At first, I used a USB microscope to capture images on a PC. This method was good because it was easy to use and had a wide field of view, but I was still concerned about the image flow due to lens aberration at the periphery of the image, not to mention the center. It seems that the optical system of the microscope was not so well designed. After that, several combinations of microscopes and CCDs were tried, but they did not improve the results, and I finally settled on the following method.

1.LaowaマクロレンズとEOSM＋76mm顕微鏡用架台

　そんな経緯のあと．たどり着いたのはこの組み合わせ．
中国製Laowaマクロレンズ　LAOWA 25mm F2.8 2.5-5X ULTRA MACRO

旧式ミラーレスCanon EOSM　http://gdlp01.c-wss.com/gds/7/0300008787/01/eosm-im-ja.pdf

顕微鏡にするための架台　

さらに架台に取り付けるパーツの製作

厚いアルミ廃材を加工してレンズアダプタを作る．まず穴あけ． A lens adapter is made from a thick aluminum block. First, drill the holes.	次に内部の取り除き．Next, remove the inside.
さらに卓上旋盤によるレンズが挿入される内側の加工．Further machining of the inside where the lens is inserted using a bench-top lathe.	さらに顕微鏡架台に乗せる外側の加工．The outside of the lens is processed to be placed on the microscope stand.
レンズに装着したところ．左がフォーカシング架台． Attached to the lens. Focusing mount on the left.	以前に作っていた3Dプリンタによるアダプタ．An adapter previously made by 3D printer.
EOSMに装着したレンズにアダプタをかぶせたところ． A lens mounted on EOSM with the adapter over it.	完成したアダプタとカメラおよび架台．The completed adapter, camera and stand.
こちらは架台底面にはめ込んだ自作白色LED照明．This is a home-made white LED light inserted in the bottom of the bench base.	自作照明を上から見た図．LEDまわりの回路は下記を参考に．The circuit around the LED is shown below. http://yossi-okamoto.net/Seagull_Factory/Olympus/Olympus_index.html