The present invention relates to an eyepiece optical system and device with a large field-of-view angle and high image quality, comprising a first lens group and a second lens group arranged successively along an optical axis from a human eye observing side to a micro display. The first lens group is composed of one or more lenses, and the second lens group comprises a Fresnel lens. The Fresnel lens comprises a Fresnel surface. By the use of a combination of a novel optical surface shape, i.e., the Fresnel surface shape, and traditional optical spherical and aspherical surface shapes, when focal lengths of various lenses and lens groups meet particular conditions, significant elimination of system aberration, reduction of the sensitivity of various optical components, and easy processing and assembly of the components can be achieved.

A head-mounted display device includes a first display portion disposed in front of a pupil of a viewer and displaying a first image, a second display portion disposed on an ear side of the viewer and diagonally in front of the pupil and displaying a second image, a first lens disposed between the pupil and the first display portion for projecting a first image onto the pupil, and a second lens disposed between the pupil and the second display portion for projecting a second image onto the pupil. The second lens is disposed adjacent to the first lens on the ear side of the viewer, and an optical axis of the first lens and an optical axis of the second lens intersect with each other at an angle ranging from 30 degrees to 80 degrees inclusive.

The present invention relates to an eyepiece optical system and device with a large field-of-view angle and high image quality, comprising a first lens group and a second lens group arranged successively along an optical axis from a human eye observing side to a micro display. The first lens group is composed of one or more lenses, and the second lens group comprises a Fresnel lens. The Fresnel lens comprises a Fresnel surface. By the use of a combination of a novel optical surface shape, i.e., the Fresnel surface shape, and traditional optical spherical and aspherical surface shapes, when focal lengths of various lenses and lens groups meet particular conditions, significant elimination of system aberration, reduction of the sensitivity of various optical components, and easy processing and assembly of the components can be achieved.

The present invention relates to an eyepiece optical system and device with a large field-of-view angle and high image quality, comprising a first lens group and a second lens group arranged successively along an optical axis from a human eye observing side to a micro display. The first lens group is composed of one or more lenses, and the second lens group comprises a Fresnel lens. The Fresnel lens comprises a Fresnel surface. By the use of a combination of a novel optical surface shape, i.e., the Fresnel surface shape, and traditional optical spherical and aspherical surface shapes, when focal lengths of various lenses and lens groups meet particular conditions, significant elimination of system aberration, reduction of the sensitivity of various optical components, and easy processing and assembly of the components can be achieved.

Provided are a compound lens and a display device including the same. The compound lens may improve image quality by providing a higher resolution in a central image region and a lower resolution in a peripheral image region. The compound lens includes a central lens portion and at least one peripheral lens portion, the at least one peripheral lens portion surrounds the central lens portion, the central lens portion has a first focal length, the at least one peripheral lens portion has a second focal length, and the first focal length is greater than the second focal length.

Provided are a compound lens and a display device including the same. The compound lens may improve image quality by providing a higher resolution in a central image region and a lower resolution in a peripheral image region. The compound lens includes a central lens portion and at least one peripheral lens portion, the at least one peripheral lens portion surrounds the central lens portion, the central lens portion has a first focal length, the at least one peripheral lens portion has a second focal length, and the first focal length is greater than the second focal length.

The invention relates to personal display devices and in particular an eyepiece therefor. The eyepiece is adapted for projecting an image from an image plane on one side of the eyepiece through an exit pupil on the opposite side of the eyepiece and comprises at least one stationary lens group and at least two movable lens groups being movable with respect to the stationary lens group along an optical axis between the image plane and the exit pupil. According to the invention, the lens groups are arranged in positive-negative-positive configuration and the movable lens groups are arranged to move along the optical axis between a first state providing a first field-of-view and a second state providing a second field-of-view smaller than the first field-of-view to the image plane. The invention allows for improving optical performance and user experience of personal display devices.

The invention relates to personal display devices and in particular an eyepiece therefor. The eyepiece is adapted for projecting an image from an image plane on one side of the eyepiece through an exit pupil on the opposite side of the eyepiece and comprises at least one stationary lens group and at least two movable lens groups being movable with respect to the stationary lens group along an optical axis between the image plane and the exit pupil. According to the invention, the lens groups are arranged in positive-negative-positive configuration and the movable lens groups are arranged to move along the optical axis between a first state providing a first field-of-view and a second state providing a second field-of-view smaller than the first field-of-view to the image plane. The invention allows for improving optical performance and user experience of personal display devices.

An optical magnifying combination lens, a head-mounted optical display system and a virtual reality display device are provided, wherein the optical magnifying combination lens is for utilization in a head-mounted virtual reality display device, comprising: a central area (A) and a peripheral area (B), wherein the central area (A) is a convex lens or a combination convex lens, and the peripheral area (B) is a focusing thin optical element; the central area (A) corresponds to main visual field imaging, and the peripheral area (B) corresponds to peripheral visual field imaging. The optical magnifying combination lens guarantees center image quality and enlarges edge view of human eyes, so as to enhance user immersion feelings.

An optical magnifying combination lens, a head-mounted optical display system and a virtual reality display device are provided, wherein the optical magnifying combination lens is for utilization in a head-mounted virtual reality display device, comprising: a central area (A) and a peripheral area (B), wherein the central area (A) is a convex lens or a combination convex lens, and the peripheral area (B) is a focusing thin optical element; the central area (A) corresponds to main visual field imaging, and the peripheral area (B) corresponds to peripheral visual field imaging. The optical magnifying combination lens guarantees center image quality and enlarges edge view of human eyes, so as to enhance user immersion feelings.