Elliptical flat mirrors

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Grouped product items
SKU Specifications Stock Qty Price Add to cart
9011621
Clear Aperture: >90
Dimensions tolerance, mm: ±0.1
Major axis, mm: 28
Material: N-BK7 or equivalent
Metallic coating on S1: Metallic R > 97% @ 620 - 680 nm, AOI = 45 ±20°
Minor axis, mm: 20
Opticus comment: missing productID ref
S1 Surface quality, S-D: 80-50
S2 Surface quality, S-D: 80-50
Thickness tolerance, mm: ±0.15
Thickness, mm: 2
Wedge / Parallelism error: < 30 arcsec
4
€60.00
9350475
Clear Aperture: >90
Dimensions tolerance, mm: (+0/-0.1)
Major axis, mm: 35.92
Material: BK7
Metallic coating on S1: UV enhanced Aluminum Ravg > 85 % @ 250 nm - 600 nm
Minor axis, mm: 25.4
S1 Flatness, PV: <λ/8 @ 632.8 nm
S1 Surface quality, S-D: 60-40
S2 Surface quality, S-D: 60-40
Thickness tolerance, mm: ±0.1
Thickness, mm: 5
Wedge / Parallelism error: <30 arcsec
20
€51.00
9539123
Clear Aperture: >90
Coatings: Protected Silver Ravg > 96% @ 550 nm - IR
Major axis, mm: 53.88 (+0/-0.1)
Material: BK7
Minor axis, mm: 38.1 (+0/-0.1)
Parallelism error: <30 arcsec
Opticus comment: missing productID ref
Protective chamfers: <0.25 mm x 45°
Surface quality, S-D: 40-20
Thickness, mm: 10.0 (±0.1)
3
€75.00
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When the maximum possible clear aperture is required, the best choice is elliptical flat mirrors. Due to unique geometry of substrate, the aperture becomes circular when mirror is rotated by 45˚ around the minor axis. The most common aluminum coating features a fair reflection in UV, visible and mid - IR wavelength ranges. Protected silver coatings assures the highest reflectivity of all metal coated mirrors in the visible wavelength range. Protected gold is the most efficient coating over the entire IR range. However, if higher reflectivity is needed, the best choice is dielectric coated elliptical mirrors.

  • Broad band protected metallic coatings
  • Dielectric HR coatings are available
  • Paralellism <30 arcsec
  • Circular clear aperture
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