Optical assembly for a projection system
AssigneeHewlett-Packard Development Company, L.P.
InventorsScott Lerner, James W. Ring, Brett E. Dahlgren
Life of this patent
Estimating the term…
Abstract
An optical assembly for a projection system includes an objective lens and a retro-focus lens. Then objective lens and retro-focus lens share one or more lens elements. A method of projecting an image comprises directing light from a light source to one or more modulators and projecting a modulated light beam using an optical assembly that includes an objective lens and a retro-focus lens that share one or more lens elements.
Claims22
An optical assembly for a projection system comprising:
- an objective lens comprising multiple lens elements;
- a first mirror arranged with said multiple lens elements of said objective lens to receive light from a light source and direct that light off-axis through lens elements of said objective lens to one or more light modulators;
- and
- a retro-focus lens arranged to receive modulated light directed through said retro-focus lens by said objective lens from said one or more light modulators, wherein said retro-focus lens projects said modulated light,
- wherein said objective lens and said retro-focus lens share one or more lens elements, said retro-focus lens further comprising at least one additional lens that is different from said one or more shared lens elements.
An optical assembly for a projection system comprising:
- means for receiving light from a light source and directing said light to and from one or more modulators, said means for receiving light comprising an objective lens;
- and
- means for projecting and focusing a modulated light beam received from said means for receiving light, means for projecting and focusing a modulated light beam comprising a retro-focus lens;
- wherein said objective lens and said retro-focus share one or more lens elements, but each of said objective lens and said retro-focus lens also comprise at least one other lens element that is not shared with the other of the objective or retro-focus lens.
An optical assembly for a projection system comprising:
- an objective lens comprising multiple lens elements;
- a first mirror arranged with said multiple lens elements of said objective lens to receive light from a light source and direct that light off-axis through lens elements of said objective lens to one or more light modulators;
- and
- a retro-focus lens arranged to receive modulated light directed through said retro-focus lens by said objective lens from said one or more light modulators, wherein said retro-focus lens projects said modulated light,
- wherein said objective lens and said retro-focus lens share one or more lens elements;
- and
- wherein said objective lens comprises two sets of optically coupled relay optics arranged such that light from said first mirror passes off-axis through a first set of relay optics to a first modulator block, ten through both sets of said relay optics to a second modulator block.
Dependencies are inferred from the claim text.