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1. WO1996003670 - AN APPARATUS FOR DISPLAYING AN IMAGE

Publication Number WO/1996/003670
Publication Date 08.02.1996
International Application No. PCT/GB1995/001658
International Filing Date 13.07.1995
Chapter 2 Demand Filed 13.02.1996
IPC
G02B 5/09 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
08Mirrors
09Multifaceted or polygonal mirrors
G02B 17/06 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
17Systems with reflecting surfaces, with or without refracting elements
02Catoptric systems, e.g. image erecting and reversing system
06using mirrors only
G02B 27/22 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
22for producing stereoscopic or other three-dimensional effects
CPC
G02B 17/0621
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
17Systems with reflecting surfaces, with or without refracting elements
02Catoptric systems, e.g. image erecting and reversing system
06using mirrors only ; , i.e. having only one curved mirror
0605using two curved mirrors
0621off-axis or unobscured systems in which not all of the mirrors share a common axis of rotational symmetry, e.g. at least one of the mirrors is warped, tilted or decentered with respect to the other elements
G02B 30/56
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
30Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
50the image being built up from image elements distributed over a 3D volume, e.g. voxels
56by projecting aerial or floating images
G02B 5/08
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
08Mirrors
G02B 5/09
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
08Mirrors
09Multifaceted or polygonal mirrors ; , e.g. polygonal scanning mirrors; Fresnel mirrors
Applicants
  • CENTRAL RESEARCH LABORATORIES LIMITED [GB/GB]; Dawley Road Hayes Middlesex UB3 1HH, GB
Inventors
  • SHANKS, Ian, Alexander; GB
  • DOBRUSSKIN, Christoph; GB
Agents
  • MARSH, Robin, Geoffrey; Thorn Emi Patents Limited Central Research Laboratories Dawley Road Hayes Middlesex UB3 1HH, GB
Priority Data
9414723.821.07.1994GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) AN APPARATUS FOR DISPLAYING AN IMAGE
(FR) APPAREIL D'AFFICHAGE D'UNE IMAGE
Abstract
(EN)
An apparatus for displaying an image of an illuminated object or a first image comprises a converging mirror and a further planar or conical mirror facing the first. At least one mirror is partially light transmissive, and may comprise a polarizing beam-splitter or normal beam-splitter. Means such as, for example, a louvre film may be provided to prevent light rays from the original object or image from being directly observable from an area remote from the mirrors. The first mirror may be a concave mirror (such as a parabolic mirror) or a Fresnel mirror. The invention can give the advantage of a wide viewing angle, and can give a more visually striking real image which floats in space displaced from the mirrors.
(FR)
Un appareil conçu pour afficher l'image d'un objet éclairé ou une première image comprend un miroir convergent et un autre miroir plan ou conique faisant face au premier. Au moins un miroir partiellement transparent peut comporter un diviseur de faisceau polarisant ou un diviseur de faisceau normal. Un élément tel qu'un film-écran peut être ménagé pour empêcher de voir directement, à distance des miroirs, les rayons lumineux provenant de l'objet original ou image originale. Le premier miroir peut être un miroir concave (tel qu'un miroir parabolique) ou un réflecteur de Fresnel. L'invention permet d'avoir un angle d'observation étendu et peut donner une image réelle plus réaliste qui flotte dans l'espace à l'écart des miroirs.
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