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Teaching materialJeulin specializes in teaching materials for education (Physics, Chemistry, Life and Earth Sciences) and Technology in primary, secondary and higher education.
Laboratory equipment
Teachers, companies or individuals, choosing Le Laborantin is to trust the specialist in laboratory equipment, structured around a team of professionals in the sector.
Measuring equipmentFrench specialist in test and measurement instruments. We select our products from the biggest brands in the sector to offer you and guarantee the best of measurement.
Optical material
Specialized in the design, manufacture and supply of optical teaching materials for Higher Education, Ovio Instruments has been pursuing its primary vocation since 2007.
Birefringence is an optical property of anisotropic materials, such as quartz, which have different refractive indices depending on the polarization direction of the light passing through them. In these materials, two distinct refractive indices are observed:
An ordinary index (nâ‚€), for rays polarized in the plane perpendicular to the optical axis
An extraordinary index (nâ‚‘), for rays polarized in the plane containing the optical axis
Quartz is a positive uniaxial crystal, meaning that nâ‚‘ > nâ‚€, and its optical axis is aligned with the crystal's symmetry axis. The phase difference between the ordinary and extraordinary rays creates a phase shift.
