Olympus BXFM Instructions Manual page 68

System microscope

Table of Contents

Abbreviations used for objective

Ex)

For metal (without cover)

LM For long working distance metal

SLM For super long working distance metal

For observation through glass

Glossary in optical performance table

Working distance:

Numerical aperture: Important value that determines the performances (resolution, focal depth and brightness) of the

Resolution:

Focal depth:

Field number: Indicates the diameter of the image area visible by the eyepiece in mm.

Actual field:

None Achromat: Corrects the aberration by 2 wavelengths (blue and red).

Semi-apochromat: Corrects the color aberration in the visible range (from blue-violet to red)

APO Apochromat: Corrects the color aberration in the entire visible range (from violet to red)

Plan: Corrects the image plane curvature around the field.

Distance between the tip of the objective and the focal position

objective

Resolution

Increases in proportion to the numerical aperture.

Focal depth

Decreases in proportion to the numerical aperture.

Brightness

Increases in proportion to the square of the numerical aperture. (comparing with the

same magnification)

Indicates the limit where the objective can identify two approaching images using the distance between

2 points on the sample surface.

Indicates the sample depth focused at the same time. The depth increases when the aperture

diaphragm is narrowed down and decreases when the numerical aperture of the objective becomes

larger.

Indicates the diameter of the field area on the sample surface in mm.

Number Objective magnification

None UIS objective

UIS2 objective

None For brightfield

For brightfield/darkfield

BDP For brightfield/darkfield, polarization

For infrared

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