The core characteristics of off-axis mirrors include focal point separation, achromatic focusing, and high precision. The off-axis design ensures that the focal point is no longer on the optical axis, avoiding potential obstructions that can occur with traditional parabolic mirrors, thereby enhancing the system’s compactness and flexibility. Additionally, off-axis mirrors can focus collimated beams or collimated divergent sources without chromatic aberration, and they do not introduce spherical aberration, chromatic aberration, phase delay, or absorption loss.
Specific applications of off-axis mirrors include beam collimation, focusing, and deflection. Off-axis parabolic mirrors are suitable for a wide range of wavelengths, such as 250 nm-450 nm, 450 nm-20.0 μm, and 800 nm-20.0 μm, making them particularly suitable for femtosecond pulse lasers. Due to their high precision and achromatic properties, off-axis mirrors are widely used in optical instruments and laser technology.
The design and manufacturing of off-axis mirrors involve several critical factors, including the off-axis distance, off-axis angle, and surface roughness. Using principles of autocollimation and computer-aided alignment, the position and angle of off-axis mirrors can be measured accurately to ensure high-precision manufacturing. The surface roughness of off-axis mirrors significantly impacts their performance. Typical surface roughness parameters, such as<50Å or <100Å RMS, can reduce unwanted scattered light and improve optical performance.
Material | Aluminum Alloy 6061-T6 |
Dimension tolerance | ±0.1mm |
Thickness tolerance | +0.0mm / -0.1mm |
Surface quality | 20/10 |
Surface accuracy | RMS<λ/10@632.8nm |
Surface roughness | <150 Ra-2Ra |
Type No. | Diameter（mm） | Reflective Focal Length（mm） | Conical Hole Parallel to the Focusing Beam | Coating |
OAP-08071 | 8 | 7 | NONE | Protective Al / Ag / Au |
OAP-05051 | 12.7 | 12.7 | NONE | Protective Al / Ag / Au |
OAP-05151 | 12.7 | 15 | NONE | Protective Al / Ag / Au |
OAP-05241 | 12.7 | 24 | NONE | Protective Al / Ag / Au |
OAP-05331 | 12.7 | 33 | NONE | Protective Al / Ag / Au |
OAP-0521 | 12.7 | 50.8 | NONE | Protective Al / Ag / Au |
OAP-10501 | 25.4 | 12.7 | NONE | Protective Al / Ag / Au |
OAP-10502 | 25.4 | 12.7 | 3mm or customized | Protective Al / Ag / Au |
OAP-1101 | 25.4 | 25.4 | NONE | Protective Al / Ag / Au |
OAP-1102 | 25.4 | 25.4 | 3mm or customized | Protective Al / Ag / Au |
OAP-110501 | 25.4 | 38.1 | NONE | Protective Al / Ag / Au |
OAP-110502 | 25.4 | 38.1 | 3mm or customized | Protective Al / Ag / Au |
OAP-1201 | 25.4 | 50.8 | NONE | Protective Al / Ag / Au |
OAP-1202 | 25.4 | 50.8 | 3mm or customized | Protective Al / Ag / Au |
OAP-1301 | 25.4 | 76.2 | NONE | Protective Al / Ag / Au |
OAP-1302 | 25.4 | 76.2 | 3mm or customized | Protective Al / Ag / Au |
OAP-1401 | 25.4 | 101.6 | NONE | Protective Al / Ag / Au |
OAP-1402 | 25.4 | 101.6 | 3mm or customized | Protective Al / Ag / Au |
OAP-1601 | 25.4 | 152.4 | NONE | Protective Al / Ag / Au |
OAP-1602 | 25.4 | 152.4 | 3mm or customized | Protective Al / Ag / Au |
OAP-1801 | 25.4 | 203.2 | NONE | Protective Al / Ag / Au |
OAP-1802 | 25.4 | 203.2 | 3mm or customized | Protective Al / Ag / Au |
OAP-2101 | 50.8 | 25.4 | NONE | Protective Al / Ag / Au |
OAP-2102 | 50.8 | 25.4 | 3mm or customized | Protective Al / Ag / Au |
OAP-210501 | 50.8 | 38.1 | NONE | Protective Al / Ag / Au |
OAP-210502 | 50.8 | 38.1 | 3mm or customized | Protective Al / Ag / Au |
OAP-2201 | 50.8 | 50.8 | NONE | Protective Al / Ag / Au |
OAP-2202 | 50.8 | 50.8 | 3mm or customized | Protective Al / Ag / Au |
OAP-2301 | 50.8 | 76.2 | NONE | Protective Al / Ag / Au |
OAP-2302 | 50.8 | 76.2 | 3mm or customized | Protective Al / Ag / Au |
OAP-2401 | 50.8 | 101.6 | NONE | Protective Al / Ag / Au |
OAP-2402 | 50.8 | 101.6 | 3mm or customized | Protective Al / Ag / Au |
OAP-2601 | 50.8 | 152.4 | NONE | Protective Al / Ag / Au |
OAP-2602 | 50.8 | 152.4 | 3mm or customized | Protective Al / Ag / Au |
OAP-2801 | 50.8 | 203.2 | NONE | Protective Al / Ag / Au |
OAP-2802 | 50.8 | 203.2 | 3mm or customized | Protective Al / Ag / Au |
OAP-21001 | 50.8 | 254 | NONE | Protective Al / Ag / Au |
OAP-21002 | 50.8 | 254 | 3mm or customized | Protective Al / Ag / Au |
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