New and improved technical tools Imaging lens selector Visit
Product classification
GCC-501302 Protect Silver 90˚off-axis parabolic mirror
GCC-5011 90°Off-Axis Parabolic Mirrors
The Off-Axis Parabolic Mirrors achromatically focus a collimated beam or collimate a divergent source, and their off-axis design separates the focal point from the rest of the beam path. The mirrors are fabricated using aluminum substrates. The parabolic surface has a protected gold coating which provides >95% average reflectance from 650nm to 20µm. The bottom of each mirror has three M4 mounting holes for easy installation and fixing. Now we have protect gold, protect silver and UV enhanced aluminum off-axis parabolic mirror for options.
Selection guide
When using off-axis parabolic mirror collimation point light source, according to the required output beam diameter to select the appropriate mirror, using the divergence Angle of incident light and parabolic mirror reflection effective focal length to calculate the beam diameter. Calculated by the small Angle approximation, the beam diameter, formula is as follows:
Beam Diameter = sin(θ) x REFL
If the output beam is from collimation optical fiber, the formula is as follows:
Beam Diameter = 2 x NA(fiber) x REFL
Specification:
Metallic Coating | Protected Gold | UV Enhanced Aluminum | Protect Silver | |||
Reflectance (Average) | >96%@650nm-20um | >85%@250nm-700um | >95%@450nm-20um | |||
Off-Axis Angle | 90° | 90° | 90° | |||
Clear Aperture | >90% of Diametera | >90% of Diametera | >90% of Diametera | |||
Surface Roughness (RMS) | < 10nm | < 10nm | < 10nm | |||
Surface Quality | 40-20 Scratch-Dig | 40-20 Scratch-Dig | 40-20 Scratch-Dig | |||
Parent Focal Length Tolerance | ±1% | ±1% | ±1% | |||
Reflected Focal Length Tolerance | ±1% | ±1% | ±1% | |||
Substrate | Aluminum | Aluminum | Aluminum |
GCC-5011 Protect Gold 90°Off-Axis Parabolic Mirrors
Part No. |
Part Name |
Parent Focal Length |
Reflected Focal Length |
Center offset |
Diameter |
A |
B |
C |
90˚off-axis parabolic mirror |
25.4 |
50.8 |
50.8 |
50.8 |
57.2 |
25.4 |
6.4 |
|
90˚off-axis parabolic mirror |
50.8 |
101.6 |
101.6 |
50.8 |
57.2 |
28.5 |
6.4 |
|
90˚off-axis parabolic mirror |
76.2 |
152.4 |
152.4 |
50.8 |
57.2 |
29.7 |
6.4 |
|
90˚off-axis parabolic mirror |
12.7 |
25.4 |
25.4 |
25.4 |
38.1 |
15.9 |
6.4 |
|
90˚off-axis parabolic mirror |
25.4 |
50.8 |
50.8 |
25.4 |
38.1 |
17.45 |
6.4 |
|
90˚off-axis parabolic mirror |
38.1 |
76.2 |
76.2 |
25.4 |
38.1 |
18.05 |
6.4 |
|
90˚off-axis parabolic mirror |
50.8 |
101.6 |
101.6 |
25.4 |
38.1 |
18.3 |
6.4 |
|
90˚off-axis parabolic mirror with through holes |
25.4 |
50.8 |
50.8 |
50.8 |
57.2 |
25.4 |
6.4 |
|
90˚off-axis parabolic mirror with through holes |
50.8 |
101.6 |
101.6 |
50.8 |
57.2 |
28.5 |
6.4 |
|
90˚off-axis parabolic mirror with through holes |
76.2 |
152.4 |
152.4 |
50.8 |
57.2 |
29.7 |
6.4 |
GCC-5012 UV Enhanced Aluminum 90˚Off-axis Parabolic Mirror
Part No. |
Part Name |
Parent Focal Length |
Reflected Focal Length |
Center offset |
Diameter |
A |
B |
C |
90˚off-axis parabolic mirror |
25.4 |
50.8 |
50.8 |
50.8 |
57.2 |
25.4 |
6.4 |
|
90˚off-axis parabolic mirror |
50.8 |
101.6 |
101.6 |
50.8 |
57.2 |
28.5 |
6.4 |
|
90˚off-axis parabolic mirror |
76.2 |
152.4 |
152.4 |
50.8 |
57.2 |
29.7 |
6.4 |
|
90˚off-axis parabolic mirror |
12.7 |
25.4 |
25.4 |
25.4 |
38.1 |
15.9 |
6.4 |
|
90˚off-axis parabolic mirror |
25.4 |
50.8 |
50.8 |
25.4 |
38.1 |
17.45 |
6.4 |
|
90˚off-axis parabolic mirror |
38.1 |
76.2 |
76.2 |
25.4 |
38.1 |
18.05 |
6.4 |
|
90˚off-axis parabolic mirror |
50.8 |
101.6 |
101.6 |
25.4 |
38.1 |
18.3 |
6.4 |
GCC-501307 Protect Silver 90˚Off-axis Parabolic Mirror
Part No. |
Part Name |
Parent Focal Length |
Reflected Focal Length |
Center offset |
Diameter |
A |
B |
C |
90˚off-axis parabolic mirror |
25.4 |
50.8 |
50.8 |
50.8 |
57.2 |
25.4 |
6.4 |
|
90˚off-axis parabolic mirror |
50.8 |
101.6 |
101.6 |
50.8 |
57.2 |
28.5 |
6.4 |
|
90˚off-axis parabolic mirror |
76.2 |
152.4 |
152.4 |
50.8 |
57.2 |
29.7 |
6.4 |
|
90˚off-axis parabolic mirror |
12.7 |
25.4 |
25.4 |
25.4 |
38.1 |
15.9 |
6.4 |
|
90˚off-axis parabolic mirror |
25.4 |
50.8 |
50.8 |
25.4 |
38.1 |
17.45 |
6.4 |
|
90˚off-axis parabolic mirror |
38.1 |
76.2 |
76.2 |
25.4 |
38.1 |
18.05 |
6.4 |
|
90˚off-axis parabolic mirror |
50.8 |
101.6 |
101.6 |
25.4 |
38.1 |
18.3 |
6.4 |
© 2019 Daheng New Epoch Technology,Inc. 京ICP备05081235号-2