WF 25X Widefield Microscope Eyepiece, 23.2mm, FOV 10mm

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  • WF 25X Widefield Microscope Eyepiece, 23.2mm, FOV 10mm
  • WF 25X Widefield Microscope Eyepiece, 23.2mm, FOV 10mm
  • WF 25X Widefield Microscope Eyepiece, 23.2mm, FOV 10mm
  • WF 25X Widefield Microscope Eyepiece, 23.2mm, FOV 10mm
  • 25X magnification power
  • 23.2mm mounting size (in diameter)
  • Fits most common compound microscopes.
  • Increases the magnification power with clear optics.

Quick Overview
Standard Eyepiece. Eyepiece Optical Magnification: 25X. Eyepiece Size for Eye Tube: Dia. 23.2mm. Eyepiece Field of View: Dia. 10mm.

EY02021711 25X Eyepiece (Pair Dia. 23.2/FN10)
Eyepiece TypeStandard Eyepiece
Eyepiece Optical Magnification25X
Plan EyepiecePlan Eyepiece
Eyepiece Size for Eye Tube Dia. 23.2mm
Eyepiece Field of View Dia. 10mm
Surface TreatmentElectroplating Black
Net Weight0.04kg (0.09lbs)


Technical Info

EyepieceClose Λ
Eyepiece is also called ocular.
Eyepiece is a visual optical device that is used to observe an image formed by an objective lens after magnification.
Eyepiece can magnify the real image obtained by the magnification of the objective lens to form a clear and erect virtual image at the least distance of distinct vision (LDDV). For aberration, eyepiece is usually composed of several lenses that correct the residual aberrations produced during imaging by the objective lens. Usually, eyepiece has a relatively larger field of view and angular magnification.

The eyepiece is provided with a diaphragm in the middle of the upper and lower lenses, or at the lower end of the lower lens, wherein micrometer, reticle, pointer and other accessories are mounted.
On the eyepiece there is engraved with the following marks: eyepiece type, magnification, field of view number, and the like. For example, eyepiece is engraved with PL10X/22; PL represents plane eyepiece, or flat-field eyepiece, 10X is the magnification, 22 represents the field of view, and the glasses mark represents high eyepoint eyepiece, and C represents compensating eyepiece.
Generally, the outer diameter of the eyepiece of a compound microscope is 23.2 mm, and stereo microscope can have a much larger field of view diameter because of its low magnification, so the outer diameter is mostly 30 mm (or 30.5 mm).

The resolution capability of the microscope is determined by the numerical aperture of the objective lens, while the eyepiece plays only the magnification role. Therefore, for structures and details that cannot be distinguished by the objective lens, the eyepiece still cannot distinguish even if it is magnified again.
Eyepiece Optical MagnificationClose Λ
Eyepiece optical magnification is the visual magnification of the virtual image after initial imaging through the eyepiece. When the human eye observes through the eyepiece, the ratio of the tangent of the angle of view of the image and the tangent of the angle of view of the human eye when viewing or observing the object directly at the reference viewing distance is usually calculated according to 250 mm/focal length of eyepiece.
The standard configuration of a general microscope is a 10X eyepiece.
Usually, the magnification of the eyepiece of compound microscope is 5X, 8X, 10X, 12.5X, 16X, 20X.
As stereo microscope has a low total magnification, its eyepiece magnification generally does not use 5X, but can achieve 25X, 30X and other much bigger magnification.
Eyepiece Field of ViewClose Λ
The eyepiece field of view is the diameter of the field diaphragm of the eyepiece, or the diameter of the image plane of the field diaphragm imaged by the field diaphragm.
The diameter of a large field of view can increase the viewing range, and see more detail in the field of view. However, if the field of view is too large, the spherical aberration and distortion around the eyepiece will increase, and the stray light around the field of view will affect the imaging effect.
PackagingClose Λ
After unpacking, carefully inspect the various random accessories and parts in the package to avoid omissions. In order to save space and ensure safety of components, some components will be placed outside the inner packaging box, so be careful of their inspection.
For special packaging, it is generally after opening the box, all packaging boxes, protective foam, plastic bags should be kept for a period of time. If there is a problem during the return period, you can return or exchange the original. After the return period (usually 10-30 days, according to the manufacturer’s Instruction of Terms of Service), these packaging boxes may be disposed of if there is no problem.
Packaging TypeCarton Packaging
Packaging MaterialCardboard Box
Inner Packing MaterialPlastic Bag
Ancillary Packaging MaterialsSponge
Gross Weight0.20kg (0.44lbs)
Minimum Packaging Quantity1 Pair
Transportation CartonCarton Packaging
Transportation Carton MaterialCorrugated Carton
Transportation Carton Dimensions(1)15.2x15.2x15.2cm (6x6x6″)
Total Gross Weight of Transportation(kilogram)0.34
Total Gross Weight of Transportation(pound)0.75

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