Optical module for measuring red light

Modules like the TCS34725, Modulino Light, and MSC15 spectral meter can accurately measure red light intensity and color.

RGB Color Sensors

TCS34725 Color Sensor The TCS34725 is a highly precise module designed to detect red, green, blue, and clear light components. It features an integrated photodiode array with RGB filters and a built-in infrared-blocking filter to improve color fidelity. The sensor includes a 16-bit ADC for high-resolution measurements and supports I2C communication, making it compatible with microcontrollers like Arduino and Raspberry Pi. Adjustable gain and integration time allow it to perform reliably under varying lighting conditions, and an onboard LED provides uniform illumination in low-light environments . Modulino Light Module The Modulino Light module offers ambient light, RGB color detection, and infrared sensing. It provides separate red, green, and blue channels for high-precision color measurement and can be easily integrated with Arduino boards via I2C. This module is suitable for smart lighting, color recognition, and interactive projects, allowing developers to measure red light intensity alongside other colors .

Spectral Light Meters

MSC15 Spectral Light Meter For more advanced applications, the MSC15 from Gigahertz-Optik measures the full light spectrum from 360 nm to 830 nm, covering the red light range (approximately 620–750 nm). It uses a fast spectroradiometer with optical bandwidth correction and a cosine-corrected entrance optic for accurate illuminance and color measurements. The device can measure Photosynthetically Active Radiation (PAR), spectral irradiance, and other metrics, making it ideal for LED grow lights, phototherapy lamps, and precise laboratory measurements .

Integrated Optical Sensors

ams OSRAM ALS and Color Sensors ams OSRAM offers high-sensitivity digital optical modules capable of measuring red, green, blue, and clear light (RGBC). These sensors include interference filters directly on photodiodes for precise spectral characteristics and can operate behind dark bezels or glass. They are widely used in mobile devices, monitors, and industrial applications where accurate red light detection is required .

Choosing the Right Module

• For hobbyist or microcontroller projects: TCS34725 or Modulino Light are ideal due to ease of integration and RGB channel separation.
• For high-precision or scientific measurements: MSC15 spectral meter provides detailed spectral data including red light intensity.
• For embedded or compact applications: ams OSRAM ALS and color sensors offer high sensitivity and small form factors suitable for mobile or wearable devices. These modules allow accurate measurement of red light intensity, either as part of RGB color detection or as part of a full spectral analysis, depending on the precision and application requirements.