1 / 50

With Lighting and a whole lot of money one can Truly Defy Gravity

With Lighting and a whole lot of money one can Truly Defy Gravity. STAGE LIGHTING INSTRUMENTS. Parts, Maintenance, Safety, and Use. Learning Goals. L earn the exterior and interior parts of a stage lighting instrument.

lisbet
Download Presentation

With Lighting and a whole lot of money one can Truly Defy Gravity

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. With Lighting and a whole lot of moneyone can Truly Defy Gravity

  2. STAGE LIGHTING INSTRUMENTS Parts, Maintenance, Safety, and Use

  3. Learning Goals • Learn the exterior and interior parts of a stage lighting instrument. • Use the instrument as a learning tool: learn the practical and artistic uses of stage lighting. • Use the instrument as a learning tool: learn what trades and fields of study go into the creation and use of stage instruments. • Have a general concept of a) how the instrument works, b) how to maintain the instrument, and c) general safety measures for the instrument.

  4. This presentation is only the beginningof your learning process. Review of the PowerPoint and application in the lab make up the rest of your learning process!

  5. Lighting Lingo • Stage lights are called “instruments.” • The bulbs in instruments are called “lamps.” • Putting an instrument up on the grid is called “hanging.” • A “circuit” is an outlet in the wall. • Plugging in the instrument to a circuit is called “patching.” • Pointing an instrument in the appropriate direction, and adjusting the beam width and shape, are called “focusing.”

  6. Parts of an Instrument To understand the parts of a lighting instrument, we will look at one of the most common examples… … an ETC Source Four ERS 750 (36˚). The “Lekko”

  7. Parts of an Instrument ETC Par Four 750 (36˚) means… ETC = Electronic Theatre Controls ® ERS = Ellipsoidal Reflector Spotlight 750 = Maximum Wattage Rating (750 watts) We use 500 watt bulbs at the Emerson! 36˚ = Field Angle

  8. ETC Source FourEllipsoidal Reflector Spot ERS 750(36˚)

  9. C-Clamp(Pipe Clamp) Lamp Housing Reflector Housing Yoke Instrument Barrel (Lens Tube inside) Shutter Handle Power Cable (Pigtail) Gel Frame Holder Grand Stage Pin (GSP)

  10. Now that you are acquainted with the parts of a stage lighting instrument, let’s see what different trades and fields of study go into its construction.

  11. Physics & Machining Electrical Engineering Physics, Machining, & Industrial Tech Machining & Industrial Tech HVAC Electrics & Energy Tech Visual Art, Color Theory, & Optics Electrical Engineering & Energy Tech

  12. In other words… There’s a lot of “tech” in theatre technology.

  13. Close-up of Stage Pin Edison The Emerson’s as well as your home Most professional theaters!

  14. Close-up of Lamp Housing (Rear View) Secures Lamp Housing Adjusts Angle & Position of Lamp (Bulb) within Housing

  15. Close-up of Barrel and Gel Frame Holder SLIDER HANDLE:Adjusts edges of light “throw” GEL CLIP: Secures Gel Frame and Color Gel BEAM FOCUSKNOB: Adjusts sharpness of light edge GEL FRAME HOLDER: Holds Gel Frame and Color Gel in place

  16. Interior of Lamp Housing

  17. Interior of Lamp Housing

  18. Interior of Lamp Housing Bolt secures lamp housing Lamp Clip Lamp (Bulb) Pigtail

  19. Lamp (Never Touch Glass) • LAMP Specs • Watts: 750 Volts: 77-115 • Amperage: 6.52 • 300 “life hours” (total hours of use • at full intensity) • Lumens: 23,000 • Total length: 4 - 4.170 inches. • Glass Shape: T • Diameter of glass: 0.75 inches • Base: G9.5 Heatsink (two pin) • Filament Type: 4C8 (Tungsten) • Gas around filament: Halogen • Price (2013): about $34 to $45

  20. Reflector Housing(exterior without lamp housing) C-Clamp Twist handle controls yoke position. Yoke

  21. Rear of Instrument(interior without lamp housing) Glass portion of lamp (bulb) fits through here. Since a lamp (bulb) shines in all directions, the reflector redirects the light through the barrel and out the front of the instrument.

  22. Shutter Operation shutters in “pulled” position = = Shape of light on flat surface “shuttered” light = = Shape of light on flat surface

  23. Lens Tubeand Inner Lens(from rear)

  24. Interior of Lens Tube(with Inner and Outer Lenses) Gel Frame Holder Inner Lens FRONT OF BARREL Outer Lens

  25. Instrument Components

  26. Instrument Components

  27. How Light Travels through the ERS Lighting Instrument Yellow lines with arrows = beams of light originating from lamp. Glass portion of LAMP REFLECTOR Wall of lens tube: both sides are black-painted metal (to reduce reflectivity) Wall of lens tube: both sides are black-painted metal (to reduce reflectivity) Large Plano Convex LENS Small Plano Convex LENS

  28. Cleaning Instrument Exterior This is as simple as using canned air or a dry, soft washcloth!

  29. Cleaning Instrument Interior (Metal Parts) This is (also) as simple as using canned air or a dry, soft washcloth!

  30. General Safety Precautions • Follow general electricity precautions (e.g., never touch anything electrical with wet hands). • Heat-resistant gloves are recommended. Even the exterior of an instrument becomes very hot within a few minutes! • NEVER look directly into the lens of the light when less than 5 feet from it. • NEVER look directly at a lamp that is on but not in the lamp housing! • Violation of rules 3 and 4 can cause permanent damage to the retinas of your eyes. • BEFORE you take both hands off the instrument, ALWAYS make sure a) the pipe clamp is fully tightened, and b) the safety cable is attached to both the instrument and the pipe or batten. 7) Always tie your wrench to your belt loop with theatrical tie-line.

  31. The Instrument in Action Example of silhouette (back) lighting. Example of multidirectional, Overhead (top) lighting.

  32. What can Stage Lighting do? PRACTICAL USES • Indicate and separate locations. Hide or reveal people and objects. • Show passage of time, time of day, season, beginning/end of scene or play. • Project shadows. • Create colors and shapes on surfaces. ARTISTIC USES • Establish mood. • Highlight aspects of plot. • Indicate a character’s emotional state. • Establish the “Fourth Wall” (division between the plot’s world and audience’s world).

  33. Mood Lighting Effect: Foreboding Production: Pittsburgh Repertory Theatre’s Nocturnal Wanderer by Gao Xingjian. Director: Paul “Spike” Wilson. Lighting Designer: Peter Fedyshin. Photo by: Heather Garmin

  34. Lighting Effect: Plot Highlight(an abandoned shoe)

  35. Lighting Effects Source 4 + + Gobo Holder Gobo

  36. =

  37. Seasonal Lighting Effect: Winter Photo owned by Real Sound and Vision, Inc. Fair Use applies.

  38. Lighting Lab • See Effects of • Top Light • Front Light • Back Light • Hi Sides Light • Footlight • Specials

  39. The ERF Ellipsoidal Reflector Flood (aka Fresnel)

  40. The Insides The Reflector

  41. The Lens The Ellipsoidal Lens The Fresnel Lens

  42. Eliminates Wasteful Glass

  43. To Fresnel or not to Fresnel Pros Cheap Lightweight Soft Edges Cons Hard To Focus Limited to wash Very Hot Uses Backlight Fill Light

  44. The Parcan

  45. Basically a can with a Spotlight

  46. Cheap Concert Lighting

  47. Other Popular Instruments R40 Strip Lights 3 circuits Scoop The inky Follow spot

  48. Lighting Lab • Hang and circuit an ERS, ERF, and Par can into the grid Compare and Contrast the Instruments

More Related