Patent ID: 6097538
Filing Date: 2000-08-01
Classification: G02B

Abstract:
An observation lens barrel for use in a microscope, comprising:a main body for receiving a light beam applied from the microscope and including an image to be observed;an observation optical system provided in the main body and extending at right angles to a direction in which the light beam from the microscope is focused; anda first optical element provided in the main body, for receiving the light beam from the microscope and emitting a light beam to the observation optical system,wherein said main body has a first port provided on a side opposing the microscope, with the first optical element located between the first port and the microscope, and a second port provided on a side opposing the observation optical system, with the first optical element located between the second port and the observation optical system, andwherein the first optical element comprises an optical element configured to guide the light beam applied from the microscope to the first port, and to guide to the observation optical system a light beam applied from the second port which crosses the light beam guided to the first port.