| 摘要 |
PURPOSE:To change the focus distance of the converging lens of the irradiating part of a laser light corresponding to the change of the focus distance of the objective of a microscope body by changing the focus distances of an objective optical system and a converging optical system to irradiate the laser light into an observation visibility. CONSTITUTION:A microscope body 9 is in a binocular system, a laser irradiating part 10 is provided, and the irradiating part 10 irradiates the laser light in an observation range to be observed by the microscope body 9. The laser light is light-conducted from a laser light oscillator 11 which is a body different from the microscope body 9 by means of an optical fiber cable 12, an optical axis is folded by, for example, a prism, and it is made incident on an eyepiece part 13. Between an objective 16 of an optical unit 15 and the irradiating part 10, a beam splitter 17 is provided in being inclined at the angle of 45 deg. to the optical axis, a converging lens 19 as a converging optical system 18 is fixed in the unit 15, and an arrangement is executed so that the focus of the lens 19 can be made to coincide with the focus of the lens 16. |
