real image

optics

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July 13, 2026

Quick Summary

A real image in optics is an apparent reproduction of an object formed by a lens or mirror system. This occurs when light rays are actually brought to a focus at the image position. Unlike virtual images, real images can be made visible on a screen, such as a sheet of paper.1

Examples of real images include those formed by a camera lens on film or by a projection lens on a movie screen. A convex lens can form a real image when the object is placed farther from the lens than its focal length, causing light rays to converge. Mirrors also form images through reflection, and modern mirrors typically use a glass sheet coated with a reflective metal like aluminum or silver.123

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optical image
In a real image the light rays actually are brought to a focus at the image position, and the real image may be made visible on a screen—e.g., a sheet of paper—whereas a virtual image cannot. Examples of real images are those made by a camera lens…
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In a real image the light rays actually are brought to a focus at the image position, and the real image may be made visible on a screen—e.g., a sheet of paper—whereas a virtual image cannot. Examples of real images are those made by a camera lens…
Read More

lens
Optical principles for lenses
This image may be either real—photographable or visible on a screen—or virtual—visible only upon looking into the lens, as in a microscope. The image may be much larger or smaller than the object, depending on the focal length of the lens and on the distance between the lens and the…
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This image may be either real—photographable or visible on a screen—or virtual—visible only upon looking into the lens, as in a microscope. The image may be much larger or smaller than the object, depending on the focal length of the lens and on the distance between the lens and the…
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optics
Historical background
A real image is formed outside the system, where the emerging rays actually cross; such an image can be caught on a screen or piece of film and is the kind of image formed by a slide projector or in a camera. A virtual image, on…
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A real image is formed outside the system, where the emerging rays actually cross; such an image can be caught on a screen or piece of film and is the kind of image formed by a slide projector or in a camera. A virtual image, on…
Read More