Responding to the increasing competition
in optics manufacturing.
The fabrication of optics relies on the determinism of computer controlled manufacturing and the elimination of errors such as thermal dimensional variations.
It has long been known that thermal variation is the largest source of error in all areas of high precision manufacturing. Reducing thermal variation not only improves accuracy, but the reduction in error provides greater latitude in managing an error budget.
Increase the precision of optics manufacturing.
The Praecis Air Temperature Control Unit (ATCU) can control the temperature at a Critical Point up to ± 0.004 ºC.
Even with a temperature variation of 0.1 ºC significant errors will occur. However, by maintaining the temperature variation to ± 0.01 ºC, a typical precision instrument will improve its accuracy by more than ten times.
Precision temperature control at the Critical Point increases accuracy and profitability.
Praecis ATCU-5
Diamond turning machine spindle displacement resulting from ambient temperature variation.
The graph above shows displacement of a diamond turning spindle at room temperature over 2.5 hrs. There is a 7.5 μm (p-v) axial displacement resulting from a 0.4ºC (p-v) variation in ambient temperature. By applying temperature control, the displacement is reduced to less than 0.5 μm (p-v).
Even though an ambient fluctuation of approximately 0.5 ºC is typical, a spindle displacement of 7.5 μm is unacceptable for most diamond turning applications.
Dual Optics System
Small Optics Environment
Large Optics System