Head-up display apparatus
First Claim
1. A head-up display apparatus for displaying an image to a viewer, comprising:
- a laser emitting an infrared beam;
means for producing a beam indicative of the image from the infrared beam;
a beam combiner; and
a non-linear optical element for converting the beam indicative of the image into a visible diffusion-harmonic beam and for directing the diffusion-harmonic beam to the viewer through said beam combiner, whereina visible image formed on said non-linear optical element and a landscape are combined by said beam combiner.
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Abstract
A method of observing information includes the steps of converting a radiation beam into a visible harmonic beam conforming to the information and observing the information by the harmonic beam. An apparatus for observing information therethrough includes a source for producing a radiation beam conforming to the information, and a converter for converting the radiation beam into a visible harmonic beam, with the information being observed with the aid of the harmonic beam. In addition, a head-up display apparatus includes a source for producing a radiation beam conforming to information to be displayed, a converter for converting the radiation beam into a visible harmonic beam, and a beam combiner for receiving the harmonic beam and directing it in a predetermined direction to effect the display of the information by the harmonic beam.
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Citations
26 Claims
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1. A head-up display apparatus for displaying an image to a viewer, comprising:
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a laser emitting an infrared beam; means for producing a beam indicative of the image from the infrared beam; a beam combiner; and a non-linear optical element for converting the beam indicative of the image into a visible diffusion-harmonic beam and for directing the diffusion-harmonic beam to the viewer through said beam combiner, wherein a visible image formed on said non-linear optical element and a landscape are combined by said beam combiner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for displaying an image to a viewer through a beam combiner, said method comprising the step of:
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generating a visible diffusion-harmonic beam indicative of the image by diffusing an infrared beam with a non-linear optical element; making the diffusion-harmonic beam incident on the pupil of the viewer through the beam combiner; and combining a visible image formed on the non-linear optical element and a landscape by the beam combiner. - View Dependent Claims (19, 20)
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21. A head-up display apparatus for displaying an image to a viewer, said apparatus comprising:
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a beam combiner having a volume type hologram through which the image is displayed; a semiconductor laser emitting an infrared beam; a non-linear optical element provided between said semiconductor laser and said hologram; a scanner, provided between said semiconductor laser and said non-linear optical element, for scanning said non-linear optical element with the infrared beam; and a controller for projecting the image on said non-linear optical element by modulating the intensity of the infrared beam to be scanned in accordance with a video signal and for directing a visible diffusion-harmonic beam corresponding to the image from said non-linear optical element toward said hologram, wherein a visible image formed on said non-linear optical element and a landscape are combined by said beam combiner. - View Dependent Claims (22, 23)
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24. A head-up display apparatus for displaying an image to a viewer, said apparatus comprising:
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a beam combiner having a volume type hologram through which the image is displayed; a non-linear optical element; and a laser array for projecting the image on said non-linear optical element with a plurality of infrared beams and for directing a visible diffusion-harmonic beam corresponding to the image from said non-linear optical element toward said volume type hologram, wherein a visible image formed on said non-linear optical element and a landscape are combined by said beam combiner. - View Dependent Claims (25, 26)
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Specification