Product Information
Extremely high homogeneity for large precision optics
The superior quality of an optical material is reflected in its homogeneity and, to be even more specific, in an extremely narrow variation range for the entire piece of glass with respect to refractive index. Therefore, the optical glasses that are used in high-power laser and astronomical applications require extremely high homogeneity.

As part of its broad range of optical glasses, SCHOTT manufactures high-quality glasses up to the homogeneity level H5. In response to increased demand, SCHOTT now offers its customers short lead times for a wide range of preferred glasses up to level H4. Some of these glasses are also available as i-Line glasses that combine extremely high refractive index homogeneity and high UV transmittance at 365 nm.

Advantages
• Select high homogeneity glass (quality level H4) is available from stock on short notice
• The maximum allowed refractive index variation is very tight: Peak to valley 2 x 10-6 for H4 glasses (1 x 10-6 for H5 glasses)
• Extremely high resolution imaging
• Products are supplied with individual test certificates
• Homogeneity is measured using highly advanced interferometers
• Optical glass specialists offer expert advice, world-class support and in-depth application know-how

Technical Information
Specifications

SCHOTT offers highly homogeneous glasses in five levels. Thanks to a carefully controlled manufacturing process, glass pieces in H4 quality have a maximum peak to valley refractive index variation of 2 x 10-6, while the quality level H5 achieves a value of 1 x 10-6.

Options : micro powder, BK7