| Quartz Crystal Optical Characteristics |
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| Besides piezoelectric properties, quartz also has optical properties, notably, outstanding permeability, polarization and rotation over a wide range of wavelengths.
Advances in technology have made it possible to grow stable, high-quality synthetic quartz crystals, which have found a wide range of applications as ideal optical materials. |
| Optical Low Pass Filters (OLPFs) |
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| Interference between light from the object entering the lens of an optical imaging device and the arrangement of the photodiodes can sometimes create a fine pattern of stripes. If the image is printed "as is," an interference pattern known as "moire" is created, adversely affecting picture quality.
An OLPF has the property of separating light into ordinary and extraordinary optic rays and creating a double image. Building an OLPF into an optical imaging device reduces the stripped pattern to a point where it is invisible to the naked eye, giving a crisp and clear image. |
Digital video cameras |
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Digital still cameras |
| Structure and Characteristics |
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 Quartz Crystal Optical Characteristic Principle (double refraction principal) |
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Structure of OLPFs for DSCs |
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Interference Fringes (moire fringes) Removal Comparison |
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| Related Information |
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