The optics of the most basic microscope includes an objective lens and ocular or eyepiece. The objective lens is closest to the sample, specimen, or object being observed with the microscope (see the schematic diagram below). For more information, refer to the article: Optical Microscopes – Some Basics Show schematic diagram

Leica apochromats are objectives for applications with highest specifications in the visual range and beyond, offering field flatness up to 25 mm. The absolute values of the focus differences for the red wavelength and the blue wavelength to green wavelength (3 colors) are ≤ 1.0 x depth of field of the objective.

For standard applications, Leica Microsystems offers an extensive range of top-class microscope objectives. There are also Leica objectives which have been optimized for special applications. The highest-performance Leica objectives feature maximum correction and optical efficiency and have won several awards. All over the world, scientists are relying on Leica microscope objectives to gain insights into their area of research.

Types ofobjective lenses

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Objectivelens function

Leica microscope objective lenses are designed and made by our optics specialists to have the highest performance with a minimum of aberrations. The objectives help to deliver superior microscope image quality for many applications, such as life science and materials research, industrial quality control and failure analysis, and medical and surgical imaging.

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The objective lens of a microscope forms a magnified, real, intermediate image of the sample or specimen which is then magnified further by the eyepieces or oculars and observed by the user as a virtual image. When a camera is used to observe the sample, then a phototube lens is installed after the objective in addition to, or even in place of, the eyepieces. The phototube lens forms a real image of the sample onto the camera sensor. The objective’s numerical aperture (NA), its ability to gather light, largely determines the microscope’s resolution or resolving power to distinguish fine details of the sample. Also, the working distance, the distance between the sample and objective, and the depth of field, the depth of the space in the field of view within which the sample can be moved without noticeable loss of image sharpness, both greatly depend on the properties of the objective lens. For more information, refer to: Collecting Light: The Importance of Numerical Aperture in Microscopy, How Sharp Images Are Formed, & Optical Microscopes – Some Basics & Labeling of Objectives

Leica achromats are powerful objectives for standard applications in the visual spectral range, offering field flatness (OFN) up to 25 mm. The absolute value of the focus differences between red wavelength and blue wavelength (2 colors) is ≤ 2x depth of field of the objective.

Eye damage guaranteed from careless use. Our 365 nM UV light torch LEDs are manufactured to produce light be almost invisible to the naked eye. It is made for a specific purpose and should not be used by children or people unauthorised by you the tradesman. Invisible UV is particularly dangerous to the human eye because it cannot detect that damage is being done.

Whatdoes the stagedo on a microscope

If you want maximum effect from “black light” reactive items, 365nm is the proper wavelength for this. 365nm UV light torch will activate faint traces in fluorescent objects (without the visible purple seen in a 395 nM UV light torch – click here for that version). Therefore our 365 nM UV light is more suited to close-up work and faint detection.

All Leica objectives are marked with codes and labels. These identify the objective, its most important optical performance properties, and the main applications it can be used for. For more information, refer to: Labeling of Objectives

High powerobjective microscopefunction

365nM UV generate less unwanted “Interference Light” and they may naturally appear weaker or more white compared to the visible purple 395nM version. This can be misleading and should not be misinterpreted. General rule of thumb is that the more visible UV light you see the less effective it will be for detailed, faint detection work.

Microscopeparts

2) Changing the distance changes the distortion of objects in the frame. Moving up closer to shoot a subject with a 35mm is going to give a more ...

... companies fighting for the ... I also had a set of University Optics eyepieces that I still use today. ... The Edmund lenses were still there, shims and all.

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This 3w 365 nM UV light torch (Blacklight) is powered by 4x AAA batteries. (not included  – but we recommend Alkaline for the slightly higher consistent voltage)

Whatare the 3objective lenses on a microscope

Leica semi-apochromats are objectives for applications in the visual spectral range with higher specifications, offering field flatness up to 25 mm. The absolute values of the focus differences for the red wavelength and the blue wavelength to green wavelength (3 colors) are ≤ 2.5x depth of field of the objective.

To make it easier for you to find which Leica objectives work best for your microscope and application, you can take advantage of the Objective Finder

Whatisobjectivelens inmicroscope

Not all products or services are approved or offered in every market, and approved labelling and instructions may vary between countries. Please contact your local representative for further information.

Whatis the magnification of the ocular lens

For modern cameras, a circular polarizer (CPL) is typically used, which has a linear polarizer that performs the artistic function just described, followed by a ...

365nm wavelength LED produce a near pure UV output which is the optimum frequency for UV fluorescence. You will see far more detail and in a greater range of colours in gemstones than any other wavelength.

Apr 5, 2024 — Microscope objectives are precision optical systems that feature a wide range of magnifications, numerical apertures, immersion media, ...

Nonlinear optic (NLO) crystals enable light frequency conversion applications from the deep UV to the far-infrared. We offer NLO crystals, complete with AR ...

Apr 28, 2022 — What is the radius of a quarter if the diameter is 23.98mm and the thickness is 1.60mm? radius = diameter / 2 The thickness is irrelevant.

In other words, it's how much of a scene the camera's sensor captures. A shorter focal length, such as that of a 24 mm lens, produces a wide angle of view. The ...

Do you need an individual objective for your application? Then contact our Leica OEM Optic Center so that we can offer you a customized solution.

Dog and Cat pee/urine detection at this 365nm wavelength. Dry urine will show easily on dark surfaces, fresh urine has a bluish look.

Oct 4, 2023 — The iris diaphragm also impacts the brightness of what you see through the optical viewfinder, the apparition of the vignetting effect or ...