Remotely coupled hybrid HUD backlight
First Claim
Patent Images
1. A head-up display assembly, comprising:
- a liquid crystal display element;
an optical mixing element in proximity to the liquid crystal display element;
a local light source physically mounted in proximity to the liquid crystal display element and the optical mixing element, the local light source operable to supply light to the optical mixing element for direct backlight illumination of the liquid crystal display element;
a remote light source mounted physically remote from the liquid crystal display element and the local light source, the remote light source operable to supply light; and
a fiber optic cable having a remote end coupled to the remote light source and a local end in proximity to the optical mixing element, the fiber optic cable configured to guide the light supplied from the remote light source directly to the optical mixing element.
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Abstract
A head-up display assembly includes a liquid crystal display element, a first backlight light source, and a remote backlight light source. The first light source is physically mounted in proximity to the liquid crystal display element, and is operable to directly backlight illuminate the liquid crystal display element. The remote light source mounted physically remote from the liquid crystal display element, and is operable to backlight illuminate the liquid crystal display element via a light guide.
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Citations
32 Claims
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1. A head-up display assembly, comprising:
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a liquid crystal display element; an optical mixing element in proximity to the liquid crystal display element; a local light source physically mounted in proximity to the liquid crystal display element and the optical mixing element, the local light source operable to supply light to the optical mixing element for direct backlight illumination of the liquid crystal display element; a remote light source mounted physically remote from the liquid crystal display element and the local light source, the remote light source operable to supply light; and a fiber optic cable having a remote end coupled to the remote light source and a local end in proximity to the optical mixing element, the fiber optic cable configured to guide the light supplied from the remote light source directly to the optical mixing element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of backlighting a head-up display assembly, comprising:
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providing light from a local light source physically mounted in proximity to a liquid crystal display element and an optical mixing element and operable to supply light to the optical mixing element for direct backlight illumination of the liquid crystal display element; and providing light from a remote light source mounted physically remote from the liquid crystal display element and the local light source directly to an optical mixing element via a fiber optic cable having a remote end coupled to the remote light source and a local end in proximity to the optical mixing element. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A head-up display assembly, comprising:
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a liquid crystal display element; an optical mixing element in proximity to the liquid crystal display element; a local light source physically mounted in proximity to the liquid crystal display element and the optical mixing element, the local light source operable to supply light to the optical mixing element for direct backlight illumination of the liquid crystal display element; a remote light source mounted physically remote from the liquid crystal display element and the local light source, the remote light source operable to supply light; a fiber optic cable having a remote end coupled to the remote light source and a local end in proximity to the optical mixing element, the fiber optic cable configured to guide the light supplied from the remote light source directly to the optical mixing element; and a controller operable to control the light produced in at least one of the local light source and the remote light source. - View Dependent Claims (30, 31, 32)
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Specification