Configurable light emission by selective beam-sweeping
An opto-electronic system includes a laser operable to produce a laser beam; an optical element including two or more beam-shaping portions, each of the two or more beam-shaping portions having a different optical property; a beam deflector arranged to sweep the laser beam across the optical element to produce output light; and electronics communicatively coupled with the laser, the beam deflector, or both the laser and the beam deflector. The electronics are configured to cause selective impingement of the laser beam onto a proper subset of the two or more beam-shaping portions of the optical element to modify one or more optical parameters of the output light.
1 . An opto-electronic system comprising:
a laser operable to produce a laser beam;
an optical element comprising two or more beam-shaping portions, each of the two or more beam-shaping portions having a different optical property;
a beam deflector arranged to sweep the laser beam across the optical element to produce output light; and
electronics communicatively coupled with the laser, the beam deflector, or both the laser and the beam deflector, wherein the electronics are configured to cause selective impingement of the laser beam onto a proper subset of the two or more beam-shaping portions of the optical element to modify one or more optical parameters of the output light, and
wherein the electronics are configured to cause the laser beam to sweep along at least one continuous path on the proper subset of the two or more beam-shaping portions.
2 . The opto-electronic system of claim 1 , wherein the two or more beam-shaping portions comprise distinct beam-shaping portions.
3 . The opto-electronic system of claim 2 , wherein the distinct beam-shaping portions are arrayed in two dimensions.
4 . The opto-electronic system of claim 1 , wherein the electronics are configured to:
obtain data indicating the proper subset of the two or more beam-shaping portions, wherein the proper subset of the two or more beam-shaping portions has optical properties that provide a selected optical parameter; and
cause selective impingement of the laser beam onto the proper subset of the two or more beam-shaping portions by control of the laser, the beam deflector, or both the laser and the beam deflector.
5 . The opto-electronic system of claim 1 , wherein the electronics comprise a laser controller configured to:
switch the laser to be on when the beam deflector is in a configuration to deflect the laser beam onto the proper subset of the two or more beam-shaping portions; and
switch the laser to be off when the beam deflector is in a configuration to deflect the laser beam onto another beam-shaping portion of the optical element that is distinct from the proper subset of the two or more beam-shaping portions.
6 . The opto-electronic system of claim 5 , wherein the other beam-shaping portion is arranged between distinct sections of the proper subset of the two or more beam-shaping portions.
7 . The opto-electronic system of claim 1 , wherein the electronics comprise a laser controller configured to:
alter an emission power of the laser between different on-state powers as the beam deflector sweeps the laser beam, such that different sections of the proper subset of the two or more beam-shaping portions are impinged with different laser beam powers.
8 . The opto-electronic system of claim 1 , wherein the electronics comprise a deflector controller configured to:
alter a sweep range of the beam deflector from a first sweep range to a second, different sweep range, wherein the second sweep range deflects the laser beam onto the proper subset of the two or more beam-shaping portions.
9 . The opto-electronic system of claim 1 , comprising a lens arranged between the beam deflector and the optical element, the lens configured to collimate the laser beam deflected by the beam deflector to produce parallel laser beams for different deflection directions, the parallel laser beams oriented towards the optical element.
10 . The opto-electronic system of claim 1 , wherein the optical element comprises a single printed optic that includes the two or more beam-shaping portions.
11 . The opto-electronic system of claim 1 , wherein the different optical properties of the two or more beam-shaping portions comprise different focal distances.
12 . The opto-electronic system of claim 1 , wherein the one or more optical parameters comprise a shape of the output light as projected onto an object.
13 . The opto-electronic system of claim 1 , wherein the one or more optical parameters comprise a projection direction of the output light.
14 . The opto-electronic system of claim 1 , wherein the one or more optical parameters comprise a fan angle of the output light.
15 . The opto-electronic system of claim 1 , wherein the one or more optical parameters comprise a pattern of structured light in the output light.
16 . The opto-electronic system of claim 15 , wherein the pattern comprises at least one of a two-dimensional phase-shift pattern, a two-dimensional dot pattern, or a stripe pattern.
17 . The opto-electronic system of claim 1 , wherein the one or more optical parameters comprises a polarization of the output light.
18 . The opto-electronic system of claim 1 , wherein the output light is configured to form one or more illumination lines, and
wherein the one or more optical parameters comprise at least one of a number of the one or more illumination lines, positions of the one or more illumination lines, lengths of the one or more illumination lines, or spacings between adjacent illumination lines of the one or more illumination lines.
19 . The opto-electronic system of claim 1 , wherein the two or more beam-shaping portions comprise diffractive optical elements.
20 . The opto-electronic system of claim 1 , wherein the two or more beam-shaping portions comprise optical diffusers.
21 . The opto-electronic system of claim 1 , wherein the beam deflector comprises a micro-electromechanical system (MEMS) mirror.
22 . The opto-electronic system of claim 1 , comprising a camera sensor arranged to image an object onto which the output light is projected.
23 . The opto-electronic system of claim 22 , wherein the electronics comprise an image processor configured to:
receive an image captured by the camera sensor;
determine a pattern of the output light projected onto the object; and
based on the pattern, determine a surface topology of the object.