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White Light Source

White Light Source: ELS-250

ELS-250 White Light Source Features
  • 10,000 hours of long lamp life *1
  • Superior CRI of Ra=94
  • High brightness >650,000lx *2
  • Perfect continual spectrum over the VIS 400nm to 750nm
  • Cool illumination, less IR radiation
  • *1 Defined as time to 50% of original brightness
    *2 Actual values measured 100mm from end of the collimating lens via hibrid light guide (active core 10mm dia.) Those values are typical output and actual output may vary.


Applications

The ELS-250, fiber optic illuminator, is ideal as a heat free perfect white light souce for many applications like;

  • Machine Vision
  • Surface Inspection
  • General Microscopy
  • Fluorescence Microscopy
  • Other technical lighting application

Electrodeless Technology


High Intensity Electrodeless Lamp

The ELS-250 is based on the electrode-less technology driven by a solid state RF (radio frequency) apmlifier to eliminate the primary degradation mechanism associatecd with HID lamps. Without electrodes in its design, the ELS-250 can offer extremely long life and unprecedented reliablility in technical lighting applications. It excess over 10,000 hours of lamp life while a tpical metal halide system only last up to 2,000 hours of lamp life.

Hours of Operation(hrs)1

Hours of Operation(hrs)

Hours of Operation(hrs)2

Hours of Operation(hrs)

Spectrum and Color Rendering Property


ELS-250 Spectral Output

ELS-250 Spectral Output

*The spectral output shown on the graph were obtained via 8mm diameter core liquid light guide.

The ELS-250 produces a perfect continual spectrum in VIS region, 400nm to 750nm. Heat transfer is eliminated by its nature of spectrum from the electrodeless lamp that does not emits IR radiation.


ELS-250 Color Rendering Properties

ELS-250 Color Rendering Properties

The ELS-250 is ideal for technical lighting applications where high CRI is required for accurate color rendering of illuminated objects.




Panel Controls


panel control

User friendly menu and comprehensive display for easy unit operation and maintenance.

  • Lamp ON/OFF
  • Shutter Activation OPEN/CLOSE
  • Light Intensity Adjustment(30 to 100%)

panelcontrol RS232

*All of those features can be controled remotely by using RS232C.

Light Control and Shutter


Light Control and Shutter

Light intensity can be quickly and reliably set from 30% to 100%. You can easily set the desirable percentage with the digital panel of the main unit just by pressing UP and DOWN buttons.

The ELS-250 is also equipped with an internal shutter which activated by button or RS232C commands.


Filter Holder


Filter Holder

Asahi Spectra produces many varieties of precise optical filters to help modification of spectrul output. You can select the filters from our optical filters page to fit your application.

This filter holder holds;
-50x50mm
-Φ50mm
with thickness between 1.0mm to 7.0mm


Optional Items

Light Guide


Light Guide

The illuminated light is delivered to the illuminated area via fiber light guide. We recomend to use ELS-250 with our original light guides but it is also compatible with most major light guides with optic fiber adapter. Please contact us to discuss your adapter needs prior to purchasing.



Spectral Performance - Light Guides
Spectral Performance - Light Guides

General Application;

1. Hybrid Light Guide
Active core: Dia. 10mm
Length: 1,500mm
NA: 0.57
Bending Radius: R=50mm

2. Liquid Light Guide
Active core: Dia. 8mm
Length: 1,500mm
NA: 0.59
Bending Radius: R=100mm

Microscopy Application;

3. Liquid Light Guide
Active core: Dia. 3mm
Length: 1,500mm
NA: 0.59
Bending Radius: R=40mm

*ELS-250 can be attached to your microscope via dia. 3mm liquid light guide with microscope adapter. Please contact us to find out an appropriate adapter for your microscope.

Collimating Lens


Collimating Lens

Collimating lense reduces the divergence of light from the light guide and provide uniform light output. It is suitable for directional backlighting which requires clear silhouette of an object.




Collimating Lens 2

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