OPTICAL CONFIGURATIONS FOR HEAD WORN COMPUTING
Aspects of the present invention relate to optical systems in head worn computing.
1 . A head-worn computer, comprising:
a. an image light production facility including a platform including a plurality of multi-positional mirrors;
b. a lighting facility positioned along a first side of the platform and adapted to produce a cone of illumination light into a solid optic along an optical axis directed away from a front surface of the platform and towards a substantially flat surface of the solid optic that reflects the illumination light such that the front surface of the platform is substantially uniformly illuminated;
c. wherein each of the multi-positional mirrors has an “on” state to reflect a portion of the illumination light along a first optical axis that is on-line with an eye of a person wearing the head-worn computer thereby providing bright image pixels and an “off” state to reflect a portion of illumination light along a second optical axis off-line with an eye of a person wearing the head-worn computer thereby providing dark image pixels; and
d. an angled surface in the solid optic that transmits bright image pixel light while reflecting dark image pixel light , such that light from the “off” state mirrors is redirected toward a second side of the platform, thereby establishing a vertically compact system.
2 . The head-worn computer of claim 1 , further comprising:
a. A holographic mirror in-line with the optical axis in-line with the eye of the person wearing the head-worn computer and positioned on an angle with respect to a front surface of the platform to reflect the image light directly, without further reflections, towards the eye of the person wearing the head-worn computer.
3 . The head-worn computer of claim 2 , wherein the angle is greater than 45 degrees.
4 . The head-worn computer of claim 1 , wherein the holographic mirror is adapted to reflect a plurality of visible bandwidths of light and transmit substantially all other visible bandwidths other than the plurality of reflected visible bandwidths of light.
5 . The head-worn computer of claim 4 , wherein the holographic mirror transmits a majority of surrounding environment light incident on the holographic mirror.
6 . The head-worn computer of claim 4 , wherein the lighting facility produces a narrow bandwidth of light with a quantum dot illumination facility.
7 . The head-worn computer of claim 4 , wherein the lighting facility produces a narrow bandwidth of light with a light emitting diode lighting facility.
8 . The head-worn computer of claim 4 , wherein the lighting facility produces a diffuse cone of light with a backlit illumination facility.
9 . The head-worn computer of claim 1 , further comprising:
b. A notch mirror in-line with the optical axis in-line with the eye of the person wearing the head-worn computer and positioned on an angle with respect to a front surface of the platform to reflect the image light directly towards the eye of the person wearing the head-worn computer.
10 . The head-worn computer of claim 1 , further comprising an eye imaging camera positioned to image the eye of the person wearing the head-worn computer by capturing light reflected off a subset of the plurality of mirrors wherein the subset of the plurality of mirrors are in a second state.