Fig. 1. Proto Progress
Though hard to see in this photo, there is a clear mylar film over the reflective film forming an air-tight plenum to create a controlled focus at very low cost.
M O KENERGYP o w e r f r o m t h e C l e a r B l u e S k y
C O R P O R A T I O N
1000 Titus Road, Springfield OH 45501