The present invention relates to a reflective eyepiece optical system and a head-mounted near-to-eye display device. The system includes: a first lens group, a first optical element and a second lens group for transmitting and reflecting light from a miniature image displayer; the second lens group includes an optical reflection surface, and the optical reflection surface is the optical surface farthest from a human eye viewing side in the second lens group; the optical reflection surface is concave to human eyes; the first optical element reflects the light refracted by the first lens group to the second lens group, and then transmits the light refracted, reflected and again refracted by the second lens group to the human eyes.

The present invention relates to a reflective eyepiece optical system and a head-mounted near-to-eye display device. The system includes: a first optical element and a second optical element arranged successively in an incident direction of an optical axis of human eyes, and a first lens group located on an optical axis of a miniature image displayer. The first optical element is used for transmitting and reflecting an image light from the miniature image displayer. The second optical element includes an optical reflection surface. The first optical element reflects the image light refracted by the first lens group to the second optical element, and then transmits the image light reflected by the second optical element to the human eyes.

This application provides a zoom assembly, including a first refraction component and a first lens apparatus. The first refraction component is configured to change a transmission path of light, and the first refraction component includes a first surface, a second surface, a third surface, and a first reflection structure. The three surfaces of the first refraction component are all transmission surfaces. An optical axis of the first lens apparatus is perpendicular to the second surface of the first refraction component. The first reflection structure is attached to the third surface, and is configured to receive light transmitted by one of the transmission surfaces and reflect the light to another transmission surface.

Eye-tracked head-mounted displays are provide which, in one aspect, may utilize the same optics for eyetracking and image viewing, with a selected portion of the optics used for an eyetracking optical path and a selected portion of the display optics used for an image viewing optical path.

A projection optical system according to the present disclosure includes an intermediate image forming lens group and a concave mirror. The intermediate image forming lens group forms an intermediate image of an image of a projection target. The concave mirror is disposed on an optical path after the intermediate image is formed. The concave mirror forming a projection image on a projection surface. The intermediate image forming lens group and the concave mirror are disposed in order from side of the image of the projection target toward side of the projection surface. The intermediate image forming lens group includes a movable group that travels on an optical axis to perform focus adjustment. The movable group includes a concave lens having an aspherical surface.

Techniques are disclosed for optical distortion reduction in projection systems for scanning projection and/or lithography. A projection system includes an illumination system configured to generate illumination radiation for generating an image of an object to be projected onto an image plane of the projection system. The illumination system includes a field omitting illumination condenser configured to receive the illumination radiation from a radiation source and provide a patterned illumination radiation beam to generate the image of the object, wherein the patterned illumination radiation beam comprises an omitted illumination portion corresponding to a ridge line of a roof prism disposed within an optical path of the projection system.

A variable magnification optical system consists of, in order from an object side, a first optical system remaining stationary during changing magnification and a second optical system including a plurality of lens groups moving during changing magnification. The first optical system includes a first mirror and a second mirror having reflective surfaces arranged to face each other. The first mirror is an optical element having a power at a position closest to the object side on an optical path and has a reflective surface concave toward the object side. The second mirror has a reflective surface convex toward the image side. An intermediate image is formed between the second mirror and the second optical system.

An optical system includes a partial reflector having an average optical reflectance of at least 30% in a desired plurality of wavelengths, a display panel disposed to emit image light toward the partial reflector, and a multilayer reflective polarizer disposed proximate the partial reflector. The multilayer reflective polarizer is curved about two orthogonal axes and includes at least one layer substantially optically uniaxial at at least one location. The image light is transmitted by the multilayer reflective polarizer after it is first reflected by the multilayer reflective polarizer. A quarter wave retarder may be disposed between the reflective polarizer and the partial reflector.

A zooming control device includes a filter assembly, a metalens device spaced apart from the filter assembly, and a polarization selection device between the filter assembly and the metalens device. The filter assembly is configured to select a wavelength of light exiting the filter assembly and includes an optical device having an adjustable refractive index that varies with an electric current applied to the optical device. The polarization selection device is configured to select a polarization state of the light exiting the filter assembly and passing through the polarization selection device.

An optical subsystem of a near-eye display system provides for projecting light of a virtual image of image content to an eye location, and provides for collecting light of the virtual image onto an exit pupil on a surface proximate to an outer surface of an eye when at the eye location. A subpupil modulator within an aperture in cooperation with the optical subsystem provides for forming a plurality of subpupils on a curved surface within the exit pupil, and provides for less than all of the light of the virtual image associated with one or more less than all of the plurality of subpupils to be projected to the eye location.