Application of lense

8,040 views 21 slides Jul 24, 2014
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About This Presentation

Use of lenses in daily life


Slide Content

APPLICATION OF LENSES ZUHHA TAQDEES ROLL NO: 2512 SUBMITTED TO: MISS HINA

CONTENTS Lens Types of lenses Classification Applications

LENS It is an optical device that transmits and reflects light, converge or diverge beam.

NIMRUD LENSE 3000 years old Austen Henry Layard Assyrian Palace of Nimrud Magnifying Glass Burning Glass Piece of decoration

SIMPLE AND COMPOUND LENS Simple lens consists of simple single element Compound lens consists of more than one elements

ASPHERIC LENS A lens whose surface profiles are not a portion of a sphere or cylinder.

DOUBLET Made by pairing of two simple lenses Allows: More Optical surfaces More Thickness

CLASSIFICATION Classified on the basis of bending rays Converging lens ( convex lens ) Diverging Lens ( Concave lens )

APPLICATIONS Magnifying glass Spectacles Cameras Compound microscope Telescope Binoculars

MAGNIFYING GLASS

SPECTACLES Structure of eye Imperfect vision Near sightedness Far sightedness

Near Sightedness

Far Sightedness

CAMERAS Functions like eye Aperture; pupil Lenses Film; retina

COMPOUND MICROSCOPES Pair of convex lens Objective lens Eye piece

TELESCOPE

BINOCULARS Consists of two small telescopes Prisms Increase magnification

MEDICAL APPLICATIONS Autoscope Opthalmoscope

OTHER APPLICATIONS

CONCLUSION
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