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US 10,948,776 B2Granted
Head-up display
AssigneesDENSO International America, Inc., Denso Corporation
InventorsOlga Adeyshvili, Kelly Farner
Life of this patent
Estimating the term…
Abstract
A head-up display including a display element illuminated by a plurality of light emitting elements. A lenslet is between a TIR lens array and the display element. The lenslet includes a first side facing the display element and a second side facing the TIR lens array. At least one of the first side and the second side includes a plurality of horizontal lenses or a plurality of vertical lenses configured to evenly distribute light from the TIR lens array across an eyebox generated by the head-up display and balance luminous uniformity and luminous intensity across the eyebox.
Claims20
A head-up display assembly comprising:
- a printed circuit board including a plurality of light emitting elements;
- a display element illuminated by the plurality of light emitting elements;
- a total internal reflection (TIR) lens array between the printed circuit board and the display element including a plurality of TIR lenses, each one of the plurality of TIR lenses is aligned with a different one of the plurality of light emitting elements to reflect and refract light emitted by the plurality of light emitting elements to the display element to illuminate the display element;
- and
- a lenslet between the TIR lens array and the display element, the lenslet including a first side facing the display element and a second side facing the TIR lens array, at least one of the first side and the second side including a plurality of horizontal lenses or a plurality of vertical lenses configured to evenly distribute light from the TIR lens array across an eyebox generated by the head-up display and balance luminous uniformity and luminous intensity across the eyebox;
- wherein distribution of light across the eyebox is controlled by varying at least one of radii of the horizontal lenses, radii of the vertical lenses, and height of the horizontal lenses.
3 more elements
A head-up display assembly comprising:
- a printed circuit board including a plurality of light emitting elements;
- a display element illuminated by the plurality of light emitting elements;
- a total internal reflection (TIR) lens array between the printed circuit board and the display element including a plurality of TIR lenses that reflect and refract light emitted by the plurality of light emitting elements to the display element to illuminate the display element;
- and
- a transparent lenslet between the TIR lens array and the display element through which light from the TIR lens array passes, the lenslet including a first side facing the display element and a second side facing the TIR lens array, formed on at least one of the first side and the second side are a plurality of horizontal lenses or a plurality of vertical lenses configured to evenly distribute light from the TIR lens array across an eyebox generated by the head-up display and balance luminous uniformity and luminous intensity across the eyebox;
- wherein distribution of light across the eyebox is controlled by varying at least one of radii of the horizontal lenses, radii of the vertical lenses, and height of the horizontal lenses.
3 more elements
A head-up display assembly comprising:
- a printed circuit board including a plurality of light emitting elements;
- a display element illuminated by the plurality of light emitting elements;
- a total internal reflection (TIR) lens array between the printed circuit board and the display element including a plurality of TIR lenses, each one of the plurality of TIR lenses is aligned with a different one of the plurality of light emitting elements to reflect and refract light emitted by the plurality of light emitting elements to the display element to illuminate the display element;
- and
- a lenslet between the TIR lens array and the display element, the lenslet including a first side facing the display element and a second side facing the TIR lens array, at least one of the first side and the second side including a plurality of horizontal lenses or a plurality of vertical lenses configured to evenly distribute light from the TIR lens array across an eyebox generated by the head-up display and balance luminous uniformity and luminous intensity across the eyebox;
- wherein the TIR lens array includes a plurality of TIR lenses arranged in linearly aligned rows and vertically staggered columns such that TIR lenses in adjacent rows are not aligned vertically with one another, each one of the plurality of TIR lenses including a first light transmission plane at a light input aperture aligned with a different one of the plurality of light emitting elements.
3 more elements
Dependencies are inferred from the claim text.