摘要:
An image display apparatus having a three-dimensionally decentered optical path to attain a reduction in overall size of the apparatus and to place constituent members effectively in a dead space, thereby permitting the apparatus to be designed in a variety of ways. The apparatus includes an image display device and a viewing optical system for leading an image formed by the image display device to a pupil. The viewing optical system has at least a first reflecting surface and a second reflecting surface positioned closer to the pupil than the first reflecting surface along the optical path. A first plane defined by the optical axis incident on the first reflecting surface and the optical axis reflected therefrom and a second plane defined by the optical axis incident on the second reflecting surface and the optical axis reflected therefrom intersect each other at an arbitrary angle, thereby forming a three-dimensionally decentered optical path. At least either one of the first and second reflecting surfaces has a curved surface configuration.
摘要:
An image display apparatus allows an image from a single image display device to be led to two eyes without using a half-mirror, thereby allowing observation of a bright image, and facilitates correction of various aberrations. A viewing optical system includes a left ocular part, a right ocular part, and an optical path distributing part for leading a light beam from a single image display device to the left and right ocular parts. The left and right ocular parts each have at least two reflecting surfaces. The optical path distributing part has at least one pair of reflecting surfaces for left and right optical paths. These reflecting surfaces are formed from rotationally asymmetric curved reflecting surfaces having the function of correcting decentration aberrations. The left and right optical paths of the viewing optical system are formed by optical surfaces arranged so that the left and right optical paths are not in plane symmetry with each other but in 180-degree rotational symmetry with respect to only a normal line passing through the center of the image display device.
摘要:
A liquid crystal display unit has a transmissive liquid crystal plate having a number of pixels arranged on a two-dimensional basis, on which an image is formed, and a light source unit emitting beams of light of a plurality of luminescent colors for irradiating said liquid crystal plate from back. An interface circuit receives an image signal representative of a color image to sequentially form on said liquid crystal plate a plurality of separation images in which the color image is separated in association with the plurality of luminescent colors of said light source unit. The interface circuit causes said light source unit to flash with a luminescent color associated with a separation image formed on said liquid crystal plate in synchronism with a sequential formation of the separation images onto said liquid crystal plate. Beams of light emanated from the light source unit and transmitted through the liquid crystal plate reproduce an image.
摘要:
A head-mounted display includes an image display system which is common for two separate light channels. The head-mounted display further includes an optical system for projecting an image in a left and a right exit pupil of the head-mounted display. Each light channel is provided with imaging optics. The imaging optics of such a light channel have a hollow mirror and a semitransparent mirror or a hollow mirror, a semitransparent mirror and a folding mirror.
摘要:
Low-cost plastic optics allow biocular viewing of video images with a single electro-optic display device. Folded and unfolded dual off-axis configurations use collimated illumination and intermediate imaging optics to fill both eyepieces from a single display device without requiring beamsplitters. Multiple illumination schemes provide either monochrome or color, either two-dimensional or time-sequential true stereographic presentation. Light from multicolor sources is superimposed using dichroic mirrors. A display field lens proximate to the display surface collimates the illumination beam. A shaping lens provides substantially uniform illumination of the display surface. An aperture stop improves image quality by blending sub-pixel higher order spatial harmonics from the display device. Offsetting color over- and under-correction of individual optical elements provides overall chromatic correction with minimal optical complexity. Lightweight optical elements and injection-molded unitary plastic structures containing multiple optical elements reduce cost and complexity. A wireless video interface eliminates excess cabling.
摘要:
A head-mounted image display apparatus includes optical visual units mounted on a laterally disposed shaft and adjustable so as to be movable toward and away from each other for establishing a correct eye spacing for a user. LCD display panels are mounted within the optical visual units so as to be vertically movable while ocular lenses onto which images displayed by the LCDs are projected via an obliquely arranged mirror are positionally fixed relative the eyes of the user such that focus adjustment will not cause image dropout and so that focus and eye spacing may be established independently of each other. Sliders provided for effecting focus and eye spacing adjustment are mounted such that frictional force is applied thereto for providing smooth but sure movement of the sliders so that a set position of the sliders may be reliably maintained. The sliders may be mounted via self a lubricating mounting to improve adjustment smoothness and slide characteristics.
摘要:
A real space video signal processing unit generates right and left eye first video signals including corresponding images at different horizontal positions by processing a real space video signal from a single image sensing unit. An image signal generation unit generates right and left eye second image signals including corresponding images at different horizontal positions. A right eye video signal synthesis unit generates a right eye display signal by synthesizing the right eye second image signal with a partial region of the right eye first video signal. A left eye video signal synthesis unit generates a left eye display signal by synthesizing the left eye second image signal with a partial region of the left eye first video signal. These right and left eye display signals are displayed on a video display unit, so that the image sensed by the image sensing unit is fused at finite distance.
摘要:
A head-mounted display system including a high resolution active matrix display which reduces center of gravity offset in a compact design. The active matrix display can be either a liquid crystal display or a light emitting display.
摘要:
A head-mounted display apparatus includes an image display device for displaying images, a first flat reflection mirror for reflecting light from the image display device, a first and a second lenses for controlling a size of the image from the first flat reflection mirror, a first beam splitter for partially transmitting and partially reflecting the light passing through the first and the second lenses, thereby splitting two light beams, a second flat reflection mirror for reflecting the transmitted light beam, a second beam splitter for partially transmitting and partially reflecting the light beam from the second flat reflection mirror, a first reflection mirror for reflecting the light beam reflected by the second beam splitter to one eye of a viewer, a third flat reflection mirror for reflecting the light beam reflected by the first beam splitter, a fourth flat reflection mirror for reflecting the light beam from the third flat reflection mirror, a third beam splitter for partially transmitting and partially reflecting the light beam from the fourth flat reflection mirror and a second reflection mirror for reflecting the light beam reflected by the third beam splitter to the other eye of the viewer.
摘要:
Combination head-protective helmet which includes a cap and an outwardly extending brim and thermal imaging apparatus which includes an infrared camera for producing an infrared image of a scene or object and a display system which generates a visible image of the scene or object from the infrared image, the camera is mounted underneath the brim of the protective helmet for protection against e.g. falling objects and the display system is mounted on the helmet in a position to permit a person wearing the combination to see the visible image.