Self-Mixing Optical Proximity Sensors for Electronic Devices
First Claim
1. An electronic device, comprising:
- a housing;
an adjustable component in the housing;
an incoherent self-mixing sensor in the housing; and
control circuitry in the housing that is configured to gather a sensor measurement with the incoherent self-mixing sensor and that is configured to adjust the adjustable component using the sensor measurement.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic device may have optical sensors. Control circuitry may use sensor measurements in controlling adjustable components and taking other actions. The optical sensors may be self-mixing sensors such as incoherent self-mixing sensors. One or more sensors may be used in gathering sensor measurements. In configurations in which an electronic device contain multiple self-mixing sensors, multi-wavelength measurements can be gathered using incoherent light sources in the sensors that operate a set of different wavelengths. The light source of each incoherent self-mixing sensor may be a superluminescent light-emitting diode, a resonant cavity light-emitting diode, or other amplified or non-amplified spontaneous emission source. Optical systems such as lenses in a housing for an electronic device may be aligned with the self-mixing sensors. Self-mixing sensors may serve as proximity sensors, sensors for detecting touch input, sensors for measuring spectrums associated with targets of unknown materials, displacement sensors, or other sensors.
-
Citations
19 Claims
-
1. An electronic device, comprising:
-
a housing; an adjustable component in the housing; an incoherent self-mixing sensor in the housing; and control circuitry in the housing that is configured to gather a sensor measurement with the incoherent self-mixing sensor and that is configured to adjust the adjustable component using the sensor measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An electronic device, comprising:
-
incoherent self-mixing sensors each having a respective light source configured to emit light at a different respective wavelength; an adjustable component; and control circuitry configured to adjust the adjustable component using sensor data from the incoherent self-mixing sensors. - View Dependent Claims (12, 13, 14)
-
-
15. An electronic device comprising:
-
an adjustable component with a movable member; an incoherent self-mixing sensor having a diode configured to emit light that illuminates the movable member; and control circuitry configured to adjust the adjustable component using a sensor measurement from the incoherent self-mixing sensor. - View Dependent Claims (16, 17, 18, 19)
-
Specification