Entries Tagged 'slide Projectors' ↓

I recently found an old projector in my parents' basement. I only found what is listed below. I have been unable to find out anything about this model.
There is:
Sawyer's 625 Autofocus Projector (Serial no. 00534?)
Wired Remote
Rotary 100 Slide Holders -3-(2 in boxes)
Smith-Victor 150-slide case

I've got an old slide projector probably from the 50's and the bulb exploded. I replaced it but I don't want it to happen again. after running a slide show are you supposed to turn the lamp off but leave the fan on or are you supposed to turn it off all the way? I have an old home movie projector too and don't really want to have that light bulb explode either.

You need to leave the fan running for several minutes after you turn off the lamp.

Don't turn the fan off until the air coming out of the projector is no longer warm.

Carousel Slide Projector

A projector lamp as the word describes projects any input given onto a large screen to serve a huge audience. The input may be of any kind such as audio, video, text, power point presentations, simulations, demonstrations and so on. Depending on the audience and the number of people present the type of projector differs. These can be broadly classified into three types namely overhead projector lamps, slide projector lamps and multimedia projectors.

Slide projector lamps are generally used in places where slide shows are of prime importance and used frequently. this is very useful due to its large capacity to store slide shows. this type of projector contains four major components. They are a fan-cooled light projector bulb, a reflector, a slide holder, condensing and focusing lens. These are the components necessary to perform the basic functions of a slide projector.

As all electronic gadgets a slide projector also requires a source of input which is light. this light source produces a light beam and the heat produced by the beam is then absorbed by a glass. this glass is the connector between the condensing lens and the photo slide to avoid any damage. this light on passing through the lens then enlarges the image in the lamps and projects it on the screen. There are a variety of slide projectors namely carousel slide projectors, single, dual, cube projectors, viewer projectors, and stereo projectors.

Overhead projector lamps are very similar to slide projectors. It consists of a projector lamp and a fan to cool it. There is a mirror and a lens that reflects the light forward fro projecting on the wall. Good quality lamps allow us to adjust the screws to move away or towards the lens to get a better focus. The image will be a brown or blue color coming on the outer edge of the screen. The projector bulb used here is an arc lamp. this increases the effectiveness and the bulb lasts for many hours more than the usual projector bulbs. Older lamps used quartz bulbs which isn’t much effective. The life of quartz bulbs is comparatively less than that of arc bulbs.

A multimedia projector is one which provides multimedia like audio and video onto the screen. this uses a very bright light source and detects curves, blurs and any other inconsistencies in the image. It not only detects but also corrects these inconsistencies. These are used mainly in large power point presentations, classrooms, home events, etc. The cost of multimedia projector lamps is the highest in comparison with other projectors. The cost of these is not dependent only upon the resolution but also its brightness.

The projector lamps can be of different types depending on your requirements. Make sure to select the lamps with quality projector bulb so you may have better results while your presentations!

Article Source: EzineArticles.com

By Jan SchultzThe Imperial Republican this weekend’s showing of “Hop” is not only expected to draw crowds because of its popularity. the April 29-30 and May 1 showings of “Hop,” which had grossed over $100 million as of last weekend, will also be the first movie shown on the new digital equipment at the Imperial Theatre. Installation was underway early this week by CLACO Equipment Services, inc. of Salt Lake City. the crew arrived Saturday and unloaded equipment, moved the old projectors out on Sunday and started on the installation of the new equipment Monday. the old wiring was also removed Sunday. Vince Butler, who was handling the equipment installation with two of the firm’s co-owners, said the changeover was going smoothly. “We’ll definitely be ready by Thursday” to do some final testing, Butler said, before the first show on Friday night. the new digital unit was up in the place of one of the old projectors mid-morning Monday and Butler said they expected to be running some light through it for testing already by midday. the entire Barco digital system is basically a computer network, Butler said. Instead of the 70-pound canisters holding the 35 mm film reels, the movie each week will arrive on a hard drive in a small box. it slides into the projector, and is downloaded onto a standard computer server. once downloaded, the drive is removed and returned to the box to be shipped off after the weekend, just like before but with a lot less weight. Butler said the system has the necessary backups so that if something goes awry with it, the movie will continue without interruption. Imperial’s new system also includes a 10’9” x 20’3” screen, which was also being installed Monday. Working on that aspect was company co-owner Ryan Stauffer, while another co-owner Clayton Stauffer was installing the wiring in the projection room.

Four speakers will deliver the new 5.1 surround sound, as well. Chuck Bartholomew, theatre projectionist, was on hand for much of the work this week. he and others will be trained later in the week. Butler said Bartholomew’s computer experience will be very helpful in operation of the new digital system. Butler said such changeovers from 35 mm film to digital are keeping their installation crew on the road 30 to 40 weeks on average each year. That’s necessary for theatres like Imperial’s, he said, because the goal of the film industry is to do away with 35 mm film by the end of 2013. That was the word at the last film convention Butler attended. and what about value of the two old projectors that are being replaced? “The market right now is so flooded with them,” he said, they aren’t worth much. “The shipping alone on them will be more than what they are worth,” he said. some theatres are setting them up in their lobbies for display, he noted. Others go to museums. “In 10 to 20 years, people are going to ask ‘what was film?’” he said. the $71,558.82 digital changeover at the Imperial Theatre is being done largely with a donation of $52,000 (plus tax) from city sales tax funds. the theatre itself has about $20,000 in its accounts, which will supplement the purchase price, said Jill Moline of the theatre board.