COMPONENT OBSERVATION APPARATUS

PROBLEM TO BE SOLVED: To provide a component observation apparatus capable of clearly observing a component by two bright and dark aspects, i.e. an aspect for observing a dark component in a bright background and an aspect for observing a bright component in a dark background, without disposing a light shielding plate between light sources.SOLUTION: The component observation apparatus includes: a first light source 1 for emitting visible light with a wavelength of 400 nm or more to the front side of a component P; a second light source 2 for emitting UV light with a wavelength less than 400 nm to the front side of the component P; a phosphor 3 arranged on the rear side of the component P and configured to radiate fluorescent light of a visible region when the UV light is made incident and to transmit the visible light without radiating fluorescent light when the visible light is made incident; a camera 8 on which fluorescent light radiated from the phosphor 3 and the visible light reflected by the component P are made incident; a filter 6 arranged on the way of an incident optical path to the camera 8 and configured to transmit the visible light and the fluorescent light but not to transmit the UV light; and a rear body 5 arranged on the rear side of the phosphor 3 and capable of absorbing the visible light which has transmitted the phosphor 3.