Lenses Topic 13.4.

Slides:

Advertisements

Similar presentations

Mirror and Lens Properties. Image Properties/Characteristics Image Type: Real or Virtual Image Orientation: Erect or Inverted Image Size: Smaller, Larger,

Advertisements

Created by Stephanie Ingle Kingwood High School

Lenses. Transparent material is capable of causing parallel rays to either converge or diverge depending upon its shape.

Light and Optics Mirrors and Lenses. Types of Mirrors Concave mirrors – curve inward and may produce real or virtual images. Convex mirrors – curve outward.

Convex and Concave Lenses

Curved Mirrors. Two types of curved mirrors 1. Concave mirrors – inwardly curved inner surface that converges incoming light rays. 2. Convex Mirrors –

Convex Mirrors LG: I can describe the uses on convex mirrors and draw ray diagrams involving convex mirrors.

Convex Lens A convex lens curves outward; it has a thick center and thinner edges.

Geometric Optics This chapter covers how images form when light bounces off mirrors and refracts through lenses. There are two different kinds of images:

Curved Lenses SNC2P – Optics. Lenses Lenses are thin pieces of glass or plastic that have at least one curved side. There are two basic types of lenses:

Predicting Images in Convex and Concave Lenses. When the object is located at twice the focal length (2F)

Lesson 3.  describe, quantitatively, the phenomena of reflection  use ray diagrams to describe an image formed by thin lenses and curved mirrors.

Its now time to see the light…..  A lens is a curved transparent material that is smooth and regularly shaped so that when light strikes it, the light.

Ray Diagrams for Lenses. Convex (Converging) Lenses There are two Focal points One in Front and one Behind Focal point is ½ way between Center of Curvature.

Converging Lenses Section 4.6 Lesson 13. Lenses A lens is a thin transparent piece of glass or plastic that has at least one curved side –The sides can.

Chapter 18 Mirrors and Lenses. Curved Mirrors Concave shaped mirrors cause parallel light rays to converge. Convex shaped mirrors cause parallel light.

Reflection & Mirrors Topic 13.3 (3 part lesson).

Reflection from Flat Surfaces

Spherical Mirrors A spherical mirror has the shape of a section of a sphere The mirror focuses incoming parallel rays to a point (focal point) A concave.

Lenses – An application of refraction

Physics 2102 Jonathan Dowling Lecture 37: MON 20 APR Optics: Images.

2 types of lenses just like mirrors

Lenses and Mirrors Working with Ray Diagrams.

Mirror Equations Lesson 4.

Refraction and Lenses AP Physics B.

8. Thin lenses 1) Types of lenses

Lenses and Ray Diagrams

06 – Concave or Converging Mirrors

Image Characteristics

13.4 The Lens Equation.

Thin Lenses 1/p + 1/q = 1/f 1/f = (n -1) (1/R1 - 1/R2)

Lenses and Ray Diagrams

Lenses © 2007.

What Happens When… Light is transmitted through a glass shaped like a triangle? Light is transmitted straight toward a glass shaped like a square?

Thin Lenses-Intro Notes

Reflections in Mirrors

Chapter 7 Light and Geometric Optics

Converging Lenses Section 4.6 Lesson 13.

Curved lenses 13.1, 13.3 SNC 2D1 Mr. Dvorsky.

Lenses and Ray Diagrams.

Refraction at Spherical Surfaces.

4.4 Concave and Convex Mirrors

14-2 Thin lenses.

Thin Lenses A lens is a transparent object with two refracting surfaces whose central axes coincide. The common central axis is the central axis of the.

Lenses and Image.

Lenses Lesson 10.

Unit 8, Lesson 7 Convex Lenses.

8. Thin lenses 1) Types of lenses

Part 3: Optics (Lenses and Mirrors)

Images Formed by Lenses

LENSES A lens is defined as - A ground or molded piece of glass, plastic, or other transparent material with opposite surfaces either or both of which.

Optics 1 And you.

Chapter 13 Light and Reflection

Lenses A lens is a transparent material (with at least one curved side) that causes light refracts in a predictable and useful way. Each ray is refracted.

Chapter 8 Ray Diagrams (光線圖)

Optics Mirrors and Lenses.

Lenses: Day 1 -Converging Lenses

Lenses 2: DIVERGING LENSES

Lenses Physics Mr. Berman.

Image Formation In order to form a coherent image, the eye, or some optical device, must focus or converge at least two light rays reflecting off of the.

Thin Lens Equation 1

Lens Equation Word Problems

Presentation transcript:

Lenses Topic 13.4

Outcomes You will use ray diagrams to describe an image formed by thin lenses and curved mirrors. You will describe, quantitatively, simple optical systems, consisting of only one component, for both lenses and curved mirrors.

Lens Terminology All the terms from the mirror section also apply to lenses, however instead of a centre of curvature there is an optical centre. Optical Centre: The center of the lens. The principal axis passes through this point

Comparing Lenses to Mirrors Light can travel either direction through the lens, there is a focal point on both sides of the lens. Convex lenses have a real focal point (aka converging lenses) Concave lenses have a virtual focal point (aka diverging lenses) Focal length is dependent on the type of material the lens is made of – the smaller the index of refraction the greater the focal length

Converging lenses have a positive focal length. VIRTUAL FOCAL POINT! REAL FOCAL POINT! Converging lenses have a positive focal length. Diverging lenses have a negative focal length.

Drawing Ray Diagrams Steps: 1. Draw the lens showing the principle axis and both principal focal points 2. Place a vertical arrow on the principal axis to illustrate the position and size of the object. 3. Draw two rays from the tip of the object arrow to the lens. The first ray is drawn from the tip of the object parallel to the principal axis and will refract through (or appear to diverge from) the principal focal point. The second ray is drawn from the tip of the object arrow straight through the optical center of the lens

Calculating Lens Characteristics The same equations and principles are as those for mirrors

IMPORTANT RULES *Note: Converging lenses have a positive focal length. Diverging lenses have a negative focal length. *Note: All real images are inverted and all virtual images are erect Do and ho are always +

Sample Problem A 25 cm tall object is placed 40 cm from a convex lens of focal length 50 cm. Calculate di, magnification, and hi.

Homework Drawing Lens Diagrams Handout Calculation Qs: p. 116 #2-12