Superimposed tell-tales

Details Superimposed tell-tales Superimposed tell-tales

1991-05-30

1993-05-25

Ng, Jin F.

Communications: electrical

Aircraft alarm or indicating systems

Nonalarm flight indicator

340461, 340705, 359 24, 359630, G01C 2100

Patent

active

052144259

ABSTRACT:
A holographic head-up display having first and second superimposed reflection holograms supported by a vehicle windshield, and first and second playback sources respectively associated with the first and second reflection holograms and positioned such that reflection by the windshield of playback illumination from one playback source is toward the other playback source. In particular, the first and second playback sources are configured such that the centerlines of the playback beams provided by the first and second playback sources are coplanar in a common plane that is substantially normal to the holograms, with the centerlines intersecting generally in the hologram layers and having substantially the same angle of incidence on the hologram layers as measured relative to normal in the common plane.

REFERENCES:
patent: 4078177 (1978-03-01), Tiemens
patent: 4730881 (1988-03-01), Taguchi et al.
patent: 4790613 (1988-12-01), Moss
patent: 4795223 (1989-01-01), Moss
patent: 4930847 (1990-06-01), Cederquist
patent: 4973132 (1990-11-01), McDonald et al.
patent: 5044709 (1991-09-01), Smith et al.

Affiliated with

Also associated with

Rating

Superimposed tell-tales does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Superimposed tell-tales, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superimposed tell-tales will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-900481