i-line Glass
Built on more than 100 years of optical material development, Nikon uses a combination of high-purity raw materials and Nikon's specialized equipment to achieve high transmittance at 365 nm (i-line).
Applications
Lenses and optical components for:
- Semiconductor and FPD lithography systems
- Industrial inspection equipment
- Various observation equipment
- *Please contact our sales department for further information on these and other applications
Features
- Wide variety of i-line glass types
Nikon's proprietary technologies enable a wide lineup of glass types, from high refraction-type (7054) to low dispersion-type (4786) glass. - High transmittance for 365 nm (i-line)
Combining the use of high-purity raw materials and an optimized manufacturing process, Nikon consistently produces materials with high 365 nm transmittance. - Refractive index homogeneity
By optimizing both the manufacturing and critical annealing process, Nikon i-line glass materials achieve high refractive index homogeneity. - Solarization
Nikon's unique technologies, raw materials and manufacturing process provide high resistance to solarization.
Product line-up
Swipe horizontally to view full table.
| Glass type | 4786 | 5859 | 5742 | 5165 | 7054 | |
|---|---|---|---|---|---|---|
| Refractive index nd |
1.47410 | 1.59042 | 1.57653 | 1.51183 | 1.70623 | |
| Dispersion νd |
86.8 | 59.5 | 42.1 | 65.0 | 54.7 | |
| 10 mm internal transmittance (365 nm) τi |
99.8% | 99.7% | 99.6% | 99.8% | 99.4% | |
| Refractive index ni |
1.48726 | 1.61450 | 1.61265 | 1.53073 | 1.73811 | |
| Variation of ni within a single lot (X10-5) |
2 | 2 | 2 | 10 | 10 | |
| Solarization | Good | Good | Good | Good | Good | |
- *10 mm internal transmittance:
Indicates a representative value of the light transmittance at i-line (365 nm) with glass of 10 mm thickness, excluding reflection losses. - *Refractive index:
Indicates a representative value of the refractive index at i-line (365 nm). Depending on the required quality, longer annealing time is needed and the refractive index value will change. These data are based on Nikon's typical annealing conditions. - *Variation of ni within a single lot:
Indicates a guaranteed value of the refractive index variation of a part within a single lot, with the same melt and same annealing run. - *Solarization:
The degree of solarization is indicated as a decrease in transmittance caused by radiation from a super-high-pressure mercury-vapor lamp at the wavelength for which a transmittance of 80% was exhibited before irradiation.
Transmittance
- *All data on this page are typical but not guaranteed values.
- *Please ask about different sizes and specifications.
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N.B. Export of the products* on this page is controlled under the Japanese Foreign Exchange and Foreign Trade Law. Appropriate export procedure shall be required in case of export from Japan.
- *Products: Hardware and its technical information (including software)