×

Luminaire for controlling locally unidirectional light

  • US 4,088,883 A
  • Filed: 05/27/1977
  • Issued: 05/09/1978
  • Est. Priority Date: 07/21/1975
  • Status: Expired due to Term
First Claim
Patent Images

1. A luminaire for displaying locally unidirectional light through zones of substantially equal illumination, comprising:

  • a high intensity discharge light source for emitting light;

    a reflector having a reflecting surface extending to a boundary substantially defining an aperture of the luminaire to reflect from the reflecting surface a portion of the light from the light source as locally unidirectional light through a first illumination zone of the aperture of the luminaire; and

    deviator means disposed before the reflector for preventing the direct passage of light from said light source to the first illumination zone of the aperture, the deviator means and the reflector each being individually shaped and disposed to cause a light source light ray reflected at the innermost part of the reflecting surface of the reflector to pass outward of the deviator means to be transmitted to the innermost part of the first illumination zone of the aperture and to cause a light source light ray reflected at the outermost part of the reflecting surface of the reflector means to be transmitted to the outermost part of the first illumination zone of the aperture, the deviator means being disposed to deviate light source light rays not reflected by the reflecting surface inward of the deviator means to a second illumination zone of the aperture of the luminaire, inward of the first illumination aperture zone, to provide substantially equal illumination in the first and second zones of the aperture of the luminaire.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×