Abstract: A head mounted display includes a body portion, a display panel, a lens module, an infrared transmitter, and an infrared receiver. The display panel is provided in the body portion. The lens module is disposed in front of the display panel, and includes an outer frame, a lens and a mounting portion. The lens is provided in the outer frame. The mounting portion is disposed at the periphery of the outer frame. A reference line is connected between the viewing point and the mounting portion. The infrared transmitter is disposed on the mounting portion. The outer frame is provided with a light exit surface between the viewing point and the mounting portion. The infrared transmitter projects a light along the reference line via the light exit surface which limits the exit angle of the light. The infrared receiver is disposed on the body portion for receiving the light.

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: An image output method for an image capturing device includes capturing a first test image at a first time point and a second test image at a second time point, calculating a first image feature value of the first test image and a second image feature value of the second test image, and determining whether to output images generated by the image capturing device according to the first image feature value of the first test image and the second image feature value of the second test image.

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 chroma aberration compensation method using sub-pixel shifting for use in a head-mounted display is provided. The method includes the steps of: obtaining image data from a host, wherein the image data includes a left-eye image and a right-eye image; obtaining a refraction characteristics curve corresponding to a left-eye lens and a right-eye lens and calculating a resolution of the image data; calculating a distance and a relative direction between each sub-pixel in each color channel of the image data and a center of the image data; adjusting an offset value of each sub-pixel in each color channel of the image data according to the calculated distance and relative direction; performing a sub-pixel shifting compensation process to adjust a sub-image corresponding to each color channel to generate an output image according to the offset value of each sub-pixel in each color channel of the image data.

Abstract: An image output method for an image capturing device includes capturing a first test image at a first time point and a second test image at a second time point, calculating a first image feature value of the first test image and a second image feature value of the second test image, and determining whether to output images generated by the image capturing device according to the first image feature value of the first test image and the second image feature value of the second test image.

Abstract: The invention provides a helmet-mounted display, including: a camera capturing an environment image outside the helmet-mounted display; an infrared sensor sensing the pupil position of a human eye; an image processor calculating the visual field of the human eye according to the pupil position and cropping a visual field image corresponding to the visual field from the environment image; and a display panel displaying the visual field image.

Abstract: An image processing method for processing a first image captured by a camera is provided, in which the first image is retrieved; and an output image is output to an image output circuit after the first image is modified to the output image, wherein a result value of each pixel of the output image is zero or a value generated by subtracting the threshold value from the brightness value of each pixel of the first image.

Abstract: The present invention provides an image-capturing device including a lens with an adjustable focal length, a photosensitive unit, a memory unit, a processing unit, and a display unit. The photosensitive unit obtains a plurality of images from a scene via the lens, and the images correspond to different focal lengths. The memory unit is configured to store the images corresponding to the different focal lengths. The processing unit obtains a target image according to a selected frame position, wherein the corresponding focal length of the target image focuses on an object of the scene, and the object in the target image is located at the selected frame position. The display unit is configured to output the obtained target image.

Abstract: A lens adjusting device (100) includes an optical module (10) and a driver module (20). The driver module includes a seat (22), at least one magnet (24) and at least one winding (26). The optical module is rotatably fixed on the seat. The magnet is fixed on the optical module. The magnet and the winding are positioned at one side of the optical module. A variable current is applied to the winding, and a magnetic field is formed at ends of the winding. The magnetic forces between the magnetic field and the magnet drives the optical module to rotate.

Abstract: A lens adjusting device (100) includes an optical module (10) and a driver module (20). The driver module includes a seat (22), at least one magnet (24) and at least one winding (26). The optical module is rotatablly fixed on the seat. The magnet is fixed on the optical module. The magnet and the winding are positioned at one side of the optical module. A variable current is applied to the winding, and a magnetic field is formed at ends of the winding. The magnetic forces between the magnetic field and the magnet drives the optical module to rotate.

Abstract: A liquid crystal display device (20) includes a backlight module (22), a liquid crystal module (24) and a lens module (25). The backlight module is used to emit light. The liquid crystal module is mounted on the backlight module. The lens module is set in front of the liquid crystal module. The light emitted from the backlight module passes the liquid crystal module and is focused by the lens module, thus the light being color mixed before reaching viewer's eyes.

Abstract: A two-step auto focus lens system for a digital camera so that the digital camera can switch between a near focal point and a far focal point. The two-step auto focus lens system includes a coil base, a sensor, and a lens barrel. The coil base has two ends and a coil around the coil base. The sensor is disposed corresponding to one end of the coil base to drives the coil base to switch polarities of the two ends of the coil base. The lens barrel is movably installed inside the coil base and has a magnetic component corresponding to the other end of the coil base. When the coil base is driven by the sensor to switch polarities of ends of coil base, lens barrel moves relative to the coil base to the near and far focal points.

Abstract: A connector (20) is coupled with a circuit board (10) of a portable electronic device, and the circuit board includes a board hole (12) therein and a plurality of conductive pads (14) thereon, adjacent the board hole. The connector includes a housing (22) and a plurality of conducting terminals (24). The housing has an open end and includes a top wall (222) and sidewall (224), with the top wall and the sidewall together co-operatively defining a cavity (220). The plurality of conducting terminals is positioned near/proximate the open end of the housing. The housing is fixed with circuit board corresponding with the board hole and is electronically connected with the conductive pads via the conducting terminals.

Abstract: An auto focus lens for digital cameras comprises a coil base, a lens barrel, and an elastic component. The coil base which has a coil wounded around in a specific direction and which has an accommodation hole whose bottom is provided with a stopper. The surface of the lens barrel is distributed with a permanent magnet and the lens barrel is rotatably installed inside the accommodation hole. One of the lens barrel's ends has a guide surface, slant and close to the stopper. The elastic component presses against the other end of the lens barrel so that the guide surface touches the stopper permanently. When the coil is provided with an electric current, a magnetic force is generated to repel the permanent magnet on the lens barrel. The lens barrel thus rotates up and down according to the design of the guide surface, and thereby the focal length of the camera is changed.

Abstract: A connector (20) is coupled with a circuit board (10) of a portable electronic device, and the circuit board includes a board hole (12) therein and a plurality of conductive pads (14) thereon, adjacent the board hole. The connector includes a housing (22) and a plurality of conducting terminals (24). The housing has an open end and includes a top wall (222) and sidewall (224), with the top wall and the sidewall together co-operatively defining a cavity (220). The plurality of conducting terminals is positioned near/proximate the open end of the housing. The housing is fixed with circuit board corresponding with the board hole and is electronically connected with the conductive pads via the conducting terminals.

Abstract: A method for calibration of a digital image-captured device is proposed. During assembly process of the digital image-captured device, the present invention first constructs a position table according to a mechanical drawing. Then, when the digital image-captured device is placed on a disposition base, the present invention measures the position value of the digital image-captured device. After that, the present invention maps the position value on a position table of the digital image-captured device to calculate an offset of the digital image-captured device via an interpolation algorithm. Finally, the present invention uses a driving unit to move the digital image-captured device to the predetermined position according to the offset.

Abstract: An auto focus lens for digital cameras comprises a coil base, a lens base, and an elastic component. The coil base which has a coil wounded around in a specific direction and which has an accommodation hole whose bottom is provided with a stopper. The surface of the lens base is distributed with a permanent magnet to be rotateably installed inside the accommodation hole. One of the lens base's ends has a guide surface, slant and close to the stopper. The elastic component presses against the other end of the lens base so that the guide surface touches the stopper permanently. When the coil is provided with an electric current, a magnetic force is generated to repel the permanent magnet on the lens base. The lens base thus rotates up and down according to the design of the guide surface, and thereby the focal length of the camera is changed.

Abstract: A two-step focus lens for a digital camera so that the digital camera can switch between a close focal point and a distant focal point. The two-step focus lens includes a coil base, a sensor, and a lens base. The coil base has a coil which is wounded in a specific direction. The sensor drives the coil base to switch its two polarities according to the winding direction of the coil on the coil base. The lens base is movably installed inside the coil base and corresponds to the sensor. The end farther from the sensor has a magnetic component so that the lens base moves relative to the coil base to the close and distant focal points as the coil base switches its polarities.