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Olympus is proud to introduce the BX51-P, the new polarizing microscope with superb performance in polarized light. It's a breakthrough combination of world-renowned UIS infinity-corrected optics and Olympus original optical-design. Olympus has also devised a new, extended line of compensators to make the BX51-P versatile enough to handle observation and measuring applications in virtually any field. |
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Zonal structure of Plagioclase in quartz diorite. |
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Optical texture of MBBA |
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UIS provides outstanding system expandability.
By maximizing the advantages of infinity correction, the UIS optical system prevents the deterioration of optical microscope performance and eliminates magnification factors, even when polarizing elements like analyzers, tint plates or compensators are introduced into the light path.
Maintaining the highest level of system flexibility, the BX51-P also accepts intermediate attachments available for the BX2 Series system microscopes, as well as video cameras and photomicrographic systems. |
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BX51-33P
(Conoscopic/Orthoscopic version) |
BX51-33PO
Orthoscopic version) |
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With the U-CPA conoscopic observation attachment, the changeover between orthoscopic and conoscopic observation methods is simple and quick — just slide the Bertrand lens control knob in or out.
The circular rotatable stage has two centering knobs and allows smooth sample rotation. A settable click stop every 45 degrees enables accurate observation and measurement.
An ergonomic Y-shaped frame ensures comfortable, efficient observation with less fatigue, even over prolonged periods.
Standard field number F.N. 22 represents a 21% increase in field size, covered with the conventional F.N. 20.
The high intensity 12V, 100W halogen light source combined with the UIS optical system and its high transmittance result in exceptionally bright and sharp images.
Mounting an attachable crossmovement mechanical stage (U-FMP) onto the circular rotatable stage makes for improved observation efficiency. Interference between the mechanical stage and the objectives is eliminated, so that images of superb quality can be effortlessly observed with all objective magnification. |
An upgrade in polarization characteristics.
Thanks to Olympus' sophisticated design and manufacturing technology, new ACH-P and UPLFL-P strain-free objectives reduce internal strain to an absolute minimum.
Olympus has also totally redesigned its polarizers and polarizing condensers to further enhance performance in polarized light. This means a higher EF* value, resulting in unmatched image contrast.
To meet a diversity of research and application requirements, the universal UPLFL-P Series objectives have been designed to accommodate a wide range of observation methods, including Nomarski DIC and fluorescence microscopy, in addition to polarized light observation.
*The EF (extinction factor) is the brightness ratio between parallel and crossed pol-filters. The higher the EF value, the better the extinction. |
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UPLFL-P Series
ACH-P Series
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UPLFL-P Series |
PL-P Series |
ACH-P Series |
Item |
N.A. |
W.D. |
UPlan FL 4xP |
0.13 |
13.0mm |
UPlan FL 10xP |
0.30 |
3.1mm |
UPlan FL 20xP |
0.50 |
1.6mm |
UPlan FL 40xP |
0.75 |
0.51mm |
UPlan FL 100xOP |
1.30 |
0.10mm |
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Item |
N.A. |
W.D. |
Plan FL 4xP |
0.1 |
22.0mm |
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Item |
N.A. |
W.D. |
ACH 10xP |
0.25 |
6.1mm |
ACH 20xP |
0.40 |
3.0mm |
ACH 40xP |
0.65 |
0.45mm |
ACH 100xOP |
1.25 |
0.13mm |
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An extensive range of compensators is available.
Six different compensators are available for the BX51-P microscope, allowing measurement of various retardation levels, ranging from 0 to 20. For easier measurement, the direct readout method is featured. Higher image contrast can be attained by using a Senarmont* or Brace- Koehler compensator to change the retardation level in the entire field of view. |
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Measuring range of compensators
Compensator |
Measurement range |
Applications |
Thick Berek (U-CTB) |
0-11,000nm (20λ) |
Measurement of high retardation level (R*>3λ), (crystals, macromolecules, fiber, etc.) |
Berek (U-CBE) |
0-1,640nm (3λ) |
Measurement of retardation level (crystals, macromolecules, living organisms, etc.) |
Senarmont compensator (U-CSE) |
0-546nm (1λ) |
Measurement of retardation level (crystals, living organisms, etc.)
Enhancement of image contrast (living organisms, etc.) |
Brace-Koehler compensator 1/10λ (U-CBR1) |
0-55nm (1/10λ) |
Measurement of low retardation level (living organisms, etc.)
Enhancement of image contrast (living organisms, etc.) |
Brace-Koehler compensator 1/30λ (U-CBE2) |
0-20nm (1/30λ) |
Quartz wedge (U-CWE) |
500-2,200nm (4λ) |
Approximate measurement of retardation level (crystal, macromolecules, etc.) |
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*R= retardation level
For more accurate measurement, it is recommended that compensators (expect U-CWE) be used together with the interference filter 45IF546. |
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Unmatched sharpness in orthoscopic and conoscopic observations.
With a U-CPA conoscopic observation attachment, changeover between orthoscopic and conoscopic observation is simple and quick.
Focusing of conoscopic images is easy and accurate. Employing a Bertrand field stop makes it possible to obtain consistently sharp and clear conoscopic images. |
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Item |
Conoscopic and orthoscopic observation (U-CPA) |
Orthoscopic observation (U-OPA) |
Polarized light intermediate attachment (U-CPA or U-OPA) |
F.N. |
22 |
22 |
Bertrand lens |
Focusable |
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Bertrand field stop |
3.4mm diameter (fixed) |
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Engage or disengage Bertrand lens changeover between orthoscopic and conoscopic observation |
Position of slider  in Position of slider  out |
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Analyzer slot |
Rotatable analyzer with slot (U-AN360P) |
Analyzer (U-AN360P) |
360° dial-rotatable
Rotatable minimum angle 0.1° |
Revolving centerable nosepiece (U-P4RE) |
Quadruple, centerable attachable components: 1/4 wavelength retardation plate (U-TAD),
tint plate (U-TP530) and various compensators can be attached using plate adapter (U-TAD) |
Stage (U-SRP) |
Polarizing rotatable stage with 3-point centering function.
360° rotatable, lockable in any position, 360° graduated in 1° increments
(minimum retardation resolution 6', using vernier scale)
45° click stop function
 Slide holder (U-SCB2) and mechanical stage (U-FMP) can be attached |
Condenser (U-POC-2) |
Achromat strain-free condenser (U-POC-2), 360° rotatable polarizer with
swing-out achromatic top-lens, Click stop at position "0°" is adjustable.
N.A. 0.9 (top-lens in)
N.A. 0.18 (top-lens out)
Aperture iris diaphragm: adjustable from 2mm to 21mm diameters |
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BX51-P dimensions (unit: mm) |
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Power consumption: 250VA Note:
The length marked with an asterisk (*) may vary according
to the interpupillary distance setting.
Distance for figure is 62mm.
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