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Vishay Intertechnology, Inc.
Detects brightness with an in-vehicle PHOTOSENSORS VEML6031
Vishay Intertechnology, Inc.
Vishay Intertechnology, Inc.
  • Vishay Intertechnology, Inc.
  • NEXT Mobility

VEML6031

By changing the exposure time and gain, it is possible to measure the illuminance (0.0034lx to 228,000lx) of sunlight through low-transmittance glass with high accuracy.
In addition, by detecting brightness after removing infrared light that is invisible to humans, it is possible to detect the same level of glare that humans perceive.
In addition, by increasing the number of measurements per second, accurate brightness detection is possible even when driving at high speeds overseas.

Main applications: Automotive HUD, electronic mirror, MHI, dashboard

  • Vishay's VEML6031 information sheet link here

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Features

Can be used in environments up to 110°C

Due to their characteristics, optical products tend to have an operating temperature range of less than 100°C, but this product's robust packaging means it can be used in an environment of 110°C (Tj = 125°C).

Wide dynamic range

Automotive applications require a wide dynamic range, whether exposed to direct sunlight or detecting light through low transmittance glass. This product can measure from 0.0034lx to 228000lx.

Accommodates high vehicle speeds overseas

Vehicle speeds overseas are generally faster than in Japan. This means that the sensors installed in the vehicle must also keep up with this speed. This can be achieved by setting the exposure time to the shortest setting and increasing the number of measurements per second.

Extracting only visible light from light

For example, sunlight contains not only visible light, which humans perceive as dazzling, but also infrared light, but this has no effect on brightness.
The VEML6031 is equipped with an infrared sensor, which allows it to accurately detect brightness by excluding only the infrared light.

Use Cases

Electronic mirror

Side mirrors mounted on the exterior of a vehicle detect direct sunlight, so they need to sense high illuminance levels. The VEML6031 achieves this.

HUD

Since HUDs project images onto the windshield, they must distinguish between different types of light, such as sunlight and LED lights from oncoming vehicles. The VEML6031 makes this possible.

DISPLAY backlight control

As the transmittance of modern DISPLAY becomes smaller, ILLUMINANCE SENSORS are required to accurately detect brightness even in extremely low light levels. The VEML6031 achieves this.

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