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Field Observation Plan Achromatic Objective Lens 100X Microscope Objective

Beijing PDV Instrument Co., Ltd.
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    Buy cheap Field Observation Plan Achromatic Objective Lens 100X Microscope Objective from wholesalers
     
    Buy cheap Field Observation Plan Achromatic Objective Lens 100X Microscope Objective from wholesalers
    • Buy cheap Field Observation Plan Achromatic Objective Lens 100X Microscope Objective from wholesalers
    • Buy cheap Field Observation Plan Achromatic Objective Lens 100X Microscope Objective from wholesalers
    • Buy cheap Field Observation Plan Achromatic Objective Lens 100X Microscope Objective from wholesalers
    • Buy cheap Field Observation Plan Achromatic Objective Lens 100X Microscope Objective from wholesalers

    Field Observation Plan Achromatic Objective Lens 100X Microscope Objective

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    Brand Name : PDV
    Model Number : 378-831-5 , 378-832-6 , 378-833-5 , 378-788-5 , 378-835-5 , 378-836-5
    Price : Negotiable
    Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram
    Delivery Time : 1-2 weeks
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    Field Observation Plan Achromatic Objective Lens 100X Microscope Objective

    Light/Dark Field Observation Of BD Plan Apo And BD Plan Apo SL Spot


    Product specification:


    For light / dark field observation: BD Plan Apo


    Item Number

    Mag.

    N.A.

    W.D.

    f

    R

    D.F.

    field of view1

    field of view2

    Weight

    378-831-5

    2X

    0.055

    34.0mm

    100mm

    5.0µm

    91µm

    ø12mm

    42.4x3.2mm

    230g

    378-832-6

    5X

    0.14

    34.0mm

    40mm

    2.0µm

    14.0µm

    ø4.8mm

    0.96x1.28mm

    240g

    378-833-5

    10X

    0.28

    33.5mm

    20mm

    1.0µm

    3.5µm

    ø2.4mm

    0.48x0.64mm

    240g

    378-788-5

    20X

    0.42

    20.0mm

    10mm

    0.7µm

    0.7µm

    ø1.2mm

    0.24x0.32mm

    300g

    378-835-5

    50X

    0.55

    13.0mm

    4mm

    0.5µm

    0.9µm

    ø0.48mm

    0.10x0.13mm

    320g

    378-836-5

    100X

    0.70

    6.0mm

    2mm

    0.4µm

    0.6µm

    ø0.24mm

    0.05x0.06mm

    320g


    Bright / dark field of view: BD Plan Apo SL


    Item Number

    Mag.

    N.A.

    W.D.

    f

    R

    D.F.

    field of view1

    field of view2

    Weight

    378-840-5

    20X

    0.28

    30.5mm

    10mm

    1.0µm

    3.5µm

    ø1.2mm

    0.24x0.32mm

    240g

    378-841-5

    50X

    0.42

    20.0mm

    4mm

    0.7µm

    1.6µm

    ø0.48mm

    0.10x0.13mm

    310g

    378-842-5

    80X

    0.50

    15.0mm

    2mm

    0.6µm

    1.1µm

    ø0.3mm

    0.48x0.64mm

    320g

    378-843-5

    100X

    0.55

    13.0mm

    2mm

    0.5µm

    0.9µm

    ø0.24mm

    0.05x0.06mm

    320g


    Note: these objective lenses have very long working distance.


    When choosing the objective lens, I don't understand some professional terms very well. The field of view of the objective lens is a very important concept for microscope observation. If you choose a suitable field of view, it will play a very important role in observation. Sometimes when purchasing the microscope objective lens, because the field of view is not selected correctly, it will bring great trouble to the observer, or even can't see the sample at all, Or the effect is very bad. The following is a brief introduction to the two fields of view used by the objective lens, namely bright field and dark field:


    1. Bright field (BF): refers to the brightness difference (light and dark difference) generated by the difference of light absorption between the background and details to see the details.The illumination light irradiates the sample vertically through the objective lens. After the sample absorbs the light, it is vertically reflected and transmitted to the eyepiece or camera through the optical path. The obtained image is the bright field image.


    2. Dark field (DF): use the dark field aperture to let only the light scattered by details pass through the microscope, but not the direct light shining on the background into the microscope, so as to form an image of bright details and dark background, so that people can see the bright details under the dark back, just like looking at the stars in the sky at night. The incident light that passes through the camera or the oblique angle of the eyepiece is absorbed by the illumination of the sample, and the reflected light is absorbed by the oblique angle of the camera.


    When we study details at a high level, we can use the way of dark field. The most commonly used field of view of objective lens is bright field and dark field mode. In addition to the bright and dark fields, there are also the field of view modes of polarized light and differential interference.


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