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1 Converging Lenses Biconvex lens Planoconvex lens Positive - PDF document

Dec 16, 2023 •593 likes •703 views

Lenses 2 types converging and diverging Oct 289:52 AM Converging Lenses rays that are parallel to the principal axis, strike the lens, and converge to a single point on the opposite side of the lens (they pass through 2 surfaces) Oct

  1. Lenses 2 types converging and diverging Oct 28­9:52 AM Converging Lenses rays that are parallel to the principal axis, strike the lens, and converge to a single point on the opposite side of the lens (they pass through 2 surfaces) Oct 28­9:58 AM Diverging Lenses rays that are parallel to the principal axis and diverge away from the focal point after they pass through the lens Oct 28­10:04 AM 1

  2. Converging Lenses Biconvex lens Planoconvex lens Positive meniscus lens Oct 28­9:56 AM Diverging Lenses Biconcave lens Planoconcave lens Negative meniscus lens Oct 28­9:56 AM Do handout: p 98, section 4.1 different types of lenses Nov 7­6:41 AM 2

  3. 4.2 Refraction in lenses: What will happen when light passes through a prism? Draw a diagram Nov 7­6:42 AM Nov 7­6:44 AM Nov 7­6:45 AM 3

  4. Would you agree that the light would behave in a similar way with the biconvex lens? Nov 7­6:45 AM F O F' Lines parallel to P will converge at F Nov 7­8:27 AM (not to scale) F O F' f if the rays are not coming parallel to P, they will converge on the focal plane at another point Nov 7­8:27 AM 4

  5. Terminology focal plane F O F' f O F F' f Focal plane Nov 7­6:52 AM focal plane Terminology F O F' f O Optical centre = geometric centre F Principal focal point: incident rays parallel to C will converge F' Secondary focal point: symmetrical to F in relation to O f focal length distance of OF (and OF') Focal plane perpendicular to P, passes through F, where the incident rays will converge Nov 7­6:52 AM Terminology focal plane F O F' f O Optical centre = geometric centre F Principal focal point: incident rays parallel to C will converge Nov 7­6:52 AM 5

  6. Principal Rays of converging lenses = symbol for converging lenses Nov 7­6:50 AM F O F' f First principal ray Nov 7­7:39 AM F O F' f Second principal ray Nov 7­7:39 AM 6

  7. F O F' f Third principal ray Nov 7­7:39 AM F O F' f Three principal rays of a converging lens Nov 7­7:39 AM Diverging lens = Nov 7­7:55 AM 7

  8. Predict the path of light rays hint # 1 Pull Pull hint # 2 Pull Pull Nov 7­7:58 AM F O F' f Nov 7­8:20 AM Diverging mirror F O F' f First principal ray Nov 7­7:56 AM 8

  9. Diverging mirror F O F' f Second principal ray Nov 7­7:56 AM Diverging mirror F O F' f Third principal ray Nov 7­7:56 AM Text book page 105 Nov 7­8:22 AM 9

  10. Nov 7­8:19 AM 10

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