3results about How to "Improve the projection effect" patented technology

The application discloses a picture motion compensation method and system in multi-screen combination and a storage medium, and relates to the field of picture display. The method comprises the following steps: acquiring first picture information and second picture information of different screen blocks respectively; determining distance direction offset and direction offset of picture pixel values of the first picture information and the second picture information based on a cross-correlation algorithm; correcting the distance direction offset and the direction offset until absolute values of the distance direction offset and the direction offset are within a preset threshold; calculating picture display frequencies of the first picture information and the second picture information, adjusting time of a target splicing boundary of the first picture information and the second picture information based on the picture display frequencies; and multiplying a correction result of the distance direction offset and the direction offset and a time adjustment result of the target splicing boundary to obtain an offset compensation amount, and realizing picture motion compensation in multi-screen combination by using the offset compensation amount. The application better solves the problem of misalignment at a screen splicing position.

This utility model discloses a graphics card cooling fan structure with projection effect, relating to the field of graphics card fan technology. It includes a mounting bracket, with a fan body mounted on the bottom of the bracket via a fan housing. A mounting base is mounted on top of the fan housing, and an LED light strip is installed inside the mounting base. The mounting base is mounted on the mounting bracket via a convenient installation component. The fan housing and the mounting base are movably connected via a height adjustment component. This graphics card cooling fan structure with projection effect, through the convenient installation component, allows the mounting base to be removed from the mounting bracket simply by pushing the movable clamps on both sides outwards until they are no longer in contact with the mounting base, compressing the springs. This simplifies the disassembly and assembly process, facilitating maintenance. Simultaneously, the height adjustment component allows for the adjustment of the distance between the fan housing and the mounting base, enriching the projection effect.

The utility model discloses a kind of projection optical lens and projection optical system, it is related to projection lens technical field, wherein, including first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, eighth lens, ninth lens and emitting light chip sequentially arranged from object side to image side along optical axis, the refractive power of first lens, second lens, fifth lens, seventh lens is negative, the refractive power of remaining lens is positive;Wherein, first lens, second lens are plastic aspheric lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, eighth lens and ninth lens are glass spherical lens, the aperture value F of projection optical lens is less than or equal to 2.0;The lens of utility model provides, and picture brightness is high, by different lens mutual combination and reasonable allocation refractive power, with low cost, high brightness and very good abenign performance, picture is brighter, projection effect is better.