![]() The lamp and fixture were designed by Entertec (David Cunningham and Greg Esakoff), and the fixture is manufactured by ETC. Leko’s were originally patented in 1933, and are still manufactured today by Strand Lighting (which now owns Century Lighting).Įllipsoidal profile spots are sometimes known as ERS (Ellipsoidal Reflector Spots).Ī Source Four is a type of ellipsoidal profile which uses a specially designed 575W lamp which improves the efficiency of the optics, and has more light output than a standard 1kW lamp. The name Leko is a contraction of the original manufacturer’s names (Joseph Levy and Edward F. Lekos are much more common in the US than the Zoom Profiles we tend to prefer in the UK. This is inserted into the gate of the profile (where the gobo holder would go, so both can’t be used together) and features an adjustable aperture which can cut the beam down to almost nothing.Ī Leko is an ellipsoidal profile spot. The beam size can be reduced even further by the use of an iris diaphragm. Prelude 16/30, Cantata 18/32 are both zoom profiles from Strand Lighting’s range). Profiles with two lenses ( zoom profiles) are best for projecting gobos and other shapes, as the size and sharpness of the beam is fully adjustable throughout the beam angle range of the lantern.Ī zoom profile lantern is known by the range of its beam angle (e.g. Some profiles with only one lens have two sets of shutters, one of which gives a hard edge to the beam, and one which gives a softer edge. You can’t use barndoors on a profile as the shutters do a better job, and the way the optics of the profile work, the barndoors would not work anyway. The shutters are a more flexible (and accurate) version of the barndoors which can be used on Fresnels or PCs. These shapes may be formed by the shutters, or they may be cut out of thin metal (a “ gobo” – see below). Profiles get their name from their ability to project the shape of anything placed in the gate of the lantern between the lamp and the lens. They have a lens (some have two lenses), a lamp and a reflector, and they also have shutters and a gate. Profile lanterns produce clearly defined spots of light (hard-edged or soft-edged) and are the most focussable and versatile of the lanterns. ![]() Safety Note: If your flood has no protective glass or lens, we recommend you use a colour frame with clear gel to provide some protection in case the lamp shatters.įloods on the Backstage Heritage Collection Archive They should only be used for a specific effect or for lighting set. If you use the flood from the side or at an angle to a piece of set, the edge of the light will be visible and there will be sharp lines seen on the set.Īlthough floods were used as the predominant on-stage light source for many years, they are not really suitable for this kind of use in modern theatre because the beam is too wide and produces unwanted light in the wings, masking and all over the set. This works well when you are using the flood directly in front of a wall or cloth, to which it is perpendicular. The shape of the lantern defines the beam shape, and the shadow of the edge of the lantern will be visible at the edge of the beam. Floods are often available in battens (a number of individually-controllable floods in a single box) which can take different gels, so that colour mixing is easier. Floods such as the Coda 4 Batten (4 x 500W linear floods) have four separate cables and units can be daisy-chained together up to the maximum load each dimmer circuit can take. The newer asymmetrical reflector floods (often called Cyc Floods) use linear lamps (to ensure an even cover across the reflector). Older type symmetrical floods use standard ES (Edison Screw) or GES (Giant Edison Screw) filament lamps. Some floods have an asymmetric / directional reflector and are designed to light cycloramas. There is no control over the focussing of a flood, other than its general direction. The reflector concentrates the light towards the opening in the box. This is the simplest type of lantern, consisting of a lamp and a reflector in a box, with no lens. Not suitable for acting areas due to lack of control over beam.There are five main types of generic lanterns in the world of stage lighting: 1) Flood
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