CIE standard illuminant D75
E548580
CIE standard illuminant D75 is a defined daylight illuminant with a correlated color temperature of about 7500 K, representing cool, overcast daylight conditions for colorimetry and imaging applications.
All labels observed (1)
| Label | Occurrences |
|---|---|
| CIE standard illuminant D75 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5767955 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: CIE standard illuminant D75 Context triple: [CIE standard illuminant D65, hasRelatedIlluminant, CIE standard illuminant D75]
-
A.
CIE standard illuminant D65
CIE standard illuminant D65 is a standardized representation of average daylight with a correlated color temperature of about 6500 K, widely used as a reference white point in colorimetry and imaging systems.
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B.
CIE standard illuminant D50
CIE standard illuminant D50 is a standardized light source representing average midday daylight with a correlated color temperature of about 5000 K, commonly used as a reference for color-critical applications such as printing and graphic arts.
-
C.
CIE 1931 XYZ
CIE 1931 XYZ is a foundational color space defined by the CIE that models human color perception using three tristimulus values (X, Y, Z) and underpins much of modern color science and colorimetry.
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D.
Licht
Licht is Karlheinz Stockhausen’s monumental seven-opera cycle, each part associated with a day of the week and combining music, theater, and spirituality into one of the most ambitious works of 20th-century avant-garde music.
-
E.
International Commission on Illumination
The International Commission on Illumination (CIE) is the global authority on light, illumination, color, and color spaces, responsible for developing internationally recognized standards and recommendations in these fields.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: CIE standard illuminant D75 Target entity description: CIE standard illuminant D75 is a defined daylight illuminant with a correlated color temperature of about 7500 K, representing cool, overcast daylight conditions for colorimetry and imaging applications.
-
A.
CIE standard illuminant D65
CIE standard illuminant D65 is a standardized representation of average daylight with a correlated color temperature of about 6500 K, widely used as a reference white point in colorimetry and imaging systems.
-
B.
CIE standard illuminant D50
CIE standard illuminant D50 is a standardized light source representing average midday daylight with a correlated color temperature of about 5000 K, commonly used as a reference for color-critical applications such as printing and graphic arts.
-
C.
CIE 1931 XYZ
CIE 1931 XYZ is a foundational color space defined by the CIE that models human color perception using three tristimulus values (X, Y, Z) and underpins much of modern color science and colorimetry.
-
D.
Licht
Licht is Karlheinz Stockhausen’s monumental seven-opera cycle, each part associated with a day of the week and combining music, theater, and spirituality into one of the most ambitious works of 20th-century avant-garde music.
-
E.
International Commission on Illumination
The International Commission on Illumination (CIE) is the global authority on light, illumination, color, and color spaces, responsible for developing internationally recognized standards and recommendations in these fields.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
CIE standard illuminant
ⓘ
daylight illuminant ⓘ |
| abbreviation | D75 ⓘ |
| applicationDomain |
color quality evaluation
ⓘ
color reproduction ⓘ device characterization ⓘ |
| belongsToSeries | CIE daylight illuminant series D NERFINISHED ⓘ |
| colorAppearance | cool white ⓘ |
| comparedWith | CIE standard illuminant D65 NERFINISHED ⓘ |
| correlatedColorTemperature | 7500 K ⓘ |
| correlatedColorTemperatureApproximate | about 7500 K ⓘ |
| definedBy | International Commission on Illumination NERFINISHED ⓘ |
| definedIn | CIE daylight illuminant model NERFINISHED ⓘ |
| hasCategory | standard daylight illuminant ⓘ |
| hasHigherCCTThan | CIE standard illuminant D65 NERFINISHED ⓘ |
| hasNominalCCT | 7500 K ⓘ |
| hasSpectralPowerDistribution | CIE D75 spectral power distribution ⓘ |
| intendedToModel |
cool overcast daylight
ⓘ
northern sky daylight ⓘ |
| isCoolerThan | CIE standard illuminant D65 ⓘ |
| referenceIlluminantFor | daylight viewing conditions ⓘ |
| represents |
cool daylight
ⓘ
overcast daylight conditions ⓘ |
| standardizedBy | CIE NERFINISHED ⓘ |
| type | theoretical illuminant ⓘ |
| usedAsReferenceWhite | yes ⓘ |
| usedFor |
instrumental color measurements under standardized daylight
ⓘ
visual assessment of color under cool daylight ⓘ |
| usedIn |
colorimetry
ⓘ
imaging applications ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: CIE standard illuminant D75 Description of subject: CIE standard illuminant D75 is a defined daylight illuminant with a correlated color temperature of about 7500 K, representing cool, overcast daylight conditions for colorimetry and imaging applications.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.