This section has some examples to use with conical mirrors
In order to use these templates, you will need a copy of the Adobe Acrobat reader. You can download a copy from the Adobe Website .
How to Make a Conical Mirror
To view the conical mirror examples you need to make a mirror using a piece of aluminium coated thin plastic sheet. The examples have been created with a mirror having an angle of 60 degrees. As with the anamorphosis for putting an image on a cone, the cone is constructed from a sector of a circle.
From the downloads below, print out the conical mirror template and cut it out. Stick it to the reverse of the mirror sheet with a small dab from a glue stick and then cut round the edge.
With a craft knife cut the slit and then remove the template. Roll up the mirror into a cone, putting the tab into the slit and hold it in place by using a small piece of sticky tape inside the cone. Depending on the stiffness of the plastic, you may need to work on the cone to make it circular.
The slit acts both as a locator for the tab and as an indicator for the position of the 180 degree sector for the mirror. When you have a suitable cone, place it on the circle in the printouts of the conical mirror examples and look directly above the apex.
It is hard to get a perfect conical mirror using this method. The image tends to be slightly distorted around the apex of the mirror, but it does show the principles.
Undistorted original images ……….. Click here to download
Conical mirror template ………… Click here to download
An 11 x 11 grid …………. Click to here download
An image of Socrates ……….. Click here to download
Yin and Yang ………… Click here to download
The MathsYear2000 logo ………… Click here to download
Images copyright © 1999-2010 by John Sharp. You may use the templates for your own use and for teaching purposes, but not for commercial purposes.