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US 12,607,867 B2Granted
Fisheye lens dot projector
AssigneeLumentum Operations LLC
InventorsJames Chen, Michael Miller, Lijun Zhu, Vincent V. Wong, Russell Latham, Benjamin Kesler
Life of this patent
Estimating the term…
Abstract
In some implementations, a dot projector optic may include a collimating lens; a fisheye lens; and a dot aberration correction element disposed between the collimating lens and the fisheye lens. An input to the fisheye lens, from the dot aberration correction element, may be associated with a first field of view angle. An output from the fisheye lens may be associated with a second field of view angle that is larger than the first field of view angle.
Claims20
A dot projector optic, comprising:
- a collimating lens;
- a fisheye lens,
- wherein the fisheye lens includes a telecentric fisheye lens;
- and
- a dot aberration correction element, separate from the collimating lens and disposed between the collimating lens and the fisheye lens, wherein an input to the fisheye lens, from the dot aberration correction element, is associated with a first field of view angle, and wherein an output from the fisheye lens is associated with a second field of view angle that is larger than the first field of view angle.
2 more elements
An optical system, comprising:
- a plurality of emitters;
- and
- a plurality of sets of optical elements aligned to the plurality of emitters, the plurality of sets of optical elements including:
- a first set of optical elements,
- wherein the first set of optical elements includes a collimating lens, and
- wherein the first set of optical elements includes a tiling diffractive optical element (DOE) at a lens stop position, and
- wherein the tiling DOE forms beams from the plurality of emitters into a set of tiles that are interlaced with one or more orders suppressed;
- a second set of optical elements,
- wherein the second set of optical elements includes a dot aberration correction element;
- and
- a third set of optical elements,
- wherein the third set of optical elements includes an angle expander.
9 more elements
An optical system, comprising:
- a vertical cavity surface emitting laser (VCSEL) to emit a beam;
- and
- a set of optical elements aligned to the VCSEL, the set of optical elements including a group 1 of one or more optical elements, a group 2 of one or more optical elements, and a group 3 of one or more optical elements,
- wherein the group 1 includes a collimating lens and a diffractive optical element,
- wherein the group 2 includes a dot aberration correction element,
- wherein the group 3 includes a fisheye lens,
- wherein the group 2 is disposed between the group 1 and the group 3, and
- wherein an output of the optical system is a random or pseudo-random arrangement of dots with a field of view of at least 100 degrees by 100 degrees when the beam is projected on a flat surface.
5 more elements
Dependencies are inferred from the claim text.