US 12,292,592 B2
Head-mounted display devices with non-rectangular backlight
Joshua Mark Hudman, Issaquah, WA (US); and Douglas Vanderwel, Kent, WA (US)
Assigned to Valve Corporation, Bellevue, WA (US)
Filed by Valve Corporation, Bellevue, WA (US)
Filed on Nov. 20, 2023, as Appl. No. 18/514,679.
Application 18/514,679 is a continuation of application No. 17/711,856, filed on Apr. 1, 2022, granted, now 11,846,798.
Prior Publication US 2024/0184035 A1, Jun. 6, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 1/16 (2006.01); F21V 8/00 (2006.01)
CPC G02B 6/0061 (2013.01) [G02B 6/003 (2013.01); G02B 6/0036 (2013.01); G02B 6/0043 (2013.01); G02B 6/0068 (2013.01); G06F 1/163 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A backlight assembly, comprising:
a light guide comprising a front surface, a rear surface opposite the front surface, and a perimeter side surface that spans between the front surface and the rear surface;
a light source positioned adjacent the perimeter side surface of the light guide, the light source operative to emit light into the light guide;
a display panel receiving light emitted by the light guide; and
an optics system for receiving and focusing light from a portion of the display panel,
wherein a surface area of the front surface of the light guide is sized and dimensioned to match the size and dimension of a focused portion of the display panel from which light is received and focused by the optics system such that light is provided by the light guide to only the focused portion of the display panel.