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GCC-501113 Protect Gold 90°Oﬀ-Axis Parabolic Mirrors

461.5

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461.5

GCC-501113 90°Oﬀ-Axis Parabolic Mirrors

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Mirrors and Reflectors

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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 Diameter^a	>90% of Diameter^a	>90% of Diameter^a
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
GCC-501101	90˚off-axis parabolic mirror	25.4	50.8	50.8	50.8	57.2	25.4	6.4
GCC-501102	90˚off-axis parabolic mirror	50.8	101.6	101.6	50.8	57.2	28.5	6.4
GCC-501103	90˚off-axis parabolic mirror	76.2	152.4	152.4	50.8	57.2	29.7	6.4
GCC-501104	90˚off-axis parabolic mirror	12.7	25.4	25.4	25.4	38.1	15.9	6.4
GCC-501105	90˚off-axis parabolic mirror	25.4	50.8	50.8	25.4	38.1	17.45	6.4
GCC-501106	90˚off-axis parabolic mirror	38.1	76.2	76.2	25.4	38.1	18.05	6.4
GCC-501107	90˚off-axis parabolic mirror	50.8	101.6	101.6	25.4	38.1	18.3	6.4
GCC-501111	90˚off-axis parabolic mirror with through holes	25.4	50.8	50.8	50.8	57.2	25.4	6.4
GCC-501112	90˚off-axis parabolic mirror with through holes	50.8	101.6	101.6	50.8	57.2	28.5	6.4
GCC-501113	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
GCC-501201	90˚off-axis parabolic mirror	25.4	50.8	50.8	50.8	57.2	25.4	6.4
GCC-501202	90˚off-axis parabolic mirror	50.8	101.6	101.6	50.8	57.2	28.5	6.4
GCC-501203	90˚off-axis parabolic mirror	76.2	152.4	152.4	50.8	57.2	29.7	6.4
GCC-501204	90˚off-axis parabolic mirror	12.7	25.4	25.4	25.4	38.1	15.9	6.4
GCC-501205	90˚off-axis parabolic mirror	25.4	50.8	50.8	25.4	38.1	17.45	6.4
GCC-501206	90˚off-axis parabolic mirror	38.1	76.2	76.2	25.4	38.1	18.05	6.4
GCC-501207	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
GCC-501301	90˚off-axis parabolic mirror	25.4	50.8	50.8	50.8	57.2	25.4	6.4
GCC-501302	90˚off-axis parabolic mirror	50.8	101.6	101.6	50.8	57.2	28.5	6.4
GCC-501303	90˚off-axis parabolic mirror	76.2	152.4	152.4	50.8	57.2	29.7	6.4
GCC-501304	90˚off-axis parabolic mirror	12.7	25.4	25.4	25.4	38.1	15.9	6.4
GCC-501305	90˚off-axis parabolic mirror	25.4	50.8	50.8	25.4	38.1	17.45	6.4
GCC-501306	90˚off-axis parabolic mirror	38.1	76.2	76.2	25.4	38.1	18.05	6.4
GCC-501307	90˚off-axis parabolic mirror	50.8	101.6	101.6	25.4	38.1	18.3	6.4