Application Note:Using the TSL2550 with a Microcontroller
The TSL2550 Light To Digital Sensor simplifies the acquisition of ambient light intensity and spectral content information through the use of on-board analog-to-digital conversion and SMBus interface. Targeted at laptop PCs and other portable computing devices, the TSL2550 measures ambient light for the purpose of adjusting display backlighting for minimum power consumption.
Application Note:Use of the TSL2550 for In-Vehicle Displays
Today's driver distraction is far different than in years past from the ever growing number of in-vehicle technologies. Wireless telephones, internet services, navigation devices, and new sophisticated entertainment systems are receiving the National Highway Traffic Safety Administration's (NHTSA) main attention since an estimated 20%-30% of all crashes arerelated to driver distraction. While in-vehicle technologies can impair a driver's ability to drive safely, new safety measures such as ambient light sensing are being taken to further reduce driver distractions prompted by today's innovations.
Application Note:TSL2550 Lux Calculation
The TSL2550 is designed for use with broad wavelength light sources and uses two photodiodes for deriving illuminance (i.e. lux). The first photodiode (Channel 0) is sensitive to both visible and infrared light, while the second photodiode (Channel 1) is sensitive primarily to infrared light. Channel 1's digital output is used to compensate for the effect of the infrared light component on Channel 0.
Application Note:Controlling Backlight with the TSL2550
Automatic Backlight Control is a technique for adjusting brightness to compensate for the surrounding lighting conditions. An Light To Digital sensor (LTD) is used to measure the ambient light level (i.e. the surrounding lighting conditions as perceived by the human eye).
Application Note:Safety In-Vehicle Displays by G Lee
In the presentation, Glenn will point out that the National Highway Traffic Safety Administration (NHTSA) estimates that 20-30 percent of all vehicle crashes is related to driver distraction. Moreover, the NHTSA believes that today's innovative in-vehicle technologies such as cell phones, navigation and entertainment systems, night vision systems and wireless Internet can impair a driver's ability to drive safely. For example, glare and reflection from navigational or entertainment systems can have an impact on a driver's visual performance. 'New safety measures such as ambient light sensing can minimize manual, visual and cognitive distractions by automatically controlling the display brightness levels,' said Glenn.