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34 Cards in this Set
- Front
- Back
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the deliberate use of lights, whether natural or artificial |
lighting design |
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if adequate amount of light is provided to a space, it can: |
a. Enhance task performance b. Improve appearance c. Induce positive/negative psychological effects |
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by controlling brightness, contrast, glare, and position of lights; |
Enhance Task Performance |
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by create changes in the color rendering of the object |
Improve Appearance |
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depending on the color and intensity of light used |
Induce positive/negative psychological effects |
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Factors that affect illumination |
a. Brightness b. Contrast c. Glare d. Diffuseness |
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defined as the difference in emitted light that is distinguished by an observer |
Brightness |
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the difference between brightness that are seen on a surface or multiple surface |
Contrast |
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defined as excessive brightness of an area of the space compared to the overall brightness |
Glare |
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Types of Glare |
Direct Glare Reflected or Indirect Glare |
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glares from light sources that are visible to the observer |
Direct Glare |
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glares that come from lights that reflect from glossy surfaces |
Reflected or Indirect Glare |
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based on the intensity of the shadow casted by light obstructed by the object |
Diffuseness |
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The amount of light that is provided to the space or surface |
Quality of Lights |
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power emitted by a light source on a particular direction |
Luminous Intensity |
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measure of perceived power of light |
Luminous Flux |
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intensity of light falling at any given surface |
Illuminance |
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S.I of luminous intensity |
candela (cd) |
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S.I of luminous flux |
lumens (lm) |
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S.I of illuminance |
lux (lx) |
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1 lux is equal to |
one lumen per square meter |
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distribute the lights in different methods |
Lighting Patterns or Lighting Distribution |
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the lighting pattern where 90 – 100% of the light output is directed to the object to be lit |
Direct Lighting |
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the lighting pattern where 90 – 100% of the light output is directed to a surface before reflecting to light the object. |
Indirect Lighting |
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is the lighting pattern where 60 – 90% of the light output is directed to the object while the remaining 40 – 10% of the light is directed to a surface before reflecting to light the object. |
Semi-Direct Lighting |
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the lighting pattern where 60 – 90% of the light output is directed a surface before reflecting to light the object while the remaining 40 – 10% of the light output is directed to the object. |
Semi-Indirect Lighting |
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the lighting pattern where the light output is equally distributed to the object and a surface before reflecting to light the object. |
Direct-Indirect Lighting |
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the lighting pattern where the light output is equally distributed to all directions. |
General Diffused Lighting |
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the classification of lighting based on the function or the effect that the designer wishes to achieve |
Layers of Light |
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where the lighting design provides a uniform level or intensity of illumination that allows free movement on a space based on visual recognition. |
General or Ambient Lighting |
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where the lighting design provides high level of illumination on a small area paired with low levels of light surrounding the high-level light. |
Local Lighting |
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a variant of the local lighting that used high level of illumination but are used in areas where specific tasks are carried out in comfort without the risk of straining the eyes. |
Task Lighting |
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where the lighting design is used as a creative lighting that reveals colors, texture, and form by highlighting a specific object or surface. |
Accent Lighting |
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a lighting design that is intended for decoration rather than function. These are used as ornaments since they emit lights poorly. |
Decorative Lighting |
