iris diaphragm

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Noun iris diaphragm has 1 sense

iris, iris diaphragm - diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
--₁ is a kind of diaphragm, stop

Definitions from the Web

Term: iris diaphragm

Description: The iris diaphragm refers to a device typically found in optical instruments, such as cameras and microscopes, that controls the amount of light passing through the lens by adjusting the diameter of the aperture. It consists of a series of overlapping metal blades or leaves which can be expanded or contracted to regulate the intensity and depth of field of the transmitted light.

Senses and Usages:

Optics: In the field of optics, an iris diaphragm is a component used in optical instruments to vary the size of the aperture, controlling the amount of light reaching the image sensor or film.

Example sentence: Adjusting the iris diaphragm on a microscope allows for proper illumination when observing small specimens.

Photography: In photography, the iris diaphragm is an essential part of a camera lens that regulates the amount of light entering the camera, thus affecting the exposure and depth of field in the captured image.

Example sentence: By widening the iris diaphragm, more light can enter the camera, resulting in a brighter photograph.

Medicine: In medical imaging, an iris diaphragm is employed to adjust the size of the aperture in radiographic equipment, aiding in image sharpness and clarity.

Example sentence: The radiologist adjusted the iris diaphragm of the X-ray machine to enhance the visibility of a specific area in the image.

Botany: Within botany, the iris diaphragm is a term used to describe the circular structure in the iris of a flower which controls the size of the pupil.

Example sentence: The iris diaphragm of the flower regulated the amount of sunlight received, preventing excessive exposure.

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