Display depolarizer

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring initially to FIGS.
1 and 2, there is shown a vehicle accessory 10 such as a rearview mirror which includes a generally concave mirror housing 12 mounted to the vehicle by a mounting assembly 14 of generally conventional design.
The mirror housing includes, as disclosed in greater detail in U.
S.
patent application Ser.
No.
07/567,390, identified above, the disclosure of which is incorporated herein by reference, an electronic package including an electrical compass and temperature measuring circuit for displaying on a display 20, direction heading information, temperature information or other vehicle operating parameter information to the vehicle operator and/or passenger.
The mirror assembly 10 also includes a mirror 14 whose full surface is available since display 20 is mounted to the upper edge of the mirror housing 12.
The mirror assembly may also include a garage door opening transmitter as disclosed in the above identified application and for such purpose, a switch 13 is provided on the housing for actuating the garage door opening transmitter.
Other switches, 15 and 17, are coupled to the electrical circuitry contained within housing 12 for controlling the compass and mirror as described in detail in the above identified patent application.
The mirror 14 may be an electrochromic mirror, an electrically adjustable prism-type mirror or other commercially available mirror which is mounted within housing 12 in a conventional manner and surrounded by a trim bezel 18.
The display 20 includes a reflective target for reflecting information from an alphanumeric vacuum-fluorescent display which is an image source positioned within housing 12 below the display 20 for projecting light upwardly from the vacuum-fluorescent light source to the target which is angled at approximately 45.
degree.
.
The mirror housing integrally includes a lip 22 surrounding the top of the display to provide some shading for the target 24 of the reflective display 20