Abstract: A diopter-adjustable eyepiece optical system and a head-mounted display device. The eyepiece optical system comprises a first lens group (T1), a second lens group (T2), and a third lens group (T3) which are sequentially arranged from a human eye (EYE) observation side to a micro image display (IMG) in an optical axis direction; the effective focal length of the first lens group (T1) is a positive value; the effective focal length of the second lens group (T2) is a negative value; and an optical surface (6), close to the micro image display (IMG), in the third lens group (T3) protrudes towards a direction of the micro image display (IMG). The first lens group (T1) is fixed relative to human eyes (EYE); the second lens group (T2) and the third lens group (T3) move towards a direction of the human eyes (EYE) along the optical axis.

Abstract: An optical eyepiece system capable of superimposing optical paths and a head-mounted display device. The optical eyepiece system comprises an image surface (103), an auxiliary optical path (T), a spectroscope (101), and a main optical path (A) which are sequentially connected; an optical axis of the image surface (103) coincides; an optical axis of the main optical path (A) is mutually perpendicular to the optical axis of the auxiliary optical path (T); and the optical axis of the main optical path (A) is reflected by the spectroscope (101) and is superimposed with the auxiliary optical path (T) transmitted by the spectroscope (101). An image displayed on the micro image display (102) and a physical object image captured by an object shape observation and photographing apparatus are displayed in a superimposing mode, and characteristics of being clearer in imaging, small in distortion, and high in imaging quality are achieved.

Abstract: The disclosure relates to a method for controlling vehicle battery swapping, a computer system for implementing the method, a computer storage medium, and a vehicle.

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

Abstract: 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.

Abstract: 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.

Abstract: The present invention relates to an eyepiece optical structure, an eyepiece system and an optical device. The structure includes a lens group T1 on which an optical binary surface pattern and a Fresnel surface pattern distributed in a direction from a human eye viewing side to a display device side are arranged. The lens group T1 has a focal length of F, and a clear aperture of D, and F and D satisfy the following relational expression: 1.9 ? F/D. The optical binary surface pattern has a focal length of F2, and F and F2 satisfy the following relational expression: -120 < F2/F < 10.78. In the present invention, a combination of the novel optical surface pattern and the Fresnel surface pattern is adopted, and the focal length of each lens and lens group achieves great elimination of system aberration under the condition of meeting specific conditions.

Abstract: The disclosure relates to a method and system for detecting a parking state of a vehicle in a battery swap platform, and a battery swap platform including such a system. The method includes the following steps: a) using a panoramic camera apparatus to obtain an image of the battery swap platform, where the vehicle is parked on the battery swap platform; b) inputting the image into a model, where the model is constructed based on a plurality of sets of training data including a sample image and labeling information, and the labeling information depicts whether the vehicle reaches a preset position of the battery swap platform in the sample image; and c) processing the image based on the model to determine whether the vehicle is parked in the preset position of the battery swap platform.

Abstract: 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 long an incident direction of an optical axis of human eyes and a first lens group located on in optical axis of in 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 one optical reflect on surface. The first optical element reflects the image light refracted b the first tens group to the second optical element, and then transits the image light reflected by the second optical element to the human eyes. The effective focal lengths of the first sub-lens group and the second sub-lens group are a combination of positive and negative.

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

Abstract: 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.

Abstract: 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.

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

Abstract: 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 along an incident direction of an optical axis of human eyes, and a first lens group located on an optical axis of an 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 one 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. The effective focal lengths of the first sub-lens group and the second sub-lens group are a combination of positive and negative.

Abstract: 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, and a first optical element and a second lens group for transmitting and reflecting a light from a miniature image displayer; the second lens group includes one optical reflection surface which is an optical surface farthest from a human eye viewing side in the second lens group; the optical reflection surface is concave to a human eye viewing direction; 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 then refracted by the second lens group to human eyes; and the focal length combination among respective lenses is negative, positive and positive.

Abstract: 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 which are arranged sequentially along 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; wherein the first optical element and the second optical element are used for transmitting and reflecting an image light from the miniature image displayer; the first optical element reflects the image light passing through 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.

Abstract: 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 along an incident direction of an optical axis of the human eye, and a first lens group located on an optical axis of an miniature image displayer. 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 eye. The effective focal lengths of the first sub-lens group, the second sub-lens group and the third sub-lens group are a combination of positive, negative and positive. The optical path is effectively folded, the overall size of the optical system is reduced, aberrations are largely eliminated, and a visual experience effect of high liveness is achieved.

Abstract: An eyepiece optical system and a head-mounted display are disclosed. The optical system comprises a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged coaxially and successively along an optical axis direction from an eye viewing side to a displayer side, wherein a focal length of the second lens is f2, a focal length of a lens group formed by the third lens and the fourth lens is f34, a focal length of the fifth lens is f5, a distance from a display of the optical system to the fifth lens proximate to a surface of the display is fd, and a total system length is fw. When a particular relation is satisfied, on the basis of cost reduction and weight reduction, significant elimination of system aberration as well as high-quality optical indices can be achieved.

Abstract: 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.

Abstract: 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.