F: Types of Fixtures or Luminaires

Question 1

direct, semi-direct, general diffuse, directindirect, semi-indirect, indirect

Answer 1

As to the light distribution

Question 2

surface-mounted, pendant lights, recessed (full or semirecessed).

Answer 2

As to mounting

Question 3

a luminaire from which the light is directed downward
with direct distribution pattern. It can be recessed, surfacemounted or pendant, can use any lighting technology and can have
different patterns of light distribution like wide, cone or narrow cone
of light.

Answer 3

Downlight

Question 4

A luminaire that can be considered a variation of a downlight that uses a
directional lamp (R, PAR, MR, AR, LED) or a lamp set with an adjustable
reflector (MH or CMH) on a pivoting arm.

Answer 4

RECESSED ADJUSTABLE OR ACCENT

Question 5

A special form of downlight with fixed angle and direction
(usually not directly downward).

Answer 5

WALL WASHER

Question 6

general rule on the spacing of
wall washers from each other and from the wall.

Answer 6

1/3 of the ceiling height

Question 7

A specialty downlight similar to a washer but with different purpose. Lights are placed nearer to the wall (almost vertically orientated) to emphasize the features and textures of the wall. It can also be used to emphasize polished surfaces because the small distance from the wall minimizes reflections of the lamp.

Answer 7

WALL GRAZER

Question 8

typical maximum distance from the
wall.

Answer 8

12 inches (300mm) maximum

Question 9

Track luminaries or fixtures basically describe more
the installment or composition of the lamp (track and
track heads). A track is typically a straight metal
channel with internal wiring usually 2’, 4’ or 8’ in
length. These tracks can have different configurations
and installment method - recessed, surface mounted or
pendant.

Answer 9

Track Lighting System

Question 10

A technique in which a luminaire is set on a shelf,
ledge or horizontal alcove below the ceiling, Light
from the luminaire is reflected off the ceiling and into
the space below.

Answer 10

COVE LIGHTING

Question 11

Lip to Ceiling Opening

Answer 11

12” or 1 foot minimum

Question 12

Center of Lamp to Wall

Answer 12

5” minimum

Question 13

Center of Lamp to Lip

Answer 13

2” minimum

Question 14

dual lensed luminaires for
careful beam shaping and

Answer 14

Ellipsoidal Reflector Spotlight

Question 15

compartmented or multi-circuited unit for a linear
wash of light (as linear wall
washer light).

Answer 15

Striplight

Question 16

There are different accessories that can be added to lamps for
control and improvement
of the light they produce.

Answer 16

LUMINAIRE ACCESSORIES