Konica Minolta T-10A /T-10MA/ T-10WSA/T-10WLA ⿎⿎Software CL-S10w, CL-200A, ⿎⿎System diagram, Color temperature, Photographic color meter, Correlated color temperature, CL-200A, normally in terms of uv

F o r a c c u r a t e m e a s u r e m e n t s o f c o lo r t e m p e r a t u r e , u s e t h e C L - 2 0 0 A !

⿎⿎System diagram

Measurement accuracies of CL-200A and photographic color meter

When measuring light sources with non-continuous spectrums such as LEDs, etc., accurate illumination color temperature is particularly required. The CL-200A can measure color temperature accurately.

CL-200A

The CL-200A has sensors that closely match the color-matching functions defined by the CIE (International Commission on Illumination), enabling precise color measurement. The measurement results can be displayed in various color notations such as "Correlated color temperature and uv" according to the application.

AABattery (2pcs.)*

Strap

Processing by computer

PC	Data Management Software
(commercially	CL-S10w
available)
	USB Cable
	T-A15 (2m)
Printing out data
RS-232C printer
(commercially available)	Printer Cable
	T-A12 (2m)

Optional receptor head

CL-200A*

Receptor Head

For CRT

Measurement

Hood CL-A11

*CL-200 Receptor Head can also be used.

For multi-point measurement / detached head

Adapter Unit for

Receptor Head

T-A21

Adaptor Unit for
Main Body	With LAN category-5 cable 1m
T-A20
Ex.: Head and body	LAN(10BASE-T )
connected via
	category-5 straight cable
cable
	(commercially
	available)

Photographic color meter

In order to take more beautiful pictures, it is sometimes necessary to attach filters in front of the camera lens to compensate for the color of the light illuminating the subject. A photographic color meter is a meter used to select the appropriate filters, with the sensitivity of its sensors adjusted to match that of the film or digital camera sensor. In addition, because it uses photographic

Case T-A10

Cap T-A13

<Standard accessories>

External Power
AC Adapter	Hard Case
		CL-200A
<Optional accessories>	CL-A10

Ex.: Multi-point measurement

Multi-point measurement requires use of optional AC adapter.

color temperature, which is calculated based mostly on the blue/red balance of the illumination, large errors may occur if it is used to measure light sources with non-continuous spectrums.

[Actual measurement data for daylight-color LED bulb]

	Measured color temperature	Color-temperature difference from
		standard-instrument measured value
Our company's standard instrument	5045	0
CL-200A	5011	-34
Photographic color meter	5600	555

C o lo r t e m p e r a t u r e a n d c o r r e la t e d c o lo r t e m p e r a t u r e Color temperature

When an ideal blackbody* is heated, it begins to emit light, and as the temperature increases the color of the emitted light changes from red to yellow to white. Since the color of the emitted light is determined by the temperature of the blackbody, the color of the light emitted by the blackbody can be expressed as the absolute temperature of the blackbody (in Kelvin). This color notation scale is called "color temperature". For example, a 7000 K color would be the color of the light emitted by a blackbody heated to 7000 K. Figure 1 shows the color of light emitted by a blackbody at various temperatures plotted on an xy chromaticity diagram. This curve is called the "blackbody locus"; "color temperature" expresses a color on this blackbody locus.

Correlated color temperature

Since the color of white light emitted by illumination equipment and displays is generally close to the blackbody locus, the color of such light sources is normally expressed using "color temperature".

However, the color of such light sources is not directly on the blackbody locus. Because of this, a way to enable similar color expression for colors within a larger region close to the blackbody locus was devised. This is called "correlated color temperature", and the larger region is shown by the isotherms on the xy chromaticity diagram in Figure 2.

To accurately express the correlated	y
color temperature of a light-source	0.90
color, it is necessary to state not only	0.80	520	530							0.50										3000	2500
the correlated color temperature but the				540
		510																		3500
										0.45
difference from the blackbody locus,	0.70				550														4000
normally in terms of uv.	0.60					560													4500
							570			0.40									5000
		500
	0.50																		6000
*Blackbody								580
						30002500		2000	590	0.35									7000
	0.40																		8000
An ideal radiator. A body which completely absorbs all						3500	*
						4000	A	1500 600											9000
					4500
incident electromagnetic radiation. Although a perfect				D55		* * B			610									10000
				D65	*	C			620
	0.30			D75	* *					0.30						13000
blackbody does not actually exist, coal is a familiar		490		10000					650					15000
	0.20								680～780			20000
											30000
object that acts similarly.										0.25	50000
		480									. 02uv
	0.10											01uv
										0				. 00uv
											0 .
		470								＋			±0			. 01uv
											＋				0			. 02uv
	0.00	460		380～440						0.20				-			0
		450														-
		0.10 0.20 0.30 0.40 0.50 0.60 0.70 x														0.25			0.30 0.35 0.40	0.45 0.50 0.55
	Figure 1: Blackbody locus on xy chromaticity diagram									Figure 2: Closeup of blackbody locus on xy chromaticity
										diagram showing correlated color temperature region

8Chroma Meter CL-200A

*Not included as standard accessory in some areas.

Main specifications of Chroma Meter CL-200A						Main specifications of Data Management
⿎Model⿎	Chroma Meter CL-200A					⿎⿎Software CL-S10w
Luminance meter Conforms to requirements for Class AA of JIS C 1609-1: 2006 "Illuminance						Type	Add-in for Excel® * Excel is required to use this add-in.
class	meters Part 1: General measuring instruments"
Relative spectral	Closely matches CIE Standard Observer curves x¯(λ), y¯(λ), and z¯(λ)					Operating	One of the following environments with Excel®
response	Within 6% (fi') of the CIE spectral luminous efficency V(λ)					environment	installed:
Cosine response (f2)	Ev: Within 3%						Windows® XP + Excel® 2003 (English, Japanese, or
Receptor	Silicon photocell						Simplified Chinese)
							Windows® 7 + Excel® 2010 (English, Japanese, or
Measuring	Tristimulus values: XYZ						Simplified Chinese)
function	Chromaticity: Evxy; Evu'v'; Ev, Dominant wavelength, Excitation purity						* For details on system requirements for above versions of
	Correlated color temperature: EvTcp ∆ uv; Tcp(JIS method; available only with						Windows®and/or Excel®,
	CL-S10w)	(Evxy), ∆ (Evu'v'), ∆ Ev∆ u'v'(Target: 1)					refer to their respective specifications.
Other function	Color difference: ∆ (XYZ), ∆						* Languages in parenthesis ( ) are the OS language.
	User calibration function, Data hold function, Multi-point measurement						* Not compatible with 64-bit versions of Office 2010.
	(2 to 30 points)					Compatible	CL-200A, CL-200*
Measuring range	0.1 to 99,990 lx, 0.01 to 9,999 fcd (Chromaticity: 5 lx, 0.5 fcd or above) in					instruments	* Some functions not usable with CL-200.
	four automatically selected ranges (lx or fcd is switchable)
Accuracy*	Ev (Linearity): ±2%±1digit of displayed value
	xy: ±0.002
Repeatability*	Ev: 0.5%+1digit (2σ),
	xy: ±0.0005
Temperature drift	Ev: ±3% ±1digit of displayed value, xy: ±0.003
Humidity drift	Ev: ±3% ±1digit of displayed value, xy: ±0.003
Response time	0.5 sec. (continuous measurement)
Computer interface	USB
Printer output	RS-232C
Display	4-significant-digit LCD with back-light illumination
Operating temperature/ -10 to 40˚C, relative humidity 85% or less (at 35˚C) with no condensation
humidity range
Storage temperature	-20 to 55˚C, relative humidity 85% or less (at 35˚C) with no condensation
/ humidity range	2 AA-size batteries / AC adapter AC-308		(optional; for 1 to 10 receptors) or
Power source
	AC adapter AC-311 (optional; for 1 to 30 receptors)
Battery life	72 hours or longer (When alkaline batteries are used) in continuous
	measurement
Dimensions	69×174×35 mm (2-6/16×6-14/16×1-7/13in.)
Weight	215 g (7.6 oz.) not including batteries
* 800 lx, Standard Illuminant A measured
⿎⿎Dimensions (Units: mm)
With receptor head attached to main body						With adapter unit attached to receptor head
	Center of receptor	Reference plane
	window	φ25		35			7.5	35
			7.5		Tripod socket
	56.3					56.3（）	50 45.2φ
			45.2φ
							25
	18		174			46.3（ ）	φ4.5
	13
							hole
							30	27.5
							（71.8）

6930

Chroma Meter CL-200A 9