A head mounted display for a user that uses a display screen to produce images. The head mounted display includes a frame. The frame has a pair of lenses. The pair of lenses has their optical centers biased away from their physical centers. The head mounted display includes a strap which attaches to the frame and fits about the user's head to hold the frame to the user's head. A method for viewing images by a user.

This application discloses a camera apparatus, including a photosensitive chip, a first lens mechanism, a second lens mechanism, and a light filter, where the first lens mechanism is arranged between the photosensitive chip and the second lens mechanism, the second lens mechanism includes a diffractive-refractive lens and a refractive index compensation layer, the refractive index compensation layer is overlapped with the diffractive-refractive lens, the light filter is located between the photosensitive chip and the first lens mechanism, ambient light passing through the second lens mechanism can be refracted and diffracted by the diffractive-refractive lens, and the refracted and diffracted ambient light can be projected onto the photosensitive chip sequentially passing through the first lens mechanism and the light filter.

The present invention is directed to an optical device for augmented reality using total internal reflection, the optical device including: an optical means for transmitting at least part of real object image light toward the pupil of an eye of a user; wherein a total internal reflection space configured to transfer augmented reality image light, output from an image output unit, toward the pupil of the eye of the user is formed inside the optical means; and wherein the total internal reflection space is filled with a medium having an index of refraction lower than the index of refraction of the optical means, and the augmented reality image light transferred to the total internal reflection space through the inside of the optical means is reflected by total internal reflection on the total internal reflection space and then transferred toward the pupil of the eye of the user.

A device for controlling an endoscope to rotate, relating to the technical field of non-destructive inspection, comprises a display device, a control assembly, a coiler and a lens, and further comprises a drive assembly disposed at a joint of the coiler and the lens, and electrically connected to the control assembly to allow users to adjust the angle of the lens by controlling the drive assembly. The drive assembly comprises: a low-speed drive element disposed at an end, away from the display device, of the coiler, and a rotating lever connected to an output shaft of the low-speed drive element. The lens is disposed on a side, away from the low-speed drive element, of the rotating lever. The low-speed drive element is a low-speed motor. The lens comprises a lateral lens and a front lens. The device for controlling an endoscope to rotate has the following advantages: the lens can be rotated to a suitable inspection position without manual operation or other auxiliary location devices, the display angle can be adjusted, using is convenient, and operation is easy.

A detection system (10) and a detection method (2000) are disclosed herein. The system includes a PIR sensor (12) positioned in an area comprising a plurality of sub-areas, the motion sensor comprising an optical device (22) having a plurality of sub-lenses (26, 28, 30), each sub-lens of the plurality of sub-lenses having a field of view (FOV) corresponding to a sub-area of the plurality of sub-areas. The system further includes at least one processor (32) coupled to the PIR sensor and configured to: activate the plurality of sub-lenses to generate a total sensor FOV comprising each FOV of the plurality of sub-lenses; and dynamically control the plurality of sub-lenses to subdivide the total sensor FOV, wherein the subdivided sensor FOV is smaller than the total sensor FOV.

A thin-film optical device disclosed herein includes a metalens able to modulate the phase of incident light. The metalens includes a thin-film layer having a first index of refraction, an embedded layer within the thin-film layer, and the embedded layer having a second index of refraction greater than or equal to 1.5 and less than or equal to 3.0 times the first index of refraction. The embedded layer may fill a plurality of holes formed on the thin film layer, with the depth, width, and spacing of holes all contribute to modulating the phase of light traveling through the metalens.

Motion detectors can include a housing defining a first cavity and an aperture extending through the housing. A circuit board can be disposed in the first cavity. An infrared sensor and a light sensor can be mounted on the circuit board. A lens can extend across the aperture. A wall can extend between the lens and the circuit board such that the wall, the lens, and the circuit board define a second cavity at least partially within the first cavity and the second cavity contains the infrared sensor and the light sensor.

Motion detectors can include a housing defining a first cavity and an aperture extending through the housing. A circuit board can be disposed in the first cavity. An infrared sensor and a light sensor can be mounted on the circuit board. A lens can extend across the aperture. A wall can extend between the lens and the circuit board such that the wall, the lens, and the circuit board define a second cavity at least partially within the first cavity and the second cavity contains the infrared sensor and the light sensor.

An octave bandwidth, achromatic metalens configured to operate in light wavelengths having a range of approximately 640 nm to 1200 nm.

An octave bandwidth, achromatic metalens configured to operate in light wavelengths having a range of approximately 640 nm to 1200 nm.