Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
33 results about "Slide projector" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
A slide projector is an opto-mechanical device for showing photographic slides. 35 mm slide projectors, direct descendants of the larger-format magic lantern, first came into widespread use during the 1950s as a form of occasional home entertainment; family members and friends would gather to view slide shows. Reversal film was much in use, and supplied slides snapped during vacations and at family events. Slide projectors were also widely used in educational and other institutional settings.
Double monocular white light three-dimensional measuring systems calibration method
InactiveCN101308012AGuaranteed measurement accuracyGuaranteed measurement reliabilityDiagnostic recording/measuringUsing optical meansSlide projectorThree dimensional measurement
Disclosed is a calibration method for parameters of a double monocular white light three-dimensional measurement system, which belongs to the field of optical measurement and mechanical engineering. The method adopts a plane calibration board as a known calibration object positioned in the measuring range of the system, and obtains the corresponding projection pixel point of a calibration spot in a left camera and the absolute phase value through processing a structured light fringe image on the calibration board projected by a left slide projector and taken by the left camera, and the corresponding projection pixel point of a calibration spot in a right camera and the absolute phase value through processing the structured light fringe image on the calibration board projected by a right slide projector and taken by the right camera. The method goes on linear calibration to a left and a right single measuring head according to the basic data calibrated by the system to obtain as much initial value of parameters of the measurement system as possible and overall nonlinear optimized calibration to the measurement system based on the linear calibration to obtain the optimized value of all the parameters of the measurement system, thereby realizing the precise calibration of parameters of the double monocular white light three-dimensional measurement system.
Owner:三的部落(上海)科技股份有限公司
Furniture construction
InactiveUS6247770B1Quick and easy and secureEasy to useFurniture partsKitchen equipmentSlide projectorOverhead projector
Specially designed articles of furniture for use in conference and office settings which include a plurality of uniquely configured supporting legs, one or more article support structures disposed centrally of the supporting legs and a novel connector member for interconnecting the support structures of the legs. The connector member also enables the quick and easy interconnection of the polygonal panels that make up certain of the article support structures of the apparatus. The articles of furniture can be used to support and transport a wide variety of devices such as audio and video equipment, slide projectors, overhead projectors and the like.
Owner:VIRCO MFG
Slide projector showing system capable of wirelessly transmitting plotting information
A slide projector showing system capable of wirelessly transmitting plotting information is characterized in that a control terminal is a movable panel computer which comprises a touch screen and a touch pen and is loaded with a control terminal program; a showing terminal is a display or a projector connected with a host computer and a projection screen matched with the projector; the movable panel computer has a built-in or external Bluetooth; and the host computer has a built-in or external Bluetooth. The control terminal program is in real-time response to plotting or marking of a speaker on the showing interface; and the plotting information can be wirelessly transmitted to the showing interface of a showing computer through the Bluetooth, and the identical plotting pattern can be synchronously displayed on the showing interface. Therefore, the showing screen has the function of an electronic whiteboard and can be operated movably in the field.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Cube shaped lamp and projection device for single slide or digital projection
InactiveUS20070146649A1Brighter illuminationCheaply projectSlide projectorsSlide projectorDigital imaging
A lamp and projection device for a single slide or digital imaging means comprising six substantially identical faces assembled to form a cube body which supports an illumination system consisting of a light-emitting unit, a electrical transformer unit and switches, a plurality of reflecting mirrors and at least one condensing lens, and a slide or digital light engine. Said overall cube body having a hinged face at the top supporting a reflecting mirror on the inside surface which can be positioned at any angle to allow projecting an image onto a ceiling or onto an adjacent surface, with a micro-switch acting to switch on the device when opened. Said lens being adjustable by means of an external button to enable focusing. The overall faces being formed from a semi-translucent material to enable soft illumination. Said overall device being implemented as a single slide projector / decorative lamp, digital photo projector or video projector.
Owner:DANIEL SIMON +1
Vibration control device and method for flexible hinged plates based on binocular vision measurement
ActiveCN107153382AEnabling completely contactless measurementsAccurate measurementProgramme controlComputer controlSlide projectorVibration control
The invention discloses a vibration control device and method for flexible hinged plates based on binocular vision measurement. The device comprises a flexible hinged plate body, a vibration detection part, a drive control part, a signal processing module and a computer, wherein the flexible hinged plate body is composed of two flexible plates made of same material through a hinge together; the vibration detection part comprises a plurality of acceleration sensors, two industrial cameras and a slide projector; the drive control part comprises a plurality of piezoelectric plate drivers; the vibration detection part is used for detecting the vibration signal of the flexible hinged plate body, the vibration signal is input into the computer through the signal processing module, the computer is used for operating a corresponding active control algorithm, and the vibration signal is output to the drive control part through the signal processing module so as to restrict the vibration of the flexible hinged plate body. According to the vibration control device, complete non-contact measurement for hinged plate vibration is realized by adopting a method in combination with slide projector projection mark points and camera detection, so that the measuring result is more accurate.
Owner:SOUTH CHINA UNIV OF TECH
A projector that can instantly share the image of the slideshow being played
A projector capable of instantly sharing the images of the displayed slides, in addition to having the components and functions of a general projector, a signal processing device (101) and a network device (102) are also provided, and the signal processing device (101) converts input The video signal is converted into a video data stream, and the video data stream is provided to each network terminal (4) for extraction in a real-time manner through a network device (102). In some large-scale conferences, due to the large conference venue and the large number of people, not every position can clearly see the projector screen (2). With the projector (1) of the present invention, the conference participants can connect to the Internet as long as they carry them. The network terminal (4), such as a notebook computer, can extract the video data stream from the projector (1) through its notebook computer, instantly see the same image content as the screen (2), or download the lecturer's slideshow file , and the video data stream can be stored in the computer for easy viewing in the future.
Owner:黄金富
Intelligentized power construction secondary connection drawing viewing device
InactiveCN108741750ARealize sealed storageEasy to viewBook cabinetsNon-mechanical controlsSlide projectorSoft magnet
Provided is an intelligentized power construction secondary connection drawing viewing device. The intelligentized power construction secondary connection drawing viewing device comprises a cabinet body system, a drawing storage system and a projection system; the cabinet body system comprises a main cabinet body, a closed door and a door body blocking mechanism; the door body blocking mechanism is arranged on a door body blocking mounting plate, and comprises a blocking box, a blocking soft magnet, a blocking reset spring and a blocking column; the main cabinet body is internally provided with multiple bearing plates distributed vertically at intervals, and the bearing plates divide an inner cavity of the main cabinet body into case unit space, drawing storage unit space and projection unit space; the drawing storage system comprises a drawing box, the lower ends of both sides of the drawing box are provided with storage moving guide rails, and the storage moving guide rails can be slidably arranged in a storage moving sliding groove from inside to outside; and the projection system comprises a slide projector, a projection lifting mechanism and a projection direction adjusting mechanism. The intelligentized power construction secondary connection drawing viewing device has the advantages that the sealing and storage of drawings can be achieved, and the drawings are viewed conveniently.
Owner:ZHANGQIU POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1
Portable slide projector
InactiveUS20020089650A1Easy to transportIlluminatePicture changing apparatusPrintersMicroscope slideSlide projector
A portable slide projector is provided for the portable projection of standard film slides. The projector has a housing of an overall size, shape and function of a flashlight. A rechargeable battery pack provides power to a lamp as controlled through a switch. A standard film slide of the common variety, is inserted into one of a series of aligned projection slots. The projection slots are supported by a linear carousel mechanism advances the aligned film slides into position to be projected.
Owner:STEWART BARRY WENDALL
Multi-flexible plate vibration detection device and method
ActiveCN108760025ANo additional mass added to the structureChange structural propertiesSubsonic/sonic/ultrasonic wave measurementUsing wave/particle radiation meansSlide projectorMultiple sensor
The present invention discloses a multi-flexible plate vibration detection device and method. The device comprises 2N+1 flexible plates, a linear travel mechanism, a vibration detection mechanism anda control module, one of the flexible plates is located at the central position, the other flexible plates are symmetrically arranged at two sides of the one of the flexible plates, the flexible plates are perpendicular to a horizontal plane and hinged together through a hinge to form a flexible hinge plate, and the flexible hinge plate is arranged on the linear travel mechanism; the vibration detection mechanism comprises two slide projectors, two sets of binocular vision systems and 2N acceleration sensors, each slide projector is configured to project mark points on the flexible hinge plate, each set of the binocular vision systems is configured to detect the mark point area of the corresponding slide projector on the flexible hinge plate, and each acceleration sensor is arranged on thecorresponding flexible plate. The multi-flexible plate vibration detection device and method can reflect the global features of the flexible hinge plate and provide a condition for the active vibration control based on the multiple sensors.
Owner:SOUTH CHINA UNIV OF TECH
High-definition four-dimensional (4D) raster picture
InactiveCN102243377AImprove aggregation effectFacilitate high-precision outputAdvertisingDisplay meansStereoscopic videoSlide projector
The invention discloses the structure and design method of a high-definition 4D raster picture, wherein a novel picture showing device can be provided by combining rectangular gridding, laser typesetting and outputting, colour board developing and orthogonal grating technologies. Clear, lucid, large-size, and non-dazzling stereoscopic slide projector images and stereoscopic video images can be represented by the movement or relative movement of a horizontal raster. The stereoscopic images or stereoscopic advertisements showed by the stereoscopic slide projector have great stereoscopic sense, definition and viewing comfort; the stereoscopic video can show several hundreds of continuously moving stereoscopic images with contents and plots.
Owner:BEIJING KANGDEXIN 3D TECH
Slide projector with multiple projection sections
The invention relates to an improved slide projector with multiple projection sections, which includes at least two lighting sources controlled by an IC therein. The projector has a head with multiple projection sections on its lens and a slot for receiving a slide, which is provided with multiple drawings relating to a lighting source. The slide projector can provide an action projection shows when the lighting sources are lightened in series that obtains a utilized effect.
Owner:WANG WAN CHU
Film picture process cinematography method and its equipment
The present invention relates to a film picture synthe synthesis shooting method and its equipment. Said method is as follows: making the classifical picture of running film into filmslide, using slide projector to project said filmslide onto the screen connected with ground where the people can stand up, so that when the audience watches his-self enjoyed picture, he can stand on said screen connected with ground, a synthetic photograph of "he-seft appears in the film picture" can be shot by camera. Said equipment includes film picture filmslide, screen connected with ground, slide projector,projection less, half-transmitting half-reflecting lens, camera and illumination light.
Owner:梁坚平
Slides projector book device
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.
Owner:SIMHI DORON
Luminous unit for discharge lamp
InactiveCN1393905APrecise positioningSuitable for actual mass production structureHigh-pressure discharge lampsSolid cathode detailsIndustrial areaSlide projector
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.
Owner:杨炳霖
Method for implementing effect of animation or move by vehicle running in tunnel
A method for obtaining the effect of animation or movie by the tunnel in which car is running features that the pictures or slide projectors are fixed to the side wall of said tunnel at the intervalsthat the passenger can watch 24-40 pictures per second and the passenger on the car can enjoy the animation or movie from said side wall of tunnel or the window curtain of car.
Owner:卢革平
Stage filmstrip machine
ActiveCN100472124CImprove ergonomicsAvoid time differenceLighting applicationsProjectorsSlide projectorHuman–machine interface
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.
Owner:BEIJING XINGGUANG FILM & TV EQUIP TECH CO LTD
Hand-held illuminating lamp with laser slide projector
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.
Owner:义乌硕能电子科技有限公司
Numerical control mechanical motion system
The invention discloses a numerically controlled mechanical motion system, comprising a film changing mechanism, a focusing mechanism, a transmission mechanism, and a transmission wheel; the focusing mechanism is arranged on the base of the numerically controlled mechanical transmission mechanism of the slide projector; The transmission block that pushes the mechanism to drive and contact; the focusing mechanism is installed on the upper part of the worm; the motor and the transmission wheel are coaxial; the disc changing mechanism and the friction wheel are connected through a drive shaft; A mounting groove is provided on the mechanism; the piston rod is arranged inside the focusing mechanism; a dust-proof ring is arranged on the right side of the transmission wheel and the lens barrel. The invention has the advantages of simple structure, reasonable design, long service life and low cost, and can satisfy users to display high-quality documents and videos conveniently and quickly.
Owner:艾博特镭射科技徐州有限公司
Convenient multimedia interactive teaching device
InactiveCN109345881AOvercoming Angle ProblemsReduce volumeProjectorsElectrical appliancesInterference fitSlide projector
The invention discloses a convenient multimedia interactive teaching device. The device is characterized by comprising USB slots, USB apple plugs, foot pins, a heat radiation device, a data line, a projector, a dust cover, a connector, an adjustment slot, a power switch and an Apple mobile phone, wherein the USB slots are three in total, are respectively mounted at a right end of the heat radiation device and are electrically connected with the projector, the USB apple plugs are horizontally embedded in and are mutually buckled with the USB slots, the foot pins are four in total, are horizontally attached to a bottom end of the projector and are welded together with the bottom end of the projector, the heat radiation device is horizontally mounted at a right end of the projector, and interference fit is employed. The device is advantaged in that the small volume, light weight and strong mobility are realized, the device is portable, the weight of the device is similar to a light notebook computer, the device is a substitute for traditional slide projectors and large and medium-sized projectors, a problem of a lecture angle of a teacher is overcome, and efficiency of the class is greatly improved.
Owner:广州果道信息科技有限公司
A kind of numerical control mechanical transmission mechanism of slide projector
ActiveCN104460216BSimple structureReasonable designPicture changing apparatusSlide projectorNumerical control
Owner:WANDONG FENGYUAN MACHINERY
Slide projector housing with mount for detachable lens and strobe
ActiveUS9341927B1Easy to installOvercome disadvantagesSlide projectorsPhotographyMicroscope slideCamera lens
This invention provides a system and method for projection of an image on any surface, employing a lightweight (typically polymer) housing that removably encloses a slide holder allowing for quick change of the slide. The housing includes a central channel, and allows for the mounting of a conventional camera-mounting-base lens at a front end and the insertion of a standard form factor photographic strobe / flash in the rear end. Light from the strobe passes down the channel, through the slide and is projected by the lens onto the surface. This housing is mountable on a standard tripod. The housing is straightforward to use, with the strobe effect being provided directly by the strobe unit. The system and method avoids the need of a camera body and desirably enables the user to employ one or more lenses, which are often less expensive and already available in a photographer's equipment inventory.
Owner:SPIFFY VENTURES LTD
Novel numerical control mechanical transmission mechanism of slide projector
ActiveCN104460216ASimple structureReasonable designPicture changing apparatusSlide projectorNumerical control
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.
Owner:WANDONG FENGYUAN MACHINERY
An energy-saving slide projector that generates electricity by itself
The invention discloses an energy-saving slide projector capable of generating power by itself. The energy-saving slide projector comprises a projector body, a projector used for projection is fixedlyinstalled on a heat conduction plate, second fan blades rotate to reduce the environment temperature, a second fan blade shaft rotates to drive the rotation of a third gear, the projector is in contact with the heat conduction plate while protection is performed to collect heat and transmit the heat into a generator for power generation so as to achieve recovery of electric energy, fan blades aredriven by transmission parts such as helical gears and gears to rotate for heat dissipation, a motor on a rotating shaft can be supplied with power by the generator in the projector body to achieve secondary utilization of electric energy while the projector body is subjected to heat dissipation to prevent the temperature of the projector body from too-high temperature and short circuit and achieve electric cycle; and moreover, due to the fact that the temperature of the environment is increased while heat dissipation is conducted, a user feels poor, and mist spray and an electric fan are designed to reduce the temperature in the environment.
Owner:浙江金果知识产权有限公司
Swing slide projector light
ActiveCN105698063BExpand the floating rangeLight fasteningsSemiconductor devices for light sourcesSlide projectorGear drive
The invention discloses a swinging slide projection lamp which mainly adopts the structure that a light-transmitting lampshade is arranged at the front end of a lamp housing; a power supply unit and a swinging projection mechanism are arranged in the lamp housing; after light emitted from an LED lighting device of the swinging projection mechanism passes through a collecting lens plate, a slide and a convex lens plate, a patterned light shadow is projected by the light-transmitting lampshade; and furthermore, a motor drives the convex lens plate to rotate, so that convex lenses of the convex lens plate rotate to change positions relative to pattern units of the slide, and then the projected patterned light shadow has a rotating and changing light effect. Meanwhile, the motor further drives a transmission gear, the transmission gear drives an eccentric guide gear to rotate, and an eccentric column of the eccentric guide gear performs linear reciprocating motion in the lamp housing, so that the whole swinging projection mechanism can be guided to swing from one side to another, the projected rotating and changing patterned light shadow can further have a side-to-side swinging dynamic changing effect, and the floating range of the project patterned light shadow can be enlarged.
Owner:ZAIXING ELECTRONICS SHENZHEN
Remote fully automatic intelligent teaching demonstration working method
ActiveCN108320588BRealize continuous playbackNo risk of switching failureProjectorsElectrical appliancesSlide projectorSoftware engineering
Owner:SHANDONG POLYTECHNIC COLLEGE
Remote automatic intelligent teaching display working method
ActiveCN108320588ARealize continuous playbackNo risk of switching failureProjectorsElectrical appliancesSlide projectorMultimedia
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.
Owner:SHANDONG POLYTECHNIC COLLEGE
Slides projector book device
Owner:SIMHI DORON
Double monocular white light three-dimensional measuring systems calibration method
InactiveCN101308012BGuaranteed measurement accuracyGuaranteed measurement reliabilityDiagnostic recording/measuringSensorsSlide projectorThree dimensional measurement
Disclosed is a calibration method for parameters of a double monocular white light three-dimensional measurement system, which belongs to the field of optical measurement and mechanical engineering. The method adopts a plane calibration board as a known calibration object positioned in the measuring range of the system, and obtains the corresponding projection pixel point of a calibration spot ina left camera and the absolute phase value through processing a structured light fringe image on the calibration board projected by a left slide projector and taken by the left camera, and the corresponding projection pixel point of a calibration spot in a right camera and the absolute phase value through processing the structured light fringe image on the calibration board projected by a right slide projector and taken by the right camera. The method goes on linear calibration to a left and a right single measuring head according to the basic data calibrated by the system to obtain as much initial value of parameters of the measurement system as possible and overall nonlinear optimized calibration to the measurement system based on the linear calibration to obtain the optimized value of all the parameters of the measurement system, thereby realizing the precise calibration of parameters of the double monocular white light three-dimensional measurement system.
Owner:三的部落(上海)科技股份有限公司
Multifunctional intelligent table lamp
PendingCN114383074ASave desktop areaReduce overdependenceLighting elementsProjectorsSlide projectorProtecting eye
The invention relates to the field of table lamps, and discloses a multifunctional intelligent table lamp which comprises a lamp assembly and a slide projector assembly, the lamp assembly comprises a base, a supporting rod located in the vertical direction is fixedly connected to the top end of the base, a lamp shell is arranged on one side of the supporting rod, and a lighting lamp set is installed in the lamp shell; a cantilever mechanism used for adjusting the height of the lamp shell is arranged between the lamp shell and the supporting rod, and an illumination adjusting key is installed on the base. The slide projection assembly comprises an LCD screen and a slide lens, the LCD screen is installed in the lamp shell and located above the illuminating lamp set, the slide lens is installed at the bottom end of the lamp shell, a slide light source installed in the lamp shell is arranged above the LCD screen, and a slide adjusting key is installed on the base. The problems such as illumination, slide show, projection and the like which can be solved by many devices are solved only through one table lamp, additional devices are not needed, the desktop area of a user is saved, meanwhile, dependence of the user on an electronic screen can be reduced, and health and eye protection are achieved.
Owner:BEIJING YUEME TECH CO LTD
A slide projector
InactiveCN103645599AOvercome limitationsPicture changing apparatusElectrical appliancesSlide projectorEngineering
The invention discloses a slide projector comprising an enclosed cavity. The enclosed cavity is provided with an imaging aperture. A intense light source and a fan are arranged inside the enclosed cavity. The slide projector is characterized in that: A reflecting mirror (4) is arranged between an inner wall of a side, close to the imaging aperture (5), of the enclosed cavity (1) and the intense light source (3). The inner wall of the other side of the enclosed cavity (1) is provided with a material rack (8). Materials (2) are movably installed on the material rack (8). According to the invention, any printing material such photos, newspapers, pictures and manuscripts can be used as the materials. Through regarding optical principles as bases, problems of limitations and high costs of old-fashioned slide projectors are overcome. The slide projector of the invention overcomes limitations of films of the old-fashioned slide projectors, and is a convenient, practical, and reliable demonstration tool.
Owner:简玉君
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com