http://www.spdcontrolsystems.com/Docs/SPD Electronics Overview.pdf
3. Vehicles
SPD Smart Glass and plastic products will be used in vehicles for sunroofs, side windows, rear
window, top of the front windshield, side mirrors, rear view mirrors, sun visors and panoramic
roofs. The issues in integrating SPD Smart Glass controllers into a vehicle include determining
an appropriate physical location near each SPD window, satisfying power constraints, vehicle
communication interface selection, diagnostics, quality assurance testing, compact size, extreme
temperatures, and just-in-time delivery of controllers to the vehicle assembly line.
Copyrighted confidential property of SPD Control Systems Corporation (SCSC)
The Systems Behind the Glass®
Besides the obvious aesthetic value of SPD windows there is a substantial energy efficiency gain
by blocking solar energy. This allows for a less powerful air conditioning unit and reduced air
conditioning operation resulting in up to a 10% increase in miles per gallon according to
government estimates.
The dynamic tinting of the windows can be manual and automatic. Manual tinting allows
passengers and the driver to directly control the tint using devices such as push buttons and solid
state sliding switches. Automatic tinting can be accomplished for many conditions including the
vehicle turned on and off, glare, internal temperature, changing state boundaries, emergency
conditions, security conditions, time-of-day, personal settings, door lock state, and more. For
example, when a car is unlocked the windows clear to allow you to look into the car before
entering and when the car is started the window tint is automatically changed to the level before
the car was turned off.
SPD