A smart phone or tablet includes laser diodes configured to be pulsed and generate near-infrared light between 700-2500 nanometers. Lenses direct the light to a sample. A detection system includes a photodiode array with pixels coupled to CMOS transistors, and is configured to receive light reflecte
A smart phone or tablet includes laser diodes configured to be pulsed and generate near-infrared light between 700-2500 nanometers. Lenses direct the light to a sample. A detection system includes a photodiode array with pixels coupled to CMOS transistors, and is configured to receive light reflected from the sample, to be synchronized to the light from the laser diodes, and to perform a time-of-flight measurement of a time difference between light from the laser diodes and light reflected from the sample. The detection system is configured to convert light received while the laser diodes are off into a first signal, and light received while at least one laser diodes is on, which includes light reflected from the sample, into a second signal. The smart phone or tablet is configured to difference the first signal and the second signal and to generate a two-dimensional or three-dimensional image using the time-of-flight measurement.
대표청구항▼
1. A smart phone or tablet, comprising: an array of laser diodes configured to generate light having one or more optical wavelengths, wherein at least a portion of the one or more optical wavelengths is a near-infrared wavelength between 700 nanometers and 2500 nanometers, and wherein at least a por
1. A smart phone or tablet, comprising: an array of laser diodes configured to generate light having one or more optical wavelengths, wherein at least a portion of the one or more optical wavelengths is a near-infrared wavelength between 700 nanometers and 2500 nanometers, and wherein at least a portion of the array of laser diodes is configured to be pulsed;one or more lenses configured to receive a portion of the light from the array of laser diodes and to direct the portion of the light from the array of laser diodes to a sample;a detection system comprising a photodiode array with a plurality of pixels coupled to CMOS transistors;wherein the detection system is configured to receive at least a portion of light reflected from the sample, and wherein the detection system is configured to be synchronized to the light from the at least a portion of the array of laser diodes;wherein the detection system is configured to perform a time-of-flight measurement by measuring a time difference between the generated light from the at least a portion of the array of laser diodes and the at least a portion of light reflected from the sample;wherein the detection system is further configured to: receive light while the array of laser diodes is off and convert the received light into a first signal; andreceive light while at least a part of the array of laser diodes is on and convert the received light into a second signal, the received light including at least some of the at least a portion of the light reflected from the sample;and wherein the smart phone or tablet is configured to difference the first signal and the second signal and to generate a two-dimensional or three-dimensional image using at least a portion of the time-of-flight measurement; andwherein the smart phone or tablet further comprises a wireless receiver, a wireless transmitter, a display, a voice input module, and a speaker. 2. The smart phone or tablet of claim 1, wherein the at least a portion of the array of laser diodes has a modulation frequency, and wherein the detection system is configured to use a lock-in technique that detects the modulation frequency. 3. The smart phone or tablet of claim 2, wherein the detection system is configured to perform filtering at the modulation frequency. 4. The smart phone or tablet of claim 3, wherein the modulation frequency has a phase, and wherein the detection system is configured to lock onto the phase. 5. The smart phone or tablet of claim 1, wherein at least a part of the array of laser diodes comprises a laser diode bar, and wherein the detection system further comprises an infrared camera. 6. The smart phone or tablet of claim 1, wherein the detection system further comprises one or more filters to select a fraction of the one or more optical wavelengths. 7. A smart phone or tablet, comprising: an array of laser diodes configured to generate light having one or more optical wavelengths, wherein at least a portion of the one or more optical wavelengths is a near-infrared wavelength between 700 nanometers and 2500 nanometers, and wherein at least a portion of the array of laser diodes is configured to be pulsed;one or more lenses configured to receive a portion of the light from the array of laser diodes and to direct the portion of the light from the array of laser diodes to a sample;a detection system comprising a photodiode array with a plurality of pixels coupled to CMOS transistors;wherein the detection system is configured to receive at least a portion of light reflected from the sample, and wherein the detection system is configured to be synchronized to the at least a portion of the array of laser diodes;wherein the detection system is further configured to perform a time-of-flight measurement by measuring a time difference between the generated light from the at least a portion of the array of laser diodes and the at least a portion of light reflected from the sample;wherein the smart phone or tablet is configured to generate a two-dimensional or three-dimensional image using at least a portion of the time-of-flight measurement; andwherein the smart phone or tablet further comprises a wireless receiver, a wireless transmitter, a display, a voice input module, and a speaker. 8. The smart phone or tablet of claim 7, wherein the detection system is further configured to: receive light while the array of laser diodes is off and convert the received light into a first signal; andreceive light while at least a part of the array of laser diodes is on and convert the received light into a second signal, the received light including at least a part of the at least a portion of the light reflected from the sample;andwherein the smart phone or tablet is configured to difference the first signal and the second signal to generate the two-dimensional or three-dimensional image. 9. The smart phone or tablet of claim 7, wherein the at least a portion of the array of laser diodes has a modulation frequency, and wherein the detection system is configured to use a lock-in technique that detects the modulation frequency. 10. The smart phone or tablet of claim 9, wherein the detection system is configured to perform filtering at the modulation frequency. 11. The smart phone or tablet of claim 9, wherein the modulation frequency has a phase, and wherein the detection system is configured to lock onto the phase. 12. The smart phone or tablet of claim 7, wherein at least a part of the array of laser diodes comprises a laser diode bar, and wherein the detection system further comprises an infrared camera. 13. The smart phone or tablet of claim 7, wherein the detection system further comprises one or more filters to select a fraction of the one or more optical wavelengths. 14. The smart phone or tablet of claim 7, wherein the detection system further comprises LIDAR. 15. The smart phone or tablet of claim 7, wherein the at least a portion of the two-dimensional or three-dimensional image is combined with global positioning system information. 16. A smart phone or tablet, comprising: an array of laser diodes configured to generate light having one or more optical wavelengths, wherein at least a portion of the one or more optical wavelengths is a near-infrared wavelength between 700 nanometers and 2500 nanometers, and wherein at least a portion of the array of laser diodes is configured to be pulsed at a modulation frequency;one or more lenses configured to receive a portion of the light from the array of laser diodes and to direct the portion of the light from the array of laser diodes to a sample;a detection system comprising a photodiode array with a plurality of pixels coupled to CMOS transistors;wherein the detection system is configured to receive at least a portion of light reflected from the sample, wherein the detection system is configured to be synchronized to the at least a portion of the array of laser diodes, and wherein the detection system is configured to use a lock-in technique that detects the modulation frequency;wherein the detection system is further configured to perform a time-of-flight measurement by measuring a time difference between the generated light from the at least a portion of the array of laser diodes and the at least a portion of light reflected from the sample;wherein the smart phone or tablet is configured to generate a two-dimensional or three-dimensional image using at least a portion of the time-of-flight measurement; andwherein the smart phone or tablet further comprises a wireless receiver, a wireless transmitter, a display, a voice input module, and a speaker. 17. The smart phone or tablet of claim 16, wherein the detection system is further configured to: receive light while the array of laser diodes is off and convert the received light into a first signal; andreceive light while at least a part of the array of laser diodes is on and convert the received light into a second signal, the received light including at least a part of the at least a portion of the light reflected from the sample;andwherein the smart phone or tablet is configured to difference the first signal and the second signal to generate the two-dimensional or three-dimensional image. 18. The smart phone or tablet of claim 16, wherein the detection system is configured to perform filtering at the modulation frequency, and wherein the modulation frequency has a phase, and wherein the detection system is configured to lock onto the phase. 19. The smart phone or tablet of claim 16, wherein at least a part of the array of laser diodes comprises a laser diode bar, and wherein the detection system further comprises an infrared camera. 20. The smart phone or tablet of claim 16, wherein the detection system further comprises one or more filters to select a fraction of the one or more optical wavelengths.
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