Abstract: An optical device combining a spectacle function with an augmented reality function adapted to let an ambient light beam enter an eye of a user is provided. The optical device includes a spectacle lens and a diffractive optical element. The spectacle lens has a first surface facing the eye and a second surface facing away from the eye. The diffractive optical element is disposed on the first surface of the spectacle lens or between the first surface and the second surface of the spectacle lens. The diffractive optical element has a third surface facing the eye and a fourth surface facing away from the eye. The diffractive optical element is a diffractive optical film or a diffractive optical plate. An augmented reality device is also provided.

Abstract: A head mounted display including two display units is provided. Each display unit includes a display module and an optical assembly disposed in front of the display module. The display module includes a carrier body and a plurality of light-emitting elements. The carrier body includes a plurality of recesses. Each recess has a bottom surface and a reflective side wall connected to the bottom surface. A plurality of the light-emitting elements are located in the plurality of recesses. Each light-emitting element is disposed on the bottom surface of a corresponding recess. The optical assembly is disposed in front of the display module.

Abstract: A head mount display including two display units respectively disposed in front of eyes of a user is provided. Each of the display units includes a display device, a Fresnel lens, and a plurality of moth eye structures. The Fresnel lens is disposed between the display device and one of the eyes of the user. The plurality of moth eye structures are located on at least one surface between the display device and the one of the eyes of the user.

Abstract: A near-eye display apparatus including at least one display unit having a display element and an optical system is provided. The display element provides a light beam. The light beam includes a first light beam and a second light beam having different image information and different polarization states. The optical system includes a first semi-reflective element, a first polarization conversion element, and a polarization reflector, arranged in sequence along an optical axis. The polarization reflector allows a light beam having a first polarization state to pass and reflects a light beam having a second polarization state. The light path and the image distance of the second light beam are greater than the light path and the image distance of the first light beam, and the first light beam and the second light beam are emitted by at least one display unit to form a combined light beam.

Abstract: The disclosure provides an augmented reality (AR) device, a notebook, and smart glasses. The AR device includes a laser source, a spatial light modulator (SLM), and a hologram optical element (HOE). The laser source provides a coherent laser ray. The SLM provides a diffraction pattern solely corresponding to the coherent laser ray. When the SLM receives the coherent laser ray, the diffraction pattern diffracts the coherent laser ray as a hologram in response to the coherent laser ray. The HOE provides a concave mirror effect merely in response to a wavelength of the coherent laser ray, wherein the HOE receives the hologram and magnifies the hologram as a stereoscopic virtual image.

Abstract: A virtual reality display apparatus including at least a display and at least an optical assembly is provided. The display provides an image beam to a user's left eye or right eye. The optical assembly disposed on the transmission path of the image beam includes at least a Fresnel lens. Each of the display and the optical assembly both has a tilt angle relative to an upward direction, wherein the upward direction is the direction perpendicular to the user's horizontal sight line plane and defined as the direction pointing from the user's neck to the top of the user's head, and the tilt angle is within a range greater than 0 degree and is smaller than or equal to 20 degrees.

Abstract: A virtual reality display apparatus includes at least one display and at least one optical assembly. The display provides an image beam to a left eye or a right eye of a user. The optical assembly is disposed on a transmission path of the image beam and located between the left eye or the right eye of the user and the display. The optical assembly includes at least one Fresnel lens including ring structures surrounding an optical axis thereof. Each of the ring structures includes an effective refraction surface and an optically non-effective surface connected to each other and arranged along a radial direction. A junction of the effective refraction surface and the optically non-effective surface has a round angle. The radius of curvature of the round angles of at least some of the ring structures of the Fresnel lens is smaller than 10 ?m and larger than 0 ?m.

Abstract: A virtual reality display apparatus includes at least one display and at least one optical assembly. The display is configured to provide an image beam to a user's left eye or right eye. The optical assembly is disposed on a transmission path of the image beam. The optical assembly includes a first Fresnel lens which includes a plurality of ring structures surrounding an optical axis thereof. Each of the ring structures has an effective refraction surface and an optically non-effective surface connected to the effective refraction surface and disposed between the optical axis and the effective refraction surface. An average inclined angle of optically non-effective surfaces in a central area of the first Fresnel lens inclined with respect to the optical axis is smaller than an average inclined angle of optically non-effective surfaces in a peripheral area of the first Fresnel lens inclined with respect to the optical axis.

Abstract: A phase detection auto-focus-based (PDAF-based) positioning method and a system thereof are proposed, where the method is applicable to a positioning system having at least three image sensors and a processing device and includes the following steps. A target scene is detected by the first image sensor to generate first phrase detection data and thereby calculate a first object distance. The target scene is detected by the second image sensor to generate second phrase detection data and thereby calculate a second object distance. The target scene is detected by the third image sensor to generate third phrase detection data and thereby calculate a third object distance. Next, a positioning coordinate of the target point is obtained by the processing device according to the first object distance, the second object distance, and the third object distance.

Abstract: A virtual reality display apparatus includes at least one display and at least one optical assembly. The display provides an image beam to a left eye or a right eye of a user. The optical assembly is disposed on a transmission path of the image beam and located between the left eye or the right eye of the user and the display. The optical assembly includes at least one Fresnel lens including ring structures surrounding an optical axis thereof. Each of the ring structures includes an effective refraction surface and an optically non-effective surface connected to each other and arranged along a radial direction. A junction of the effective refraction surface and the optically non-effective surface has a round angle. The radius of curvature of the round angles of at least some of the ring structures of the Fresnel lens is smaller than 10 ?m and larger than 0 ?m.

Abstract: A virtual reality display apparatus includes at least one display and at least one optical assembly. The display is configured to provide an image beam to a user's left eye or right eye. The optical assembly is disposed on a transmission path of the image beam. The optical assembly includes a first Fresnel lens which includes a plurality of ring structures surrounding an optical axis thereof. Each of the ring structures has an effective refraction surface and an optically non-effective surface connected to the effective refraction surface and disposed between the optical axis and the effective refraction surface. An average inclined angle of optically non-effective surfaces in a central area of the first Fresnel lens inclined with respect to the optical axis is smaller than an average inclined angle of optically non-effective surfaces in a peripheral area of the first Fresnel lens inclined with respect to the optical axis.

Abstract: A virtual reality display apparatus including at least a display and at least an optical assembly is provided. The display provides an image beam to a user's left eye or right eye. The optical assembly disposed on the transmission path of the image beam includes at least a Fresnel lens. Each of the display and the optical assembly both has a tilt angle relative to an upward direction, wherein the upward direction is the direction perpendicular to the user's horizontal sight line plane and defined as the direction pointing from the user's neck to the top of the user's head, and the tilt angle is within a range greater than 0 degree and is smaller than or equal to 20 degrees.

Abstract: A processing system includes a rotary stage, at least one shaft, a rotation driver, a plurality of loading platforms, and a plurality of processing devices. The rotary stage includes two opposite end surfaces and a plurality of loading surfaces between the end surfaces. The shaft connects the end surfaces of the rotary stage. The rotation driver connects the shaft. The loading platforms are respectively disposed on the loading surfaces of the rotary stage. The processing devices are respectively disposed corresponding to the loading platforms.