Abstract: A projector display system comprises a projector and a laminate glass panel comprising first and second glass layers and an assembly of interlayers sandwiched therebetween. The first glass layer is substantially parallel to the second glass layer and the assembly of interlayers includes a reflective polarizer film. The reflective polarizer film of the laminate glass panel has a predetermined range of incident angles defined by an upper limit and a lower limit, wherein when the image is projected onto the laminate glass panel at an incident angle within the predetermined range of incident angles, the reflective polarizer film is adapted to reflect a minimum threshold amount of a first polarized light component of the said image. The projector projects an image onto the laminate glass panel at a selected incident angle that is at least 30° less than the lower limit of the said predetermined range of incident angles.

Abstract: An electronic accelerometer-based tilt switch for vehicles is capable of controlling the state of an electrical circuit according to the angle of inclination of the switch, for example to control power to a lamp. The switch includes a housing mountable to a vehicle member that is movable between a first position and a second position. When the vehicle member is in the first position it is at a predetermined angle of inclination versus when the vehicle member is in the second position. The housing may include an accelerometer and a control circuit to receive signals from the accelerometer indicative of an instant angle of inclination of the vehicle member and to switch the state of the electrical circuit between first and second states corresponding to first and second positions of the vehicle member.