Turbulence simulator

$10,000.00

SKU: Turbulence simulator 分类: ,
Brand:OEfind
描述

描述

Turbulence simulator

Lexitek’s turbulent phase plates are primarily used in adaptive optics (AO) systems engineering. Because wavefront sensors and deformable mirrors have a high degree of freedom, wavefront aberrations are the main ones that affect most system performance, especially for atmospheric propagation. The most accurate way to design, test, and validate the performance of AO systems is to use well-characterized wavefront aberration instrumentation in the laboratory. Lexitek’s Near-Index-Match™ pseudo-random phase board provides AO system engineers with such a tool. Multiphase plates with different intensities can simulate the distribution of turbulent spheres, each with random variations.

Turbulent phase plates

Typical parameters

  • Continuous surface of BK7 material
  • Φ100mm, effective area 83mm
  • 22 mm thickness
  • 4096×4096 phase array
  • ~20μm phase grid
  • λ/10 outer surface
  • Broadband AR coating < 0.6% reflection
  • 15 arc seconds parallelism, maximum 30 arc seconds
  • The OPD step size is 0.02μm and the accuracy is 0.09μm
  • OPD ranges from 5-30μm
specification

  • The transmission distance is 400-1600 nm
  • Max 300x150mm
  • Continuous phase surface ball end mill machining
  • Flat end mills machine discontinuous phases
  • Surface height 1.2mm, accurate 5mm
  • Δn ranges from 0.01 to 0.05
  • Phases specified by the customer or by Lexitek numerical arrays designed to your specifications

Turbulence simulator

Lexitek’s turbulent phase plates are primarily used in adaptive optics (AO) systems engineering. Because wavefront sensors and deformable mirrors have a high degree of freedom, wavefront aberrations are the main ones that affect most system performance, especially for atmospheric propagation. The most accurate way to design, test, and validate the performance of AO systems is to use well-characterized wavefront aberration instrumentation in the laboratory. Lexitek’s Near-Index-Match™ pseudo-random phase board provides AO system engineers with such a tool. Multiphase plates with different intensities can simulate the distribution of turbulent spheres, each with random variations.

Phase plates are made from a layer of CNC machined acrylic and optical polymer. The design optical path difference (OPD) of the surface processing is scaled by 1/δn. Optical windows with AR coatings are often bonded to the interlayer to improve surface quality and parallelism.

Electric rotary table

 
Model Number of motor steps Gear ratio Motor torque
oz-in
Motor size Speed
(rpm)
Maximum speed
(rpm)
itinerary weight Maximum part size Clear aperture Microstep Full Step
Rev
Maximum
Rev
HS-100 200 January 1970, 1 83 Nema 17 300 >400 360° 5.5 4″ 3.75″ 1, 2, 4, 8 600 4800
LS-100 400 January 1970, 1 4 Nema 14 10 >40 360° 3.5 4″ 3.75″ 1, 2, 4, 8 1200 19200
LS-100-SU 200 January 1970, 1 45 Nema 17 100 >200 360° 4.5 4″ 3.75″ 1, 2, 4, 8 2400 9600
LS-50 400 January 1970, 1 16 Nema 17 100 >200 360° 2.5 2″ 1.75″ 1, 2, 4, 8 1600 12800

Lexitek offers the most affordable motorized rotary platform to introduce time variation, with a large clear aperture. Available in a variety of sizes and speeds. The platform is usually driven by a stepper motor, but servo motors can also be configured. A variety of controllers (e.g. from Arcus) are available, equipped with all the necessary cables for interoperability. These platforms are designed to hold large optical components, but can also be used for test and inspection applications for a variety of systems with large optical apertures.

We offer LS-4 and HS-100 platforms for 100″ / 100 mm optics and LS-2 for 50″ / 50 mm optics.

1D control table

ACE-SXEspecificationTurbulence simulator

  • 6M maximum pulse rate output
  • Encoder feedback support
  • Analog joystick control
  • USB 2.0 and RS-485 (9600-115K bps) communication
  • Modbus RTU support
  • Digital IO communication + easy-to-use interface
  • Independent control via a programming language similar to BASIC
  • 12 to 48 VDC voltage input
  • Opto-isolation + limit-limit and main input
  • Opto-isolated digital inputs
  • Opto-isolated digital output
Brand

Brand

OEfind