Abstract:
A hand cart includes a handlebar, a handlebar holder, a handlebar sensor, and a drive mechanism. The handlebar has a right grip and a left grip at ends of the handlebar in a lengthwise direction. The handlebar holder supports the handlebar while permitting displacement of the handlebar relative to the handlebar holder within a specific range. The handle sensor is configured and arranged to sense the displacement of the handlebar. The drive mechanism is configured to perform power assist according to sensing result of the handle sensor.
Abstract:
A projector device includes: a plurality of laser light sources each of which output light of a different color component; a control unit that controls the intensity of the light output by each of the laser light sources; a display control unit that projects an image on a combiner by guiding the light output by each of the laser light sources to the combiner; and a prediction unit that predicts which laser light source among the laser light sources has the shortest remaining life, wherein the control unit reduces the intensity of the light output by the laser light source predicted to have the shortest remaining life to below a predetermined normal intensity.