| 摘要 |
The present invention relates to an optical system and an operating method thereof which can observe (or irradiate light through a light irradiation device) front, rear, left, and right surfaces as well as a perpendicular surface of a sample in a constant square angle or can change a position for observation (or the light irradiation in the light irradiation device) by forming a square optical path using an optical system without a movement of the sample or a movement of eyes (or a light source of a light irradiation device) of a microscope observer in a microscope for observing the sample or the light irradiation device and the like for irradiating the light such as a laser on the sample. |
