The principal applications of off-axis optical systems are to avoid obstruction of the primary aperture by secondary optical elements, instrument packages, or sensors, and to provide ready access to instrument packages or sensors at the focus. The engineering tradeoff of an off-axis optical system is an increase in image aberrations.
Source: From Federal Standard 1037C
The Big Three: tests manufacturers need to know: product testing is a critical component in the development of a medical device. But how many engineers truly understand the importance of what are arguably the three most crucial tests for a medical device? This article reviews these three tests-cytotoxicity, sensitization, and irritation-and offers some insight that will ideally make them go more smoothly for engineers.(Testing)
Jul 01, 2010; Of all the tests manufacturers need to be prepared to conduct on their medical devices, none are more important than the Big...