The present disclosure relates to a virtual reality display device. The virtual reality display device includes: a main lens, a semi-reflective lens, a first display screen, a second display screen, a zoom assembly and an eye tracking camera. The main lens is arranged in front of the first display screen and perpendicular to a first direction. The semi-reflective lens is arranged between the main lens and the first display screen. The eye tracking camera points to an eyeball position. The second display screen faces the semi-reflective lens, and light emitted from the second display screen is reflected by the semi-reflective lens and then propagates along the first direction. The zoom assembly is arranged on a front side of the second display screen. The second display screen is configured to display an image based on an eyeball focus position detected by the eye tracking camera.

A display device includes: a light source unit that outputs laser light; a light-guide optical system that forms a plurality of optical paths of the laser light; an optical path switch element that switches an optical path of the laser light to any one of the plurality of optical paths; an optical member that forms a single optical path in a subsequent stage of the plurality of optical paths; and a projection mirror that forms a projection image to be projected on a screen by scanning the laser light that passed through the single optical path. The plurality of optical paths includes an optical path for low luminance and an optical path for high luminance which make the laser light have different luminance. The optical path switch element is disposed on an optical path between the light source unit and the projection mirror.

A system and method are provided for super-resolution imaging beyond the Rayleigh spatial resolution limit of an optical system. In the context of a system, first and second pinhole assemblies are configured to be controllably positioned. The first and second pinhole assemblies define respective pinholes and being configured to be backlit. The system also includes a collimating lens configured to collimate at least a portion of the signals passing through the respective pinholes of the first and second pinhole assemblies. The system further includes an amplitude/phase mask configured to provide amplitude and phase modulation to signals received from the collimating lens and an imaging lens configured to focus the signals received from the amplitude/phase mask upon an image plane to permit objects to be separately identified.

An endoscope includes a plurality of illuminating optical systems, an objective optical system, and an optical-path splitting member. The optical-path splitting member has an optical element which forms a first optical path and a second optical path, and an optical-path length of the first optical path differs from an optical-path length of the second optical path. Illumination light is irradiated to an object from the plurality of illuminating optical systems. The objective optical system has an object-side incidence surface which is located nearest to the object, and each of the plurality of illuminating optical systems has an object-side emergence surface which is located nearest to the object. Each of the object-side emergence surfaces is located on an image side of the object-side incidence surface, and following conditional expression (1) is satisfied:
2.0<Dmin/OPLdiff<50  (1).

A light emitting or detecting apparatus comprises a catadioptric lens body including a spherical lens containing an integral reflector and defining first and second conjugate focal planes relative to a subject plane. A pair of light emitters or a pair of Sight detectors are arranged respectively at the first and second conjugate focal planes to detect or emit light travelling along a common axis to or from the subject plane.

The invention is relates to systems and methods for high dynamic range (HDR) image capture and video processing in mobile devices. Aspects of the invention include a mobile device, such as a smartphone or digital mobile camera, including at least two image sensors fixed in a co-planar arrangement to a substrate and an optical splitting system configured to reflect at least about 90% of incident light received through an aperture of the mobile device onto the co-planar image sensors, to thereby capture a HDR image. In some embodiments, greater than about 95% of the incident light received through the aperture of the device is reflected onto the image sensors.

In various embodiments a module for generating an interference pattern for producing a digital holographic image is provided. The module comprises an adaptive lens arrangement configured to receive, from a microscope, an object wave of an intermediate image of a sample to be examined, and to generate an adapted object wave of the intermediate image of the sample by reducing a curvature of the object wave of the intermediate image; a reference input interface configured to receive an optical fiber delivering a reference wave from the coherent light source to the module and an interference arrangement configured to generate an interference pattern to be received by an imaging sensor arrangement, wherein the interference pattern is based on the adapted object wave and the reference wave from a coherent light source; wherein a position of the reference input interface of the module is configured to be adjustable with respect to at least two directions (x-y), wherein at least one of the adjustable directions is in parallel to a propagation direction of the reference wave leaving the optical fiber.

Disclosed is a beam splitter assembly for being arranged in a non-collimated part of a beam path of a microscope with a first plate, which is tilted with respect to an optical axis by a tilting angle, and with a second plate, which is tilted with respect to the optical axis by a tilting angle, wherein the first plate and/or the second plate serve(s) for coupling radiation in and/or out. The beam splitter assembly can include a wedge angle of the first plate, a wedge angle of the second plate and the tilting angle of the second plate, which are coordinated with one another in such a way that an astigmatism on the optical axis and a linear field dependence of the astigmatism in an object field are corrected. Also disclosed are a method for dimensioning a beam splitter assembly and a microscope.

Disclosed are high-density energy directing devices and systems thereof for two-dimensional, stereoscopic, light field and holographic head-mounted displays. In general, the head-mounted display system includes one or more energy devices and one or more energy relay elements, each energy relay element having a first surface and a second surface. The first surface is disposed in energy propagation paths of the one or more energy devices and the second surface of each of the one or more energy relay elements is arranged to form a singular seamless energy surface. A separation between edges of any two adjacent second surfaces is less than a minimum perceptible contour as defined by the visual acuity of a human eye having better than 20/40 vision at a distance from the singular seamless energy surface, the distance being greater than the lesser of: half of a height of the singular seamless energy surface, or half of a width of the singular seamless energy surface.

Systems and method for generating real images via retroreflection are provided. An image source may project light beams, which are received at a beam splitter. The beam splitter, positioned between a retroreflector and a viewing area, may reflect the light beams toward the retroreflector. In turn, the light beams may be reflected back from the retroreflector and toward and through the beam splitter to generate a real image that appears to a viewer to be floating in the viewing area. A controller may control the image source to adjust the real image based on a control parameter detected by at least one sensor.