When the television sets that despite its size makes shaking his head, did not satisfy the medium output from the Home Theater System you buy. Then do not run to the first shaman, because today, Projector as it exists in the cinema has been able to be purchased at an affordable price.
Projector is a system that uses the principle of decoding output waveform generated in the A / V Receiver, to back fired in the light particles to the projector screen.
Projectors History
First idea for a device that could project an image on the surface created by Johannes de Fontana. The idea started there from the year 1420. The picture was first projected is an image of a nun holding something, it is believed the object is a lantern.
Lantern which he held has a transparent window and pictorial demon was holding a spear. Then in 1515 one of the famous painter, Leonardo da Vinci sketched the same. Image that is believed to be the basic idea of the creation of the image projector. The appliance when it is called by the magic lantern.
Based development, in the 17th century "magic lantern" were developed. Initially by creating a pinhole camera and a camera obscura. Both types of cameras are only able to project the real image, an example of the sun, and the image of a surface.
A device called a lantern that can be projected image on the surface of the painting and then marks the point between the camera and projector. Although there have been several stories discovery tool, but the original founders still debatable. Of the many debates, the most widely recognized is Cristian Huygens who developed in the late 1650s.
There is also the inventor of the first trust is a pastor of a German named Athanasius Kircher. He mentioned about the magic lantern in the book that he created called Magna Lucis et Umbrae. In use the tool is said to never show the horrible pictures, for example, is the devil.
The device created by Huygens called the lantern fear could projecting gruesome images, one sighting. At that time, the projector is used by magicians and even witches to make them disappear and reappear, animate inanimate objects, changing from one scene to another, even to make people believe that the dead can come back to life.
With that trick Schroper trying to make people believe that he is an excellent actor. He is so ambitious eventually became crazy and thought he was being chased by demons. Crazy action due to his condition as it was he shot himself. Then he promised to raise himself to the audience.
After the amount of use associated with mythical hoax, the tool begins to experience a change in use. In 1945 the American army used it for training in World War II. Another type is a slide projector that came into common use from the 1950s to the 1970s. A slide projector is used for entertainment for families or people who gathered. They then look at the pictures slide show.
After that, in the early 1960s began to be used in school projectors and business affairs. Projector was named an overhead projector. Overhead projector was used for the identification carried out by the police. The tools used by the police is a roll of plastic amount of about 9 inches that can issue a real face image. Picture slide that developed from the 1950s to the 1970s was replaced with digital images.
Various Kinds Projectors
Video Projector
Video projector is a video projector receives images via a signal. Then project the image as it is on the projection screen using a lens system. For projecting the image, the projector of this type using a very bright light. The most modern tools have inconsistencies, blurriness, and curves that can be set with the manual settings. Video projection is widely used for training in the classroom, concerts, presentations at conferences, and home theater.
Motion Picture Projector
Film projector is used to display movies projected onto a screen. Elements used mostly optical and mechanical elements. Projector of this type have several types, ie 8 mm, super 8, 9.5 mm, 16 mm, 35 mm and 70 mm. Light sources issued by this projector through an incandescent bulb, but in the early 1900s until the 1960s that is used by all the theaters are carbon arc lamps.
Slide Projector
This type of projector is opto-mechanical device used to view photos in slide form. This projector into use in the 1950s for entertainment. If used at home are used to project the image is printed paper, digital cameras, DVD media, and so forth. Slide projector consists of four main elements, as the light source incandescent light bulb, reflector as a tool to direct the light, focus the lens, and slide holder.
Overhead Projectors
Overhead projector consists of a large box containing a lamp whose light is very bright, as well as a fan to cool it. On top of the box there fresnel lens. On top of that box are mirrors and lenses to focus and transmit light to the place or the material for image display. Lenses used to display transparency. Light from the lamp that will ditransparasi toward the mirror. Of the mirror, the rays are shown to the screen to be displayed.
Projectors Opaque (Opaque)
This projector displays opaque material which is irradiated with bright lights from above. Use mirrors to focus the image, imaging lenses, and prisms. Focused image to the screen. The lights were brighter and larger than overhead projectors use this projector because the reflected light to be projected. This projector must be protected from damage due to heat from the light source.
Planetarium Projector
From the name alone you'll already know what the use of this tool. Yes, handy planetarium projector to project images of celestial bodies and displayed in the planetarium dome. Modern planetarium projector was designed by Carl Zeiss Jena in Germany in 1923 -1925. This projector can see the stars, moon, sun, planets, nebulae even.
Magic Lantern (Projector)
Projector "miracle" was developed in the 17th century. This projector has a concave mirror in front of a light source. The point is to gather light and project a picture slide. The light will pass through the hole and out through the lens. The lens can enlarge the original image object from the slide to the screen.
Ceiling projector
This projector is used to measure cloud height from the ground. This projector is projected at 304.8 m atay position of approximately 1000 feet. Projector ceiling set at 90 degrees, but there are also 71 degrees. This projector has a 430 watt bulb that magnitude.
That's a wide range of projectors. Hopefully with this article you can add insight.