Dec 25, 2022 18:00:00

What kind of pictures can be taken by DIY a laser scanning microscope with a Blu-ray player?

A

laser scanning microscope can see things smaller than an optical microscope using a laser, but it can cost millions of yen to get a proper one. Doctor Volt, who produces many videos for remodeling electronic devices, explained how to substitute such a laser scanning microscope with a commercially available Blu-ray player.

DIY Blu-Ray Laser Scanning Microscope Part 2: Shooting Images-YouTube


Volt says that the Blu-ray player is basically the same as a laser scanning microscope, and the necessary equipment can be borrowed from the Blu-ray player.

The most important part is called the optical pickup unit (OPU).

OPU outputs various lights for reading CDs, DVDs and Blu-rays. Light is converged through multiple lenses and mirrors and directed onto the disc. By directing this light toward the object being photographed, it can be used like a microscope.

First of all, we need a foundation for proper OPU operation.

Therefore, Mr. Volt decided to design parts using FreeCAD, a 3D CAD modeler.

Upload the data to JLCPCB, a 3D printing service, and request the creation of the actual product.

A few days later, the real thing arrived.

There were two parts designed by Mr. Volt.

Next, we will start the work of attaching parts to the parts collected from the Blu-ray player and OPU.

First, install the parts that will be the base of the slider that moves the OPU.

We will also make a base to attach the OPU itself.

Complete by superimposing both. It has a simple structure.

You can adjust the distance between the OPU and the object to be shot with the nuts at the four corners.

Create a circuit.

Start shooting. The first thing to shoot is a thin piece of cloth. Place the coverslip on the cloth.

And start shooting. The slider moves in small increments.

The cloth taken with the maximum scan speed looks like this. It's a little grainy, so I'll try again with the lowest scan speed.

The image gradually changes from the top. By shooting at both maximum and minimum speeds, the number of samples increases, noise is averaged out, and beautiful pictures can be taken.

This is a copy paper taken by Mr. Volt

record groove.

Mr. Volt has released the CAD drawings and circuit diagrams created this time.

Laser Scanning Microscope From Blu-Ray Player - Hackster.io
https://www.hackster.io/michalin70/laser-scanning-microscope-from-blu-ray-player-856f06