2021results about How to "Small color difference" patented technology

This invention discloses one display method, which divides the relative original grey values into higher and lower grey values and divides the secondary pixel area into two sets in same color suitable for high and low second grey values; each set displayed grey values are computed from itself pixel and near higher grey value or lower grey value through different weigh proportion to solve the problem if different vision angles.

The invention relates to polyester DTY fiber and a preparation method thereof. The preparation method comprises: metering a modified polyester melt, extruding, cooling, oiling, and winding to preparethe polyester POY fiber. According to the present invention, during the cooling, the longitudinal height is maintained, and the cross section area of the slow cooling chamber is increased while the plate surface temperature of the spinning plate is maintained by using the thermal insulation method; the material of the fiber is the modified polyester, the molecular chain of the modified polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment and a diol chain segment having the branched chain, the structure formula of the diol chain segment having the branched chain is defined in the specification, R1 and R2 are respectively and independently selected from straight chain alkylidene with a carbon atom number of 1-3, R3 is selected from alkyl with a carbon atomnumber of 1-5, and R4 is selected from alkyl with a carbon atom number of 2-5; the chromatic aberration [delta]E of the prepared fiber is less than 0.200; and the preparation process is simple and reasonable, and the obtained fiber has excellent performance.

The invention relates to polyester FDY fiber and a preparation method thereof. The preparation method comprises: metering a modified polyester melt, extruding, cooling, oiling, drawing, carrying out heat setting, and winding to prepare the polyester FDY fiber, wherein the unchanged longitudinal height is maintained during the cooling, the cross section area of the slow cooling chamber is increasedwhile the plate surface temperature of the spinning plate is maintained by using the thermal insulation method. According to the present invention, the material of the fiber is the modified polyester, the molecular chain of the modified polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment and a diol chain segment having the branched chain, the structure formulaof the diol chain segment having the branched chain is defined in the specification, R1 and R2 are respectively and independently selected from straight chain alkylidene with a carbon atom number of 1-3, R3 is selected from alkyl with a carbon atom number of 1-5, and R4 is selected from alkyl with a carbon atom number of 2-5; the chromatic aberration [delta]E of the prepared fiber is less than 0.200; and the preparation process is simple and reasonable, and the prepared fiber has excellent performance.

An object of the present invention is to provide a light emitting apparatus that allows it to easily control the driving of LED and has high color rendering properties.

The light emitting apparatus comprises the first light emitting device 108a that has first peak emission wavelength in blue region and emits blue light, the fluorescent material 140 that is excited by the light from the first light emitting device 108a and emits red light, the second light emitting device 108b that has second peak emission wavelength which is longer than the first peak emission wavelength and is shorter than peak emission wavelength of the fluorescent material 140, and the second light emitting device 108b that emits green light of second peak emission wavelength which is longer than the first peak emission wavelength, so as to emit light generated by blending of blue light, green light and red light to the outside.

The invention provides a metal salt-free sealing agent for an aluminum alloy anodic oxide film, belonging to the technical field of aluminum alloy anodic oxide film post treatment. The sealing agent of the invention is prepared by water solution composed of 1.0-10g/L of a hydration accelerator, 0.01-2g/L of a wetting agent, 0.01-3g/L of an ash inhibitor and 1-15g/L of a pH buffering agent, wherein the pH of workpiece fluid is 5.5-6.5, the operating temperature is 70-90 DEG C, and the sealing speed is 1.0-2.0min/um. The metal salt-free sealing agent creatively adopts organic compounds which are easily subject to biodegradation, does not contain any metal ions of nickel, cobalt, magnesium, calcium, lithium and the like as well as fluorinions, and obtains satisfactory sealing effect of the nano-pores of the aluminum alloy anodic oxide film by virtue of the scientific and coordinated component formula of the water solution; the aluminum alloy anodic oxide film obtained by seal treatment through the sealing agent has the advantages of good corrosion resistance, capability of meeting the requirements of GB 14952.1-94, good light-protection and color-protection properties of a film layer, no ash and pruina, no water stain after drying as well as light flowing color and small color difference change in case of sealing the organic dyeing film; and the metal salt-free sealing agent is widely applicable to sealing treatment of an original-color anodic oxide film, an electrolytic coloring anodic oxide film, a hard oxide film and a dyeing anodic oxide film.

A liquid crystal display device includes a liquid crystal display panel for performing color display, and a backlight unit that includes RGB-LEDs and white LEDs. The RGB-LEDs and the white LEDs are different from each other in color difference between a white point and each primary color point in the respective images displayed on the liquid crystal display panel when the RGB-LEDs and the white LEDs are individually turned on. Further, the light source includes a backlight control section arranged to select one type of the light-emitting elements to emit light, so that the color difference in an image display on the liquid crystal display panel is smaller when the image has a higher lightness.

The invention provides a pulp forming mold integrally turning automat and a production process of the automat. The automat comprises a pulp box, a shifter, a receiving frame, a hot-pressing upper mold, a forming mold device and racks, wherein the pulp box is arranged on a lower rack and the forming mold device is arranged on an upper rack; the shifter is arranged on a sliding guide of the lower rack, the hot-pressing upper mold is arranged on the upper rack next to the forming mold device; and the receiving frame is connected with one end of the shifter. The automat further comprises a feed shifter mold, a first hot-pressing lower mold and a second hot-pressing lower mold, wherein the feed shifter mold is arranged on the upper frame and in parallel to the hot-pressing upper mold side far from the forming mold device, the second hot-pressing lower mold is arranged in the shifter end near the receiving frame, and is parallel to the first hot-pressing lower mold along the moving direction; a waiting position is arranged between the feed shifter mold and the forming mold device; and the forming mold device is further provided with a pulp turning and sucking mechanism and an extruding mold. The automat of the invention can realize two production processes to meet requirements of various production draft angles of different products, so as to satisfy customer demands.

The invention discloses a piecedyed jet black fine-spun facing and a preparation method thereof, and relates to the technical field of wool spinning. Raw fiber used comprises natural wool fiber. The preparation method comprises steps of preparation, spinning, weaving, dyeing, finishing and the like. The method is characterized in that the raw fiber used further comprises wool natural fiber, and non-wool natural fiber or/and chemical fiber blended spinning material. The preparation method comprises a step of wool top chlorination treatment in the preparation step, or fabric chlorination treatment in the step of dyeing and finishing, further comprises steps of low-temperature plasma treatment in the steps of preparation, spinning or dyeing and finishing to generate obvious dyed color to enhance effect, so even jet black wool and blended-spun and fine-spun facing without dyeing defect can be obtained. Detection by a computer color photometer shows that blackness of the facing is deep, L value is up to 3.5-9.5, chromatic aberration between pieces is small, and delta E is equal to or less than 0.5. No expensive piece goods treating machine is needed, and the method has the advantages oflow cost, simple process and stable quality.

The invention discloses an optical system of a multispectral area array CCD (Charge Coupled Device) imager, relating to the field of design and manufacture of the optical system of the multispectral area array CCD imager and solving the problems that the traditional multispectral imager can only obtain spectrum information of a certain wave band of a target at the same time and can not realize the design requirements of a multispectral optical system with wide wave band range and temperature range and a long back working distance. The system consists of two sets of subsystems, a first set of subsystem realizes spectrum information of untraviolet, blue, green, red and infrared wave bands, and the system obtains information of different wave bands through two lens sets and a corresponding detector and carries out imaging; and a second set of subsystem image the obtained information by adopting two germanium lenses and a long wave infrared detector to realize spectrum information of a long wave infrared wave band. The invention realizes simultaneously imaging of a target at six wave bands by adopting two sets of optical systems and is suitable for multispectral imaging places with strict requirements on the volume and the weight, such as aviation shooting.

A dental instrument 1 adapted for performing osteotomy includes a mounting shank 2 and, in line therewith, a working portion 3 including cutting zones 3A, of which at least part is covered by a coating of carbon-enriched tungsten carbide except for a plurality of annular bands 10 distributed along the length of the working portion to indicate the depth of penetration of the tool into a portion of jaw.

The invention discloses an ultralow bath-ratio yarn dyeing machine with a three-level vane pump, comprising a dye vat, a yarn stand and a vane pump, wherein the bottom of the yarn stand is a yarn stand disk; the yarn stand disk is provided with a hole communicated with a dye liquor input channel in the dye vat; the vane pump is arranged below the whole dye vat and is a three-level vane pump; a shaft of the three-level vane pump is connected with an internal motor shaft coaxially; the dye vat is connected with the inlet of the three-level vane pump; the three-level vane pump comprises an axial flow level, a centrifugal level and a fixed guide vane level; the axial flow level and the centrifugal level are connected with the motor in sequence through the same transmission shaft; dye liquor flows into the axial flow level through an in-flow channel; the dye liquor flowing out of the axial flow level directly enters the inlet of the centrifugal level; and the dye liquor flowing out of the centrifugal level enters an out-flow channel after passing through the fixed guide vane level. During work, the dye liquor in the dye vat does not exceed the yarn stand disk all the time and the bath ratio is lower than 1:3. The ultralow bath-ratio yarn dyeing machine can achieve required lift when the dye liquor in the yarn dyeing machine is lower than a spindle, so as to realize the low bath ratio of the yarn dyeing machine as well as the purpose of saving energy and reducing emission.

The invention discloses a film sheet used for a cover plate. The film sheet comprises a transparent base material, a printing ink layer, a UV texture layer and an optical film layer. The transparent base material comprises a first surface and a second surface opposite to the first surface. The printing ink layer is arranged on the first surface. The optical film layer is arranged on the UV texture layer. The UV texture layer is arranged on the second surface or on the printing ink layer. The printing ink layer is a light-transmit colored layer. The optical film layer is a reflecting layer. The invention also discloses a manufacturing method of the film sheet used for the cover plate. A technology is simple, film coating time is short, processing cost is low, the film sheet is combined with the optical film layer through the printing ink layer so that a color difference of the film sheet can be reduced and a color can maintain consistency, and simultaneously the cover plate which is pasted with the film sheet possesses a texture effect.

The multifunctional super concrete plasticizing agent of carboxylic acid comb grafting copolymer is prepared through the water free radical copolymerization of the following monomers: monomer A with the general expression I in 10-40 wt%, monomer B with the general expression II in 30-70 wt%, monomer C with the general expression III in 10-50 wt%, monomer D with the general expression IV in 3-15 wt%, monomer F with the general expression VI in 0-15 wt%, and reactive defoaming agent E in 0.2-2 wt% of the sum of foregoing five kinds of monomer. The present invention can reduce the shrinkage of concrete, and has good adaptability on cement and admixture material, good dispersivity and slump maintaining performance, high weeping resistance and resolution resistance, small pumping drag, product yield near 100 % and no waste produced in the production process.

The invention relates to ultrafine fiber with high color fastness and a manufacturing method thereof. The method comprises the steps of adding 3-40% coloring agent into a polymer powder to make into colored stock particles; adding the colored stock particles into spinning polymer polyester and/or polyamide in a ratio of 0.2-15%, and mixing; melt extruding the spinning polymer with a conjugate spinning machine, and coiling to obtain colored POY composite fiber; stretching and false-twist texturing to obtain colored fiber with high color fastness; and splitting with a basic hydrolysis method to obtain colored ultrafine fiber with high color fastness. The colored ultrafine fiber with high color fastness has excellent handfeel and color fastness to washing and light, and contains mass-colored dyeing components, so as to dispense with dyeing after being made into a textile. The colored ultrafine fiber has the advantages of simple process, low cost, low pollution, small product color difference, good color fastness, low fading liability, wide color spectra, and vivid and bright color.

The invention discloses a spectrum beam combination device for realizing twice diffraction by using the transmission grating of a plated reflecting film. The spectrum beam combination device comprises a semiconductor laser unit light source, a slow-axis collimated column lens, a conversion lens, a transmission grating and an output coupling mirror. The transmission grating of the back plated reflecting film is used as a diffraction element, namely the reflecting film is plated at the back of a grating surface, so that the dispersive power of the grating can be doubled by an incident beam through the diffraction of the transmission grating twice. According to the spectrum beam combination device, the restriction that the dispersive power of the diffraction grating is limited in traditional spectrum beam combination is overcome, the number of beam combination elements can be increased in the gain line width of the material and the high-efficiency diffraction wavelength range of the grating, and the output power is obviously improved, or the length of a resonant cavity can be shortened when certain output spectrum width is guaranteed, so that the structure of a laser unit is compacter, and the mode of the laser unit is stabler.

The invention provides a large-field-angle eye lens optical system used for a head worn displayer. The large-field-angle eye lens optical system comprises a first lens, a second lens and a third lens which are coaxially arranged from a human eye observation side to a displayer side in turn along an optical axis direction, and the first lens and the third lens are positive lenses and the second lens is a negative lens. The surface, which faces the human eye observation side, of the first lens convexly faces the human eye observation side, and the radius of curvature is a positive value. The surface, which faces a diaphragm, of the second lens concavely faces the human eye observation side, and the radius of curvature is a negative value. Meanwhile, the material, the focal length and the position of the first lens, the second lens and the third lens meet a certain relation so that an image displayed on a display device is enabled to be imaged in human eyes through amplification of an eye lens. The eye lens has advantages of large aperture, large field of view, high resolution, low distortion and small size so as to be suitable for the head worn displayer and similar devices.

The invention provides a LCD including an insulating substrate; a plurality of first signal lines formed on the insulating substrate; a plurality of second signal lines crossing and insulated from the first signal lines; a plurality of thin film transistors (TFT) coupled with the first and second signal lines; and a plurality of pixels including a plurality of first sub-pixel electrodes coupled with the TFTs and a plurality of second sub-pixel electrodes capacitively coupled with the first sub-pixel electrodes, wherein the pixels include a red (R) pixel, a green (G) pixel, and a blue (B) pixel and a voltage ratio or an area ratio of the second sub-pixel electrode with respect to the first sub-pixel electrode is different among the R, G, and B pixels to improve a brightness ratio of R, G, and B components at a lateral position.

The invention discloses a manufacturing method of a laminated veneer lumber, which comprises the following steps of: 1) material preparation; 2) carbonization; 3) maintaining; 4) gluing and laying up; 5) cold pressing; 6) hot pressing; 7) edging and sawing; 8) and sanding and packaging. The manufacturing method of the laminated veneer lumber is simple, and the manufactured laminated veneer lumber has good size stability and high structural strength and is not easily deformed.

A vehicle headlight of a small projector type can provide a favorable light distribution for an overhead sign area along with a light distribution used as a low beam. The headlight can include a semiconductor light source and a projector lens including first, second and third light-emitting surfaces. The headlight can project light having high brightness underneath a horizontal cut-off line while projecting other light in the downward direction using the first and third light-emitting surfaces. Additionally, the headlight can be configured to illuminate light having small chromatic aberration toward the overhead sign area using the second light-emitting surface located between the first and third light-emitting surfaces. Thus, the headlight can provide a favorable light distribution pattern used as a low beam and a favorable light distribution pattern for the overhead sign area using the light that color separation is inhibited so as to conform to a vehicular standard.