WHAT DOES THE ABBREVIATION MEAN WHICH IS USED ON UPRTEK SPECTROMETER?

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Product Function

UPRtek Light Measurement Meters used abbreviations, full names, units and descriptions are as follows:

UPRtek Spectrometer Parameter Abbreviation

No.AbbreviationFull NameUnitDescriptionsApplication
77SSISpectral Similarity IndexNew index for the spectral evaluation of luminaires developed by the Academy of Motion Picture Arts and Sciencesin collaboration with cinematographers, film lighting experts, and lighting manufacturers. Use any light source as the standard light source (or other preset standard light source such as CIE D55) to compare it with the test light source. The higher the index, the higher the suitability.In CV600 only
76TLMFTelevision Lighting Matching FactorIt compares the light source (A source, D65, D55, D50 as standard) with another source (such as LED light to fluorescent light). The higher the index, the higher the similarityIn CV600 only
75LBiLB indexIt is the Mired difference between the measured light and the target light. For example, the measured light of 4000K and the target light of 5000K are 50MK-1. The color temperature will be increased if added with blue(B), while it will be decreased if added with amber (A).In CV600 only
74CCiCC indexCCi is the distance between the blackbody radiations with or without green. 1 CCi equals 2.5 CC filter number.In CV600 only
73LBfLB filter numberLB stands for Light Balancing. The filter number varies with different suppliers. It is used to adjust the difference of color temperature between the measured light and the target color. Generally, the manufacturer takes CTO (Color Temperature Orange) and CTB (Color Temperature Blue) as units, which represents the corrected color, orange or blue.In CV600 only
72CCfCC filter numberCC stands for Color Compensation or Color Correction. The filter number varies with different suppliers. It is used to compensate the distance from the blackbody radiation, just like shortening DuvIn CV600 only
71MiredMiredMired = 1000000/CCT, is the deviation unit of the color temperature of the filter.In CV600 only
70%RHRelative HumidityRelative humidity, expressed as a percentage, indicates a present state of absolute humidity relative to a maximum humidity given the same temperatureIn PG200N only
69°CTemperatureTemperature is a physical quantity that expresses hot and cold.In PG200N only
68PSSPhytochrome Photostationary StateIt is the ratio of the concentration of phytochrome A red to the total concentration of phytochrome.In PG200N only
67Phytochrome A far redPhytochrome - Proteinfar-redPhytochrome A far red is a pigment in plants; it is a protein. When it absorbs far-red light, it will drive the pigment back into the form of absorbing red light, Pr. Plants mainly receive external light signals through phytochrome to adjust their own growths, developments and floweringsIn PG200N only
66Phytochrome A redPhytochrome - Protein redPhytochrome A red is a pigment in plants; it is a protein. When it absorbs red light, it will change into a pigment that absorbs far-red light, Pfr. Plants mainly receive external light signals through phytochrome to adjust their own growths, developments and flowerings.In PG200N only
65Beta-caroteneβ-caroteneβ-carotene is one of the carotenoids; it is widely found in the leaves, flowers and roots of plants.In PG200N only
64Chlorophyll BChlorophyll is a photosynthetic pigment that exists in plants, algae and cyanobacteria. Chlorophyll B can absorb light energy and sends it to Chlorophyll A for photoreaction; it is also called the accessory pigment.In PG200N only
63Chlorophyll AChlorophyll is a photosynthetic pigment that exists in plants, algae and cyanobacteria. Chlorophyll A is the pigment that mainly undergoes photoreaction, and that¡¦s why it is also called the primary pigment.In PG200N only
62PFD-R: FR ratioPPFD ratio between the red and far-red fieldsPPFD ratios within the 600~700nm range and 700~800nm range.In PG200N only
61PFD-B: G ratioPPFD ratio between the blue and green fieldsPPFD ratios within the 400~500nm range and 500~600nm range.In PG200N only
60COICyanosis observation IndexAn open-ended numerical scale ranking the suitability of a light source for the purpose of visual detection of the presence or onset of cyanosis. The lower the value of the index, the better the light source is deemed to be for that purposeIn MK350SP only
59MDERMelanopic Daylight Efficacy RatioCIE S 026/E:2018 ≙ mv, mel, D65 (DIN SPEC 5031-100, conversion factor relative to the type of D65 light, to calculate the melanopic daylight equivalent illuminance)In MK350SP only
58Cyanopic LuxIlluminance for S Cone CellS cone cells mainly percept blue color; the sensitivity range is 400 nm ~ 500 nm; the peak wavelength is about 420 nm ~ 440 nm; Impact on organisms is analyzed by quantifying the ambient light source through photoreceptor cells.In MK350SP only
57Erythropic LuxIlluminance for L Cone CellL cone cells mainly percept red color; the sensitivity range is 500 nm ~ 700 nm; the peak wavelength is about 564 nm ~ 580 nm; Impact on organisms is analyzed by quantifying the ambient light source through photoreceptor cellsIn MK350SP only
56Chloropic LuxIlluminance for M Cone CellM cone cells mainly percept green color; the sensitivity range is 450 nm ~ 630 nm; the peak wavelength is about 534 nm ~ 545 nm; Impact on organisms is analyzed by quantifying the ambient light source through photoreceptor cells.In MK350SP only
55Rhodopic LuxIlluminance for Rod CellImpact on organisms is analyzed by quantifying the ambient light source through photoreceptor cellsIn MK350SP only
54Melanopic RatioPercentage of Illuminance for Melatonin%Relationship between illuminance of melatonin and illuminance of photopic visionIn MK350SP only
53Mel Daylight LuxDaylight Illuminance for MelatoninThe indoor lighting environment which is "most suitable for sunlight" is calculated by simulating CIE D65 daylight.In MK350SP only
52Melanopic LuxIlluminance for MelatoninQuantitative light measurement of the stimulation level for melanoprotein in optical response to light sourceIn MK350SP only
51Mel IrradianceIrradiance for MelatoninuW/cm2Quantitative light measurement of the stimulation level for melanoprotein in optical response to light source.In MK350SP only
50TRANSMITTransmittance%The transmittance is defined as (the radiant flux transmitted/the radiant flux received)x100 %, based on which the wavelength response can be obtained.In MK350SP only
49SDCMStandard Deviation Color MatchingSDCM has the same meaning with that of Macadam Ellipse. The color within Macadam Ellipse (SDCM=1) drawn on the coordinate can¡¦t be identified by human eyes.In MK350SP only
48BINTo classify the chromaticity of LED, ENERGY STAR combines with ANSI C78.377 standard to classify various classes and make uniform BIN types. So the user may distinguish the chromaticity of LED products easily.In MK350SP only
47GAIGamut Area IndexThe Gamut Area Index is the ratio between the area of the eight standard colors (R1~R8) on CIE1976 coordinate measured by CRI and the area measured with the standard illuminant E(x,y = 0.333, 0.333). The higher the value is, the more saturated and bright the color is.In MK350SP only
46BL%Ratio of blue light with respect to blue light damage%Ratio index of radiant energy in blue light band (401 nm - 500 nm).Not in CV600 & PG200N
45RGBLH Risk GroupDefine the four RG grades of blue light damage risk according to the maximum exposure time (the maximum safe time for retina under direct exposure to light source) measured by blue light radiance.Not in CV600 & PG200N
44KbvBlue light hazard efficacy of luminous radiationW/lmBased on Kbv = EB/E (blue light hazard radiance, EB, and total luminance of the light source) to analyze individual light source spectrum radiation and level of blue light injury on human eyes.Not in CV600 & PG200N
43EBBlue light weighted irradianceW/m2The IEC62471 specification has blue light damage spectral function B (λ) built in. Determine major scope of blue light damage to human eyes with this function and factor in the light source spectral irradiance to obtain blue light radiation damage irradiance.Not in CV600 & PG200N
42Flicker RiskThe flicker risk model provides users with risk value of target light source according to IEEE PAR 1789-2015 flicker safety specification standards.In MK350SP & MK350NP only
41Min/Max (DB)dBWaveform minimum / maximum.In MK350SP & MK350NP only
40Min/Max (%)%Waveform minimum / maximum.In MK350SP & MK350NP only
39MaxVWaveform maximum.In MK350SP & MK350NP only
38MinVWaveform minimum.In MK350SP & MK350NP only
37AvgVWaveform average.In MK350SP & MK350NP only
36RMS(DB)Flicker square rootdBFlicker RMS is the square root of the average of a set of squares of statistical data.In MK350SP & MK350NP only
35RMS(%)Flicker square root%Flicker RMS is the square root of the average of a set of squares of statistical data.In MK350SP & MK350NP only
34SVMStroboscopic Effect visibility MeasureSVM is an index used to quantify the flicker effect. Higher value represents obvious flicker effect.In MK350SP & MK350NP only
33S/P (SP-Ratio)Scotopic vision / photopic vision ratioThe sensitivity of human eyes varies with the light of different wavelength. It can get the data such as illuminance based on the brightness function. However, the brightness function is different for human eyes under high brightness and low brightness. Therefore, it defines the ratio of photopic vision under high brightness and scotopic vision under low brightness, which is called S/P ratio.In MK350SP & MK350NP only
32CQSColor Quality ScaleCQS is a new light source quality parameter developed by NIST for the new solid-state lighting markets. Addressing CRI, assess light source with the 15 new colors: with a scale of 0-100, scores 100 suggest the best quality and zero the worst.In MK350SP & MK350NP only
31FrequencyFlicker FrequencyHzIt is the flicker rate of the measured light, or the frequency shown per second.Not in MK350D & PG200N
30Fpercent (Pct Flicker)Flicker percent%Flicker percent=(Maximum value-minimum value)/ ( Maximum value + minimum value). Higher value represents obvious flicker.Not in MK350D & PG200N
29Flicker IdxFlicker indexFlicker index= Area above the mean value /area below the mean value. Higher value represents obvious flicker.Not in MK350D & PG200N
28Rf / RgTM30 Rf / TM30 RgIt is a rating method proposed by IES for the performance of light source. Different from 8 standard colors, it defines 99 standard colors to present the performance of various wavelengths. Rf represents the similarity between the target light source and the reference light source under the standard colors. The value 100 represents it is identical, while the value 0 represents great difference. Rg represents the saturation difference between the target light source and the reference light source under the standard colors. The value 100 represents the saturation is the same, while the value larger than 100 represents saturation is higher, and the value smaller than 100 represents saturation is lower. Moreover, it could identify the difference more obviously through the color vector diagram and the color tolerance diagram.Not in MK350D & PG200N
27TLCITelevision Lighting Consistency IndexThe parameter is defined by referring to European Broadcasting Union (EBU), which is used to evaluate the light source under for television lighting.Not in MK350D & PG200N
26PFD-FRPFD in FR fieldμmol/(m2*s)PFD in range of 700~780nm (PG200N - 700~800nm)In MK350SP & PG200N only
25PFD-UVPFD in UV fieldμmol/(m2*s)PFD in range of 380~400nm (PG200N - 350~400nm)In MK350SP & PG200N only
24PFDPhotosynthetic Photon Flux Densityμmol/(m2*s)Number of photons in range of 380~780nm subjected by unit area in unit time. (PG200N - 350~800nm)In MK350SP & PG200N only
23PFD-BPFD in blue fieldμmol/(m2*s)PFD in range of 400~500nm.In MK350SP & PG200N only
22PFD-GPFD in green fieldμmol/(m2*s)PFD in range of 500~600nm.In MK350SP & PG200N only
21PFD-RPFD in red fieldμmol/(m2*s)PFD in range of 600~700nm.In MK350SP & PG200N only
20PPFDPhotosynthetic Photon Flux Densityμmol/(m2*s)It is the Photosynthetic Photon Flux Density defined in 400~700nm.In MK350SP & PG200N only
19PurityColor purity%It is the percent of the dominant wavelength in the standard illuminant. The closer the color purity is to 100%, the closer it is to the dominant wavelength.Not in MK350D and CV600
18Δv’ (Delta v’)CIE1976 color coordinate differenceIt is the v’ difference between CIE1976 coordinate and the Planck’s blackbody radiation with the same color temperature.Not in MK350D and CV600
17Δu’ (Delta u’)CIE1976 color coordinate differenceIt is the u’ difference between CIE1976 coordinate and the Planck’s blackbody radiation with the same color temperature.Not in MK350D and CV600
16Δy (Delta y)CIE1931 color coordinate differenceIt is the u’ difference between CIE1976 coordinate and the Planck’s blackbody radiation with the same color temperature.Not in MK350D and CV600
15Δx (Delta x)CIE1931 color coordinate differenceIt is the x difference between CIE1931 coordinate and the Planck's blackbody radiation with the same color temperature.Not in MK350D and CV600
14Λd (Lambda d)Dominate wavelengthnmThe dominant wavelength is used to express the color of the measured light. It could be hybrided by the spectrum color of the wavelength and the standard illuminant E(x,y = 0.333, 0.333).Not in MK350D and CV600
13IRRIrradianceW/m2It is the irradiance within the range of the wavelength specified in the specification.Not in MK350D
12DuvCIE1960 uv color coordinate differenceIt is the uv distance between CIE1960 coordinate and the Planck's blackbody radiation with the same color temperature. The value close to 0 indicates the color temperature and color are closer to that of the blackbody radiation. The positive value indicates it is above the blackbody radiation, while the negative value indicates it is below the blackbody radiation.Not in MK350D
11R1、R2、R3…R1515 standard colors of color rendering index.R6: Light blue, R7: Light purple-blue, R8: Light red-purple, R9: Saturated red, R10: Saturated yellow, R11: Saturated yellow, R12: Saturated yellow, R13: White skin color, R14: Leaf green, R15: Yellow skin colorNot in MK350D
10R1、R2、R3…R1515 standard colors of color rendering index.R1:Light grey-red, R2: Dark grey-yellow, R3: Saturated yellow-green, R4: Middle yellow-green, R5: Light yellow-greenNot in MK350D
9CRI (Ra)Color Rendering IndexAs defined by CIE, R1~R8 represent the value of eight standard colors, while CRI(Ra) is the average value of R1~ R8. The value 100 indicates the best quality of light source, while the value 0 indicates the worst quality of light source.All Models
8fcFootcandlefcIt is based on the unit lm/ft2.All Models
7u’,v’CIE1976 color coordinateChromaticity chart CIE1976 by CIE Represent light color with plane (2-dimension) coordinates (u’, v’).All Models
6x,y,X,Y,ZCIE1931 color coordinateChromaticity chart CIE1931 by Commission International de l’Eclairage (CIE) Represent light color with plane (2-dimension) coordinates (x, y).All Models
5I-TimeIntegration timeusThe integration time measured by the spectrometer.All Models
4ΛpV (Lambda pV)Peak Wavelength ValuemW/m2It is the highest power in the measured spectrum.All Models
3Λp (Lambda p)Peak WavelengthnmIt is the wavelength with the highest power in the measured spectrum.All Models
2LuxlluminancelxIt is the light flux received by each unit area.All Models
1CCTColor Correction TemperatureKThe color temperature is the color radiated by a black-body radiator under different temperatures. CCI has the color that is the closest to the ideal black-body radiator.All Models

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What does the abbreviation mean which is used on UPRtek spectrometer?

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Handbook Series

The Flicker Handbook

Everything thing you need to know about Flicker, an insidious, potentially serious lighting artifact impacting visual safety for public places like hospitals, offices, libraries, and more...

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About UPRtek

United Power Research and Technology

UPRtek (est. 2010) is a manufacturer of portable, high-precision light measurement instruments; Handheld Spectrometers, PAR meters, Spectroradiometers, Light Calibration Solutions.

UPRtek HQ, R&D and manufacturing are all based out of Taiwan, with Worldwide representation through our certified Global Resellers.

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