DE964728C - Measuring device for determining the color temperature of light sources with a discontinuous spectrum - Google Patents

Measuring device for determining the color temperature of light sources with a discontinuous spectrum

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Publication number
DE964728C
DE964728C DEST3195A DEST003195A DE964728C DE 964728 C DE964728 C DE 964728C DE ST3195 A DEST3195 A DE ST3195A DE ST003195 A DEST003195 A DE ST003195A DE 964728 C DE964728 C DE 964728C
Authority
DE
Germany
Prior art keywords
light sources
green
red
quotient
blue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEST3195A
Other languages
German (de)
Inventor
Dipl-Ing Alois Lennartz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BERNHARD DELTSCHAFT FA
Original Assignee
BERNHARD DELTSCHAFT FA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BERNHARD DELTSCHAFT FA filed Critical BERNHARD DELTSCHAFT FA
Priority to DEST3195A priority Critical patent/DE964728C/en
Application granted granted Critical
Publication of DE964728C publication Critical patent/DE964728C/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/60—Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Radiation Pyrometers (AREA)

Description

Meßgerät zur Bestimmung der Farbtemperatur von Lichtquellen mit nicht kontinuierlichem Spektrum Zusatz zurn Patent 953 746 In dem Patent 953 746 ist eine Anordnung zur Messung der Farbtemperatur von Lichtquellen mit konstantem Spektrum beseh.rieben. Es kommt jedoch auch vor, daß man Lichtquellen untersuchen will, bei denen des Spektrum beliebig beschaffen ist.Measuring device for determining the color temperature of light sources with not continuous spectrum addition to patent 953 746 In the '953,746 patent there is one Arrangement for measuring the color temperature of light sources with a constant spectrum treated. However, it also happens that one wants to investigate light sources at those of the spectrum is arbitrary.

Während beim kontinuierlichen Spektrum die Farbe durch das Verhältnis der Amplituden zweier Spektralwerte, in vorliegendem Fall rot und blau, vollkommen ausreichend definiert ist, sind zur Bestimmung des Farbwerte einer Lichtquelle mit nicht kontinuierlichem Spektrum zwei Quotientenbildungen erforderlich. Dies geschieht in bekannter Weise durch die zusätzliche Bildung des Quotienten Grünrot, so daß also durch die zwei Quotienten Blaurot und Grünrot die Lichtfarbe bzw. Farbe eindeutig definiert wird. Praktisch geschieht die Bildung des zweiten Quotienten durch die Anbringung eines zusätzlichen grünselektiven Photoelements. While in the case of the continuous spectrum, the color is determined by the ratio of the amplitudes of two spectral values, in the present case red and blue, completely is sufficiently defined, are used to determine the color values of a light source not continuous spectrum two quotient formations required. this happens in a known manner by the additional formation of the green-red quotient, so that thus the light color or color unambiguously through the two quotients blue-red and green-red is defined. In practice, the second quotient is formed by the Attachment of an additional green selective photo element.

Der Erfindung liegt der Gedanke zugrunde, daß der zweite Quotient aus dem ersten Quotienten abgeleitet werden kann. Hieraus ergibt sich der sofort erkennbare Vorteil der Einsparung des grünselektiven Photoelements. Die Ableitung des zweiteil Quotienten aus dem ersten Quotienten geschieht nach der vorliegenden Erfindung in der Weise, daß bei der Rotblanmessung eine dünne Gelbscheibe vor dem leeren dritten Sektor liegt. Mit einem kleinen The invention is based on the idea that the second quotient can be derived from the first quotient. This follows immediately recognizable advantage of saving the green-selective photo element. The derivation the two-part quotient from the first quotient happens according to the present one Invention in such a way that in the rotblan measurement a thin yellow disc in front of the empty third sector. With a little one

Claims (1)

Hebel wird für die Rotgrünmessung diese Gelbscheibe vor das blauselektive Element gebracht, wodurch die erforderliche Grünselektion zur Bildung des zweiten Quotienten entsteht. Nun erfolgt die zweite Messung. Hierzu wird die elektrische Schaltung nach dem Patent 953 746, nämlich eine Brückenschaltung, verwendet.For the red-green measurement, the lever is placed in front of the blue-selective one Element brought, creating the necessary green selection to form the second Quotient arises. The second measurement now takes place. To do this, the electrical Circuit according to patent 953,746, namely a bridge circuit, is used. PATENTANSPRUCH: Anordnung zur Messung von Lichtquellen mit nicht kontinuierlichem Spektrum nach dem Anspruch I oder einem der folgenden Ansprüche des Patents 953 746, dadurch gekennzeichnet, daß zur Bildung des für die Bestimmung des erforderlichen zweiten Quotienten Rotgrün ein Gelbfilter, welches bei der Messung rothlau vor dem leeren Sektor liegt, vor das blauselektive Photoelement schiebbar ist, wodurch eine Grünselektion dieses Photoelements entsteht. PATENT CLAIM: Arrangement for measuring light sources with not continuous spectrum according to claim I or one of the following claims of the patent 953 746, characterized in that for the formation of the determination of the required second red-green quotient a yellow filter, which is used in the measurement red-blue is in front of the empty sector, can be pushed in front of the blue-selective photo element which results in a green selection of this photo element. In Betracht gezogene Druckschriften : Deutsche Patentschriften Nr. 677 493, 707 669. Publications considered: German Patent Specifications No. 677 493, 707 669.
DEST3195A 1951-03-21 1951-03-21 Measuring device for determining the color temperature of light sources with a discontinuous spectrum Expired DE964728C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEST3195A DE964728C (en) 1951-03-21 1951-03-21 Measuring device for determining the color temperature of light sources with a discontinuous spectrum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST3195A DE964728C (en) 1951-03-21 1951-03-21 Measuring device for determining the color temperature of light sources with a discontinuous spectrum

Publications (1)

Publication Number Publication Date
DE964728C true DE964728C (en) 1957-05-29

Family

ID=7453097

Family Applications (1)

Application Number Title Priority Date Filing Date
DEST3195A Expired DE964728C (en) 1951-03-21 1951-03-21 Measuring device for determining the color temperature of light sources with a discontinuous spectrum

Country Status (1)

Country Link
DE (1) DE964728C (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE677493C (en) * 1936-01-24 1939-06-27 Zeiss Ikon Akt Ges Photoelectric light meter for color photographic purposes
DE707669C (en) * 1937-12-05 1941-06-30 I G Farbenindustrie Akt Ges Device for measuring the color of lighting

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE677493C (en) * 1936-01-24 1939-06-27 Zeiss Ikon Akt Ges Photoelectric light meter for color photographic purposes
DE707669C (en) * 1937-12-05 1941-06-30 I G Farbenindustrie Akt Ges Device for measuring the color of lighting

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