Product

Optical and Laser Devices

Aspherical Mirrors

Toroidal Mirrors TRseries

Highly-Smoothed Surface, High Reflectance, High Quality

Toroidal Mirrors TRseries

  • Shimadzu toroidal mirrors are manufactured by polishing optical glass with highly-smoothed surface.
  • Standard coating of Aluminum brings high reflectance in ultraviolet region.
  • The newly developed production method secures continuous delivery of stable quality products.
  • Non-Use of Specific Chemical Substances*1
*1. RoHS Directive: Directive on the restriction of the use of certain hazardous substances (mercury, cadmium, lead, hexavalent chromium, PBB and PBDE) in the EU. (EU Directive 2002/95/EC)

Toroidal mirrors are:

Toroidal mirrors

Toroidal mirrors are aspherical mirrors where each curvature of orthogonal two axes (horizontal and vertical one) are different. Barrel or Tire shaped with a rotation axis are available.

Difference to spherical mirrors

When a spherical mirror focuses a light from a point source, there appears astigmatism. Toroidal mirrors, however, minimize such astigmatism and make it possible to focus on a small spot. The toroidals are ideal for focusing and/or aberration correction devices for spectroscopes.

Specifications

Code name Dimensions
WxHxT (mm)		 Curvature Rh
(mm)		 Curvature Rh
tolerance 		Curvature Rv
(mm)		 Curvature ratio(Rv/Rh)
tolerance
TR052-17A2025 20x25x3.0 52 ±0.5% 47.6 ±0.5%
TR091-30A2025 20x25x3.0 91 ±0.5% 68.2 ±0.5%
TR232-24A3030 30x30x4.4 232.18 ±0.8% 194.03 ±0.8%
TR234-19A3035 30x35x6.0 234.19 ±0.8% 208.25 ±0.8%
TR282-45A4530 45x30x6.0 282.8 ±1.5% 141.4 ±0.8%
TR785-38A7065 70x65x7.0 785.4 ±5% 487.6 ±2%
(note : Curvature tolerance of Rv is defined by the curvature ratio against Rh.)

Standard Specifications

Material Soda glass
External dimensional tolerance (mm) ±0.2 (W) x ±0.2 (H)
Thickness tolerance(mm) ±0.2(T)
Effective area Total area less a 2mm strip around the perimeter
Coating Al(aluminum)
Scratches and digs 60-40(MIL-O-13830A)
Storage Condition : no condensation

Schematic Diagram

Schematic Diagram

  • Toroidal mirrors other than standard products are available
  • Specifications are subject to change without notice for improvement.
  • OEM prices are also available. Please contact Shimadzu for details.



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