| 摘要 |
Provided is an endoscope apparatus including an illumination unit and an image acquisition unit, wherein the illumination unit has a light emission unit at which a light source is installed, and a mask configured to shield some of the light emitted from the light emission unit, and when an irradiation angle of the light measured when an optical axis of the light emission unit is set to 0° is set to theta, a function of the irradiation angle theta representing angular distribution of the light emitted from the light emission unit is set to f(theta), and a maximum angle defined to be vignetted by the mask when the optical axis of the light emission unit is set to 0° is set to theta1, energy V of the light passing through the mask represented by the following equation 1 is 35 mW or less. [Equation 1] V=2pi∫thetaf(theta)dtheta where (0@theta@theta1)(Equation 1)
|
