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7-18

luminous exposure, DEPRECATED: quantity of illumination, DEPRECATED: light exposure

URNurn:iso:std:iso:80000:-7:ed-2:en:item:7-18

https://metanorma.github.io/isq-smart/quantities/part-7/t7-18
urn:iso:std:iso:80000:-7:ed-2:en:item:7-18

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-7:ed-2:en:item:7-18

IEC

urn:iec:std:iec:80000-7:2019:::item:7-18

Designations

ENluminous exposure

FRexposition lumineuse

ENDEPRECATED: quantity of illumination

FRlumination

ENDEPRECATED: light exposure

FRDÉCONSEILLÉ: quantité d'éclairement

FRDÉCONSEILLÉ: exposition à la lumière

Symbol

H_{v}

(H)

Notation systems

Rendered

H_{v}

Rendered

(H)

AsciiMath

H_"v"

AsciiMath

(H)

LaTeX

H_{\text{v}}

LaTeX

( H )

Definition

density of incident luminous energy with respect to area at a point on a real or imaginary surface, expressed by

H_{v} = \frac{d Q_{v}}{d A}

where $Q_{v}$ is luminous energy (luminous energy) and $A$ is the area on which the luminous energy is incident (ISO 80000-3: Space and time)

dérivée de la quantité de lumière incidente par rapport à l'aire, en un point d'une surface réelle ou fictive, exprimée par

H_{v} = \frac{d Q_{v}}{d A}

où $Q_{v}$ est la quantité de lumière (luminous energy) et $A$ est l'aire (ISO 80000-3: Space and time) de la surface qui reçoit la quantité de lumière

Units

l x \cdot s

lux second

View related quantities →

c d \cdot s r \cdot m^{- 2} \cdot s

candela steradian second per square metre

View related quantities →

Notes

Luminous exposure can be derived from the spectral radiant exposure distribution by

H_{v} = K_{m} \int_{0}^{\infty} H_{e, λ} (λ) V (λ) d λ

where $K_{m}$ is maximum luminous efficacy (maximum luminous efficacy <specified photometric condition>), $H_{e, λ} (λ)$ is the spectral radiant exposure (spectral radiant exposure) at wavelength $λ$ (ISO 80000-3: Space and time), and $V (λ)$ is spectral luminous efficiency (spectral luminous efficiency <specified photometric condition>).

Integral limits can be confined depending on the spectral sensitivity of the detectors used as a sensor.

The corresponding radiometric quantity is "radiant exposure" (radiant exposure). The corresponding quantity for photons is "photon exposure" (photon exposure).

L'exposition lumineuse peut être déduite de la répartition de l'exposition énergétique spectrique par

H_{v} = K_{m} \int_{0}^{\infty} H_{e, λ} (λ) V (λ) d λ

où $K_{m}$ est l'efficacité lumineuse maximale (maximum luminous efficacy <specified photometric condition>), $H_{e, λ} (λ)$ est l'exposition énergétique spectrique (spectral radiant exposure) à la longueur d'onde $λ$ (ISO 80000-3: Space and time) et $V (λ)$ est l'efficacité lumineuse relative spectrale (spectral luminous efficiency <specified photometric condition>).

Les limites de l'intégrale peuvent être resserrées selon la sensibilité spectrale des détecteurs utilisés comme capteur.

La grandeur radiométrique correspondante est l'«exposition énergétique» (radiant exposure). La grandeur photonique correspondante est l'«exposition photonique» (photon exposure).

Referenced by

radiant exposure photon exposure

Concept HierarchyPendrill (2024)

L⁻² T JL⁻² T J quantitiesLevel 0 · Kind

Broader concepts

◇ L⁻² T J quantities

Characterizes

● photon

Ontology
isq:Quantity smart:TermEntry

Class Hierarchy

smart:Entity smart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t7-18

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	7-18
skosxl:prefLabel	"luminous exposure"@en
skosxl:altLabel	"DEPRECATED: quantity of illumination"@en"DEPRECATED: light exposure"@en"H_"v""@en"(H)"@en
skos:definition	density of incident luminous energy with respect to area at a point on a real or imaginary surface, expressed by [stem%…
skos:note	Luminous exposure can be derived from the spectral radiant exposure distribution by [stem%unnumbered] ++++ H_"v" = K_"m…
isq:hasUnit	lxs (lux second)cdsrm^(-2)s (candela steradian second per square metre)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-7

Related Entities

isq:QuantityShape isq:part-7 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry