensor)

   Principle: Utilizes a silicon photodiode to sense visible light intensity; the stronger the light, the greater the current generated. Can be calibrated with optical filters to match the human eye’s sensitivity (i.e., conforms to the CIE photopic luminous efficiency function V(λ)).

   Most digital lux meters on the market use this method (e.g., Testo).

If you need a light meter, how should you choose one? First, you need to clarify your specific needs—do you require measurement of general illuminance or plant-specific lighting (PPFD)? Are there any special requirements, such as viewing the spectral distribution of the light source? Once your needs are clear, you can start looking for instruments on the market that meet those requirements. Then, compare them based on their features, price, and the reputation or reliability of the manufacturer to find the most cost-effective option that suits your needs.

Here, I’ve shortlisted a selection of light meter manufacturers currently available on the market for your reference.

1. The Linshang spectral light meter measures multiple parameters at the same time: illuminance (Lux), correlated color temperature (CCT), flicker frequency, UV index, color tolerance (SDCM), color rendering index (CRI), temperature, humidity, PPFD, YPFD, and more.

2. The device uses a high-precision spectral sensor that meets the CIE photopic vision standard. It can detect the light spectrum and analyze light intensity across different wavelengths, giving a full evaluation of the light source.

3.  It has a wide measuring range up to 1,000,000 Lux, allowing accurate measurement even under strong light.

4. The meter can measure flicker frequency and flicker depth, helping to assess the stability of the light source.

5. It supports CCT, CRI, and SDCM measurements for a full evaluation of light color performance.

6. It displays the blue light hazard ratio, useful for checking lighting safety in study or office environments.

7. It can measure plant light parameters like PPFD, YPFD, chlorophyll a, and chlorophyll b, to assess plant growth lighting. It also measures UV index, temperature, and humidity to help create optimal conditions for plant growth.

8. The device can pass inspection by national metrology institutes, ensuring accurate and reliable data that meets industry standards.

As of 2025, we have obtained over 100 patents and certifications, showcasing our strong innovation capabilities and technical strength..

Linshang spectral light meter has become one of the most cost-effective spectral light meters on the market today. Without the need for a high price tag, you can own a device capable of simultaneously measuring multiple parameters such as illuminance, spectral curve, and plant light levels, meeting all your lighting measurement needs in one go.