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What is the objective lens used for?

The objective lens is used in optical instruments such as microscopes and telescopes to gather and focus light onto the image plane. It plays a critical role in determining the magnification and resolution of the final image.


Who invented the achromatic lens?

The achromatic lens was invented by English scientist John Dollond in the 18th century. He developed this lens design to address issues of chromatic aberration in optical instruments like telescopes and microscopes, resulting in improved image quality.


What are the properties and uses of a concavoconvex lens?

A concavoconvex lens, also known as a meniscus lens, has one side that is concave (curved inward) and one side that is convex (curved outward). This type of lens can be used to correct vision problems, such as nearsightedness or farsightedness, in eyeglasses. It can also be used in optical instruments to focus light or magnify images. The shape of the lens allows for a more compact design compared to using two separate lenses.


What replaced glass in lens design?

After World War II, scientists began searching for optical instruments that used alternatives to glass lenses, such as radio waves


Name two lenses used in stage lighting instruments?

There are a variety of lenses used in theaterical or stage lighting. Here is a short list and their uses: Plano-Convex- This lens is used in standard Ellipsoidal Spotlights. One side is flat(plano) and the other is Convex. Convex-convex- This lens is also used in conjunction with Plano-Convex. This, however, has both sides of the lens as convex. Fresnel lens- Used in fresnels to disperse the light Par- These lenses are intergrated into the filament, envelope, and base of the lamp. These are bubble type lenses.


The instruments that can record images from telescopes by changing radiation into electrical charges?

lens possibly


Where are lens are used?

Lens are widely used. The most common example of the usage of lens is the spectacles. The spectacles contain either convex or concave lenses. In some cases it is plane. Convex Lens are widely used in Magnifying glasses, Microscope and Telescopes. Convex lens are used in torch lights. It helps in concentrating the light rays emitted from the bulb to a point, hence increasing the intensity of light at that point.


What ocular lens is used for near sight?

The ocular lens used for nearsightedness is known as a diverging lens. It is also known as a concave lens.


Which lens is used in a camera?

bioconvex lens


What lens is used in pair of binoculars?

A convex lens.


What is a lens cap used for?

? to protect the lens i assume.


What type of lens is used in an overhead?

Fresnel lens