Seme LAB LL07B Miniature fluorescent bulb Datasheet

SYSTEMS DIVISION
LL07 RANGE
MINIATURE FLUORESCENT BULBS
THE LL07 RANGE OF MINIATURE
FLUORESCENT BULBS
MECHANICAL DATA
Dimensions in mm
7.0
FEATURES:
• SMALL SIZE
• WIDE RANGE OF SPECTRAL OUTPUTS:
11.0
16.5
UV,BLUE, WHITE, GREEN, AND RED
Anode
•
•
•
•
•
Cathodes
APPLICATIONS:
6.0
39.0
LOW VOLTAGE SUPPLY
HIGH RADIANT INTENSITY
HIGH MODULATION FREQUENCY
LONG LIFE TIME
LOW COST
5.0
Phosphor
Coating
Anode
Mercury
Atoms
•
•
•
•
MEDICAL INSTRUMENTS
METROLOGY
ILLUMINATION ENGINEERING
FLUORESCENT / PHOSPHORESCENT
MEASUREMENTS
Electrons
1KOhm
• ENVIRONMENTAL MONITORING
Heated
Cathode
5.3V
24V
DESCRIPTION
The LLO7 devices are a range of miniature fluorescent bulbs. The device structure has been designed to give maximum
radiant intensity with low voltage operation.
The principal difference between the miniature and a conventional fluorescent lamp is the filament cathode. When
powered up, electrons are emitted from the cathode by thermionic emission. These electrons are then accelerated towards
the anode due to the potential difference between the anode and cathode. The electrons collide with mercury atoms and
excite an orbital electron. The electron decays to a lower energy level and emits a photon of short wavelength ultra-violet
light. This photon stimulates the phosphor coating on the inside of the glass bulb.
Depending on the type of phosphor used red, green, blue, white or long wavelength ultra-violet light is emitted from the
device. The short wavelength ultra-violet light is absorbed by the glass bulb. See diagram.
The dimensions are subject to a typical tolerance of +0.5mm. Advice on suitable materials to encapsulate the bulbs is
available from Semelab Plc.
Semelab Plc. reserve the right to change the products shown on this datasheet in the interest of improved specification. No responsibility is assumed for the use of
information contained herein, nor for any infringement of patent or rights of others that may result from such use. No license is granted by implication or otherwise
under any patent or patent right of Semelab Plc.
Semelab plc
Telephone (01455) 556565
E-mail: [email protected]
Fax (01455) 552612.
Web site: http://www.semelab.co.uk
Prelim. 10/98
SYSTEMS DIVISION
LL07 RANGE
MINIATURE FLUORESCENT BULBS
SPECIFICATIONS
(At 25°C unless otherwise stated)
The electrical specifications tabulated below are a brief summary and are applicable to all the devices. For information
concerning the tolerances of the stated drive voltages and the subsequent effect on the spectral properties of the device
contact Semelab Plc..
Parameter
Minimum
Typical
Maximum
Notes
Unit
Anode Voltage
23
24
25
Anode Current
11.5
13.0
14.5
Anode Resistance
990
1000
1010
*
Cathode Voltage
5.2
5.3
5.4
V
Cathode Current
39
43
47
2
mA
Bulb Wall Temperature
40
60
70
3
*C
V
1
mA
Notes
1. Anode current measured for anode to cathode voltage of 24V, cathode voltage of 5.3V and an anode resistance of
1Kohm.
2. Cathode current measured for cathode voltage of 5.3V and anode to cathode voltage of 0V.
Spectral Plot of Red
Fl
Spectral Plot of Green
Fl
100
Relative Intensity (%)
Relative Intensity (%)
100
80
60
40
20
80
60
40
20
0
0
200
300
400
500
600
700
200
800
300
400
Wavelength (nm)
Spectral Plot of Blue
Fl
600
700
800
700
800
Spectral Plot of Ultra-violet
Fl
100
100
Relative Intensity (%)
Relative Intensity (%)
500
Wavelength (nm)
80
60
40
20
80
60
40
20
0
200
0
300
400
500
600
700
800
200
300
Wavelength (nm)
400
500
600
Wavelength (nm)
Semelab Plc. reserve the right to change the products shown on this datasheet in the interest of improved specification. No responsibility is assumed for the use of
information contained herein, nor for any infringement of patent or rights of others that may result from such use. No license is granted by implication or otherwise
under any patent or patent right of Semelab Plc.
Semelab plc
Telephone (01455) 556565
E-mail: [email protected]
Fax (01455) 552612.
Web site: http://www.semelab.co.uk.
Prelim. 10/98
SYSTEMS DIVISION
LL07 RANGE
MINIATURE FLUORESCENT BULBS
Spectral Plot of White
Fl
Relative Intensity (%)
100
80
60
40
20
0
200
300
400
500
600
700
800
Wavelength (nm)
Optical Characteristic Ultra-violet
Part Number
LL07UV
Luminance(peak value)
Radiant Intensity
2.7
Chromaticity
x
y
White
LL07W
3900
Blue
LL07B
1600
Green
LL07G
7000
Red
LL07R
2700
0.290
0.350
0.130
0.075
0.223
0.645
0.572
0.310
Unit
cd/m2
mW/sr
Semelab Plc. reserve the right to change the products shown on this datasheet in the interest of improved specification. No responsibility is assumed for the use of
information contained herein, nor for any infringement of patent or rights of others that may result from such use. No license is granted by implication or otherwise
under any patent or patent right of Semelab Plc.
Semelab plc
Telephone (01455) 556565
E-mail: [email protected]
Fax (01455) 552612.
Web site: http://www.semelab.co.uk.
Prelim. 10/98
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