© 2018 Tin Model LLC. All rights reserved. 
Case 12: Concave Lens in Dome Coater

In the same model dome coater as in Case 11, we now compute for the thickness distribution on a spherical and concave lens surface situated in the same location. The concave surface has the same physical dimensions: 7 cm in diameter; its radius of curvature is -8 cm. 

      First we place the concave surface tangential to the dome surface. The resultant thickness distribution is highly nonuniform and asymmetric, shown in the left column of the figure below. Pivoting the surface by 13.4 degrees, the thickness distribution becomes more uniform and symmetric, as shown in the right column. The overall peak-to-valley nonuniformity before and after pivoting is 10.6% and 4.4%, respectively. 
Tangential to dome
Pivoted from dome
maximum=97.80; minimum=79.07
maximum=97.70; minimum=89.48
Get the Most out 
of Your Coaters
Hardware requirements
Request a Free Trial
Case Studies with 
V-Grade 5 &
V-Grade 5S