- 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.
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Showing 1-20 of 51 Items | Show All Items
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25.4 X 25.4mm 30 Degree Off Axis Parabolic Aluminum Mirror
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NT63-180 | $215.00 |
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25.4 X 25.4mm 30 Degree Off Axis Parabolic Gold Mirror
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NT63-192 | $315.00 |
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25.4 X 50.8mm 30 Degree Off Axis Parabolic Aluminum Mirror
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NT47-085 | $145.00 |
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25.4 X 50.8mm 30 Degree Off Axis Parabolic Gold Mirror
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NT47-086 | $255.00 |
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50.8 X 50.8mm 30 Degree Off Axis Parabolic Aluminum Mirror
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NT47-087 | $315.00 |
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50.8 X 50.8mm 30 Degree Off Axis Parabolic Gold Mirror
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NT47-088 | $380.00 |
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50.8 X 101.6mm 30 Degree Off Axis Parabolic Aluminum Mirror
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NT47-089 | $280.00 |
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50.8 X 101.6mm 30 Degree Off Axis Parabolic Gold Mirror
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NT47-090 | $355.00 |
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25.4 X 25.4mm 60 Degree Off Axis Parabolic Aluminum Mirror
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NT47-091 | $155.00 |
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25.4 X 25.4mm 60 Degree Off Axis Parabolic Gold Mirror
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NT47-092 | $250.00 |
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25.4 X 38.1mm 60 Degree Off Axis Parabolic Aluminum Mirror
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NT47-093 | $130.00 |
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25.4 X 38.1mm 60 Degree Off Axis Parabolic Gold Mirror
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NT47-094 | $230.00 |
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25.4 X 50.8mm 60 Degree Off Axis Parabolic Aluminum Mirror
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NT63-181 | $130.00 |
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25.4 X 50.8mm 60 Degree Off Axis Parabolic Gold Mirror
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NT63-193 | $230.00 |
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50.8 X 76.2mm 60 Degree Off Axis Parabolic Aluminum Mirror
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NT63-182 | $325.00 |
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50.8 X 76.2mm 60 Degree Off Axis Parabolic Gold Mirror
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NT63-194 | $395.00 |
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25.4 X 12.7mm 90 Degree Off Axis Parabolic Aluminum Mirror
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NT47-095 | $130.00 |
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25.4 X 12.7mm 90 Degree Off Axis Parabolic Gold Mirror
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NT47-096 | $230.00 |
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25.4 X 25.4mm 90 Degree Off Axis Parabolic Aluminum Mirror
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NT47-097 | $130.00 |
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25.4 X 25.4mm 90 Degree Off Axis Parabolic Gold Mirror
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NT47-098 | $230.00 |
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| 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 |
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