Safran Reosc - Safran Reosc is a world leader in the design, production and integration of high-performance optics

Safran Reosc is a world leader in the design, production and integration of high-performance optics for both civil and defense applications, including astronomy, space, high-energy lasers and the semiconductor industry. Founded in 1937 by Henri Chrétien, Safran Reosc has developed unrivaled expertise in optics for ground-based astronomy.

Products and services by Safran Reosc meet the most demanding requirements of a number of major research institutes and international scientific programs. Safran Reosc designs and develops innovative astronomical instruments and develops all types of optical components (lenses, aspherical mirrors, etc.) and subassemblies, based on either customer specifications or drawings.

From concept and design to manufacture and integration, Safran Reosc offers a complete range of high-performance optics and high-precision opto-mechanical equipment.


  • Opto-mechanical and thin-film engineering
  • Machining and lightening of glass or vitroceramic substrates
  • Precision polishing of plane, spherical, aspherical or free-form components, with a significant differentiating factor for large-size products
  • Optical metrology for surface shape and structure; accuracy to within a nanometer
  • Deposition of thin-film optical coatings adapted to high-energy laser, space, astronomy, defense and semiconductor applications
  • Assembly of high-quality opto-mechanical equipment in clean rooms


  • Large monolithic mirrors up to 8 meters in diameter
  • Segmented optics for giant telescopes
  • Thin glass sheets for adaptive optics systems
  • Active mirror assemblies, controlled by support actuators
  • Lightened structures and mirrors made of ceramic glass, silicon carbide or metal
  • High quality lenses and components
  • Customized optical thin-film coating service
  • Diffraction limited dioptric optics
  • Turnkey delivery of astronomy telescopes

Learn more

  • Ground-based astronomy (remotely operated telescopes, high-performance optics, active optic systems)
  • Satellite solutions (space telescopes, space optics, ground test equipment, electronics and hybrid circuits)
  • Semiconductors
  • Optical systems for high-energy lasers

Gender equality

Safran Reosc index: 89/100

Criterion 1: Pay gap between the average wages of women and men.
Criterion 2: Comparison of the percentage of women and men who have perceived an increase.
Criterion 3: Not applicable
Criterion 4: 100% of women having benefited from an increase upon returning from maternity / adoption leave.
Criterion 5: Number of women in the 10 highest salaries.

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