Large format biocular lens
AssigneeThe United States of America as represented by the Secretary of the Army
InventorJohn M. Hall
Life of this patent
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Abstract
A novel optical design form for a biocular lens arrangement having a large format focal plane and large eye relief zone is disclosed. Key aspects of a large format biocular lens arrangement are: Lightweight plastic design for all but outermost lens, where more durable glass is desired; a large front aperture for comfortable eye motion; improved eye channel overlapping field of view with minimal distortion; and full color resolution.
Claims20
A large format biocular lens arrangement, comprising:
- a large format display panel having a linear dimension greater than a normal maximum human eye pupil separation of 72 mm;
- a first meniscus shaped lens;
- a second bi-convex shaped lens to provide a positive optical power;
- a third bi-convex shaped lens to provide a negative optical power;
- and
- a single outermost bi-convex spherical shaped optical lens to allow left and right eyes to see a biocular view through said single outermost bi-convex spherical shaped optical lens, enabling each of a viewer's eyes to independently see a defined field of vision.
A large format lens arrangement, comprising:
- a large format display panel sized on the order of 140 mm;
- a first meniscus shaped lens;
- a second bi-convex shaped lens to provide a positive optical power;
- a third lens to provide a negative optical power;
- and
- a single outermost bi-convex spherical shaped optical lens, wherein said outermost bi-convex spherical shaped optical lens has a diameter of about 138 mm to allow both eyes of a viewer to directly see through said single outermost bi-convex spherical shaped optical lens and view said large format display panel using said both eyes.
A method of displaying an image for biocular viewing with both eyes using a large format lens arrangement, the steps of the method comprising:
- an image is displayed from a large format display panel sized wider than a normal maximum human eye pupil separation of 72 mm;
- the displayed image is optically passed through a first meniscus shaped lens to function as a field flattener and flatten a field of the displayed image;
- the field flattened image is passed through a second bi-convex shaped lens which provide a positive optical power and additional correction of field aberrations;
- the field aberrations corrected image is passed through a third bi-convex shaped lens to provide a negative optical power and a color correction over a visible photopic spectrum;
- and
- the color corrected image is viewed by left and right eyes through a single outermost bi-convex spherical shaped optical lens to allow a biocular view, enabling each of a viewer's eyes to independently see a defined field of vision.
Dependencies are inferred from the claim text.