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Robot vacuum cleaner

Robot vacuum cleaners move about automatically by measuring the position of walls and furniture, as well as the distance to surrounding obstacles. To do this measurement, it applies the principle of TOF (time-of-flight) and triangulation using light. A laser diode or LED is used for the light emitter device, and an image sensor or photo IC is used for the photosensor.

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Recommended products

Hamamatsu offers a selection of products suitable for applications in robot vacuum cleaners.

Light emitter

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Infrared LED L14096-0085GL

Peak emission wavelength: 850 nm. This COB package LED is a surface mount type with a lens. It realizes narrow directivity.

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Infrared LED L12756

Peak emission wavelength: 870nm. It realizes high output and high-speed response at a low price.

Photosensor

Applications Distance measurement method Photosensor
Collision prevention, falling prevention Direct TOF Si PIN photodiode
Si APD
Photosensor with front-end IC
Indirect TOF Photo IC for rangefinder
Triangulation One-dimensional PSD
CMOS linear image sensor
Scanning measurement, mapping Indirect TOF Distance linear image sensor
Triangulation CMOS linear image sensor

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Si PIN photodiode S13773

Si PIN photodiode featuring high-speed response (500 MHz).

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Si APDs

Si APDs suitable for detecting light in the 700/800/900 nm band.

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Photosensors with front-end IC

This compact devices integrate optical sensors, such as photodiodes and APD, with the front-end IC.

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Photo IC for rangefinder S13021-01CT

One channel distance measurement photo IC for indirect TOF.

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Distance linear image sensor S12973-01CT

This one-dimensional distance image sensor uses the TOF method to measure distance. This is a 64 pixel type.

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One-dimensional PSD

This sensor detects the incident position of light for triangulation.

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CMOS linear image sensor S13131 series

A Compact and thin linear image sensor. Hamamatsu offers 512, 736, and 1536 pixel types.

 

Measurement example (distance image sensor)

It rotates a unit with a built-in distance linear image sensor and a laser to do omnidirectional distance measurement of the room.

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