The CR39 Polaroid lens is an organic material with a high molecular chain structure and a three-dimensional network structure. The structure between the molecules is relatively relaxed and there is room for relative displacement between the molecular chains....
Because of the gap between the molecular chains, so the number of molecules per unit volume is small, determines the advantages of resin lenses: low specific gravity, light texture, is a glass lens 1/3-1/2....
Good transmittance: in the visible region, the resin lens transmittance is close to glass; in the infrared region, slightly higher than glass; in the ultraviolet region, the transmittance decreases with the decrease of wavelength at 0.4um, and almost all the light with wavelength less than 0.3um is absorbed, so the transmittance is poor....
Resin polarizing lens is an organic material. It is a kind of polymer chain structure, which is connected with a three-dimensional network structure. The structure between molecules is relatively relaxed, and there is space for relative displacement between the molecular chains....
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