An optical device includes a lightguide and a display at a top of a head mountable frame. The display is oriented toward an eye-side of the optical device. A reflector is positioned at an eye-side of the optical device and directs light into the lightguide. This orientation and arrangement of components reduces light leaking out of the optical device. The lightguide includes curved first and second surfaces. The device reflects light through the curved first surface to a user eye for augmented reality vision. A head mountable frame supports the display, the reflector, and the lightguide.

An optical system includes at least one first display module, at least one second display module, and a first optical element. The first optical element includes a first light incident surface, a second light incident surface, and a viewing surface. The first light incident surface is configured to transmit imaging light emitted from the at least one first display module into the first optical element and refract it onto the second light incident surface. The second light incident surface is configured to transmit imaging light emitted from the at least one second display module into the first optical element and refract it onto the viewing surface, and reflect the imaging light transmitted into the first optical element through the first light incident surface onto the viewing surface. The viewing surface is configured to transmit the imaging light emitted from all display modules to a human eye.

A folded-path optical component usable as an ocular lens in a near-eye display is disclosed. The folded-path optical component includes a cavity formed by a pair of spaced apart coaxial curved reflective polarizers, and a partial reflector in the cavity for splitting an impinging light beam to propagate along two optical paths ending at an exit pupil of the optical component. Each optical path includes a reflection from one of the reflective polarizers and a transmission through the other one of the reflective polarizers.

An optical device includes a spatial light modulator configured to project image light, a diffractive lens, and a polarization-selective reflector. The spatial light modulator defines an optical axis. The diffractive lens is positioned to receive the image light from the spatial light modulator. The polarization-selective reflector is positioned to receive the image light from the diffractive lens. The polarization-selective reflector having a polarization-selective reflective surface in an orientation that is non-perpendicular to the optical axis of the spatial light modulator.

According to the present disclosure, an optical lens assembly includes at least two optical lens elements and at least one reflective element. The reflective element is made of a plastic material, the reflective element includes a reflective coating membrane, and the reflective coating membrane is disposed on a surface of the reflective element. The reflective coating membrane includes at least three coating layers of different materials, the at least three coating layers are respectively made of a first material, a second material and a third material, the first material mainly includes silver, the second material mainly includes titanium, the third material mainly includes chromium oxides, and the coating layer made of the first material and the coating layer made of the second material are disposed between the coating layer made of the third material and the reflective element.

Optical imaging systems configured to image object space in multiple fields-of-view (FOVs)—front and lateral FOVs—and form corresponding images that are co-oriented and co-directional regardless of mutual repositioning of the object and imaging systems. Images formed with such optical systems in which FFOV— and LFOV-image portions are co-directional. Co-directionality of formed images is achieved due to direct imaging with a system utilizing a specific involute reflective surface or as a result of radial spatial redistribution of irradiance of an initial image(s), formed with a system devoid of an involute reflective surface, while maintaining aspect ratios of dimensions of corresponding pixels of initial and transformed images. Methodology of transformation of images utilizing radial redistribution of image irradiance.

A method for designing an optical system creating at least two optical images with different field of view on a common image plane. The optical system includes at least one common optical element receiving the rays of light from the object, at least one splitting element to separate the rays of light in a primary and at least one secondary optical path, at least one reflecting element to orient the rays, at least one element forming an image in the primary path and at least one element forming an image in each secondary path. When an image sensor is located in the common image plane, at least one digital image file can be created from the optical images. Further image processing of the at least one digital image is possible in order to further improve the output from the system.

The present invention refers to a surround-view imaging system for time-of-flight (TOF) depth sensing applications and a time-of-flight sensing based collision avoidance system comprising such an imaging system. The imaging system for time-of-flight depth sensing applications comprises a lens system, adapted for imaging angles of view (AOV) larger than 120° in an image on an image plane; a sensor system, adapted to convert at least a part the image in the image plane into an electronic image signal; and an evaluation electronics, adapted to analyze the electronic image signal and to output resulting environmental information; wherein the lens system and/or the sensor system are designed for specifically imaging fields of view (FOV) starting at zenithal angles larger than 60°.

A head-mounted display includes a frame having conductivity, a first display device and a second display device supported by the frame, a cable shielded by a conductive cloth, and a screwing structure configured to interpose the cable between the frame and the first and second display devices. The screwing structure holds a conducting region of the frame and the conductive cloth in a state where the conducting region of the frame and the conductive cloth are electrically coupled.

An optical module includes an image element, a projection lens, a prism mirror, a wedge type optical element, a barrel configured to support the prism mirror and the wedge type optical element, a first combiner configured to deflect image light emitted from the wedge type optical element, a first dust proof member configured to cover a both end region of the projection lens, the prism mirror, and the barrel in a third axis, and cover an end region of the projection lens and the prism mirror located on the prism mirror side in a second axis, and a second dust proof member provided between the projection lens and the barrel.