I am interested in using a DLP as an optical mask. The mirror would be placed in a pupil plane, and would select some part of it, effectively "blocking" the others (the light being reflected in a different direction).The typical surface flatness of a good mirror is a fraction of a wavelength (ideally lambda/20 or better, for a wavelength of 635nm). We know from experience that it is difficult to manufacture a MEMS mirror with really high surface quality, but lambda/4 could be a realistic value.Our group is working on high-contrast and high-resolution imaging techniques in astronomy, in particular exoplanet direct imaging. The DLP would be used to modify the instrument's diffraction pattern.A previous post on this forum (in 2011) indicated that TI did not measure the flatness of its mirrors. Moreover, other astronomers seem to have tried and measured it, finding a surface quality as large as 10 lambda. I would like to know if TI has made some progress in this direction, either by measuring the surface flatness of their mirror, or even better, by improving it.Would it be possible for us to work with a sample, and test its optical properties before actually buying it ?Finally, we are considering applying to a NASA research grant to develop these types of technologies. Would TI be interested in being associated to it ?
Thank you,Alexis Carlotti
Welcome to the DLP section of the TI-E2E Community.
I believe you are refering to this post:
I would like to find out a little more about your system and needs. If you are not comfortable sharing them in an open forum please send me a friend invitiation.
Thank you for your friend request and information regarding your system. We can continue our discussion in a friend conversation.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.