The light-cured resin of hardness distribution measuring device and hardness distribution measurement method

摘要

PROBLEM TO BE SOLVED: To measure a hardness distribution of a photocurable resin in a depth direction relative to the surface.SOLUTION: A hardness distribution measurement device 10 of photocurable resin according to the embodiment comprises a confocal optical system 12, a first scan part 50, and a second scan part 52. The confocal optical system 12 includes a light source 14, a dichroic mirror 22, an object lens 24, an imaging lens 30, a confocal pinhole member 32, and a detector 34. The first scan part 50 relatively moves a confocal pinhole 48 in an optical axis direction of the imaging lens 30 so that a condensing point of the imaging lens 30 passes through the confocal pinhole 48. The second scan part 52 relatively moves the photocurable resin 40 in a height direction of the photocurable resin 40 relative to the condensing point of the object lens 24 so that the position of the condensing point of the object lens 24 relatively moves in a depth direction relative to the surface of the photocurable resin 40.SELECTED DRAWING: Figure 2