Off-Axis Parabolic Metal Mirrors

View More Images 
  • Aluminum Substrate Mirrors
  • Available in 30°, 60°, or 90° Off-Axis
  • Mounting Plates Also Available

Aluminum substrate mirrors are also available as 30°, 60°, or 90° off-axis parabolic reflectors. Off-axis parabolic mirrors are only a section of the parabola form. Unlike standard parabolic mirrors, these mirrors direct and focus incident collimated light at a specific angle, allowing unrestricted access to the focal point (see diagram). Typically used as collimators in Schlieren and MTF systems, our gold coated off-axis parabolic mirrors can also be used in FLIR test systems. Due to the 175Å surface roughness, they are not suitable for visible and ultraviolet applications that require low scatter.

25.4mm Diameter and 50.8mm Diameter Mirrors have (3) 6-32 TPI tapped holes (on 3/4" Bolt Circle for 25.4mm Dia, 1.25" Bolt Circle for 50.8mm) for easy, accurate mounting; 76.2 mm Diameter Mirrors have (3) 8-32 TPI tapped holes (on 2.25" Bolt Circle) for mounting. Mounting plates sold separately.

Mounting Plates for Off-Axis Parabolic Mirrors

The black anodized aluminum (6061-T6) adapter plates have three bored holes to allow the off-axis mirrors to be securely mounted in standard optical equipment. Adapter plates also feature four 1/4-20 tapped holes for threading onto standard post holders. Three socket head cap screws included.

 View Legend
Description Stock No. Price In Stock  
Showing 1-20 of 51 Items | Show All Items | Sort by Spec
1, 2, 3  | Next
25.4 X 25.4mm 30 Degree Off Axis Parabolic Aluminum Mirror
NT63-180 $215.00 In stock and ready to ship. Click to add this item to your cart.
Type 30° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 25.40
Effective Focal Length EFL (mm) 27.22
Y Offset (mm) 13.61
Coating Protected Aluminum
RoHS Compliant
25.4 X 25.4mm 30 Degree Off Axis Parabolic Gold Mirror
NT63-192 $315.00 In stock and ready to ship. Click to add this item to your cart.
Type 30° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 25.40
Effective Focal Length EFL (mm) 27.22
Y Offset (mm) 13.61
Coating Protected Gold
RoHS Compliant
25.4 X 50.8mm 30 Degree Off Axis Parabolic Aluminum Mirror
NT47-085 $145.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type 30° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 50.80
Effective Focal Length EFL (mm) 54.45
Y Offset (mm) 27.20
Coating Protected Aluminum
RoHS Exempt
25.4 X 50.8mm 30 Degree Off Axis Parabolic Gold Mirror
NT47-086 $255.00 In stock and ready to ship. Click to add this item to your cart.
Type 30° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 50.80
Effective Focal Length EFL (mm) 54.45
Y Offset (mm) 27.20
Coating Protected Gold
RoHS Exempt
50.8 X 50.8mm 30 Degree Off Axis Parabolic Aluminum Mirror
NT47-087 $315.00 In stock and ready to ship. Click to add this item to your cart.
Type 30° Off-Axis
Diameter (mm) 50.80
Parent Focal Length (mm) 50.80
Effective Focal Length EFL (mm) 54.45
Y Offset (mm) 27.20
Coating Protected Aluminum
RoHS Exempt
50.8 X 50.8mm 30 Degree Off Axis Parabolic Gold Mirror
NT47-088 $380.00 In stock and ready to ship. Click to add this item to your cart.
Type 30° Off-Axis
Diameter (mm) 50.80
Parent Focal Length (mm) 50.80
Effective Focal Length EFL (mm) 54.45
Y Offset (mm) 27.20
Coating Protected Gold
RoHS Exempt
50.8 X 101.6mm 30 Degree Off Axis Parabolic Aluminum Mirror
NT47-089 $280.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type 30° Off-Axis
Diameter (mm) 50.80
Parent Focal Length (mm) 101.60
Effective Focal Length EFL (mm) 108.89
Y Offset (mm) 54.50
Coating Protected Aluminum
RoHS Exempt
50.8 X 101.6mm 30 Degree Off Axis Parabolic Gold Mirror
NT47-090 $355.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type 30° Off-Axis
Diameter (mm) 50.80
Parent Focal Length (mm) 101.60
Effective Focal Length EFL (mm) 108.89
Y Offset (mm) 54.50
Coating Protected Gold
RoHS Exempt
25.4 X 25.4mm 60 Degree Off Axis Parabolic Aluminum Mirror
NT47-091 $155.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type 60° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 25.40
Effective Focal Length EFL (mm) 33.85
Y Offset (mm) 29.30
Coating Protected Aluminum
RoHS Exempt
25.4 X 25.4mm 60 Degree Off Axis Parabolic Gold Mirror
NT47-092 $250.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type 60° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 25.40
Effective Focal Length EFL (mm) 33.85
Y Offset (mm) 29.30
Coating Protected Gold
RoHS Exempt
25.4 X 38.1mm 60 Degree Off Axis Parabolic Aluminum Mirror
NT47-093 $130.00 In stock and ready to ship. Click to add this item to your cart.
Type 60° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 38.10
Effective Focal Length EFL (mm) 50.80
Y Offset (mm) 44.00
Coating Protected Aluminum
RoHS Exempt
25.4 X 38.1mm 60 Degree Off Axis Parabolic Gold Mirror
NT47-094 $230.00 In stock and ready to ship. Click to add this item to your cart.
Type 60° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 38.10
Effective Focal Length EFL (mm) 50.80
Y Offset (mm) 44.00
Coating Protected Gold
RoHS Exempt
25.4 X 50.8mm 60 Degree Off Axis Parabolic Aluminum Mirror
NT63-181 $130.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type 60° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 50.80
Effective Focal Length EFL (mm) 67.74
Y Offset (mm) 58.64
Coating Protected Aluminum
RoHS Compliant
25.4 X 50.8mm 60 Degree Off Axis Parabolic Gold Mirror
NT63-193 $230.00 In stock and ready to ship. Click to add this item to your cart.
Type 60° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 50.80
Effective Focal Length EFL (mm) 67.74
Y Offset (mm) 58.64
Coating Protected Gold
RoHS Compliant
50.8 X 76.2mm 60 Degree Off Axis Parabolic Aluminum Mirror
NT63-182 $325.00 In stock and ready to ship. Click to add this item to your cart.
Type 60° Off-Axis
Diameter (mm) 50.80
Parent Focal Length (mm) 76.20
Effective Focal Length EFL (mm) 101.60
Y Offset (mm) 87.98
Coating Protected Aluminum
RoHS Compliant
50.8 X 76.2mm 60 Degree Off Axis Parabolic Gold Mirror
NT63-194 $395.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type 60° Off-Axis
Diameter (mm) 50.80
Parent Focal Length (mm) 76.20
Effective Focal Length EFL (mm) 101.60
Y Offset (mm) 87.98
Coating Protected Gold
RoHS Compliant
25.4 X 12.7mm 90 Degree Off Axis Parabolic Aluminum Mirror
NT47-095 $130.00 In stock and ready to ship. Click to add this item to your cart.
Type 90° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 12.70
Effective Focal Length EFL (mm) 25.40
Y Offset (mm) 25.40
Coating Protected Aluminum
RoHS Exempt
25.4 X 12.7mm 90 Degree Off Axis Parabolic Gold Mirror
NT47-096 $230.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type 90° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 12.70
Effective Focal Length EFL (mm) 25.40
Y Offset (mm) 25.40
Coating Protected Gold
RoHS Exempt
25.4 X 25.4mm 90 Degree Off Axis Parabolic Aluminum Mirror
NT47-097 $130.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type 90° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 25.40
Effective Focal Length EFL (mm) 50.80
Y Offset (mm) 50.80
Coating Protected Aluminum
RoHS Exempt
25.4 X 25.4mm 90 Degree Off Axis Parabolic Gold Mirror
NT47-098 $230.00 Click to receive an email with delivery information. Click to add this item to your cart.
Type 90° Off-Axis
Diameter (mm) 25.40
Parent Focal Length (mm) 25.40
Effective Focal Length EFL (mm) 50.80
Y Offset (mm) 50.80
Coating Protected Gold
RoHS Exempt
 Sort by Spec
Overall Mirror Specifications
Substrate Aluminum 6061-T6
Diameter Tolerance +0.00/-0.381mm
Focal Length Tolerance ±1%
Surface Figure 1/4 λ RMS
Surface Roughness < 175Å RMS
Coating Protected Aluminum or Protected Gold

View Theoretical Reflectance Curves

Mount Plate Specifications
Plate Outer Diameter For 25.4mm Mirrors: 50.8mm
For 50.8mm Mirrors: 76.2mm
For 76.2mm Mirrors: 101.6mm
Plate Thickness For 25.4mm Mirrors: 7.925mm
For 50.8mm Mirrors: 9.525mm
For 76.2mm Mirrors: 12.700mm
Screw Type 6-32 TPI for 50.8mm and 76.2mm OD Plates
8-32 TPI for 101.6mm OD Plate
Bolt Hole Circle For 25.4mm Mirrors: 19.05mm
For 50.8mm Mirrors: 31.75mm
For 76.2mm Mirrors: 57.15mm
Dimensional Specifications
Diameter (mm) Parent FL (mm) EFL (mm) Y Offset (mm) A (mm) B (mm) C (mm) Stock No.
Protected Aluminum Protected Gold
30° Off-Axis Mirrors
25.4 25.4 27.22 13.61 13.20 31.75 6.35 #63-180 #63-192
25.4 50.8 54.45 27.22 12.20 56.13 6.35 #47-085 #47-086
50.8 50.8 54.45 27.22 20.06 57.15 6.35 #47-087 #47-088
50.8 101.6 108.89 54.45 20.06 105.92 6.35 #47-089 #47-090
60° Off-Axis Mirrors
25.4 25.4 33.85 29.33 21.08 28.96 6.35 #47-091 #47-092
25.4 38.1 50.80 43.99 21.08 38.10 6.35 #47-093 #47-094
25.4 50.8 67.74 58.64 21.08 47.74 6.35 #63-181 #63-193
50.8 76.2 101.60 87.98 35.56 69.60 6.35 #63-182 #63-194
90° Off-Axis Mirrors
25.4 12.7 25.40 25.40 31.75 15.75 6.35 #47-095 #47-096
25.4 25.4 50.80 50.80 31.75 17.53 6.35 #47-097 #47-098
25.4 38.1 76.20 76.20 31.75 18.03 6.35 #63-183 #63-195
25.4 50.8 101.60 101.60 31.75 18.29 6.35 #47-099 #47-100
25.4 76.2 152.40 152.40 31.75 18.54 6.35 #63-184 #63-196
50.8 25.4 50.80 50.80 57.15 25.40 6.35 #47-103 #47-104
50.8 38.1 76.20 76.20 57.15 27.43 6.35 #47-105 #47-106
50.8 50.8 101.60 101.60 57.15 28.45 6.35 #47-107 #47-108
50.8 76.2 152.40 152.40 57.15 29.72 6.35 #47-109 #47-110
50.8 88.9 177.80 177.80 57.15 29.97 6.35 #63-185 #63-197
50.8 95.3 190.50 190.50 57.15 29.97 6.35 #63-186 #63-198
76.2 25.4 50.80 50.80 83.82 31.50 7.62 #63-187 #63-199
76.2 38.1 76.20 76.20 83.82 36.07 7.62 #63-188 #63-200
76.2 63.5 127.00 127.00 83.82 39.88 7.62 #63-189 #63-201
76.2 76.2 152.40 152.40 83.82 40.89 7.62 #63-190 #63-202
76.2 88.9 177.80 177.80 83.82 41.66 7.62 #63-191 #63-203

Related Documents