Browse Prior Art Database

Display System using Deformable Surface and Sequential Illumination

IP.com Disclosure Number: IPCOM000106740D
Original Publication Date: 1993-Dec-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Garwin, RL: AUTHOR [+3]

Abstract

Disclosed is an illumination method for projection from a deformable surface. Micromechanical techniques known in the art are used to make movable mirror 1 on a silicon substrate 2 . Each mirror 1 is suspended over a set of electrodes 3 and can be moved through an angle of about 10 degrees by applying voltage to the electrodes shown.

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Display System using Deformable Surface and Sequential Illumination

      Disclosed is an illumination method for projection from a
deformable surface.  Micromechanical techniques known in the art are
used to make movable mirror 1 on a silicon substrate 2 .  Each mirror
1 is suspended over a set of electrodes 3 and can be moved through an
angle of about 10 degrees by applying voltage to the electrodes
shown.

      Each mirror can have many positions, in theory.  For our
purposes, assume it has just three; center, left, and right.

      Three light sources are disclosed to illuminate the mirrors of
the deformable substrate from three different directions, 4, 5, and 6
as shown in the Figure.  The large angular range of the deformable
mirrors means that we can dispense with complicated and expensive
dichroic mirrors to combine the light of the different colors, and
instead use the geometric scheme sketched.

      If flash one light at a time is flashed, only one setting of
the mirror will allow light from a particular lamp through the
optical system in the direction 7 to the projection system or to the
eyes of the viewer.  The other two settings will deflect the light
out of the path.  All mirrors could now be sent to pass or not pass
light from red lamp coming from direction 4 through the optical
system, flash the red light, then reset the mirrors and repeat the
process for the green light from direction 5, then the blue light
from direction 6 and so...