Device for forming an autostereoscopic image
OwnerPierre Allioinventor
Life of this patent
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Abstract
A device for forming autostereoscopic images by implementing a cylindrical lens array, the device being characterized in that it comprises in succession: an entrance objective (L1, L2); a lens array (20) having diverging elementary cylindrical lenses disposed substantially in the image focal plane of the entrance objective, said array having a focal length such that for an image area equal to the pitch (p) of the lenses making it up, the image of the entrance pupil of the entrance objective (L1, L2) has a nominal width equal to said pitch; and a converging transfer optical system (L3, L4) for forming an orthostereoscopic real image.
Claims12
A device for forming autostereoscopic images by implementing a cylindrical lens array, the device comprising in succession:
- a telecentric entrance objective having an image focal plane and an entrance pupil;
- a lens array having diverging elementary cylindrical lenses disposed substantially in the image focal plane of the entrance objective, said lenses having a longitudinal axis, and said array having a focal length such that the image of the entrance pupil of the entrance objective has a width equal to a pitch of said lenses;
- and
- a field lens to project substantially all light rays from said array towards a converging transfer objective, said transfer objective forming an orthostereoscopic real image from said light rays.
Dependencies are inferred from the claim text.