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Wide-field head-up display (HUD) eyeglasses

  • US 20150036221A1
  • Filed: 08/04/2013
  • Published: 02/05/2015
  • Est. Priority Date: 08/04/2013
  • Status: Active Application
First Claim
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1. A HUD eyeglass system, for one eye or for each of both eyes, wherein said HUD eyeglass system is comprised of:

  • for each eye, an image projector with great depth of field and a very small (e.g. millimeter-sized) exit pupil,for each eye, an ocular relay lens or mirror having two conjugate foci such that, when the exit pupil of the projector is located at one focus and the other focus lies at or slightly anterior to the center of rotation of the eye, light is redirected from one focus toward the other so that some of it will always enter the pupil regardless of which way the eye is turned. In addition, the ocular relay also allows some light from the external scene to pass through it with little or no distortion and enter the eye.an eyeglass frame with lenses, said lenses of the eyeglasses being adjacent to, or identical with, the ocular relays. Since the low numerical aperture projector beam does not require corrective optics the design is compatible with prescription eyeglasses.

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