To overcome thermal distortion and spherical abberation issues of high-power ZnSe optics, a new approach to transmissive-optics design uses two optics in an "air-spaced doublet" arrangement to remove heat axially.
Turbulent-cooling gas, injected at high flow rates in the space between the two optics, reduces the optics absolute temperature. Because the axial-thermal path is shorter, the design efficiently lowers both the internal "lifetime-reducing" stress, and the hoop stress at the edge. A reduced radial thermal gradient virtually eliminates temperature-induced spherical aberration.
With these improvements using the Turbo-Cooled(reg) Optical Assemblies, and infrared window material--ZnSe in particular, but also CdTe, GaAs, and ZnS--withstand much higher power levels than a single optic, while still providing diffraction-limited performance.
Frank Foote, Laser Power Optics, 12777 High Bluff Drive, San Diego, CA 92130, PHONE (800) 262-5273.
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
Robots that walk have come a long way from simple barebones walking machines or pairs of legs without an upper body and head. Much of the research these days focuses on making more humanoid robots. But they are not all created equal.
The IEEE Computer Society has named the top 10 trends for 2014. You can expect the convergence of cloud computing and mobile devices, advances in health care data and devices, as well as privacy issues in social media to make the headlines. And 3D printing came out of nowhere to make a big splash.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.