Pair of 3d printed earrings that are a replica of a typical theatrical ellipsoidal reflector spotlight. Ers ellipsoidal reflector spotlight live stage lighting. The precision ellipsoidal reflector has a hole through which a light source can be located at the focal point. What does ers mean ellipsoidal reflector spotlight ers is a type of stage lighting instrument, named for the ellipsoidal reflector used to collect and direct the light through a barrel that contains a lens or lens train. How about a diagram, this time depicting a longitudinal section of an ellipsoidal reflector spotlight, with a few representational paths of its light rays. What you need, when you need it, at a reasonable price. There might even be one in that shaver guys book, on. Theater professionals may refer to it as an ellipse or ellipsoidal. How is ellipsoidal reflector spotlight live stage lighting abbreviated. Spotlightellipsoidal single unit stage lighting for sale ebay. Automated light moving lights generic term for a new type of lighting instrument that can tilt, pan, rotate, change colors, and chage focus. A spotlight in which a lamp and an ellipsoidal reflector are mounted in a fixed relationship, directing a beam of light into an aperture where it may be shaped by a pattern, iris, shutter system, or other insertion.
Shape and shadow with the ellipsoidal reflector spotlight tv. The article on ellipsoidal theatrical spotlights is quite accurate from a usa perspective, however, it has a slight bias towards the etc company, which is justifiable, given their innovations. A lighting unit consisting of a reflector, lamp, single or multiple lens system, and framing device. Floodlights the intelligent lights and spotlights the source fours in use at the. Production advantage lighting fixture ellipsoidal spotlights. A type of adjustable spotlight that uses shutters for control.
Changes in the lighting section reflect current practice and technology. Shine vibrant light in on a stage with spotlight ellipsoidal singleunit stage lighting. Precision grade parabolic reflectors cold type ellipsoidal. When a reflector is placed at the focal point at that end, all rays of the light that strike the reflector will be diverted through the second focal point. Learn how to use the etc source four leko light and take a tour of the source 4 and its amazing lighting features. The flexibility of the ers allows it to fulfill the bulk of lighting roles in the theatre, from broad area lighting to tight specials. Source four is a brand name, and that term is used, too. Book musicals are musicals based on some kind of literary source with a story line that has a clear. First released in 1992, the source four was invented by david cunningham not verified in body and features an improved lamp and reflector compared to previous ers designs, toolfree lamp adjustment, and a rotating, interchangeable shutter. Etc source 4 750w ellipsoidal, black, edison 50 7060a1010a. The venerable 360q is a compact, rugged ellipsoidal reflector spotlight which produces a high intensity sharp or soft edged beam.
An ellipsoidal reflector spotlight or profile spotlight abbreviated to ellipsiodal or ers is a light with a strong, well defined beam, and is very versatile. Designed from the ground up in vectorworks and 3d printed with pla plastic. In stage lighting, an ellipsoidal reflector floodlight sometimes known by the acronym erf which is often pronounced erf, better known as a scoop, is a large, simple lighting fixture with a domelike reflector, large highwattage lamp and no lens. Knight optical supply high quality parabolic and ellipsoidal reflectors made to our, and your, exacting specification. Ellipsoidal reflectors, precision grade and cold type. Introduced in 1933, it was developed by joseph levy and edward kook, founders of century lighting, which eventually became a part of the strand lighting corporation. Published on january 6, 2017 january 6, 2017 68 likes 21 comments. You may also hear longtime stagehands call it a leko, pronounced leekoh. This lighting fixture has become the staple for theatre lighting. Find out information about ellipsoidal reflector spotlight. But one of their old favorites is the ers, short for ellipsoidal reflector. Technical theatrelightinggobos wikibooks, open books for.
Much of the scenery design and technology section has been reworked with an emphasis on modern technology. Ellipsoidal spotlight definition of ellipsoidal spotlight. A gobo derived from go between or goes before optics is a thin piece of metal, wood, or glass used to used to modify the shape of the projected light. The ellipsoidal reflector spotlight, or ers, has been called by various names through the years. A complete rethinking of ellipsoidal technology, source four is the only fixture combining the energysaving power of the hpl lamp with the patented dichroic reflector for the coolest beam on.
So an obvious question is why do we use or did use for a long time the term leko and kliegl as the generic term for an ellipsoidal reflector spotlight. Sometimes referred to as a klieg light, lekolite, or source four. Elliptic definition of elliptic by the free dictionary. Ellipsoidal reflector spotlight the ellipsoidal reflector spotlight combines an ellipsoidal reflector usually with either one step lens or two planoconvex lenses bellytobelly. Vintage lighting the first fresnel think i have one version now. If im not mistaken, theres one in a method of lighting the stage.
Its ellipsoidal lens means only a 500w or 750w bulb is needed, instead of a w bulb, while retaining the same brightness. A history of light and lighting lighting associates, inc. The electronic theatre controls etc source four also known unofficially as source 4 or s4 is an ellipsoidal reflector spotlight ers used in stage lighting. In america, these fixtures are often referred to as lekos, but that is actually the trade name of those erses manufactured originally by century and subsequently. Rather than state that the particular product is the most popular. Jan 06, 2017 so who invented the elipsoidal reflector spot light anyway. These fixtures incorporated the use of ellipsoidal shaped reflectors, which were later developed into the ellipsoidal reflector spotlight. The ellipsoidal reflector is more efficient than either the spherical or parabolic. We have lights, lamps, makeup and scenic materials from over 200 quality manufacturers including rosco, lee, and etc.
The ellipsoidal reflector spotlight combines an ellipsoidal reflector usually with either one step lens or two planoconvex lenses bellytobelly. Ellipsoidal reflector spotlight how is ellipsoidal. Metal plate with a heat resistant handle that is used to insert a pattern into the pattern slot of an ellipsoidal reflector spot framing shutters movable metal plates, in an ellipsoidal reflector spotlight, that shape the light beam synonym. May, 2010 in 1923, a ge engineer named frank benford developed the optics for an ellipsoidal reflector spotlight. It is generally used with ellipsoidal reflector spots, which normally provide a specific slot for gobo use. Ellipsoidal reflector spotlight or profile spot abbreviated to ers, or colloquially ellipsoidal, ellipse, leko or shakespeare is the name for a type of stage lighting instrument, named for the ellipsoidal reflector used to collect and direct the light through a barrel that contains a lens or lens train. The light will be focussed at the second focal point of the ellipsoidal reflector where a target could be located to determine its characteristics. In his early work as a theatrical consultant, mccandless designed specific house lights for the center theatre in new yorks radio city.
Ellipsoidal reflector spotlight follow spotflood lightfresnel. The venerable 360q is a compact, rugged ellipsoidal spotlight which produces a high intensity sharp or softedged beam. Our friendly and knowledgable sales staff is available monday through friday, 8am to 5pm to guide you to the ideal solution for your audio, visual and lighting needs. Ellipsoidal reflector light abbreviated to ers, or colloquially ellipsoidal or ellipse is the name for a type of stage lighting instrument, named for the ellipsoidal reflector used to collect and direct the light through a barrel that contains a lens or lens train. A lekolite often abbreviated to leko is a brand of ellipsoidal reflector spotlight ers used in stage lighting which refers to the half ellipsoidal dome reflector within which the instruments lamp is housed. The proper name is ers ellipsoidal reflector spotlight. Ellipsoidal reflector spotlight article about ellipsoidal. It seems to me the fresnel has always played second fiddle to the ellipsoidal reflector spotlight. Ellipsoidal reflector light abbreviated to ers, or colloquially ellipsoidal or ellipse is. Kliegl for many years, recently donated his collection of books and papers to the lawrence and. By mathematical definition an ellipsoid has two focal points. Ellipsoidal spotlight definition is a spotlight used in theatrical lighting that contains an ellipsoidal reflector and that is particularly designed for long throws and is more efficient than conventional spotlights, reflecting rays that others waste.
Profile spotlights especially in europe because the beam can be shaped to the profile of an object. The title of stage manager was not used until the 18th century, though the concept and need for someone to fill the area of stage management can be seen with the ancient greeks. Ellipsoidal reflector spotlight flashcards quizlet. Varilite ellipsoidal reflector spotlight vlas luminaire 575w stage light attached power cord this item can be used with our varilite power supply. This is a video, in 1950s instructional film style, about how one hangs an ers or source 4 ellipsoidal lighting instrument for the theatre. This rudimentary combination of source, reflector, and convex glass is the precursor to the optical assembly of the 19thcentury limelight, the planoconvex spotlight and from there contemporary stage lights, especially the development of the ubiquitous ellipsoidal reflector spotlight and the fresnel spotlight. So who invented the elipsoidal reflector spot light anyway. Etc source four ellipsoidal 10, 14, 70, or 90 degrees sku.
Ellipsoidal reflector article about ellipsoidal reflector. Spotlights help you illuminate a stage so that the audience can see a band or musician clearly. Ellipsoidal reflector light is the name for a type of stage lighting instrument, named for the ellipsoidal reflector used to collect and direct the light through a barrel. Leko and source four are two of the most common brand names of these lights. It is used to light lecterns, signs and areas that need a tightly focused pool of light.
However, it was not until about 1933 that ge was able to develop a suitable lamp that could withstand the heat inside the ellipsoidal reflector. Lighting designers constantly experiment with new gear to create their art. Also known as an ers ellipsoidal reflector spotlight. Ellipsoidal reflector spotlight ers today, the most widely used light is the ellipsoidal reflector spotlight, or ers for short. By positioning the source light within the ellipse, rays. Source 4 technology provides a clean white beam for unequaled imaging, crisp pattern projection, and a bright, even field. The playwrights were usually responsible for production elements.
Of, relating to, or having the shape of an ellipse. Thereby making the ellipsoidal reflector a cold system. However, it was not until about 1933 that ge was able to develop a suitable lamp that could withstand the heat inside the ers reflector. In 1923, a ge engineer named frank benford developed the optics for an ellipsoidal reflector spotlight. Compact, lightweight ellipsoidal spotlights for theater and studio productions. Technical theatrelightingellipsoidal wikibooks, open. Ellipsoidal reflector spotlight last updated march 30, 2019 a colortran ers. Feb 02, 2011 lighting designers constantly experiment with new gear to create their art. An ellipsoidal reflector spotlight features a builtin reflector in the shape of half an ellipse. It is a fact that the first ellipsoidal reflector spotlights were manufactured and introduced into the field by kliegl bros. The optics of an ers instrument are roughly similar to those of a 35 mm slide projector.
Ers stands for ellipsoidal reflector spotlight live stage lighting. Ellipsoidals consist of an incandescent lamp, an elliptical reflector, and one or two planoconvex lenses. These affordable ellipsoidal lights are made in a variety of shapes and sizes with convenient, adjustable features. Blog so who invented the ellipsoidal reflector spot. Ellipsoidal reflector spotlight the ellipsoidal reflector spotlight or ers is the most abundant and arguably important instrument type currently in theatrical use. Ellipsoidal reflector spotlightancient history controlbooth. Evolution of stage lighting timeline timetoast timelines. Because the luminaire doesnt exhibit enough of the characteristics of an ers, i. Ers is defined as ellipsoidal reflector spotlight live stage lighting somewhat frequently. In america, these fixtures are often referred to as lekos, but that is actually the trade name of those erses manufactured originally by century and subsequently by strand. In america, these fixtures are often referred to as lekos, but that is actually the trade name of those erses manufactured originally by century and subsequently by. Fully compatible with most ers ellipsoidal reflector spotlight fixtures, use this lens tube with etc, chauvet, and other major brand led stage lights. But one of their old favorites is the ers, short for ellipsoidal reflector spotlight. May 24, 2015 this feature is not available right now.
True after a theatrical or film productions costume designer has read through the entire script, she creates a list of characters in each scene, what they wear, and how the characters generally move in each scene. Kirk, working with mccandless, levy, and kook, created a fixture using similar concepts but the kliegls were first to market by several months. Most theater actors learn how to apply basic stage makeup. Presents a survey of the practical and aesthetic aspects of basic lighting design that treats lighting design for the stage as both an art closely integrated with the directors, actors, and playwrights vision, and a craft that provides practical solutions for the manipulation of stage space. Ellipsoidal definition of ellipsoidal by the free dictionary. Ellipsoidal reflector spotlights often called erss, or lekos, after a companys ellipsoidal instrument are among the most complex nonautomated lights found in a theatrical lighting setup. This lightweight luminaire is outfitted with an efficient, specially facetted reflector specifically designed for the new generation of 575 watt tungsten halogen lamps. Ellipsoidal a profile lantern with an elliptical reflector and at least one lens.
Ellipsoidal reflector article about ellipsoidal reflector by the free. Technical theatrelightingellipsoidal wikibooks, open books for. It consists almost entirely of a lamp in the center. Lamp, ellipsoidal reflector, shutteriris assembly, fixed lens. Because of its easy maneuverability and wide range of use, it is the most popular among stage lighting today. The 50 source 4 750 watt black ellipsoidal spotlight with 3 prong edison plug combines the energysaving power of the patented hpl lamp, with a dichroic reflector and opticalquality lenses. Some erses, notably the source four, also include a dichroic reflector, so the beam is much cooler than other lights. A common type was the leko, made by strand, but this has been eclipsed by the source four range, made by etc. Rubin continues, commonly attributed seems due primarily to the fact that lekolight levy and kook caught on as a kind of generic description, while klieglight had a history more linked to bright arc sources and. Ellipsoidal lens tube 36 degree replacement the abs housing and optics ensure this interchangeable ellipsoidal lens tube will reduce truss loads and make adjustments faster and easier. The surface can be coated with similar ones discussed in the parabolic section, namely one for uv, visible, and nir and the other transmitting the nir. The ers, also known as ellipsoidal reflector spotlight, has fewer features and less flexibility than any other conventional fixture on the market.
Ellipsoidal reflector spotlight fine design associates. Rubin continues, commonly attributed seems due primarily to the fact that lekolight levy and kook caught on as a kind of generic description, while klieglight had a history more linked to bright arc sources and kliegeyes. Ellipsoidal reflector spotlight a highly efficient lighting instrument with a reflector shaped like an ellipsoidoften hung in front of house because it has a long throw. The source four is commonly used in stage lighting but it also pops up in. Scene design and stage lighting, eighth edition, continues its tradition of being the most detailed and comprehensive text available in the scenic and lighting design and technology fields. Fixture types 101, part iithe ellipsoidal reflector spotlight i was originally introduced to the world of lighting in high school with legitimate live theater. Vintage lighting the first fresnel think i have one. An ellipsoidal reflector from a leko source four ers. Today, the ellipsoidal reflector spotlight is still one of the basic tools of the stage.
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