89results about How to "Good dodging effect" patented technology

The invention relates to an optical conversion luminous film and a preparation method thereof. The optical conversion luminous film is formed by a diffusion film and a mixed paint layer on the diffusion film; the optical conversion luminous film has the thickness of 30-200mum, wherein, the thickness of the diffusion film is 20-70mum; the mixed paint layer is made of 10.000-30.000% of yellow luminous fluorescent material, 0.001-2.000% of red luminous fluorescent material, 60.000-89.000% of polymer resin, 1.000-5.000% of bi-amino silane, 0.000-20.000% of diluting agent and 0.000-5.000% of accessory ingredient. By combining the yellow luminous fluorescent material and the red luminous fluorescent material, the invention can realize the aim of regulating chromaticity coordinate, color temperature and color rendering index, thus preparing the optical conversion luminous film which is made of the fluorescent materials and has the advantages of high color rendering index of the photodiffusion effect, good property of uniform light, anti-dazzle, high light conversion efficiency, low cost, excellent aging characteristic and simple production technique.

The invention relates to a photoetching lamp optical system, which comprises a light source, an integral rod, a relay lens and a mask, and is characterized by also comprising a uniformity strengthening component. According to the photoetching lamp optical system, the uniformity strengthening component is added in an incident end of the integral rod, so that the illumination uniformity can be greatly improved under the condition that the integral rod is shorter. Simultaneously, the cost can be reduced, the size of a machine is decreased, and the difficulty in assembly is reduced.

The present invention provides a uniform light element for a DMD digital photolithography system and a design method thereof, belonging to the field of digital photolithography technology. The methodcomprises more than one sub lens, each sub lens is one square with a length-width ratio of 1:2, the front surface of each sub lens is a plane, and the rear surface of each sub lens is a free curved surface. The uniform light element for the DMD digital photolithography system and the design method thereof are high in utilization rate of luminous energy, good in uniform light effect, small in sizeand convenient to integrate, can perform individual design of each sub lens, employ a mode of random arrangement of area sizes and positions, break periodicity of a traditional microlens array and greatly improve the uniform light effect of a coherent source.

The invention provides an optical film, a backlight module comprising the same and a display device. The optical film comprises a polarizing film and a diffusing film, wherein the polarizing film is used for converting incident light into polarized light and then emitting the polarized light; the diffusing film is arranged on the emergent surface of the polarizing film, and comprises scattering particles capable of forming Rayleigh scattering. The backlight module comprises an optical film and a light source; the light source is arranged on one side, away from the diffusing film, of the polarizing film. According to the optical film provided by the invention, the problems that the conventional diffusing film cannot be thinned, has a poor light uniformizing effect and causes brightness lossare solved; the polarizing film can convert the incident light into the polarized light and then emit the polarized light, so that the light coming into the diffusing film is the polarized light; thescattering particles in the diffusing film can diffuse the polarized light emitted from the polarizing film, so that the light uniformizing effect is enhanced and the brightness after diffusion is enhanced; the optical film is small in thickness; the backlight module facilitates reduction in the light mixing distance; the light uniformizing effect is enhanced; the overall brightness of the moduleis improved; thinning of a product is facilitated.

The invention discloses a multi-focus dodging lens comprising a transmission unit and a total-reflection unit capable of peripherally enclosing the transmission unit. The transmission unit comprises a first collimation incident surface and a second collimation incident surface, which are provided with circular calibers, and are arranged sequentially along the central light beam transmission direction. The first collimation incident surface comprises more than two different curved surfaces, and the curved surface distribution structure of the second collimation incident surface is the same as that of the first collimation incident surface. The total -reflection unit comprises an incident side surface, a total-reflection side surface, and an outgoing side surface. The incident side surface is used for connecting the first collimation incident surface and the total-reflection side surface, and the outgoing side surface is used for connecting the total-reflection side surface with the second collimation transmission surface. The total-reflection side surface comprises more than two different curved surfaces, and the curved surface distribution structure of the outgoing side surface is the same as that of the total-reflection side surface. The invention also discloses an optical system. The multi-focus dodging lens is advantageous in that the blue edge or yellow edge phenomenon caused by the color separation can be prevented, and the dodging effect is good.

The invention discloses a laser light source device and a projection system. The laser light source device comprises a laser and a light combining assembly, wherein the laser comprises a first laser chip, a second laser chip and a third laser chip which emit laser with different wavelengths, the laser chips with the same color are arranged into a laser chip group, and the laser chips are arranged into a matrix; and the light combining assembly is positioned on the light emitting side of the laser and is used for enabling the laser beams with different colors emitted by each laser chip group to be converted and beam to the same position through a light path and then to be emitted in a set direction. The light combining assembly comprises a reflector and a light combining mirror, the laser beams are subjected to light path turning through the reflector, the laser beams with different colors are combined through the light combining mirror, and finally the laser beams emitted by the laser chip groups are combined to the same position, so that the positions of laser spots with different colors are overlapped, the spot size is reduced, and the lasers with different colors are mixed more sufficiently.

The invention relates to an aircraft monopulse avoidance strategy determination method and system. The method comprises the following steps: determining the speed of an aircraft after pulse application; determining the operation angular momentum of the aircraft after the pulse is applied; determining the position of the aircraft after the pulse is applied; determining the eccentricity rate of the aircraft after the pulse is applied; determining a true anomaly of the aircraft after the pulse is applied; calculating an included angle between the initial position of the aircraft and an avoiding position on the avoiding track; determining a semi-major axis of an aircraft orbit after the pulse is applied; determining the spatial distance between the avoiding position of the aircraft on the avoiding orbit and the center of mass of the earth; determining the spatial distance from the position, attacked by an interceptor, of the aircraft to the center of mass of the earth when the pulse is not applied; and carrying out subtraction on the two distances to obtain a distance difference, and determining an optimal avoiding strategy. According to the method, the target aircraft can maneuver according to the preset design parameters when being attacked, and the target aircraft is away from the threat area.

The invention relates to an optical lens, in particular to a microlens array. The invention discloses a microlens array which at least comprises two microlens units in contact arrangement. Each microlens unit consists of a front working end face, a back working end face and side faces. The front working end face forms a first-level microlens array; the back working end face forms a second-level microlens array; and all or part of the side faces of each microlens unit are coated by a light-absorbent dielectric layer. As the side faces of each microlens unit are coated with the light-absorbent dielectric layer capable of absorbing the misplaced off-axis stray light in an illuminated zone, the illumination evenness can be greatly improved. In addition, the structure coated with the light-absorbent dielectric layer can also reduce the diffraction effect of the microlens array, and consequently further improve the dodging effect. The light-absorbent dielectric layer also has a heat conducting action, and can evenly conduct out the energy of the absorbed stray light and prevent the device from failure caused by overheating.

A fire-fighting emergency indicating lamp includes a housing, a back embedded box, a light guiding plate, a main circuit part, and a light sparing device for the fire-fighting emergency indicating lamp. The housing is one time molded by cold punching. The back embedded box is an injection moulding. The light sparing device for the fire-fighting emergency indicating lamp includes a light guiding body, a reflection matrix, back reflection film, light sparing film, an LED (light emitting diode) light source, side reflection film adhesive and an insulation adhesive tape; the LED light source is connected with the light guiding body through side reflection film adhesive, and the insulation adhesive tape is clamped and padded in the middle part; the light guiding body is processed by polymethyl methacrylate via one-time formation, the back side of the light guiding body is provided with the reflection matrix with a high reflection rate and is pasted with the back reflection film, a piece of light sparing film with high light transmittance is clung to the front face of the light guiding body, the remaining three faces of the light guiding body are pasted with the side reflection film adhesive; and the side face of the light guiding body is provided with an LED light source installation groove. The lamp has the advantages of a light weight, low energy consumption, high brightness, little light loss, high efficiency, convenience and rapidness in assembly and maintenance and the like.

The invention provides a light emitting device and a projection system, which relate to the technical field of lighting. The light emitting device comprises an excitation light source, a dichroscope,a dodging element, a cambered surface reflection element and a wavelength conversion device. The excitation light source is located on one side of the dichroscope, the cambered surface reflection element is located on the other side of the dichroscope, the dodging element is arranged between the dichroscope and the cambered surface reflection element, and the wavelength conversion device and the dodging element are located on the same side of the cambered surface reflection element. The cambered surface reflection element is ellipsoidal, and the end face center point of the end, away from thedichroscope, of the dodging element and the wavelength conversion point of the wavelength conversion device are located at the two focuses of the cambered surface reflection element respectively. According to the light emitting device and the projection system provided by the invention, through the dodging element and the cambered surface reflection element, the dodging effect of the exciting light incident on the wavelength conversion material is improved, the heat dissipation space of the wavelength conversion device is increased, and the collection efficiency of the excited light is improved, so that the light emitting efficiency is improved.

The present invention discloses a light-homogenized rod. The internal portion or/and end face of the light-homogenized rod are provided with a diffraction layer, and the diffraction layer is providedwith a diffraction pattern. The internal portion or/and the end face of the light-homogenized rod are provided with the diffraction layer comprising the diffraction pattern, the diffraction layer enhances the light homogenizing effect to obtain better homogenized light in a condition without increasing the light-homogenized rod or increasing a micro-lens array so as to facilitate reduction of thelength of the large visual field illuminating system, simplify the regulation difficulty of the optical path, and therefore, the light-homogenized rod and the illuminating system are especially suitable for the large visual field illuminating/projection optical system.

The invention provides a bending-deformation-resistant frosted PC (polycarbonate) composite material which is prepared from a PC (polycarbonate) resin, glass fibers, frosted powder, calcium sulfate whiskers, an antioxidant, a dispersing agent and a flame retardant. The glass fibers and frosted powder are mixed according to the specific proportion, and the weight ratio of the glass fibers, frosted powder and calcium sulfate whiskers is limited, thereby implementing better dodging effects.

The invention discloses a Fresnel lens design method for regional dodging illumination based on a Lambert-type LED light source, and the method comprises the steps: calculating the edge light deflection angles of different regions according to the law of conservation of optical expansion, determining the focal lengths of different regions, and determining the surface type of a Fresnel lens for regional dodging illumination. The Fresnel lens design method is suitable for LED Lambert light emitting or similar Lambert light emitting spotlighting occasions; LEDs with Lambert emergent light are subjected to regional convergence, so that received light rays are more uniform, the problem of non-uniform light spot energy distribution after convergence of the Fresnel lens due to non-uniform light distribution of an LED light source is solved, and the uniformity of an LED lighting system using the lens to condense light can be improved; meanwhile, the design is performed by changing the focal length of the Fresnel lens in each region, so that the design efficiency is greatly improved.

The present invention discloses a multi-waveband LED fluorescence microscope. The multi-waveband LED fluorescence microscope comprises a microscope main body and a multi-waveband LED light source system. The multi-waveband LED light source system is connected with a fluorescence light source interface of the microscope main body through a connection sleeve, the multi-waveband LED light source system comprises a LED base plate, N LED chips and/or LED chip sets, the LED base plate is provided with a first circumference, the N LED chips and/or the LED chip sets are arranged on the first circumference at intervals, the N LED chips and/or the LED chip sets comprise n wavebands with different central wavelengths, N>=n>=2, and the multi-waveband LED fluorescence microscope further comprises an optical path sub system and a control sub system, and the control sub system is configured to control a LED chips and/or LED chip set with selected wave length to face a first incident area of the optical path sub system. The multi-waveband LED fluorescence microscope can achieve automatic replacement for the LED chip with selected wave length, so that the usage is convenient.

The invention provides an illumination system for an X-ray machine and laser projection equipment, and the system comprises a light guide tube, a lens group, and a tube body, wherein the interior of the tube body is provided with a ball socket. The system also comprises a sphere which is provided with a connection through hole, is disposed in the ball socket and makes contact with the spherical surface of the ball socket, wherein there is a spherical rotation freedom degree between the sphere and the ball socket. The light guide tube is disposed in the connection through hole, and is fixedly connected with the sphere. The system also comprises an adjustment system, and the adjustment system comprises a telescoping device and an elastic part, which are arranged to be opposite to each otherin the same direction. The telescoping device and the elastic part are disposed on the tube body in the radial direction of the tube body. On the one hand, an adjustment structure can be used for adjusting the position of the light guide tube, and improves the light uniformizing effect; on the other hand, one end of a first housing and one end of a second housing are used for forming a ball socketstructure, thereby enabling the connection relation between the first housing and the second housing to remain unchanged even during the adjustment of the light guide tube, and guaranteeing the stability of position connection of a relative structure of the light guide tube and the lens group.

The invention belongs to the technical field of light guiding of LED lamps, and particularly relates to a novel LED lamp light-guiding structure. The novel LED lamp light-guiding structure comprises an LED light source and a light guiding block, the light guiding block is provided with an inlet convex face and a total reflection face, the LED light source faces the inlet convex face, and the totalreflection face is used for total reflection of refraction light rays of the inlet convex face; a plurality of light condensation grooves are evenly distributed on the light guiding block, each lightcondensation groove comprises a light condensation convex face and a receiving flat face facing the light condensation convex face, and the light condensation convex faces and the receiving flat faces are sequentially arranged in the positive direction of reflection light rays of the total reflection face; and a light-out flat face is arranged at the tail end, in the positive direction of the reflection light rays of the total reflection face, of the light guiding block, and the receiving flat faces and the light-out flat face are oppositely arranged. The novel LED lamp light-guiding structure has the beneficial effects that the effect of the uniform light rays can be achieved, the light ray loss is very small, and the light ray utilization rate is increased; material configuration is less, the structure is simple, the size is small, and the space utilization rate is increased; and a traditional sawtooth-shaped structure is omitted, manufacturing is convenient, the quality after forming is good, the light uniformity is good, and the appearance of the light guiding structure is optimized.

The invention discloses a parallel light source. The parallel light source comprises a light source body and a light collector, wherein the light collector is arranged over the light source body in acovering manner; the inner wall of the light collector is provided with a reflecting surface used for reflecting light; the parallel light source further comprises a light shielding plate and a lens unit which are positioned outside the light collector and are sequentially arranged along the route of a light path; the lens unit comprises bioconvex spherical lenses which are used for transforming non-parallel light into parallel light; the light shielding plate is fixedly provided with a light guide tube; the light guide tube and the route of the light path are coaxially arranged; the axis of the light shielding plate is provided with a through hole which penetrates through the light shielding plate and communicates with the inlet of the light guide tube; light enters the light guide tube through the inlet only; the reflecting surface is overlapped with the border of a preset spheroid; and the spheroid takes the light source body and the inlet of the light guide tube as the focuses. Theparallel light source disclosed by the invention can effectively improve the uniformity of the light source; and meanwhile the balsaming lenses can eliminate optical aberration of the light source and can keep the edge of a view field to be clear and sharp.

The invention relates to the field of LED (light-emitting diode) light source illumination, in particular to a light-distributing lens and equipment for a discrete LED light source. An incident plane of the lens comprises an incident side surface and an incident end surface; the incident end surface is a composite surface and comprises a main incident end surface and a sub incident end surface; the sub incident end surface comprises a center sub incident end surface and an off-axis sub incident end surface; the sub incident end surface is a curved surface protruding towards the bottom of the lens; the sub incident end surface is arranged on the main incident end surface. The lens is applied to the discrete LED light source; the sub incident end surface is correspondingly used with each sub light source in the light source; the sub incident end surface converts off-axis light emitted by a sub light source in an off-axis state into on-axis light or paraxial light of the sub incident end surface, wherein the off-axis light is relative to the middle axis of the lens, so that the light intensity of small-angle light can be effectively improved; secondary small-bump lens arrays with a dodging effect are densely distributed on the incident end surface, so that an ideal effect of the illumination light field of the discrete light source which is modulated by the lens is achieved.