Optical system for forming optical path of oblique angle and method thereof

摘要

An optical system is used in a microscope which is provided to observe a sample or in a light emitting device which applies a beam of light such as a laser beam onto a sample. The optical system can form an oblique path of light so that without shifting the sample or the position of the eyes of the observer (or the position of a light source of the light emitting device), the observer can observe (in the case of the light emitting device, it can apply light onto) not only a vertical top side the sample but also a front, rear, left or right side of the sample, or the position of a portion of the sample to be observed (in the case of the light emitting device, a portion onto which light is applied) can be varied.

主权项

1. An optical system capable of observing an object at different angles or positions without movement of an object and an observer, comprising:
a first sub-system forming a first light path from a first point to a second point; and a second sub-system forming a second light path from the second point to a third point,
wherein the first sub-system is configurable such that the light from the first point traveling at a first polar angle with respect to a fixed axis, which is defined by a perpendicular line between the first point to the second point, is transmitted to the second point at a second polar angle,wherein the second sub-system is configured to adjust a length of the second light path in response to a change in a length of the first light path in the first sub-system such that a combined length of the first light path and second light path remains constant,wherein the first sub-system includes a first lens for forming collimated light rays from the light entering the first sub-system from the first point, the first lens being configurable in a tilted orientation with respect to the fixed axis so that the light from the first point passing through the first lens travels in the first polar angle with respect to the fixed axis,wherein the optical system is configured as a microscope to observe the object in such a way that the light from the object sequentially passes through the first lens, the first sub-system, the second sub-system and a second lens, in which the first lens is an objective that is capable of being tilted within a predetermined range of polar angles relative to the fixed axis and rotatably positioned about the fixed axis in a predetermined azimuth angle.