Eyepiece optical system

• Main Author: LIAO MINGYAN
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2021
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

The invention relates to the technical field of lenses. The invention discloses an eyepiece optical system, which sequentially comprises first to fifth lenses along an optical axis from an eye side to a display side, the first lens is a convex-concave lens with a positive refractive index, the second lens and the fourth lens are convex lenses with a positive refractive index, the third lens is a concave-convex lens with a positive refractive index, the fifth lens is a concave lens with a negative refractive index, and the eye side surfaces and the display side surfaces of the first lens to the third lens are aspheric surfaces; and the fourth lens and the fifth lens are glued with each other and are glass lenses. The optical system has the advantages of being large in field angle, large in exit pupil distance, large in exit pupil diameter, high in resolution ratio, small in distortion, good in imaging quality, small in number of lenses, small in size and good in mass production yield. 本发明涉及镜头技术领域。本发明公开了一种目镜光学系