Germanium Single Lens / SLGE-25-100P
The single crystal of germanium used in semiconductor is less absorption in the infrared wavelength of 2 - 20μm and it can be used as an optical element of the infrared light. It is a single lens which was made with the germanium crystal. It is used as a lens of a camera to observe the infrared, such as thermography.
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Part Number
SLGE-25-100P
¥26,400
◦Even though it looks like the light does not transmit because of its metallic luster, it is transmitting through a wide infrared range of 2 - 20μm.
◦The wavelength of 1.5μm or less does not transmit, so it also provides the effect of an infrared transmission filter.
◦Since the silicon lens has a refractive index of 4 or more, the lens curvature is slower then when made from standard glass.
◦The wavelength of 1.5μm or less does not transmit, so it also provides the effect of an infrared transmission filter.
◦Since the silicon lens has a refractive index of 4 or more, the lens curvature is slower then when made from standard glass.
| Catalog Code | W3193 | ||||||||||||||||||||||
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| RoHS | Yes | ||||||||||||||||||||||
| CE | No | ||||||||||||||||||||||
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| Guide | ▶It is available with an AR coating to reduce the transmission loss by reflection at the requested wavelength. | ||||||||||||||||||||||
| Attention | ▶Germanium lens can have metallic luster, so that visible light is reflected and absorbed. Because of this, no transmittance occurs. ▶Germanium lens without an anti-reflection coating has a loss due to surface reflection and results in transmittance of about 40%. ▶For the observation of infrared wavelengths, it is necessary to consider the effect of the radiation spectrum by temperature. In case of using in an environment of 30℃ or more, radiant light of infrared (near 9.6μm) is emitted from all substances, and it will not be able to properly observe this infrared spectrum. |
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