OHPs overhead projectors

Overhead projectors, used in schools, colleges and university classrooms, allow teachers to write ideas down as discussed, which are projected instantly onto a projector screen so that all students can see. OHP's shine light through transparent acetate sheets to display whatever is written or printed on them onto a projector screen. You can also photocopy pages from books onto acetate sheets.

Main advantage of an overhead projector (OHP) over a multimedia projector is cost. Models range from sturdy, budget economy models for prolonged classroom use to stylish, flatbed models for classroom, training and boardroom presentations. Portable flatbed OHP's are available for presentations on the go. Models on the market also include powerful OHPs for large audience lecture theatres. Some models have single lamps, whilst others offer twin lamps, which means that should a bulb go in the middle of a presentation, then with a flip of a switch it transfers to the second lamp and your presentation is uninterrupted. More information on lamps and lenses below.

Overhead projectors - current product range:

	Model	Price	Availability
	Vega Quadra 250X overhead projector 1370036, 2300 Ansi lumens, 2x250W lamps, single element lens	£110 + VAT	2-5 work days
	3M 1608 low budget twin lamp 250W OHP Twin lamp, single lens 250 watt, 2000 lumens, sturdy, budget overhead projector, ideal for classrooms and presentations	£120 + VAT	2-7 work days
	Vega Quadra 250YLS overhead projector 1370036, 2300 Ansi lumens, 2x250W lamps, triple element lens	£125 + VAT	2-5 work days
	3M 1705 economy single lamp 250W OHP Budget single lamp overhead projector with single lens gives all basic features for educational and business needs	£130 + VAT	2-7 work days
	3M 1708 economy twin lamp 250W OHP Budget twin lamp overhead projector is ideal for educational and training needs when working to a tight budget	£135 + VAT	2-7 work days
	3M 1620 low budget twin lamp 250W OHP Twin lamp, single lens 250 watt, 2300 lumens, sturdy OHP with sharp images, ideal for classrooms and presentations	£140 + VAT	2-7 work days
	Vega Focus 250YLS overhead projector 1370038 Foldable arm for easy storage, 2300 ansi brightness, 2x250w lamps, silent cooling system, colour correction	£155 + VAT	2-5 work days
	3M 1720 value twin lamp 250W OHP Value twin lamp overhead projector with triplet lens and 2,500 brightness, ideal for small to medium size meeting rooms	£160 + VAT	2-7 work days
	3M M1805 vision single lamp 250W OHP Vision single lamp, single lens 250W OHP with 5 year RTB warranty, is ideal for educational training rooms	£160 + VAT	2-7 work days
	3M M1808 vision twin lamp 250W OHP Vision twin lamp, single lens 250W OHP with 5 year RTB warranty, is ideal for educational training rooms	£180 + VAT	2-7 work days
	Vega Focus 400GLS overhead projector 1370039 Foldable arm for easy storage, 4500 ansi brightness, 2x400w lamps, silent cooling system, colour correction	£185 + VAT	2-5 work days
	3M M1820 vision twin lamp 250W OHP Vision twin lamp, triplet lens 250W OHP with 5 year RTB warranty, is ideal for educational training rooms	£205 + VAT	2-7 work days
	Kindermann Famulus alpha 250W OHP KM9052, 250W, twin lamp overhead projector with triple element lens, 2500 lumens	£215 + VAT	2-10 work days
	3M M1750 economy twin lamp 400W OHP Value twin lamp overhead projector with triplet lens and 4,500 brightness, ideal for medium to large size meeting rooms	£220 + VAT	2-7 work days
	Anders & Kern EcoLux 400 desktop OHP Desktop 400W EcoLux overhead projector is ideal for classroom use, especially when working to tight budgets	£235 + VAT	2-7 work days
	Vega Sava C2 flatbed portable 250W twin lamp OHP 1370005 Flatbed portable OHP with 250W twin lamps and carry case is ideal for educational and training needs	£240 + VAT	2-5 work days
	3M M1850 vision twin lamp 400W OHP Vision twin lamp, triplet lens 400W OHP with 5 year RTB warranty, is ideal for medium to large conference training rooms	£245 + VAT	2-7 work days
	Vega Sava E2 flatbed portable 250W twin lamp OHP 1370041 Lightweight 5kg, flatbed portable OHP with 250W twin lamps and carry case is ideal for education	£245 + VAT	2-5 work days
	Anders & Kern EcoLux 250 desktop OHP Desktop 250W EcoLux overhead projector is ideal for classroom use, especially when working to tight budgets	£250 + VAT	2-7 work days
	Kindermann Famulus alpha 400W OHP KM9053, 400W, twin lamp overhead projector with triple element lens, 4000 lumens	£250 + VAT	2-10 work days
	3M M2660 portable twin lamp 250W OHP with case Varifocal triple lens, twin lamp, 250W, 2500 lumens, portable OHP with carry case, ideal for mobile presentations	£275 + VAT	2-7 work days
	Kindermann Famulus beta 250 OHP KM9000, 250W vario-focal, triple element lens, quick lamp changer, economy switch, 3000 lumens, 9.5kg	£295 + VAT	2-10 work days
	Kindermann Famulus beta 400 OHP KM9005, 400W, vario-focal, triple element lens, quick lamp changer, economy switch, 5000 lumens, 10.5kg	£315 + VAT	2-10 work days
	Kindermann Famulus reflex T 250 OHP KM6089 Portable OHP, triple element vario focal lens, twin lamp, 3000 lumens, internal transformer power supply, bag	£345 + VAT	2-10 work days
	Anders & Kern Portable 350 OHP Portable 250W overhead projector with folding mechanism and transport case is ideal for mobile presentations	£360 + VAT	2-7 work days
	Anders & Kern TopLux 400 desktop OHP Desktop 400W TopLux 400 overhead projector with lamp quick-change is ideal for classroom use	£385 + VAT	2-7 work days
	Anders & Kern Astrolux SL portable OHP Portable, lightweight 3kg, Astrolux 250W flatbed overhead projector is ideal for mobile presentations	£415 + VAT	2-7 work days
	Kindermann Famulus reflex 250 OHP KM6088, Portable OHP, triple element vario focal lens, twin lamp, 3000 lumens, electronic power supply, bag	£425 + VAT	2-10 work days
	Kindermann Famulus gamma 400 OHP KM6573, Focal compensation switch, auto lamp change, power output socket, 5200 lumens, auditoria use	£465 + VAT	2-10 work days
	Kindermann Famulus beta 400K OHP KM9010, Vario-focal, triple element lens, quick lamp changer, economy switch, 5000 lumens, keystone	£495 + VAT	2-10 work days
	Kindermann Famulus mobil gamma 400 OHP KM6572 Vario focal triple element lens, twin lamp, quick lamp changer, 3500 lumens	£495 + VAT	2-10 work days
	Anders & Kern TransLux 400 portable OHP Portable 400W TransLux 400 overhead projector with folding mechanism and soft carry bag ideal for mobile presentations	£525 + VAT	2-7 work days
	Kindermann Famulus beta 200ML OHP KM9020, 200W long life metal halide lamp, 3000 hours approx, 4000 lumens	£525 + VAT	2-10 work days
	Kindermann Famulus beta 575M OHP KM9025, OHP with long life metal halide 575W lamp, 9500 lumens	£675 + VAT	2-10 work days
	Kindermann Famulus reflex M 250 OHP KM6090 Portable OHP, triple element vario focal lens, metal halide 300W lamp, 4400 lumens, electronic power supply, bag	£755 + VAT	2-10 work days
	Kindermann Famulus gamma 575M OHP KM6575, Focal compensation switch, auto lamp change, 575W metal lamp, power output socket 9500 lumens, 15.3kg	£895 + VAT	2-10 work days
	Anders & Kern TopLux 575E desktop OHP DesktopTopLux 575E overhead projector with lamp quick-change is ideal for classroom use	£975 + VAT	2-7 work days
	Kindermann Famulus mobil gamma 575ME OHP KM6574, Vario focal triple element lens, metal halide 575W lamp, lamp life indicator, 6000 lumens	£1,045 + VAT	2-10 work days
	Kindermann Famulus gamma 575MK OHP KM6590 Focal compensation switch, auto lamp change, 575W metal lamp, 9000 lumens, 300-340mm variofocal keystone	£1,195 + VAT	2-10 work days

OHP accessories
OHP carry cases
OHP lamps
OHP roller attachments

Single and triple lenses

Standard single element lens overhead projectors are fine for writing on acetate sheets or displaying text on screen. High definition overhead projectors have a triple element lens that is designed for displaying fine pictures or engineering diagrams. These are more slightly more expensive than standard overhead projectors.

Single and twin lamp projectors

Overhead projector lamps are inexpensive but only last around 50 hours. When a lamp blows it will need replacing. You need to let the projector cool down before doing this. If the lamp dies during a presentation or teaching session this would be inconvenient and disruptive. Twin lamp overhead projectors have two lamps installed with only one lamp being used at a time. If one lamp dies then a switch is thrown to turn on the second lamp.

Projector brightness

Projector brightness is measured in ANSI lumens. Standard overhead projectors are around 2200 ANSI lumens (250 watt) and are fine for normal classrooms. High brightness projectors are around 4200 ANSI lumens (400 watt) and are used in lecture theatres and other very large rooms.

Flatbed and portable projectors

Flatbed overhead projectors are designed to be portable so that the projector can easily be carried between venues. These are around 5kg to 7kg in weight and fold for easy transport. Some standard projectors just have a foldable arm to allow easier transport.

Page last updated:  Friday 09 May 2008

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