Actuator aligned multichannel projector assembly
An actuator aligned multi-channel projector assembly generates image light using a plurality of projectors. A projector includes a plurality of optical components in optical series and one or more actuators. The plurality of optical components include a light source and a plurality of optical elements. The light source generates first light. The plurality of optical elements project the first light. The first light is output from the projector and combined with a second to form an image presented via a display element of a headset to a user. The one or more actuators adjust a position of at least one optical component of the plurality of optical components relative to another optical component in order to compensate for misalignment of a portion of the image formed from the first light relative to a portion of the image formed from the second light.
1 . A projector, comprising:
a plurality of optical components in optical series, the plurality of optical components including:
a light source configured to generate first light in a first color,
at least one lens that is configured to project the first light, wherein the first light is output from the projector and combined with a second light in a different color to form an image presented via a display element of a headset to a user, wherein the plurality of optical components includes a plurality of lenses that includes the at least one lens, the plurality of lenses includes a varifocal lens, and the varifocal lens is located farther from the light source than any remaining lens of the plurality of lenses; and
one or more actuators configured to adjust a position of at least one optical component of the plurality of optical components relative to another optical component of the plurality of optical components in order to compensate for misalignment of a portion of the image formed from the first light relative to a portion of the image formed from the second light.
2 . The projector of claim 1 , wherein the one or more actuators are configured to move one or more of the optical components along an optical axis of the projector.
3 . The projector of claim 1 , wherein the one or more actuators are configured to move one or more of the optical components perpendicular to an optical axis of the projector.
4 . The projector of claim 1 , wherein the plurality of optical components includes a plurality of lenses that includes the at least one lens, and the one or more actuators are configured to simultaneously move the plurality of lenses.
5 . The projector of claim 1 , wherein the first light is incoupled into a waveguide, and a position of the projector relative to the waveguide is adjusted to align the portion of the image formed from the first light with the portion of the image formed from the second light.
6 . The projector of claim 1 , wherein the varifocal lens has a larger optical power than other lens of the plurality of lenses.
7 . The projector of claim 1 , wherein a controller is configured to:
determine a target position for the at least one optical component based in part on a temperature of a portion of the projector; and
instruct the one or more actuators to adjust the position of the at least one optical component to the target position.
8 . The projector of claim 7 , further comprising a temperature sensor that is configured to determine the temperature.
9 . A method comprising:
generating, via a first optical component of a plurality of optical components of a projector, a first light in a first color from a first light source, wherein the plurality of optical components are in optical series;
projecting, via one or more optical components of the plurality of optical components, the first light, wherein the first light is output from the projector and combined with a second light in a different color from a second light source to form an image presented via a display element of a headset to a user, wherein the plurality of optical components includes a plurality of lenses that includes a varifocal lens, and the varifocal lens is located farther from the light sources than any remaining lens of the plurality of lenses; and
adjusting, via one or more actuators, a position of at least one optical component, of the plurality of optical components, relative to another optical component of the plurality of optical components in order to compensate for misalignment of a portion of the image formed from the first light relative to a portion of the image formed from the second light.
10 . The method of claim 9 , wherein adjusting, via the one or more actuators, the position of the at least one optical component comprises:
moving, via the one or more actuators, one or more of the optical components along an optical axis of the projector.
11 . The method of claim 9 , wherein adjusting, via the one or more actuators, the position of the at least one optical component comprises:
moving, via the one or more actuators, one or more of the optical components perpendicular to an optical axis of the projector.
12 . The method of claim 9 , wherein adjusting, via the one or more actuators, the position of the at least one optical component comprises:
moving simultaneously, via the one or more actuators, the plurality of lenses.
13 . The method of claim 9 , wherein the first light is incoupled into a waveguide, and a position of the projector relative to the waveguide is adjusted to align the portion of the image formed from the first light with the portion of the image formed from the second light.
14 . The method of claim 9 , further comprising:
adjusting an optical power of the varifocal lens.
15 . The method of claim 14 , wherein the varifocal lens has a larger optical power than other lens of the plurality of lenses.
16 . The method of claim 9 , wherein adjusting, via the one or more actuators, the position of at least one optical component, further comprises:
determining a target position for the at least one optical component based in part on a temperature of a portion of the projector; and
instructing the one or more actuators to adjust the position of the at least one optical component to the target position.
17 . A non-transitory computer readable medium configured to store program code instructions, when executed by a processor, cause the processor to perform steps comprising:
generating, via a first optical component of a plurality of optical components of a projector, a first light in a first color from a first light source, wherein the plurality of optical components are in optical series;
projecting, via one or more optical components of the plurality of optical components, the first light, wherein the first light is output from the projector and combined with a second light in a different color from a second light source to form an image presented via a display element of a headset to a user, wherein the plurality of optical components includes a plurality of lenses that includes a varifocal lens, and the varifocal lens is located farther from the light sources than any remaining lens of the plurality of lenses; and
adjusting, via one or more actuators, a position of at least one optical component, of the plurality of optical components, relative to another optical component of the plurality of optical components in order to compensate for misalignment of a portion of the image formed from the first light relative to a portion of the image formed from the second light.
18 . The computer readable medium of claim 17 , the steps further comprising:
adjusting an optical power of the varifocal lens.
19 . The computer readable medium of claim 17 , wherein adjusting, via the one or more actuators, the position of at least one optical component, further comprises:
determining a target position for the at least one optical component based in part on a temperature of a portion of the projector; and
instructing the one or more actuators to adjust the position of the at least one optical component to the target position.