Droplet imaging device, droplet characteristic measuring device, droplet ejection device, droplet imaging method, droplet characteristic measuring method, and droplet ejection method

摘要

PROBLEM TO BE SOLVED: To perform imaging of a droplet which can easily measure the flight velocity of the droplet. In a droplet imaging apparatus, a light projection unit generates a first droplet and a second droplet that fly adjacent to each other on the same flight path backward and forward in the flight direction, and the direction of the flight path and Light is emitted in light paths along different directions. The imaging unit includes a first droplet and a second droplet that are respectively irradiated with light at a first time, and a first droplet and a second droplet that are respectively irradiated with light at a second time, Images are taken with the same field of view from a direction different from the direction. The time interval from the first time to the second time is the first distance at which the first droplet moves from the first time to the second time is the first droplet at the second time and the second liquid at the first time A distance relationship that is shorter than the second distance between the drops is set to be satisfied. [Selected figure] Figure 1