- In photometry,
illuminance is the
total luminous flux
incident on a surface, per unit area. It is a
measure of how much the
incident light illuminates...
- The lux (symbol: lx) is the unit of
illuminance, or
luminous flux per unit area, in the
International System of
Units (SI). It is
equal to one
lumen per...
- this area,
illuminance at point r on d A , E v ( r ) = ∑ i | a ^ ⋅ ( r − r i ) | | r − r i | 3 I i . {\displaystyle {\text{
illuminance at
point }}\mathbf...
-
varies logarithmically, it is
helpful to have an
appreciation of both
illuminance and
luminance by
orders of magnitude. To help
compare different orders...
-
square metre with an
illuminance of 1,000 lux. The same 1,000 lumens,
spread out over ten
square metres,
produces a
dimmer illuminance of only 100 lux. In...
- The
Kruithof curve describes a
region of
illuminance levels and
color temperatures that are
often viewed as
comfortable or
pleasing to an observer. The...
- seconds) E is the image-plane
illuminance (lux or lumens/m²) t is the
exposure time ("shutter speed") (seconds) The
illuminance E is
controlled by the f-number...
-
luminous power is
concentrated into a
smaller area,
meaning that the
illuminance is
higher at the image. The
light at the
image plane, however, fills...
-
daylight received in an
internal space can be
analyzed by
measuring illuminance on a grid or
undertaking a
daylight factor calculation.
Computer programs...
-
refracts some
sunlight even when the Sun is
below the horizon.
Outdoor illuminance varies from 120,000 lux for
direct sunlight at noon,
which may cause...
