38 results about "Lens space" patented technology

Optical systems such as image display systems include a freeform optical waveguide prism and a freeform compensation lens spaced therefrom by a gap of air or index cement. The compensation lens corrects for aberrations which the optical waveguide prism will introduce in light or images from an ambient real-world environment. The optical waveguide prism receives actively projected images at an entry location, and emits the projected images at an exit location after internally reflecting the images along an optical path therein. The image display system may include an image source and coupling optics. The approach permits design of an optical viewing device, for example in optical see-through HMDs, achieving an eyeglass-form appearance and a wide see-through field of view (FOV).

An image sensor module includes a holder and a lens unit attached in the holder. The lens unit is held in the holder by at least one engagement projection formed by plastically deforming a part of the holder. Preferably, the lens unit includes a first lens spaced from the engagement projection and a second lens adjoining the engagement projection. Each of the first lens and the second lens includes a central lens portion, and a flat peripheral portion surrounding the lens portion. The flat peripheral portion of the first lens is held in contact with the flat peripheral portion of the second lens. The engagement projection engages the flat peripheral portion of the second lens.

The optical connector includes a holder unit, a first optical fiber fixedly supported by the holder unit and having an inclined end face, a first collimating lens spaced from the inclined end face, a mounting unit supported relative to the holder unit, a second optical fiber disposed opposite the first collimating lens and having an inclined end face, a second collimating lens disposed between the first collimating lens and the second optical fiber and spaced from the inclined end face of the second optical fiber, wherein an optical transmission system comprising the first optical fiber and the first collimating lens is symmetric to an optical transmission system comprising the second optical fiber and the second collimating lens with respect to a plane perpendicular to the optical axis.

The present invention discloses a large-field unit-magnification projection optical system. The optical system includes an optical axis, a spherical concave reflection mirror; a lens group with positive refracting power arranged adjacent the mirror with an air space therebetween. The lens group includes a first plano-convex lens, a negative meniscus lens adjacent the plano-convex lens, a positive lens adjacent the negative meniscus lens, a negative double-convex lens spaced apart far from the positive lens, and a second plano-convex lens. The optical system further includes a pair of prisms each having respective first and second surface. The second surfaces are arranged adjacent the flat surface of the plano-convex lens element on opposite sides of the optical axis and the first surfaces are arranged adjacent object planes and image planes, respectively. Each lens in the lens group and the pair of prisms provide chromatic aberration correction in a spectral region that contains at least g, h and i-line wavelengths. In this projection optical system, the object plane is parallel to the image plane.

A display apparatus has an image generator that generates image-bearing light from a f surface and a lens spaced apart from the image generator and having an aspheric incident refractive surface concave to the image generator and having an aspheric reflective surface concave to the image generator, wherein a principal axis of the reflective surface is normal to the image generator. A beam splitter plate disposed in free space between the image generator and the lens has first and second parallel surfaces that are oblique to a line of sight of a viewer. The lens and the beam splitter plate define a viewer eye box for the image-bearing light along the line of sight of the viewer.

Two laser media are arranged at equal intervals between a first plane mirror as a resonator mirror including a resonator and a second plane mirror for splitting laser light, the second plane mirror transmits the second harmonic laser light and reflects the fundamental frequency to the laser incident surface Laser light; a dielectric multilayer film is formed on the second plane mirror for splitting the laser light. The third plane mirror as a resonator mirror is arranged to face a direction at 90° to the incident direction of the fundamental-frequency laser light in the second plane mirror. The first lens, the nonlinear optical crystal for converting the fundamental frequency laser into the second harmonic laser, and the second lens are sequentially arranged in a single row at intervals equal to the focal lengths f of the first and second lenses between the second and second lenses. between the third plane mirrors. Thus, a space for accommodating a nonlinear optical crystal and a mirror for separating second harmonic laser light can be secured while maintaining a stable resonance condition, and the output of a solid-state laser generator can be increased.

In a stereoscopic display system, comprising a display and a lens array, it is difficult to manufacture the lens array with lens spacing at high accuracy as designed, and it is also difficult to attain high installation accuracy when the display and the lens array are combined together.An image of a stereoscopic display 27 with a display 1 and a lens array 2 integrated with each other is taken by a camera 3, and a positional relation of each pixel of the display 1 and each lens center of the lens array 2 is determined by a measuring system 4. Based on the matching positional relation information of the lenses and the pixels thus acquired, a stereoscopic image generating / outputting system 12 generates a stereoscopic image and supplies the image to the stereoscopic display 27.

Disclosed herein are an obstacle sensing module and a cleaning robot including the same. The cleaning robot includes a body, a driver to drive the body, an obstacle sensing module to sense an obstacle present around the body, and a control unit to control the driver, based on sensed results of the obstacle sensing module. The obstacle sensing module includes at least one light emitter including a light source, and a wide-angle lens to refract or reflect light from the light source so as to diffuse the incident light in the form of planar light, and a light receiver including a reflection mirror to again reflect reflection light reflected by the obstacle so as to generate reflection light, an optical lens spaced from the reflection mirror by a predetermined distance, to allow the reflection light to pass through the optical lens, and an image sensor, and an image processing circuit.

The invention provides a knife rest and light source structure of a slit lamp. The structure comprises a light-pervious cylinder structure and a light source base structure connected with the lower end of the light-pervious cylinder structure. The light-pervious cylinder structure comprises a triangular prism, a light-pervious cylinder lens cone, a first lens, an upper lens space ring and a second lens. The first lens, the lens space ring and the second lens are sequentially arranged in the light-pervious cylinder lens cone from top to bottom. The triangular prism is arranged on the top of the lens cone. The light source base comprises an upper blue-ray disc, a lower blue-ray disc, an opening and closing knife rest, a third lens, a lower lens space ring, a fourth lens, a light source lens cone, a bulb and a lamp holder. The upper blue-ray disc is located on the lower blue-ray disc. The light source lens cone is sleeved with the opening and closing knife rest. The third lens, the lower lens space ring and the fourth lens are sequentially arranged in the light source lens cone from top to bottom. The bulb is arranged on the upper surface of the lamp holder. The lamp holder is arranged at the bottom end of the light source lens cone. The knife rest and light source structure of the slit lamp is compact in structure and convenient to use and can effectively reduce the size of the slit lamp.

The invention discloses a method for enabling the graph and text to have stereo vision effects, the method comprises: firstly printing stereo graph and text through synthesized processing on the papersheet; pre-making cylinder lens space and shape matched with the stereo graph and text in a hot stamping head of the hot stamping apparatus; pasting the thin film on the graph and text surfaces; after hot pressing, forming the grating, thereby generating the stereo vision effect. After the completed printed articles are cut into required shapes on the module cutting machine, the printed articlescan be used as packaging materials. The vision effect is obvious and is convenient for showing the product characteristic and the enterprise sign. The invention can be applied to the surface of the existing majorities of paper printed articles, however folding, cutting or assembling, the vision representation of the stereo graph and text can not be influenced. Relative to the grating board product, the invention has characteristics of convenience, environmental protection and easy bulk production, and has good market application prospect.