Particle size in polarizing filters

In summary, particle size in polarizing filters refers to the size of the individual particles or crystals that make up the filter material. It plays a crucial role in determining the filter's performance, with smaller particles resulting in higher quality filters and larger particles potentially decreasing effectiveness. Particle size can be adjusted by changing the manufacturing process or material used, and the ideal size varies depending on the intended use. The cost of polarizing filters can also be affected by particle size, with smaller particles generally leading to more expensive filters.
  • #1
RogerInHawaii
3
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I know that light can be polarized by passing through a medium that has linear particles all oriented in the same direction. But what size particles are necessary to do that?
 
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  • #2
I couldn't find information about the size of of herapathite molecules (used in polarizer film), but infrared polarizers often consist of wires spaced apart around 1/4 the wavelength:

http://www.specac.com/products/infrared-polarizer/wire-grid-infrared-polarizer/654
http://www.internationalcrystal.net/icl59a.htm
 
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FAQ: Particle size in polarizing filters

1. What is particle size in polarizing filters?

Particle size in polarizing filters refers to the size of the individual particles or crystals that make up the filter material. These particles are responsible for blocking certain wavelengths of light and allowing only polarized light to pass through.

2. How does particle size affect the performance of polarizing filters?

The particle size in polarizing filters plays a crucial role in determining the filter's performance. Smaller particles allow for a higher degree of polarization and better light blocking, resulting in a higher quality filter. Larger particles may result in lower polarization and a decrease in the filter's effectiveness.

3. Can particle size be adjusted in polarizing filters?

Yes, particle size can be adjusted in polarizing filters by changing the manufacturing process or the type of material used. Different materials have different particle sizes, so choosing the right material is important for achieving the desired level of polarization and performance.

4. What is the ideal particle size for polarizing filters?

The ideal particle size for polarizing filters varies depending on the intended use. In general, smaller particle sizes are preferred for high-quality filters used in photography and scientific research. However, larger particle sizes may be suitable for filters used in everyday applications such as sunglasses.

5. How does particle size affect the cost of polarizing filters?

The particle size in polarizing filters can have an impact on the cost. Smaller particle sizes typically result in higher quality and more expensive filters, while larger particle sizes may be more affordable. The cost also depends on other factors such as the manufacturing process and type of material used.

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