Application of lense

Use of lenses in daily life

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

2. CONTENTS Lens Types of lenses Classification Applications

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

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

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

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

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

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

9. APPLICATIONS Magnifying glass Spectacles Cameras Compound microscope Telescope Binoculars

10. MAGNIFYING GLASS

11. SPECTACLES Structure of eye Imperfect vision Near sightedness Far sightedness

12. Near Sightedness

13. Far Sightedness

14. CAMERAS Functions like eye Aperture; pupil Lenses Film; retina

15. COMPOUND MICROSCOPES Pair of convex lens Objective lens Eye piece

16. TELESCOPE

17. BINOCULARS Consists of two small telescopes Prisms Increase magnification

18. MEDICAL APPLICATIONS Autoscope Opthalmoscope

19. OTHER APPLICATIONS

20. CONCLUSION