Meter for displaying virtual image
View Patent ↗A virtual image type meter includes a virtual image display ( 3 ) for projecting a first image reflected by a half mirror ( 10 ) toward an range of sight (ER), and a real image display ( 11 ) positioned at the back side of the half mirror ( 10 ) for projecting a second image to be seen through the half mirror ( 10 ) toward the range of sight (ER). According to above configuration, the virtual image type meter can display a larger number of useful information. Further, a total display width, which is a sum of the first and the second image widths, can be narrower than that of the meter in which the real image display ( 11 ) is positioned in front of the half mirror ( 10 ).
1. A virtual image type meter including:
a virtual image display for displaying a first image indicating one predetermined vehicle information by luminous indication;
a half mirror for reflecting the first image from the virtual image display toward a predetermined range of sight of a vehicle driver; and
a real image display for displaying a second image indicating another predetermined vehicle information by luminous indication, said real image display being positioned at the back side of the half mirror to allow the second image to be seen through the half mirror,
whereby the first and second images are visually recognized by the vehicle driver from the range of sight extended to include an expected variation without any overlap between those images,
wherein the real image display includes a light source receiving chamber having inner walls sloped from a bottom to an opening of the chamber, and a specifically designed sheet for covering the opening of the chamber, said specifically designed sheet on which a design of the second image is formed,
wherein said inner walls have different slope angles corresponding to positions of the inner walls for illuminating the specifically designed sheet more evenly than inner walls having a same slope angle.
2. The virtual image type meter as claimed in claim 1 ,
wherein the real image display is spaced a predetermined distance from the half mirror to allow the second image to be visually recognized at both sides of the first image from the range of sight.
3. The virtual image type meter as claimed in claim 2 ,
wherein the real image display displays a warning only when it is required, and the virtual image display always displays a measured value of a measuring instrument of the vehicle.