227 results about "Exit plane" patented technology

A light guide plate includes a light exit plane and a light entrance end, is formed into a shape having a thickness in a direction orthogonal to the light exit plane, the thickness being gradually larger as being farther-from the light entrance end, and contains scattering particles dispersed therein, and a light guide plate assembly includes the light guide plate and a prism sheet which includes a plurality of prisms arrayed in parallel with each other, and is arranged so that vertex angles of the prisms face the light exit plane. The scattering particles scatter light entering from the light entrance end and propagating in the light guide plate, which satisfy Expressions (1) and (2) below, and vertex angles of the prisms of the prism satisfy Expression (3) and (4) below.1.1≦ΦNPLGKC≦8.2   (1)0.005≦KC≦0.1   (2)55°≦θ≦80°  (3)0°≦θ1≦15° and 30°≦θ2≦45°  (4)

Exemplary embodiments of the present invention relate to an aspherical light emitting diode (LED) lens and a light emitting device including the same. The aspherical LED lens includes a light exit plane concavely depressed near a central axis, a light entrance plane including a conical plane having a vertex located on the central axis, and a plurality of protrusions arranged on a portion of a side surface of the light exit plane. The aspherical LED lens has a radially symmetrical structure with respect to the central axis.

A linear light source device for image reading. The main body of the linear light source device includes at least a light-guide bar and a light source assembly. The light-guide bar is a polygonal column with one surface having stripes thereon, acting as a reflective plane with a reflective function. The opposite plane to the reflective plane is a light-exiting plane, and all the remaining planes are reflective layers. At least one of the ends of the polygonal column is an incident plane for a light beam to enter. Light is transmitted through both of the two ends of the polygonal column (or one end with the other end acting as a reflective plane) and uniformly transmits through the light-exiting plane. The light-guided bar has a simple structure and configuration, a compact volume, a high rate of utilization in light energy, is flexibly changed in length, and is easy to manufacture with high product yield and low manufacturing cost. In addition, it can provide uniform monochromatic and colored light, with high luminance, and at a low cost.

An LED lampshade has a body and multiple light concentrators. The body has a light exit plane. The light concentrators are formed on the body. Each light concentrator has a light incident recess, a light transmitting recess and an third concentration wall. The light incident recess has a first concentration wall and a first chamber defined by the first concentration wall. The light transmitting recess corresponds to the light incident recess, and has a second concentration wall, a second chamber defined by the second concentration wall and opposite to the first chamber, and an opening formed through the light exit plane. The third concentration wall is formed around a periphery of the light concentrator. Given the opposite light incident recess and light transmitting recess and the three concentration walls, the LED lampshade enhances light transmittance and concentration therethrough.

A unitary light guide plate includes a light exit plane, a thick portion located substantially on a center portion of the light exit plane, thin end portions formed on both sides of the thick portion, a half portion of a parallel groove formed on a backside of the light exit plane to accommodate linearly arranged light sources, inclined back portions arranged so as to become thinner from the thick portion to the thin end portions, and scattering means for scattering light entering from the light sources accommodated in the parallel groove into the thin end portions and propagated through the inclined back portions toward the thick portion. A light guide plate unit has two or more of the unitary light guide plates coupled together in such a way that respective light exit planes are arranged to form a same plane.

Provided is a thin, lightweight planar lighting device capable of emitting uniform illumination light free from brightness unevenness and enabling increase in dimensions. The device includes a light source and a light guide plate disposed opposite to the light source, and the light guide plate includes a light entrance plane opposite to the light source and a light exit plane containing one side of the light entrance plane, and has a shape growing thicker in direction perpendicular to the light exit plane with the increasing distance from the light entrance plane and contains scattering particles for scattering light entering through the light entrance plane and propagating the inside thereof.

The planar lighting device includes a light guide plate including two symmetrical, inclined planes increasingly distanced from the light exit plane with the increasing distance from the light entrance planes toward the center, a curved portion joining the inclined planes, and scattering particles dispersed therein; light sources; a housing; a securing unit securing the light sources and light guide plate to keep their distance constant, and a sliding mechanism allowing the securing unit to slide. Distance between the light entrance planes, thicknesses at the light entrance planes and at the central curved portion, its radius of curvature and taper of the inclined planes are all held within respective given ranges as well as scattering particle diameter and density, light use efficiency and middle-high ratio of the brightness distribution. A thin planar lighting device yielding high light use efficiency with a minimized brightness unevenness and a high-in-the-middle brightness distribution.

The present invention relates to a lamp for a vehicle, wherein light is caused to be incident into a light guide panel from a side surface of the plate-shaped light guide panel, the light is propagated within the light guide panel by means of total reflection and scattered by a scattering pattern formed on a rear surface of the light guide panel so that the light can be radiated to a front surface of the light guide panel, and the light radiated to the front surface is then radiated forward with a predetermined pattern by means of a cover member provided with a lens pattern. A lamp for a vehicle according to the present invention comprises a housing having an opening through which light radiates; a light-transmitting cover member which has a light incidence plane and a light exit plane, and is fixedly installed on the housing to hermetically cover the opening of the housing and provided with a lens pattern formed on the light incidence plane and / or the light exit plane; a plate-shaped light guide panel which has a light incidence plane defined at a side surface thereof to receive light and a light exit plane defined at a front surface thereof to face the cover member and is provided with a scattering pattern for scattering light incident on the light incidence plane thereof toward the light exit plane thereof; a light source installed at a portion adjacent to the light incidence plane of the light guide panel to emit the light to the light incidence plane; and a reflection plate installed on a rear surface of the light guide panel to reflect the light toward a front surface of the light guide panel.

An all permanent magnet Electron Cyclotron Resonance, large diameter (e.g., 40 cm) plasma source suitable for ion / plasma processing or electric propulsion, is capable of producing uniform ion current densities at its exit plane at very low power (e.g., below 200 W), and is electrodeless to avoid sputtering or contamination issues. Microwave input power is efficiently coupled with an ionizing gas without using a dielectric microwave window and without developing a throat plasma by providing a ferromagnetic cylindrical chamber wall with a conical end narrowing to an axial entrance hole for microwaves supplied on-axis from an open-ended waveguide. Permanent magnet rings are attached inside the wall with alternating polarities against the wall. An entrance magnet ring surrounding the entrance hole has a ferromagnetic pole piece that extends into the chamber from the entrance hole to a continuing second face that extends radially across an inner pole of the entrance magnet ring.

Provided is a planar lighting device having a thin shape and capable of emitting uniform illumination light with less brightness unevenness. The planar lighting device includes a first and a second light sources arranged at a given distance apart from each other and a light guide plate arranged between the first and second light sources. The light guide plate includes a light exit plane, a first light entrance plane facing the first light source and containing one side of the light exit plane, and a second light entrance plane facing the second light source and containing the opposite side to the one side, and has a shape growing thicker from the first and second light entrance planes toward the center. The light guide plate contains scattering particles for scattering light entering through the first and second light entrance planes and propagating inside by a ratio satisfying 1.1≦Φ·Np·LG·KC≦8.2.

A light guide of the present invention is excellent in luminance uniformity and can have a reduction in the number of components and a reduction in production cost. The light guide of the present invention includes a main body of a light guide plate having a light incident plane and a light exit plane, and a distance maintaining section (10) for maintaining a distance between the light exit plane and an optical member for receiving light emitted from the light exit plane, the distance maintaining section (10) being provided on the light exit plane, the optical member being placed to face the light exit plane, and the distance maintaining section (10) (i) extends from the light exit plane to the optical member, (ii) has a length of not less than 0.3 mm but not more than 50 mm in a direction in which the light exit plane and the optical member are connected to each other via the distance maintaining section (10), and (iii) is provided integral with the main body of the light guide plate.

The invention relates to a three-CCD temperature field measuring device, comprising an optical lens, a beam splitting prism group, three CCD area array sensors and a data acquisition and analysis unit; wherein the optical lens is used for optically imaging and focusing radiations of objects to be measured on an incident plane of the beam splitting prism group; the beam splitting prism group equally divides the projected radiations into three waveband radiations in distinct directions, and the three waveband radiations exit from three exit planes respectively; the three CCD area array sensors are arranged at the three exit planes of the beam splitting prism group respectively, thus imaging the three exit radiations that pass through light filters of different spectrum transmittance distribution and obtaining three spectrum-irrelative CCD images; and the data acquisition analysis unit acquires the data of the three CCD images and utilizes a multispectral temperature measurement method for the temperature field calculation. The invention also relates to a corresponding temperature field measurement method. The inventive technical proposal can achieve the temperature field measurement and can be widely applied; in addition, the technical proposal is simple and feasible, and easy for popularization and application in the field of industrial production, such as high-temperature detection, etc.

A light shielding plate of an outdoor LED lighting device, comprising a main body disposed on a light exit plane of said outdoor LED lighting device. On a bottom surface of said main body is provided with at least a protrusion block, to reflect lights coming from LEDs or said LEDs plus a secondary lens set of said outdoor LED lighting device, in achieving light shielding effect. Moreover, on a reflection plane of said protrusion block is further provided with curved planes of various designs, to fully utilize the shielded light, so that lights are redistributed in areas of effective illumination, in further realizing power saving requirements.

The light guide plate includes a light exit plane, two light entrance planes, two symmetrical inclined rear planes increasingly distanced from the light exit plane from the two light entrance planes toward a center of the light exit plane, a curved portion joining the two inclined rear planes and scattering particles for scattering light travelling inside the light guide plate. The light guide plate satisfies given ranges set for a length between the two light entrance planes, a thickness of each of the two light entrance planes, a thickness at the center of the curved portion, a radius of curvature thereof, tapers of the inclined rear planes, and a particle diameter and a density of the scattering particles, and conditions that a light use efficiency be 55% or greater and that a middle-high ratio represented by the brightness distribution at the light exit plane be greater than 0% and not greater than 25%.

A respiratory circuit inhalation apparatus is adapted to communicate a fluid stream between at least one air source and a patient and is formed with at least one central body portion defining an interior fluid stream communication passageway. An integrally formed dual function mouthpiece and effluent port projects from an end of the central body to communicate the fluid stream between the air source and a portion of the respiratory circuit that can lead to the patient or other components of the respiratory circuit. An integrally formed ambient fluid port is also formed as part of the inhalation apparatus that projects from the central body portion opposite to the dual function port. As with the other ports, the ambient fluid port also communicates the fluid stream between the interior fluid passageway and the at least one air source. The preferred inhalation apparatus also further includes a medication port that is formed about the central body portion and which includes a baffle or baffle portion that projects into and terminates within the interior fluid passageway. The terminus orifice and exit plane of the baffle preferably projects and terminates within the interior fluid passageway beyond the surface thereof so that liquids pooled within the passageway can be retained therein without draining into the medication port. Any or all of the various ports can be configured to be compatible for use with industry preferred respiratory circuit components and rigid and deformable 22 millimeter tubes.

Disclosed is a dark field illumination apparatus which is capable of performing a dark field illumination which exhibits a sufficient brightness and a sufficiently suppressed unevenness in brightness. The apparatus comprises a shaping system for shaping a light beam from a light source into approximately parallel beam having a ring- shaped section; a fly-eye optical device for forming a plurality of light source images in the vicinity of its exit plane based on the approximately parallel beam, the light source images being arranged circularly; and a light collection optical system for collecting light beams from the light source images and superposing them on an object plane.

The light guide plate includes a rectangular light exit plane, a light entrance plane containing one side of the light exit plane, and a rear plane located on the side opposite from the light exit plane and scattering particles for scattering light propagating inside the light guide plate dispersed therein. The light guide plate has two layers, a first layer located on the side closer to the light exit plane and having a first particle density of the scattering particles, and a second layer located on the side opposite from the light exit plane and having a second particle density that is greater than the first particle density of the first layer. Npo and Npr satisfy Npo<Npr, where Npo is the first particle density and Npr is the second particle density.

A lighting module able to give a light beam with cut-off line for a motor vehicle headlight, comprising a light source, a reflector, a dioptre serving as an exit lens or an exit lens, and a reflective folder. The light source is combined with a collimator in order to give a beam that can be assimilated to a parallel beam, substantially orthogonal to an exit plane of the collimator. The reflector and the dioptre or lens may be combined in a single piece made from transparent material, and the surface of the reflector and that of the folder means work in total reflection according to an air / transparent material interface.

The liquid crystal display device with a simple configuration is capable of emitting light with a desired color temperature, achieving high light use efficiency, and displaying high quality images. The liquid crystal display device includes a planar lighting device and a liquid crystal display panel. The planar lighting device includes a light source having LED chips for emitting blue light, a transparent light guide plate having a light entrance plane admitting light emitted by the light source and a light exit plane emitting planar light, and a fluorescent member disposed between the light emission plane and the light entrance plane and having one or more fluorescent substance coated areas for emitting white light by converting blue light from the light source into white light and one or more blue light passing areas passing blue light as blue light. The liquid crystal display panel essentially includes red, green and blue filters.

The present invention relates to a lamp for a vehicle, wherein light is caused to be incident into a light guide panel from a side surface of the plate-shaped light guide panel, the light is propagated within the light guide panel by means of total reflection and scattered by a scattering pattern formed on a rear surface of the light guide panel so that the light can be radiated to a front surface of the light guide panel, and the light radiated to the front surface is then radiated forward with a predetermined pattern by means of a cover member provided with a lens pattern. A lamp for a vehicle according to the present invention comprises a housing having an opening through which light radiates; a light-transmitting cover member which has a light incidence plane and a light exit plane, and is fixedly installed on the housing to hermetically cover the opening of the housing and provided with a lens pattern formed on the light incidence plane and / or the light exit plane; a plate-shaped light guide panel which has a light incidence plane defined at a side surface thereof to receive light and a light exit plane defined at a front surface thereof to face the cover member and is provided with a scattering pattern for scattering light incident on the light incidence plane thereof toward the light exit plane thereof; a light source installed at a portion adjacent to the light incidence plane of the light guide panel to emit the light to the light incidence plane; and a reflection plate installed on a rear surface of the light guide panel to reflect the light toward a front surface of the light guide panel.

A liquid crystal display, comprising: a liquid crystal display panel and a backlight module. The backlight module comprising: a reflection unit, a light emitting unit, and a compound diffusion plate structure. The light emitting unit has a plurality of light emitting components installed within the installation space of the reflection unit. The compound diffusion plate structure is placed on one side of the light emitting unit, comprising: a body unit and a printing micro diffusion unit. The body unit has a main layer, and a plurality of micro diffusion particles formed inside the body unit, allowing light to diffuse within the body unit. The printing micro diffusion unit has a plurality of convex lens units formed on a light entrance plane or a light exit plane of the body unit by means of printing.

Lift produced by an airfoil of an aircraft is increased by suppressing fluid detachment from the surface of the airfoil. An engine cowling extends outwardly from the surface of the airfoil that has an exit plane configured for directing exhaust gases toward a rear of the aircraft. Fences extending outwardly from the surface and proximate to the exit plane of the engine cowling are configured to guide the exhaust gases along at least a portion of the airfoil surface, thereby restricting spanwise movement of the gases and increasing the Coanda Effect exhibited by the gases, thereby increasing the amount of lift produced along the surface of the airfoil. Such techniques may be used in short take-off and landing (STOL) aircraft.

A novel optical irradiation apparatus includes a light source and a light guide. The light source is configured to radially irradiate a light beam. The light guide is configured to include a transparent material configured to lead the light beam irradiated from the light source in a specific direction and to emit the light beam. The light guide also includes an incidence plane, an exit plane, and plural connecting planes. The incidence plane is configured to receive the light beam. The exit plane is configured to emit the light beam to so as to irradiate an object. The plural connecting planes are configured to connect the incidence plane to the exit plane. A part of at least one of the plural connecting planes is inclined with respect to an axis of the light beam.