3D Printable Portable Slit Lamp

After making the design changes I have done the first test of Slit Lamp.

After the procurement of the Head Strap, I have made some changes in the designs of positioning link, chin rest link and light source adjusting link.

Because after printing the previous designs of mount parts, I found out that the links are little longer due to that light intensity is reducing while reaching to the eye.

Updated Design Render:

We have printed the different components of the design in PLA using the Fracktal Works "JULIA" 3D printer.

We are using a 4W LED as a light source. LED works as a point source because of that light disperse in all the directions. But we need a slit of colimating light.

So we have designed the optics for the slit lamp apparatus using a optics software. We have run some simulation by putting different focal length lenses in between the light source and the slit dial.

Finally we got desired simulation results by using two 45 mm focal length lenses.

Problem definition for the simulation:

Final simulation results with 45 mm focal length lenses: