33 results about "Slide projector" patented technology

The ivnented illuminator of the discharge lamp includes the tube shaped case shell mode of transparent material, a pair of discharge electrodes with the gap between them, inserted into the case shelland the closure plug. The electrode axes of the discharge electrodes are fixed on the closure plug respectively. The position of the discharge electrode can be adjusted along the axis direction in the case shell. The discharge gas is filled in the discharge chamber formed by the case shell and the closure plug. The lamp can be widely used in the daily life and industrial area, such as street lamps, hanging type projection lamps and in cine-cameras, slide projectors as the lighting instrument for advertisement and illumination.

The invention relates to a filmstrip take-up device used for an integral electromechanical stage, wherein, the mechanical part comprises a slide storage device and a slide positioning device, which are arranged on both sides of the filmstrip device respectively; the electric control part comprises a controller, wherein, the signal receiving end of the controller is separately connected with a network interface, a man-machine interface module and a photoelectric switch; the signal output end of the controller is separately connected with the signal input ends of a motor driver of a front slide storage shaft and a motor driver unit of a rear slide storage shaft. The invention has the advantages that the traditional manual insertion of slide is replaced; the work efficiency is greatly improved; a plurality of projection type slide projectors can be work synchronously, thus, the time difference in manual slide replacement is avoided; meanwhile, the various background can also be replaced at any moment depending on performance requirements and the requirement of various large scale performance is satisfied.

The invention relates to a hand-held illuminating lamp which can also be called a flashlight. The technical scheme adopted by the invention is that the hand-held illuminating lamp with a laser slide projector is characterized in that a laser radiation device is arranged between a lamp holder and a barrel; the laser radiation device comprises a mounting rack, laser devices, a turnplate and turning wheels; the periphery of the turnplate is provided with accommodating cavities corresponding to the positions of the laser devices; the turning wheels are respectively arranged in the accommodating cavities; the bottom part of each turning wheel accommodating cavity is provided with a through hole; a slide covers on the corresponding through hole; each turning wheel is provided with a hole penetrating the through hole at the bottom part of the corresponding turning wheel accommodating cavity; and the corresponding hole is also provided with the slide. Through adopting the scheme, in order to overcome the problems existing in the prior art, the invention provides the novel hand-held illuminating lamp with the laser slide projector, which is provided with laser radiation patterns which can be changed.

The invention discloses a novel numerical control mechanical transmission mechanism of a slide projector. The novel numerical control mechanical transmission mechanism comprises a slide changing mechanism, a focusing mechanism, a drive mechanism and a drive wheel. The focusing mechanism is arranged on a base of the numerical control mechanical transmission mechanism of the slide projector. The drive wheel is provided with multiple drive blocks which are in transmission contact with a pushing mechanism. The focusing mechanism is arranged on the upper portion of a worm, and a motor and the drive wheel are coaxial. The slider changing mechanism is connected with a friction wheel through a driving shaft. An installation groove is formed in the slide changing mechanism. A piston rod is arranged in the focusing mechanism. The right side of the drive wheel and the right side of a lens tube are provided with dust rings. The numerical control mechanical transmission mechanism of the slide projector is simple in structure, reasonable in design, long in service life, low in cost, and capable of meeting the requirement for conveniently and quickly projecting high-quality files and videos of users.

The present invention provides a remote automatic intelligent teaching display working method. The method comprises the steps of: S1, sending a working instruction to a slide projector through an intelligent terminal, and starting a projection lamp through the slide projector; S2, after displaying a lantern slide module of completing a many-sided snap ring, picking the many-sided snap ring; and S3, if the temperature, detected by a temperature sensor, at the internal portion of a slide projector cover body is too high, starting a first fan and a second fan for working. The remote automatic intelligent teaching display working method prevents the slide projector from being burnt, and improves the user experience satisfaction.

The present invention relates to a slides projector device for books, comprising: a) an optical unit that includes an array of light sources and a corresponding array of lenses, wherein each lens and its corresponding light source adapted to project a different image located on a corresponding elongated slide located between said arrays of light sources and lenses, wherein said optical unit is adapted to be located on the upper side of a book; and b) an operation unit that includes an array of switches each of which adapted to activate a corresponding light source in said array of light sources, wherein the array of switches is adapted to be located on an upright side of the book that is perpendicular to its upper side and parallel to the hinge side of said book.