High Speed Optical Wavefront Sensing with Low Cost FPGAs

نویسندگان

  • K. Kepa
  • D. Coburn
  • J. C. Dainty
  • F. Morgan
چکیده

87 High Speed Optical Wavefront Sensing with Low Cost FPGAs K. Kepa 2 , D. Coburn, J. C. Dainty, F. Morgan Applied Optics Group, School of Physics, Dept. of Electronic Engineering, 1, National University of Ireland, Galway, University Rd., Galway, Ireland Institute of Computer Engineering Control and Robotics, Wroclaw University of Technology, Poland [email protected], {derek.coburn, c.dainty, fearghal.morgan}@nuigalway.ie

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Compressed wavefront sensing.

We report on an algorithm for fast wavefront sensing that incorporates sparse representation for the first time in practice. The partial derivatives of optical wavefronts were sampled sparsely with a Shack-Hartman wavefront sensor (SHWFS) by randomly subsampling the original SHWFS data to as little as 5%. Reconstruction was performed by a sparse representation algorithm that utilized the Zernik...

متن کامل

A Low Cost Sensorless Control Drive Circuit for of Low Voltage Switched Reluctance Motor

Shaft position sensing is an essential part of switched reluctance (SR) motor drive In order to synchronize the pulses of phase current with the period of rising inductance of the proper motor phase. Direct sensors such as, Hall effect and optical encoder are commonly used in SR motors. The purpose of this paper is to present an indirect shaft positioning sensing known as "sensorless " control ...

متن کامل

Wavefront sensing and guiding units for the Large Binocular Telescope

The Large Binocular Telescope (LBT) will see first light with a single primary mirror in January 2003. It will be equipped with fully adaptive secondary mirrors from the beginning as well as a complete on-axis wavefront sensing and tip-tilt guiding system. Here we present the preliminary design of the Acquisition, Guiding, and Wavefront sensing system for the LBT. The system is divided in an of...

متن کامل

Adaptive optical two-photon microscopy using autofluorescent guide stars.

We demonstrate a fast, direct wavefront-sensing method for dynamic in vivo adaptive optical two-photon microscopy. By using a Shack-Hartmann wavefront sensor and open-loop control, the system provides high-speed wavefront measurement and correction. To measure the wavefront in the middle of a Drosophila embryo at early stages, autofluorescence from endogenous fluorophores in the yolk were used ...

متن کامل

Wavefront sensing for WFIRST with a linear optical model

In this paper we develop methods to use a linear optical model to capture the field dependence of wavefront aberrations in a nonlinear optimization-based phase retrieval algorithm for image-based wavefront sensing. The linear optical model is generated from a ray trace model of the system and allows the system state to be described in terms of mechanical alignment parameters rather than wavefro...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2010