38results about How to "Prevent loss of light" patented technology

A light-emitting diode (“LED”) package is disclosed. The LED package includes a substrate, a pad frame, an LED chip and a housing. The pad frame includes a conductive lead divided by insulation materials on the substrate. The LED chip is mounted on the conductive lead. The housing surrounds the LED chip and the conductive lead, and has opening recess exposing the LED chip and a part of the conductive lead. The conductive lead includes a protrusion extended in both directions substantially perpendicular to a longitudinal direction of the housing.

A rod-shaped light guide which does not cause unevenness in color at the portion near an incident face is produced by injection-molding transparent resin such as acryl and its surfaces include a light-emitting surface, a bottom face, left and right sides and end faces. One end face opposes a light emitting unit, and light scattering patterns for scattering light incident from the end face are formed on the bottom face. The light scattering patterns are different in shape between a portion near the end face as the incident face and a portion away from the end face. The light scattering patterns formed at the portion near the incident face are composed of a large number of fine hemispherical concaves, whereas the light scattering patterns at the portion away from the incident face are composed of triangular grooves or half cylindrical grooves, and the axial direction of these triangular grooves or half cylindrical grooves is equal to coincides with the width direction (sub-scanning direction) of the bottom face on which the patterns are formed.

The invention discloses a laser display system and a laser display method based on electro-optical deflection speckle suppression. The system comprises a laser device for generating laser, a polarizer for generating linear polarization light in a specific polarization direction, an electro-optical deflector for deflecting light beams through electro-optical modulation, a long-focal-length focusing lens for focusing the light beams, a scatter plate for scattering the focused light beam and further reducing the coherence of light fields, a dodging module which consists of a micro lens array, a light flux pipe and a focusing lens and is used for collecting the scattered light fields and shaping the light, a linear space light modulator for generating an image and a projection lens component for projecting the image on a screen. The laser display system is simple, controllable, high in stability, low in loss and free of mechanical motion and has a stable structure, and high-quality laser display is realized.

The invention discloses a water protection coating for automobile skeletons and automobile and motorcycles wheels, which essentially comprises by weight the following components: acrylic acid modified polyester 20-55 portions, methylated amino resin 4-20 portions, colorant 2.5-30 portions, dispersing agent 1-9 portions, flatting agent 0.2-1 portions, defoaming agent 0.01-0.5 portions, solving assistant 1-5 portions, pure water 10-30 portions, ethyleneglycol monobutyl ether 5-12 portions, and thixotropic agent 1-3 portions. The film of the coating is of excellent weatherability, resistance to salt fog, resistance to acid and alkaline, resistance to water, resistance to scrubbing by solvent, excellent stiffness, high hardness and resistance to scratching, is of excellent protective and decorative role for automobile skeletons and automobile and motorcycles wheels.

A liquid-crystal projection device includes an organic electroluminescent element that is sandwiched by an organic thin-film layer between an electrode layer that reflects light and a transparent electrode layer that transmits light, and a transparent liquid crystal panel that controls passage of light emitted from the surface of the organic electroluminescent element and also includes a half-mirror layer arranged on the side where light is output from the transparent electrode layer. Some of the incoming light is reflected through the transparent electrode layer to another electrode layer and the rest of the light is transmitted the distance between the half-mirror layer. The electrode layer is set to the optical distance of resonance of the light.

An image pickup apparatus including a half mirror, a phase difference detecting AF sensor, an image pickup device, and a display is provided. The half mirror is provided so as to be movable between a first position on an optical path of the subject image light from the photographing optical system and a second position to which the half mirror is evacuated from the optical path of the subject image light. When the half mirror is in the second position, the image pickup device generates an actual photographing image on the basis of the subject image light reaching the image pickup device from the photographing optical system without passing through the half mirror.

The invention relates to a dark green tea herbal drink and a preparation method of the dark green tea herbal drink. The dark green tea herbal drink is prepared from the following raw materials including black green tea, hawthorn, siraitia grosvenorii, lophatherum gracile, smoked plums, xylitol, honey and reverse osmosis pure water, wherein the black green tea, the hawthorn, the siraitia grosvenorii, the lophatherum gracile and the smoked plums are all measured after being dried; the raw materials including the black green tea, the hawthorn, the siraitia grosvenorii, the lophatherum gracile and the smoked plums are subjected to water extraction, wherein the black green tea is subjected to water extraction independently, leaching solutions are subjected to mixing, cooling and sedimentation, supernatant is collected, the xylitol and the acacia honey are added to the supernatant, the water is added to the mixture, the water and the mixture are mixed evenly at a constant volume, and the dark green tea herbal drink is obtained after filtration and sterilization. According to the dark green tea herbal drink and the preparation method of the dark green tea herbal drink, the compatibility of the raw materials in a formula is conducted in combination with theories of traditional Chinese medicine, various functions of the raw materials are preserved, damage of ingredients of the lophatherum gracile and other cold raw materials to the spleen and stomach is eliminated through intercoordination of the raw materials, and the prepared dark green tea drink tastes unique; since the extraction temperature is low, the situation that high temperature extraction causes a cooked taste and reduces leaching efficiency of tea polyphenols is avoided, and the effects that the taste is softened, functional components and natural fragrance are protected against damage are achieved.

Provided is an optical system and an imaging apparatus provided with the optical system. The optical system includes: a first lens having negative refractive power; a second lens having negative refractive power; a third lens having positive refractive power; and a fourth lens having positive refractive power, the first lens, the second lens, the third lens, and the fourth lens being disposed in this order from an object side. The optical system satisfies a predetermined condition relating to the focal length of the optical system and the distance on the optical axis between an exit pupil and an imaging plane in the optical system.

The invention belongs to the field of health care products, and in particular relates to oral liquid for relieving dysmenorrhea and a preparation method of the oral liquid. The oral liquid for relieving the dysmenorrhea provided by the invention mainly consists of onions, grapes, flos rosae rugosae, flos carthami, brown sugar and a stabilizer. The oral liquid for relieving the dysmenorrhea provided by the invention is reasonable and scientific in compatibility; and various components are coordinated, so as to take effects on enhancing an analgesic effect and improving unsmooth menstrual discharge and other discomfort in menstrual period. Meanwhile, the oral liquid for relieving the dysmenorrhea provided by the invention is high in stability and is capable of effectively avoiding the phenomenon that the oral liquid gets muddy, dull or deposited in a shelf storage process, which is conducive to the long-term preservation of the finished product (the oral liquid).

The invention provides a luminous keyboard, comprising multiple keys and one backlight module arranged below multiple keys. The backlight module comprises one light blocking plate, one light guiding plate and one reflecting plate, and the light blocking plate, the light guiding plate and the reflecting plate are overlaid in order from top to bottom. The light blocking plate is provided with one first cutting opening and one first cutting opening periphery defined by the first cutting opening, the reflecting plate is provided with one second cutting opening and one second cutting opening periphery defined by the second cutting opening, and one upper surface of the second cutting opening periphery of the reflecting plate passes through one perforation of the light guiding plate to be stuck on one lower surface of the first cutting opening periphery of the light blocking plate. Therefore, when one object passes through the first cutting opening and the second cutting opening, the first cutting opening periphery and the second cutting opening periphery closely cover the object by virtue of respective elastic restoring forces.

The invention provides an optical light distribution module. The optical light distribution module comprises a light transmission device which is configured to transmit the light emitted by an LED light source from the back side of the light transmission device and a reflecting device which is coupled to the light transmission device and configured to block and reflect the light from the LED lightsource. A bulb lamp structure which is designed based on the above module comprises the LED light source which is arranged in an annular configuration and the above optical light distribution modulewhich is fixed on a lightening face of the LED light source. The module has the beneficial effects that a bulb lamp which uses the optical light distribution module is better in lightening efficiencyand capable of configuring a uniform, effective and centralized exit light path and avoiding the light loss; the optical light distribution module is applicable to the bulb lamps of any size and any power.

The invention provides novel nanoscale liquid titanium dioxide for papermaking, and relates to the technical field of titanium dioxide. The novel nanoscale liquid titanium dioxide for papermaking is prepared from the following raw materials in parts by weight: 600-660 parts of deionized water, 45-105 parts of propylene glycol, 250-310 parts of stilbene phenol polyoxyethylene ether, 67-73 parts ofhigh titanium slag, 1-7 parts of aluminium sulfate, 1-7 parts of zinc sulfate, 4-10 parts of ferrous sulfate, 2-8 parts of phosphoric acid and 7-13 parts of potassium sulfate. When the novel nanoscaleliquid titanium dioxide for papermaking is used, the purity and the brightness degree of the color of paper can be effectively improved, and meanwhile, the titanium dioxide can be effectively prevented from discoloring and losing gloss during long-time storage, so that the actual use effect of a product is effectively improved, the actual production cost can be effectively reduced, and the actualeconomic benefit is improved.

The preparation method comprises the following steps: crushing a tea leaf raw material, spraying a compound enzyme solution, uniformly stirring and mixing, carrying out enzymolysis, sequentially adding distilled water, Luzhou-flavor liquor and sodium chloride or a dried sodium chloride tea soup substance into the material subjected to enzymolysis, distilling and collecting to obtain the tea aroma extract. According to the preparation method of the tea aroma extract, the white spirit and the sodium chloride or sodium chloride tea soup dry matter are used for assisting in distillation and extraction of tea aroma substances for the first time, so that the yield of the aroma substances can be remarkably increased; meanwhile, the phenomena of volatilization loss, precipitation turbidity, microorganism growth and the like of aromatic substances in the tea aroma extract liquid caused by long-term storage can be inhibited, and the storage period is prolonged; and the prepared tea fragrance extract liquor is green, safe and edible. The invention further provides application of the tea aroma extract liquid prepared by the preparation method in preparation of food, skin care products and perfume, and the tea aroma extract liquid can endow products with natural and rich tea aroma.

The invention relates to a quantum dot reflective material and a preparation method and application thereof. The reflective material prepared by the method comprises a base layer, and a quantum dot reflective layer is arranged on the base layer. The material can be widely applied to reflecting cups, reflecting sheets and other materials. Based on the quantum dot reflective layer on the surface of the quantum dot reflective cup/reflective sheet, the LED light source can be excited to emit light at a non-direct angle, and the light is converted into spectral color light lacking in a color rendering area, so that the overall color rendering index of the light source using the quantum dot reflective material is improved.