Digital Eyepiece for Microscope DIY

During my school years I really liked to look at different objects under a microscope. Anything from the inside of the transistor to various insects. And so, recently I decided to indulge in a microscope again, subjecting it to minor alterations. That's what came out of it:


Under the microscope - KS573RF2 chip (ROM with UV erasing). Once on it was recorded a test program for the Spectrum.

What i had

An old MBS-1 microscope with a warm lamp illumination, which I later remade to LED .
The webcam of the famous Chinese company Noname, which neither Win7, MacOSX, nor Ubuntu did not want to recognize (although there was a driver for XP).
')

What did you want

I wanted to be able to share with others what is visible through the eyepiece of the microscope.

If you try to solve the problem "in the forehead" - to put the camera on the eyepiece of the microscope, then nothing good will come of it: it is very difficult to find a point where at least something is visible, the camera is constantly trying to adjust the exposure, the visible area is very small (in the video with The first version of the eyepiece shows this). So I decided to go the other way.

A bit of theory

An image that sees the human eye in geometric optics is called an imaginary image, and an image that can be projected onto a screen is called a real image.
The camera perceives the imaginary image, converts it into real with the help of the lens and projects it onto the matrix.
As my experiments showed, in a microscope everything is the other way round: the image before the eyepiece is real (since by inserting a sheet of paper I saw what was under the microscope), and after the eyepiece it is imaginary (because it is visible with the eye).
Therefore, if the lens is removed from the camera and the eyepiece is removed from the microscope, the image will immediately be projected onto the webcam's matrix.
More detail about the geometrical optics - here .

From theory to practice

I disassemble the camera:




I take off the lens:




First test:

To make a thing eternal - you need to rewind it with a blue electrical tape ...

I make a tube that will be inserted into the microscope in place of the eyepiece:



The tube is slightly smaller in diameter than necessary, so one end had to be “expanded” slightly.

Fix the tube with hot glue on the camera without a lens:






I insert instead of one of the eyepieces:




Done!


Below are a few videos that came out with this lens:


Eye of a fly


eInk screen from PocketBook 301+


Retina screen from ipod


Screen Nokia 6021


CD surface

PS: stumbled upon an article in which there is a link how to make a similar thing. Also, you can make a microscope from a webcam .