1. Optical Convex lens: A lens which is large in its center and thin around the edges. It exhibits an effect of converging light, hence it is often referred to as a converging lens.

2. Cone lens A lens that has a thin center and a narrow edge, that can disperse light rays. Therefore, it is sometimes referred to as dispersing lens.

3. The Optical Lens Center. The center of the lens. the light that passes through it’s optical center is not dispersed.

4. The main optical axis is The imaginary line that creates symmetry across its optical center.

5. Light rays that are parallel to the optical axis of principal through the lens be able to converge on the opposite side of the focal point, this is known as the focal point. Convex lenses feature two symmetrical focal points.

6. Focal length is The distance between the focal point and the light’s center, convex lens has two focal lengths. are the same.

7. Camera’s image characteristics The camera lens is a convex lens. It transforms which transforms into a reduced, inverse solid image.

8. Image projection characteristics: Projector lens that converts the convex lens. It transforms into a magnified and turned solid.

9. magnifying glass’s image properties: magnifying glass is an convex lens that transforms transformed into a magnified and or orthogonal digital image (conditions that the distance of an object is lower than its lens’ focal length).

10.

Imaging with a convex lens:

(1) The object that extends beyond the twofold length of focal (u>2f) Forms an inverted, reduced solid picture (image distance (image distance): (f)

(2) (2) Objects that fall that fall between the twofold length of focal (f

(3) (3) The object is within the focal distance and creates an orthogonal magnified image. E.g. magnifying glass.

11. Method for learning the law of image of a convex-shaped lens:

“double your focal length” of both the imaginary and real twice the size of the focal length the object’s real image in the same direction and distance to object fixed size. Into a positive, magnified virtual image.

12. The human eye functions as an optical camera. The lens functions as a camera’s lens (convex lens) The retina is similar to the film inside the camera.

13. Myopic eyes cannot see distant objects so they require concave lenses. Nearsighted eyes cannot be able to see the scene in front of them and require convex lenses.

14. myopia Hyperopia images and treatment: “near front and far back near concave and convex to the far.”

15. telescopes can create distant objects visible in the image. Galileo eyepiece for telescope is concave-shaped lens. and the lens that is used for objective purposes, is a cone; Kepler telescope eyepiece objective lens is a convex lens (objective focal length of lens, eyepiece focal length is shorter).

16. The objective and eyepiece of a microscope also are convex lens (short focus length for the objective, and longer focal length for the eyepiece). Make an upward-facing, magnified digital image. Example magnifying glass.