Lighting Fundamentals Quiz
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Questions and Answers

What describes the density of luminous flux striking a surface?

  • Light loss factor
  • Luminance
  • Lumen output
  • Illuminance (correct)

Which lighting design practice focuses on providing a balance and variety to add interest to the space being illuminated?

  • Illuminance design
  • Ambient lighting design
  • Task lighting design
  • Architectural lighting design (correct)

What is the approximate maximum spacing-to-mounting height ratio referred to as?

  • Light loss factor
  • Luminance ratio
  • Luminaire spacing ratio
  • Spacing criterion (correct)

Which type of lighting is essential for reducing eye fatigue while reading and writing in offices or studies?

<p>Task or local lighting (B)</p> Signup and view all the answers

Which factor contributes to the reduced light output of a lighting installation over time?

<p>Light loss factor (D)</p> Signup and view all the answers

What is one primary purpose of accent lighting?

<p>To highlight ceilings and mantels (C)</p> Signup and view all the answers

Which type of lighting might use low voltage halogen spotlights for its application?

<p>Accent lighting (A)</p> Signup and view all the answers

What is an important consideration for lighting in restrooms and bathrooms?

<p>Ensuring sufficient light to see detail for grooming (D)</p> Signup and view all the answers

Which type of lighting is described as the most essential because it provides the basic background of light for almost every room?

<p>Ambient lighting (D)</p> Signup and view all the answers

Which design practice was historically common for providing all the lighting in a space?

<p>Ambient lighting (A)</p> Signup and view all the answers

Study Notes

Lighting Concepts

  • Luminance is the luminous intensity of a surface in a given direction, per unit of projected area of the surface.
  • Illuminance is the density of luminous flux striking a surface.
  • Lumen output (LM) is generally based on the number of lumens initially output by each lamp.
  • Light loss factor (LLF) is the product of all considered factors that contribute to a lighting installation's reduced light output over a period of time.

Design Principles

  • Architectural lighting design is a blend of science and art, requiring a thorough evaluation of existing installations and the application of scientific principles in creating new designs.
  • The main goals of designing an aesthetically pleasing architectural lighting system are to provide sufficient quantity, quality, and balance of light.

Lighting Types

  • Ambient lighting is the most essential form of lighting, providing the basic background of light for almost every room, and can come from sources such as fluorescent, halogen, and incandescent.
  • Task or local lighting illuminates a specific visual function, making work easier on the eyes, and focuses light in a particular direction or area without casting glare.
  • Accent lighting adds drama and emphasizes a particular object or area, and can be achieved using low voltage halogen spotlights, track lighting, or picture lights.
  • Decorative lighting aesthetically adds interest to the space by blending with other types of lighting to give an overall feel.

Design Considerations for Specific Spaces

Entrances

  • The entrance or foyer is the transitional space from public to private and exterior to interior, and offers the first impression of a home or building.
  • Lighting should draw attention to the building entry.

Offices/Studies

  • Reading and writing require quality lighting that limits eye fatigue caused by glare.
  • This space can take advantage of a beautiful vista out the window and good natural ambient light daylight.

Restrooms/Bathrooms

  • The best light washes the face from all directions, softening shadows.
  • There should be sufficient light to see detail for grooming but not so much to cause glare and discomfort.

Dining Spaces

  • No specific design considerations mentioned.

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Description

Test your knowledge of lighting concepts such as luminance, illuminance, lumen output, and light loss factor. Learn how these principles apply to design and lighting systems.

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