LL07 SEME-LAB | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 3

Technical content

MINIATURE FLUORESCENT BULBS Semelab plc Telephone (01455) 556565 Fax (01455) 552612. E-mail: sales@semelab.co.uk Web site: http://www.semelab.co.uk Prelim. 10/98 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. THE LL07 RANGE OF MINIATURE FLUORESCENT BULBS APPLICATIONS:

  • MEDICAL INSTRUMENTS
  • METROLOGY
  • ILLUMINATION ENGINEERING
  • FLUORESCENT / PHOSPHORESCENT MEASUREMENTS
  • ENVIRONMENTAL MONITORING FEATURES:
  • SMALL SIZE
  • WIDE RANGE OF SPECTRAL OUTPUTS: UV,BLUE, WHITE, GREEN, AND RED
  • LOW VOLTAGE SUPPLY
  • HIGH RADIANT INTENSITY
  • HIGH MODULATION FREQUENCY
  • LONG LIFE TIME
  • LOW COST MECHANICAL DATA Dimensions in mm Anode Electrons Heated Cathode 5.3V Mercury Atoms Phosphor Coating 24V 1KOhm

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. Anode Cathodes 11.0 6.0 16.5 39.0 5.0 7.0

(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.. 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. SYSTEMS DIVISION LL07 RANGE MINIATURE FLUORESCENT BULBS Semelab plc Telephone (01455) 556565 Fax (01455) 552612. E-mail: sales@semelab.co.uk Web site: http://www.semelab.co.uk. Prelim. 10/98 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. Parameter Minimum Typical Maximum Notes Unit Anode Voltage V Anode Current 11.5 13.0 14.5 mA Anode Resistance 990 1000 1010 Cathode Voltage 5.2 5.3 5.4 V Cathode Current mA Bulb Wall Temperature Spectral Plot of Red Fl 100 200 300 400 500 600 700 800 Wavelength (nm) Relative Intensity (%) Spectral Plot of Green Fl 100 200 300 400 500 600 700 800 Wavelength (nm) Relative Intensity (%) Spectral Plot of Blue Fl 100 200 300 400 500 600 700 800 Wavelength (nm) Relative Intensity (%) Spectral Plot of Ultra-violet Fl 100 200 300 400 500 600 700 800 Wavelength (nm) Relative Intensity (%)

Luminance(peak value) 3900 1600 7000 2700 cd/m2 Radiant Intensity 2.7 mW/sr Chromaticity x 0.290 0.130 0.223 0.572 y 0.350 0.075 0.645 0.310 SYSTEMS DIVISION LL07 RANGE MINIATURE FLUORESCENT BULBS Semelab plc Telephone (01455) 556565 Fax (01455) 552612. E-mail: sales@semelab.co.uk Web site: http://www.semelab.co.uk. Prelim. 10/98 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. Spectral Plot of White Fl 100 200 300 400 500 600 700 800 Wavelength (nm) Relative Intensity (%)