61results about How to "Improve light guide efficiency" patented technology

A light guide module of optical mouse is disclosed. The light guide module comprises a LED die within a light guide input of light guide means. The light guide input comprises an internal paraboloid. Light emitted by the LED die and parallel reflected from the paraboloid is impinged on a light guide output.

The invention discloses a solar illumination device which comprises a natural light collecting device. The top of the natural light collecting device is provided with an automatic cleaning device, a solar battery plate base recombiner is connected with the lower portion of the natural light collecting device in a buckled and sealed mode and is provided with multiple solar luminosity sensors, a reflection grating assembly is arranged on the inner wall of the solar battery plate base recombiner in a buckled mode, the lower end of the reflection grating assembly is fixedly provided with a light guide tube, a dimming device is arranged in the light guide tube, the dimming device is provided with a storage battery and a solar intelligent controller on the outer wall of the light guide tube, the storage battery is connected with a photovoltaic power generation assembly and the solar intelligent controller in the solar battery plate base recombiner through wires, the bottom end of the light guide tube is connected with a solar illumination device base, the bottom of the base is connected with a diffuser, and the base is provided with an LED illumination lamp set provided with an LED radiator in a matched mode. A natural light source is used for lighting and illumination during the day, photovoltaic power is combined with the LED lamp set for illumination at night, and accordingly the illumination requirements of use areas in a building are met.

The invention discloses a reflection-type sunshine illuminating system. The reflecting-type sunshine illuminating system comprises a light collecting device, an optical fiber coupler, a fiber optics bundle, and a semi-light-penetrable semi-trans-form light conduction lighting device, wherein the optical fiber coupler is connected with the light collecting device and is used for enabling sunshine which is collected through the light collecting device to be coupled in optical fibers, the fiber optics bundle is connected with the optical fiber coupler, and the semi-light-penetrable semi-trans-form light conduction lighting device is connected with the fiber optics bundle. The semi-light-penetrable semi-trans-form light conduction lighting device comprises a light guiding pipe and a plurality of semi-light-penetrable semi-trans-form prisms, wherein the plurality of semi-light-penetrable semi-trans-form prisms are arranged inside the light conducting pipe in a distributing mode at intervals. A light outlet is formed in the bottom portion of the light guiding pipe of the semi-light-penetrable semi-trans-form light conduction lighting device and a diffusing device is installed at the portion of the light outlet. The reflection-type sunshine illuminating system is simple in structure, reasonable in design, low in realizing cost, and capable of being widely applied to the fields such as gymnasium illumination, market illumination, underground illumination, underwater illumination, tunnel illumination, and road illumination. Besides, the fields of development and utilization of solar energy and the utilization rate are improved.

An optically reflective plate used for air conditioner, refrigerator, etc is composed of a wedged reflecting plate made of transparent material and with smooth internal surface, and a light source installed at one side of said reflecting plate, which may be ultraviolet light source. Said reflecting plate has a thickness variable with the distance from light source and a concave point array on itsback. The density of concave points varies with the distance from light source. The shading material is arranged on three side surfaces and the back of said reflecting plate. A photocatalytic disinfecting deodourizing unit is installed in the front of said reflecting plate.

The invention discloses a light guide plate manufactured by inner carving, aiming to provide a light guide plate which is characterized in that the light guide spot of the light guide plate does not become yellow because of air oxidation and dust pollution, and the light guide plate improves light guide efficiency, reduces luminous decay and prolongs the service life the light guide plate. The light guide plate is provided with the light guide spot comprising an inner light guide spot manufactured in the light guide plate by inner carving via laser. The invention also provides a manufacture method of the light guide plate and the lighting lamp with the light guide plate. The invention can be used for various fields of lighting, artistic lighting, decorative lighting, bathtubs, artware, artworks, furniture lighting, decorative materials, shopwindows, cabinets, display stands, direction boards and the like.

The present invention discloses a linear light source having light guide with taped saw tooth structures for Charge Coupling Device Module (CCDM). The linear light source comprises a light guide and at least two Light Emitting Diodes (LED's). The light guide includes two incident surfaces, a reflective surface, two refractive surfaces and an ejective surface. The reflective surface has a taped saw tooth structure; the LEDs are disposed at two ends of the light guide. Upon emission of light from the LEDs, light enters into the light guide, reflected by the taped saw tooth structures, and then ejected from the ejective surface. It is possible to form a U-shaped lambert distribution in the sub scanning direction, thereby generating the complementary effect for the pickup lens and the CCD image sensor of CCDM, as well as to create a linearly converged lambert distribution in the main scanning direction.

A front light module includes a light source and a light-guiding plate. The light-guiding plate is disposed outside a panel. The light-guiding plate receives the light emitted by the light source and reflects the light onto the panel. The light-guiding plate includes a first reflecting surface facing the panel and a second reflecting surface opposite to the first reflecting surface. An included angle is formed between the panel and the first reflecting surface or the second reflecting surface. The front light module can reflect the light onto the panel uniformly to generate sufficient brightness.

The invention relates to the field of manufacture of backlight modules and discloses a method for manufacturing a lamp bar and light guide board integrated structure. The method comprises the following steps: S1, manufacturing LED lamps and a circuit board, and arranging the LED lamps on the circuit board so as to form a lamp bar; S2, providing a mold for manufacturing the lamp bar and light guide board integrated structure, wherein the mold comprises a female mold and a male mold which are matched with each other; putting the circuit board of the lamp bar manufactured in S1 in a sinking groove of the female mold, and assembling the male mold and the female mold, wherein a cavity of the male mold is matched with the female mold to form mold holes together, and the LED lamps of the lamp bar are embedded in the mold holes; S3, injecting injection molding materials of light guide boards into the mold holes from an injection molding channel of the male mold; and S4, keeping the pressure until the structure is cooled, and demolding to form a finished lamp bar and light guide board integrated structure. The lamp bar and light guide board integrated structure manufactured by adopting the method disclosed by the invention can be used for solving the problem that the process of sticking the lamp bar and the light guide board is complex in assembly of the backlight module. The invention further provides the mold for manufacturing the lamp bar and light guide board integrated structure, and the backlight module.

The present invention discloses a brain volumetric measuring method for measuring brain volumetric changes of a subject. The method at least comprises the following steps. First, a light source is provide and emitted into the head of the subject through a light source emitting position. And then, a first optical signal is obtained by receiving numerous scattered photons from the head of the patient through several second positions of. A second optical signal will be obtained by processing the first optical signal. The present invention also discloses a brain volumetric measuring system for performing the abovementioned method.

The invention discloses a concentric-circular-arc-curve-arrangement micro-lens array light-equalization plate which comprises an Acrylic board. The lower surface of the Acrylic board is a light-reflection surface, the upper surface of the Acrylic board is a light-outgoing surface, and one side surface thereof is a light-incoming surface; a plurality of V-shaped grooves, in concentric circular arc curve arrangement, are engraved in the light-outgoing surface; the V-shaped grooves are distributed in concentric circular arc curves, which are not equal in space between thereof and which take the center point of an edge, where the light-outgoing surface and the light-incoming surface of the Acrylic board meet, as the circle center; and the V-shaped grooves extend from the light-incoming surface to a tail end surface of the Acrylic board. The invention also discloses a manufacturing method of the concentric-circular-arc-curve-arrangement micro-lens array light-equalization plate. The light-equalization plate has the advantages of being small in the number of LED light sources, being efficient and energy saving, being high in light guiding efficiency, being uniform in light outgoing and being high in brightness and the like. Micro cutting ensures dimension precision and shape precision of a micro-lens array of the light-equalization plate, so that the internal light path of the light-equalization plate is allowed to be strictly controllable; and the light-equalization plate is long in service life, high in light guiding efficiency, and uniform in light outgoing.

The invention discloses a durable antibacterial composite textile fabric, and belongs to the technical field of textiles; a plurality of light release microspheres are introduced in the middle in theform of a composite fabric, and light guide beams on the light release microspheres extend to the surface of the fabric to absorb external light and transmit the light to the internal light release microspheres; by means of the characteristics of a photo-thermal conversion material, light energy can be efficiently converted into heat, control balls on the light release microspheres are heated andare forced to shrink and deform while being heated and softened, so that slow release holes in the light release microspheres are opened, and at the moment, an antibacterial bag in the light release microspheres automatically deforms, shrinks and slowly extrudes the antibacterial liquid; on one hand, the antibacterial liquid is absorbed by the fabric and performs a slow-release antibacterial effect, and on the other hand, the control balls are cooled to restore the shape to seal the slow-release holes again, so that the antibacterial liquid can be released quantitatively at regular intervals to reduce loss caused by water washing, and the antibacterial life of the fabric is greatly prolonged.

A method of accent lighting and an accent light including an LED and a light guide with polished proximal and distal ends. The LED is optically coupled to the proximal end and the distal end reflects the LED light back into the guide. Additionally, the distal end may include a reflective coating and the guide may be acrylic. Moreover, the guide may be supported by a vinyl support glued to the guide whereby the light output about doubles. Also, a longitudinal etch on the acrylic guide may make the light output about consistent along the guide.

The invention discloses an anti-ultraviolet planar light source optical structure, an anti-ultraviolet diffusion layer and an LED panel light. The optical structure comprises an anti-ultraviolet diffusion layer, a light guiding layer and a reflective layer. The light guiding layer has two opposite surfaces including a back surface and a light emitting surface. The reflective layer is located on the back surface of the light guiding layer, and the anti-ultraviolet diffusion layer is located on the light emitting surface of the light guiding layer. A plurality of light guiding points are arranged between the reflective layer and the light guiding layer. The anti-ultraviolet diffusion layer is a diffusion plate made of an anti-ultraviolet material, and the diffusion plate comprises transparent plastic and master batch, wherein the transparent plastic accounts for 92-99.5% of the total weight of the diffusion plate, and the master batch accounts for 0.5-8% of the total weight of the diffusion plate. The anti-ultraviolet diffusion layer is adopted, which can prevent ultraviolet rays in a surrounding external environment from illuminating the light guiding layer through the anti-ultraviolet diffusion layer; the problems such as deformation, discoloration, yellowing and damage of the light guiding layer due to ultraviolet irradiation can be avoided; the light guiding layer is protected; and the problems such as brightness reduction and uneven brightness of the optical structure can be avoided.

The invention provides an input device and a light guide plate thereof; the light guide plate is provided with light transmission and application to the input device; one surface of the light guide plate comprises a first area and a second area; the first area is covered by lighttight material; if the light beam is emitted in the light guide plate, the light beam can emit out through the second area; the input device and the light guide plate thereof can greatly simplify the complex structure and the preparation process of the traditional luminescence keyboard and can effectively improve the light guiding efficiency of the light guide plate.

The invention discloses a light guide plate manufactured by utilizing a 3D printer and a manufacturing method. The light guide plate comprises a light guide casing having a hollow chamber and openings at two ends, a light guide baffle board arranged in the hollow chamber of the light guide casing, and light source units which are mounted at the opening ends of the light guide casing and are used for providing light for the light guide casing and the light guide baffle board, wherein the light source units comprise casing covers detachably arranged at the opening ends of the light guide casing and light sources mounted in the casing covers. The light guide plate has advantages of good light guide effects, cost-saving performance, rapid molding and high production efficiency, and the light guide plate is molded through the 3D printer.

The present invention provides a light guide plate and a backlight module, wherein the light guide plate comprises a bottom surface, a light incident surface and a light-emitting surface. The light-emitting surface and the bottom surface are positioned oppositely. The bottom surface comprises a plurality of screen dots. The screen dots comprise fluorescent powder and are selectively added with diffusion particles. The present invention prevents the phenomenon of color shift and the luminous efficiency degradation due to the fluorescent powder accelerated ageing because of closing to the LED chip.