| Designation Magnification Working Distance | SLWD 10x 20.3 mm | SLWD 20x 20.5 mm | SLWD 50x 13.8 mm | SLWD 100x 4.7 mm |
|---|
What is the working distance for a 40X objective lens?
| Objective Optical System Infinite | Objective Focal Length 5mm | Objective for Focal Length 200mm | Objective Working Distance 3.77mm |
|---|
How big is the working distance with the 10x objective lens?
| Designation Magnification Working Distance | ELWD 20x 11.0 mm | ELWD 50x 8.7 mm | ELWD 100x 2.0 mm | SLWD 10x 20.3 mm |
|---|
What is the focal length of a 10x lens?
| 10X Objective Specifications | Effective Focal Length (EFL) 20 mm 18 mm | Working Distance 20.0 mm 10 mm | Parfocal Length 95.0 mm 45.06 mm | Design Tube Lens Focal Length 200 mm 180 mm |
|---|
Which objective lens has the greater working distance 10x or 40X?
In Figure 3, we compare lens elements in a series of apochromatic objectives ranging from 10x to 100x in magnification. The lower power apochromat objectives (
10x and 20x
) have a longer working distance and the overall objective length is shorter than in higher power (40x and 100x) apochromat objectives.
Which objective has the smallest working distance?
| Question Answer | This objective lens provides the second highest magnification? Answer: high dry | This objective lens provides the lowest magnification? Answer: low power | This objective lens has the shortest working distance? Answer: oil immersion |
|---|
What objective lens has the greatest working distance?
Working distance is greatest when
the low power objective is in use
. It is appropriate to use the course adjustment under low power. Working distance decreases as magnifying lenses are increased. Do not focus with the course adjustment when using the high dry objective (40X) or the oil immersion objective.
What is working distance of a lens?
The distance between the front edge of the objective lens and the specimen surface
(with the surface of the cover glass in case of the cover glass objective lens) when the specimen is focused. …
Which is the shortest objective lens?
A scanning objective lens that magnifies 4x
is the shortest objective and is useful for getting a general overview of a slide. A low-power objective lens magnifies 10x, but remember that it is coupled with an eyepiece lens, so the total magnification is 10x times the power of the eyepiece lens.
Working distance is
the distance between the objective lens and the specimen
. At low magnification the working distance is relatively long. As you increase the magnification the working distance decreases dramatically.
What are the 3 objective lenses?
Most compound microscopes come with interchangeable lenses known as objective lenses. Objective lenses come in various magnification powers, with the most common being
4x, 10x, 40x, and 100x
, also known as scanning, low power, high power, and (typically) oil immersion objectives, respectively.
What is the 10x objective lens used for?
The objective and ocular lenses are responsible for
magnifying the image of the specimen being viewed
. So for 10X objective and 10X ocular, Total magnification = 10 X 10 = 100X (this means that the image being viewed will appear to be 100 times its actual size).
What is the objective focal length?
The focal length of a microscope objective is typically
between 2 mm and 40 mm
. However, that parameter is often considered as less important, since magnification and numerical aperture are sufficient for quantifying the essential performance in a microscope.
What can you see with 40x magnification?
- At 40x magnification you will be able to see 5mm.
- At 100x magnification you will be able to see 2mm.
- At 400x magnification you will be able to see 0.45mm, or 450 microns.
- At 1000x magnification you will be able to see 0.180mm, or 180 microns.
What is the 40x objective lens called?
40x (high power) Lens. Also called
a high, dry objective
; used for specimens that require a greater degree of magnification. 100x (oil immersion) Lens.
Which objective lens should be used first?
3. When focusing on a slide, ALWAYS start with
either the 4X or 10X objective
. Once you have the object in focus, then switch to the next higher power objective. Re-focus on the image and then switch to the next highest power.
