Head-mounted and head-up displays utilizing organic light emitting diodes that emit by stimulated emission
Disclosed herein are head-mounted and other display assemblies that utilize organic light emitting diodes as image sources. In the organic light emitting diodes utilized in these display assemblies light is emitted by stimulated emission. As a results of this, the organic light emitting diodes utilized emit light vertically within a narrow cone about axes normal to the planes of the organic light emitting diodes. This narrow cone of emission results in greatly reduced light insertion losses when light transits from the organic light emitting diodes through the display assemblies and as a result increased energy efficiency in the operation of the display assemblies.
1 . A display system that overlays electronically generated images over physical real world views wherein the display system comprises:
an organic light emitting diode (OLED) comprising electroluminescent material wherein said OLED is constructed to produce emissions of photons that are retained in the OLED and that stimulate further emissions of photons that are emitted from the OLED electroluminescent material and further wherein the light emitted by the OLED electroluminescent material is over ninety percent generated by that OLED-stimulated emission and the light emitted by the electroluminescent material is circularly polarized;
an optical combiner that overlays the light emitted by the organic light emitting diode with ambient light from the display system surroundings; and
at least one polarizing beam splitter.
2 . The display system of claim 1 , wherein the combiner comprises a partially reflective and partially transmissive mirror.
3 . The display system of claim 1 , wherein the display system is a head-mounted display system.
4 . The display system of claim 1 , wherein the display system is a head-up display system.
5 . A head-mounted display system that comprises:
an organic light emitting diode (OLED) comprising electroluminescent material wherein said OLED is constructed to produce emissions of photons that are retained in the OLED and that stimulate further emissions of photons that are emitted from the OLED electroluminescent material and further wherein the light emitted by the OLED electroluminescent material is over ninety percent generated by that OLED-stimulated emission and the light emitted by the electroluminescent material is circularly polarized;
at least one lens that projects graphic information from the organic light emitting diode to at least one eye of a head-mounted display wearer.
6 . The head-mounted display system of claim 5 , further comprising at least one mirror that projects graphic information from the organic light emitting diode to at least one eye of a head-mounted display wearer.
7 . The head-mounted display system of claim 6 , wherein the organic light emitting diode emits circularly polarized light.
8 . A head-mounted display system that comprises:
an organic light emitting diode (OLED) comprising electroluminescent material wherein said OLED is constructed to produce emissions of photons that are retained in the OLED and that stimulate further emissions of photons that are emitted from the OLED electroluminescent material and further wherein the light emitted by the OLED electroluminescent material is over ninety percent generated by that OLED-stimulated emission and the light emitted by the electroluminescent material is circularly polarized; and
at least one mirror that projects graphic information from the organic light emitting diode to at least one eye of a head-mounted display wearer.