Schlieren

• 详细介绍
• 详细参数

• 详细介绍

  Overview

  Imaging example

  Hair dryer hot teapot hot teapot and heater

  Schlieren imaging technology is a popular technology that can visualize transparent media such as air and water.

  These deformations can be synthesized with important physical parameters such as temperature, density, pressure, etc., so the schlieren effect

  It can be used to create heat flow, air currents, shock waves, strong images and sounds, and many other phenomena that are vital in science and engineering.

  
  

  Schlieren was developed in the 19th century and relied on passing light through a sharp cut-off filter to form an image.

  It is arranged so that the ray intensity has a steep derivative along the edge of the filter. This arrangement makes the deviation of the light path small,

  Produces a large change in grayscale from a non-shifted horizontal image.

  
  

  
  

  
  

  Although traditional schlieren systems use optical collimation, such as mirrors or lenses, this effectively limits the light.

  
  

  
  

  The area tested is related to the size of the optics, making this technique very difficult and expensive to use.

  
  

  
  

  Different from the traditional schlieren system, our digital focus schlieren system is portable and self-aligning,

  No need for expensive cost and complicated installation requirements for schlieren imaging

  The observation area is about half of the projected area, so it is 12 feet (4 meters) diagonal

  The projection can give an area with a diagonal of 6 feet (2 meters)

  
  

  
  

  working principle

  
  

  The portable projection schlieren system of American spectabit is based on our patented digital focus schlieren technology (US patent 9232117 B2).

  It uses a digital projector to project line pattern objects behind the screen. The screen light is reflected back to the stubetm optical system,

  It passes through the cut-off filter before reaching the camera sensor. The camera focuses on the schlieren object (e.g. heat flow),

  Instead of the screen or cut-off filter, the depth of field is too shallow, and the screen mode is basically completely defocused.

  In the absence of a density gradient, light flows directly from the screen to the cutoff point.

  
  

  
  

  Filter, it can block about half of the light.

  Advanced image processing algorithms included

  schlierenviewtm software is used to remove background noise,

  Improve the contrast and ensure uniform intensity in a background.

  The flow of cold air, gas vapor and shock waves form areas of different densities, thereby bending the light,

  So the line pattern projected on the background screen is distorted. Distortion changes the amount of light passing through.

  Pass the cut-off filter of the image sensor. In the resulting image, the appearance of airflow and shock waves is very obvious.

  Focused light and dark objects etched against a gray background.

  This system is very sensitive and you can see the warm air rising from the outstretched palm

  The video rate of the standard system is applied to 1920 1080 HD resolution,

  For high-speed and specialized solutions. Either portrait orientation (long dimension vertical)

  Or landscape direction (long dimension level) can be used (please specify when ordering).

  The best result is to project onto a flat white background, such as a white wall.

  Traditional projection screens can improve image quality, but do not require high levels of background light.

  Present (such as sunlight or direct sunlight).

  The range can be tested to 30 feet (10 meters), but a greater distance. Can be used under low background light

  The standard lens has a focal length of 85 mm, but different F-mount lenses can be used to optimize systems with different working distances and fields of view.

  Feel free to contact us to inquire about the impact of various information on system performance; long focal length lenses generally provide higher sensitivity, but reduce the magnetic field.

  
  

  
  

  The more sensitive version of the system is based on a short-term Pro optical system and a fixed focal length lens.

  
  

  
  

  Although traditional schlieren systems use optical collimation, such as mirrors or lenses, this effectively limits the light.

  
  

  
  

  The area tested is related to the size of the optics, making this technique very difficult and expensive to use.

  
  

  
  

  Different from the traditional schlieren system, our digital focus schlieren system is portable and self-aligning,

  No need for expensive cost and complicated installation requirements for schlieren imaging

  The observation area is about half of the projected area, so it is 12 feet (4 meters) diagonal

  The projection can give an area with a diagonal of 6 feet (2 meters)

  
  

• 详细参数

• 产品特色

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• 详细介绍

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  AutoCal系统-Dynalog的先进水平校准技术，Dynalog是机器人单元标定技术的世界领导者。它的主流产品DynaCal 系统，被应用于离线的机器人单元校准，并作为最精确的和技术先进的机器人校准程序为许多机器人制造商和终端使用者所接受。AutoCal 系统将已证实的DynaCal校准技术结合到一个在线的全自动系统中，该系统专为程序控制和复原而设计的，价格低廉。