Day 15
Ronny and I worked today on calculating the correct distance to place the CCD camera within the setup for the femtosecond laser. We initially investigated image formation in a camera as the system used to form an image of the silicon surface on the CCD is very similar to the way a lens transforms light to form an image on the sensor of a DSLR. We were able to determine that a system of equations that both incorporated the distance from the object to the lens and the distance form the lens to the image (CCD) could be solved by inputting the desired size of the image (size of the CCD sensor) and the known size of the object being imaged. I was able to write a simple program in MATLAB utilizing its ability to solve systems equations in order to automate the process of determining these distances. We later constructed a basic system using a fiber light and a convex lens to verify our calculations of the distance from the lens to the image plane.
Although it is difficult to see in the image above, when the paper is placed at the correct distance from the lens, the light resolves to form an image of the interior glass structure of the fiber light.
Tomorrow I may be assisting Titus in data collection for his project by participating in an eye-tracking experiment. He originally planned the experiment for today but due to technical difficulties with the glasses used to record motion of the eye it was postponed; hopefully he is able to repair them as I'm excited to help out with his project.
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