3results about How to "Easy to overlap" patented technology

The application provides laminated glass, a head-up display system and a vehicle. The laminated glass has a projection display area, the projection display area has a wedge structure; there is a first relationship curve between a vertical ghost value observed by an upper eyebox area corresponding to a farthest virtual image surface and a wedge angle of the wedge structure; there is a second relationship curve between a vertical ghost value observed by a lower eyebox area corresponding to a nearest virtual image surface and the wedge angle of the wedge structure; and the wedge angle of the wedge structure is a wedge angle corresponding to an intersection point of the first relationship curve and the second relationship curve. The application limits the wedge angle of the wedge structure at the intersection point between the first relationship curve of the upper eyebox area associated with the farthest virtual image surface and the second relationship curve of the lower eyebox area associated with the nearest virtual image surface, thereby solving the ghost elimination conflict caused by a large difference in the imaging distance of the far and near images, reducing the ghost tolerance, improving the image definition, and realizing the effect of overlapping the far and near image ghosts and the main image by using a single wedge angle of the laminated glass.

The application relates to the technical field of organic photoelectric materials, and particularly discloses an aryl-trisubstituted benzanthracene organic electroluminescent compound and a double-emitting-layer organic electroluminescent device thereof. The structural general formula of the aryl-trisubstituted benzanthracene organic electroluminescent compound is shown as formula I, Ar1 and Ar3 each independently represent any one or a combination of any two of deuterated or non-deuterated aryl with 6-30 carbon atoms, deuterated or non-deuterated condensed ring aryl with 10-30 carbon atoms; Ar2 represents deuterated or non-deuterated phenyl or naphthyl; any hydrogen in formula I can be independently substituted by deuterium. By introducing the substituent defined in the application to the 4th, 7th and 12th positions of benzanthracene, the thermal stability of the compound can be improved, the molecular orientation can be improved, the PL spectrum peak of the compound provided by the application can be well overlapped with the absorption spectrum of a BD material, and energy transmission is more favorable.

The invention discloses an antimonate near-infrared luminescent material and a preparation method thereof. The chemical expression of the luminescent material is YGd (Sc1-x-yGay) SbO7: xCr < 3 + >, in the formula, x is equal to 0.003-0.1, and y is equal to 0-0.97. The preparation method comprises the following steps: weighing the corresponding raw materials of yttrium oxide, gadolinium oxide, scandium oxide, gallium oxide, antimony oxide and chromium oxide according to the stoichiometric ratio of the chemical formula, then grinding and uniformly mixing the raw materials to obtain a mixture, putting the mixture into a crucible, sintering for 2-7 hours in a high-temperature furnace in an air atmosphere at 1100-1300 DEG C, and cooling to room temperature to obtain the yttrium oxide-gadolinium oxide-scandium oxide-gallium oxide-antimony oxide composite material. And cooling to room temperature to obtain the antimonate near-infrared luminescent material. The obtained antimonate near-infrared luminescent material emits near-infrared light under the excitation of a blue light chip, and the emission peak value is near 760 nm. The luminescent material is good in dispersity, uniform in granularity, good in chemical stability and high in luminous efficiency, an excitation band of the luminescent material covers purple and blue light regions, and the luminescent material can be used as a near-infrared luminescent material for a blue light LED.