Reflective type virtual reality optical system

The invention discloses a reflective type virtual reality optical system which comprises a diaphragm (100).A first lens (1) which is fixed relative to the diaphragm (100) and a second lens (2) which can move in a front-rear mode relative to the diaphragm (100) are arranged on one side of the diaphragm (100).A reflecting element (3) and a display screen (200) are arranged on one side of the second lens (2) far away from the diaphragm (100), light emitted by the display screen (200) is reflected through the reflecting element (3) to enter the second lens (2) and the first lens (1) and then reaches the diaphragm (100), the first lens (1) is a bi-convex aspheric lens having positive focal power, the second lens (2) is a meniscus aspheric lens having negative focal power, and the focal power of the reflecting element (3) is 0.The reflective type virtual reality optical system is simple in structure, high in definition, large in field angle, small in size and light in weight.