You can download OHARA optical glass catalog data in Excel file format from this web page. The data contains all 140 recommended eco glass types,18 eco low softening temperature optical glass types, special order glasses and the other glasses.
Notice for Special Order Glasses
The data for Special Order Glasses are from our previous catalog issued in 1990. Some glasses have slightly better coloring than the catalog values thanks to some minor modification of our process. We have not re-measured the internal transmittance of those glass types. Therefore please take the internal transmittance of the Special Order Glasses just as references.
Notice for Refractive Indices
Refractive index is calculated from dispersion formula. 6th decimal place will be rounded up when we show refractive index with 5 decimal places and 7th decimal place will be rounded up when we show refractive index with 6 decimal places.
Notice for Thermal Properties
Please note some glass types show no values on Strain Points (Stp), Annealing Point (AP) and Softening Point (SP) due to the difficulties of measurements (Marked "-").
Catalog Data (Excel format)
> Optical Glass for Polished Lenses / Optical Glass for Molded Aspherical Lenses(Low Tg Optical Glass)(Refractive index with 5 decimal places)
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