Help with Microscope Lenses and Objectives specifications:
Lens Type
Back to Top
|
| ||
| Lens Type | |||
| Your choices are... | |||
| Condenser Lens | A condenser lens condenses light from an illuminator, which allows the focused light to enter the objective. | ||
| Eyepiece Lens | Eyepieces are lens assemblies that allow a person to look into a microscope. | ||
| Objective Lens | Objective lenses collect light and focus it, which allows the image to become visible. | ||
| Specialty / Other Lens | The lens is specialty/other. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
| |||
Optical Type / Correction Factor
Back to Top
|
|
| ||
| Optical Type / Correction Factor | |||
| Your choices are... | |||
| Abbe Condenser | The Abbe uses convex-convex triplet lens and a convex-flat lens. They also known as orthoscopic. | ||
| Aplanatic Condenser | Alpanatic condensers fix spherical aberration of the light path. | ||
| Achromatic Condenser | Achromatic condenser lenses correct chromatic aberration. | ||
| Kellner | Kellner or achromatic eyepieces are composed of an achromatic doublet and a convex-flat lens. | ||
| Huygenian | Huygens eyepieces are constructed of two plano-convex lenses with both plane sides facing the eye. | ||
| Periplan | Periplan eyepieces are constructed of one achromatic doublet and two plano-convex lenses with the convex surfaces facing each other. | ||
| Ramsden | Ramsden eyepieces consist of two plano convex lenses with both convex sides facing each other. | ||
| Achromatic | Achromatic objectives have two lens doublets arranged where both flat surfaces face each other and a front lens. | ||
| Apochromat | Apochromat objectives have a triplet lens, two doublets, a meniscus lens, and a front lens. The lenses are arranged by the flat surface of the triplet, which faces the convex surface of the first doublet. Then the flat surface of the first doublet faces the convex surface of the second doublet. The flat surface of the second doublet then faces the convex surface of the meniscus lens, which is followed by the front lens. | ||
| Fluorite | Fluorite objectives have a triplet lens, two doublets, a meniscus lens and a front lens. The lenses are arranged by the convex surface of the first doublet facing the flat surface of the triplet. Then the convex surface of the triplet faces the flat surface of the second doublet. The convex surface of the second doublet then faces the convex surface of the meniscus lens, which is followed by the front lens. | ||
| Plan | Plan objectives provide 95% flat-field correction. | ||
| Semi-Plan | Semi-plan objectives provide 80% flat-field correction. They can consist of either two achromatic lenses or three apochromat lenses. | ||
| Specialty / Other | The optical type / correction factor is specialty / other type. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
| |||
Specifications
Back to Top
|
|
| ||
| Magnification | The number of times the image is magnified. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
| |||
| Numerical Aperture | The numerical aperture (NA) is the opening that light travels through into the optical lens assembly. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
| |||
| Working Distance | The working distance is the distance between the front of the optical lens assembly and the object when in focus. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
| |||
| Field of View | The field of view is the angular or linear distance that the optical lens assembly can observe. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
| |||
Features
Back to Top
|
|
| ||
| Features | |||
| Your choices are... | |||
| Adjustable Focus | The lens has an adjustable focus. | ||
| Digital Eyepiece | The eyepiece has a camera that is connected to a computer via computer cable. | ||
| High Eye Point | High eye point eyepieces are designed to have the eye point that is above the surface of the eye lens. This allows the person to wear eye glasses and still be able to view the image. | ||
| IR / NIR | The working range of the lens is in the infrared et or near infrared spectral range. | ||
| Oil / Water Immersion | The lens uses oil or water to increase the resolution of the image. | ||
| Scale / Recticle | The magnifier has an internal scale or recticle grid for comparative measurements of dimensional or orientation features. A recticle is a flat, transparent component inscribed or etched with a grid or graduations. Recticles can be placed with the magnifier, or on top of, or along the side of the product being examined. | ||
| UV / NUV | The working range of the lens is in the ultra-violet or near ultra-violet spectral range. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
| |||
