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TECHSPEC^® components are designed, specified, or manufactured by Edmund Optics. Learn More

λ/20 First Surface Mirrors

Precision Fused Silica Substrate
20-10 Surface Quality
Low Coefficient of Thermal Expansion

TECHSPEC® λ/20 First Surface Mirrors are polished to industry leading surface accuracy and quality specifications to minimize reflected wavefront error. These mirrors feature a precision fused silica substrate with a low coefficient of thermal expansion. Multiple coating options are available, allowing these mirrors to be integrated into applications spanning the visible through infrared spectra. TECHSPEC® λ/20 First Surface Mirrors are ideal for beam steering and reflection applications and are available in a variety of size, thickness, and coating options.

Note: Surface flatness is measured before coating.

Common Specifications

Back Surface:

Commercial Polish

Clear Aperture (%):

90.00

Edges:

Ground, protective bevel as needed

Parallelism (arcsec):

30.00

Substrate:

Fused Silica (Corning 7980)

Surface Quality:

20-10

Coating Type:

Metal

Products
Technical Information
Accessories
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Products

Dia. (mm)	Surface Flatness (P-V)	Dimensions (mm)	Coating Specification	Coating	Thickness (mm)	Stock Number	Price	Buy

10.00 10.00	λ/20 λ/20	- -	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	2.00 2.00	#34-354	181.25 S$181.25 Qty 6+ S$143.55 Request Quote	3-5 days ×
10.00 10.00	λ/20 λ/20	- -	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	2.00 2.00	#34-370	223.30 S$223.30 Qty 6+ S$179.80 Request Quote	Contact Us ×
10.00 10.00	λ/20 λ/20	- -	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	2.00 2.00	#34-386	216.05 S$216.05 Qty 6+ S$172.55 Request Quote	3-5 days ×
10.00 10.00	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	- -	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	2.00 2.00	#70-285 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	181.25 S$181.25 Qty 6+ S$145.00 Request Quote	3-5 days ×
- -	λ/20 λ/20	10.0 x 10.0 10.0 x 10.0	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	2.00 2.00	#34-355	181.25 S$181.25 Qty 6+ S$143.55 Request Quote	3-5 days ×
- -	λ/20 λ/20	10.0 x 10.0 10.0 x 10.0	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	2.00 2.00	#34-371	223.30 S$223.30 Qty 6+ S$179.80 Request Quote	Contact Us ×
- -	λ/20 λ/20	10.0 x 10.0 10.0 x 10.0	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	2.00 2.00	#34-387	216.05 S$216.05 Qty 6+ S$172.55 Request Quote	Contact Us ×
- -	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	10.00 x 10.00 10.00 x 10.00	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	2.00 2.00	#70-286 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	181.25 S$181.25 Qty 6+ S$145.00 Request Quote	3-5 days ×
15.00 15.00	λ/20 λ/20	- -	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	3.00 3.00	#34-356	191.40 S$191.40 Qty 6+ S$153.70 Request Quote	3-5 days ×
15.00 15.00	λ/20 λ/20	- -	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	3.00 3.00	#34-372	245.05 S$245.05 Qty 6+ S$195.75 Request Quote	3-5 days ×
15.00 15.00	λ/20 λ/20	- -	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	3.00 3.00	#34-388	223.30 S$223.30 Qty 6+ S$179.80 Request Quote	3-5 days ×
15.00 15.00	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	- -	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	3.00 3.00	#70-287 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	191.40 S$191.40 Qty 6+ S$153.70 Request Quote	3-5 days ×
- -	λ/20 λ/20	15.0 x 15.0 15.0 x 15.0	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	3.00 3.00	#34-357	191.40 S$191.40 Qty 6+ S$153.70 Request Quote	3-5 days ×
- -	λ/20 λ/20	15.0 x 15.0 15.0 x 15.0	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	3.00 3.00	#34-373	245.05 S$245.05 Qty 6+ S$195.75 Request Quote	Contact Us ×
- -	λ/20 λ/20	15.0 x 15.0 15.0 x 15.0	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	3.00 3.00	#34-389	223.30 S$223.30 Qty 6+ S$179.80 Request Quote	Contact Us ×
- -	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	15.00 x 15.00 15.00 x 15.00	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	3.00 3.00	#70-288 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	191.40 S$191.40 Qty 6+ S$153.70 Request Quote	3-5 days ×
20.00 20.00	λ/20 λ/20	- -	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	3.00 3.00	#34-358	208.80 S$208.80 Qty 6+ S$166.75 Request Quote	3-5 days ×
20.00 20.00	λ/20 λ/20	- -	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	3.00 3.00	#34-374	255.20 S$255.20 Qty 6+ S$204.45 Request Quote	3-5 days ×
20.00 20.00	λ/20 λ/20	- -	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	3.00 3.00	#34-390	247.95 S$247.95 Qty 6+ S$198.65 Request Quote	Contact Us ×
20.00 20.00	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	- -	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	3.00 3.00	#70-289 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	208.80 S$208.80 Qty 6+ S$166.75 Request Quote	3-5 days ×
- -	λ/20 λ/20	20.0 x 20.0 20.0 x 20.0	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	3.00 3.00	#34-359	208.80 S$208.80 Qty 6+ S$166.75 Request Quote	Contact Us ×
- -	λ/20 λ/20	20.0 x 20.0 20.0 x 20.0	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	3.00 3.00	#34-375	255.20 S$255.20 Qty 6+ S$204.45 Request Quote	3-5 days ×
- -	λ/20 λ/20	20.0 x 20.0 20.0 x 20.0	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	3.00 3.00	#34-391	247.95 S$247.95 Qty 6+ S$198.65 Request Quote	3-5 days ×
- -	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	20.00 x 20.00 20.00 x 20.00	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	3.00 3.00	#70-290 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	208.80 S$208.80 Qty 6+ S$166.75 Request Quote	Contact Us ×
25.00 25.00	λ/20 λ/20	- -	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	4.00 4.00	#34-360	216.05 S$216.05 Qty 6+ S$172.55 Request Quote	3-5 days ×
25.00 25.00	λ/20 λ/20	- -	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	4.00 4.00	#34-376	320.45 S$320.45 Qty 6+ S$255.92 Request Quote	Contact Us ×
25.00 25.00	λ/20 λ/20	- -	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	4.00 4.00	#34-392	276.95 S$276.95 Qty 6+ S$221.13 Request Quote	3-5 days ×
25.00 25.00	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	- -	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	4.00 4.00	#70-291 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	216.05 S$216.05 Qty 6+ S$172.55 Request Quote	Contact Us ×
- -	λ/20 λ/20	25.0 x 25.0 25.0 x 25.0	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	4.00 4.00	#34-361	216.05 S$216.05 Qty 6+ S$172.55 Request Quote	Contact Us ×
- -	λ/20 λ/20	25.0 x 25.0 25.0 x 25.0	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	4.00 4.00	#34-377	320.45 S$320.45 Qty 6+ S$255.92 Request Quote	Contact Us ×
- -	λ/20 λ/20	25.0 x 25.0 25.0 x 25.0	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	4.00 4.00	#34-393	276.95 S$276.95 Qty 6+ S$221.13 Request Quote	3-5 days ×
- -	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	25.00 x 25.00 25.00 x 25.00	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	4.00 4.00	#70-292 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	216.05 S$216.05 Qty 6+ S$172.55 Request Quote	3-5 days ×
30.00 30.00	λ/20 λ/20	- -	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	5.00 5.00	#34-362	284.20 S$284.20 Qty 6+ S$227.65 Request Quote	Contact Us ×
30.00 30.00	λ/20 λ/20	- -	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	5.00 5.00	#34-378	381.35 S$381.35 Qty 6+ S$303.77 Request Quote	3-5 days ×
30.00 30.00	λ/20 λ/20	- -	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	5.00 5.00	#34-394	316.10 S$316.10 Qty 6+ S$253.03 Request Quote	3-5 days ×
30.00 30.00	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	- -	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	5.00 5.00	#70-293 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	284.20 S$284.20 Qty 6+ S$227.65 Request Quote	3-5 days ×
- -	λ/20 λ/20	30.0 x 30.0 30.0 x 30.0	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	5.00 5.00	#34-363	284.20 S$284.20 Qty 6+ S$227.65 Request Quote	3-5 days ×
- -	λ/20 λ/20	30.0 x 30.0 30.0 x 30.0	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	5.00 5.00	#34-379	381.35 S$381.35 Qty 6+ S$303.77 Request Quote	Contact Us ×
- -	λ/20 λ/20	30.0 x 30.0 30.0 x 30.0	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	5.00 5.00	#34-395	316.10 S$316.10 Qty 6+ S$253.03 Request Quote	3-5 days ×
- -	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	30.00 x 30.00 30.00 x 30.00	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	5.00 5.00	#70-294 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	284.20 S$284.20 Qty 6+ S$227.65 Request Quote	3-5 days ×
40.00 40.00	λ/20 λ/20	- -	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	5.00 5.00	#34-364	340.75 S$340.75 Qty 6+ S$271.88 Request Quote	Contact Us ×
40.00 40.00	λ/20 λ/20	- -	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	5.00 5.00	#34-380	452.40 S$452.40 Qty 6+ S$361.77 Request Quote	3-5 days ×
40.00 40.00	λ/20 λ/20	- -	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	5.00 5.00	#34-396	416.15 S$416.15 Qty 6+ S$332.77 Request Quote	Contact Us ×
40.00 40.00	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	- -	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	5.00 5.00	#70-295 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	340.75 S$340.75 Qty 6+ S$272.60 Request Quote	3-5 days ×
- -	λ/20 λ/20	40.0 x 40.0 40.0 x 40.0	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	5.00 5.00	#34-365	340.75 S$340.75 Qty 6+ S$271.88 Request Quote	Contact Us ×
- -	λ/20 λ/20	40.0 x 40.0 40.0 x 40.0	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	5.00 5.00	#34-381	452.40 S$452.40 Qty 6+ S$361.77 Request Quote	Contact Us ×
- -	λ/20 λ/20	40.0 x 40.0 40.0 x 40.0	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	5.00 5.00	#34-397	416.15 S$416.15 Qty 6+ S$332.77 Request Quote	3-5 days ×
- -	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	40.00 x 40.00 40.00 x 40.00	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	5.00 5.00	#70-296 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	340.75 S$340.75 Qty 6+ S$272.60 Request Quote	3-5 days ×
50.00 50.00	λ/20 λ/20	- -	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	5.00 5.00	#34-366	363.95 S$363.95 Qty 6+ S$291.45 Request Quote	3-5 days ×
50.00 50.00	λ/20 λ/20	- -	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	5.00 5.00	#34-382	508.95 S$508.95 Qty 6+ S$406.72 Request Quote	3-5 days ×
50.00 50.00	λ/20 λ/20	- -	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	5.00 5.00	#34-398	464.00 S$464.00 Qty 6+ S$371.20 Request Quote	Contact Us ×
50.00 50.00	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	- -	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	5.00 5.00	#70-297 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	363.95 S$363.95 Qty 6+ S$291.45 Request Quote	Contact Us ×
- -	λ/20 λ/20	50.0 x 50.0 50.0 x 50.0	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	5.00 5.00	#34-367	363.95 S$363.95 Qty 6+ S$291.45 Request Quote	3-5 days ×
- -	λ/20 λ/20	50.0 x 50.0 50.0 x 50.0	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	5.00 5.00	#34-383	508.95 S$508.95 Qty 6+ S$406.72 Request Quote	3-5 days ×
- -	λ/20 λ/20	50.0 x 50.0 50.0 x 50.0	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	5.00 5.00	#34-399	464.00 S$464.00 Qty 6+ S$371.20 Request Quote	3-5 days ×
- -	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	50.00 x 50.00 50.00 x 50.00	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	5.00 5.00	#70-299 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	363.95 S$363.95 Qty 6+ S$291.45 Request Quote	3-5 days ×
75.00 75.00	λ/20 λ/20	- -	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	7.50 7.50	#34-368	761.25 S$761.25 Qty 6+ S$607.55 Request Quote	Contact Us ×
75.00 75.00	λ/20 λ/20	- -	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	7.50 7.50	#34-384	986.00 S$986.00 Qty 6+ S$787.35 Request Quote	3-5 days ×
75.00 75.00	λ/20 λ/20	- -	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	7.50 7.50	#34-400	913.50 S$913.50 Qty 6+ S$729.35 Request Quote	3-5 days ×
75.00 75.00	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	- -	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	7.50 7.50	#70-300 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	761.25 S$761.25 Qty 6+ S$607.55 Request Quote	3-5 days ×
- -	λ/20 λ/20	75.0 x 75.0 75.0 x 75.0	Ravg >95% @ 450 - 650nm R_avg >95% @ 450 - 650nm	Enhanced Aluminum (450-650nm) Enhanced Aluminum (450-650nm)	7.50 7.50	#34-369	761.25 S$761.25 Qty 6+ S$607.55 Request Quote	3-5 days ×
- -	λ/20 λ/20	75.0 x 75.0 75.0 x 75.0	R_avg >96% @ 700 - 2000nm R_avg >96% @ 2000 - 10,000nm	Protected Gold (700-10000nm) Protected Gold (700-10000nm)	7.50 7.50	#34-385	986.00 S$986.00 Qty 6+ S$787.35 Request Quote	3-5 days ×
- -	λ/20 λ/20	75.0 x 75.0 75.0 x 75.0	R_avg >98% @ 450 - 2000nm R_avg >98% @ 2000 - 10,000nm	Protected Silver (450-10000nm) Protected Silver (450-10000nm)	7.50 7.50	#34-401	913.50 S$913.50 Qty 6+ S$729.35 Request Quote	Contact Us ×
- -	λ/20 (flatness pre-coating) λ/20 (flatness pre-coating)	75.00 x 75.00 75.00 x 75.00	R_avg >85% @ 250 - 700nm R_avg >89% @ 250 - 450nm	UV Enhanced Aluminum (250-700nm) UV Enhanced Aluminum (250-700nm)	7.50 7.50	#70-301 New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else!	761.25 S$761.25 Qty 6+ S$607.55 Request Quote	3-5 days ×

Technical Information

Accessories

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Resources

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How do you measure the reflectivity of mirrors with a reflectivity less than 99.5%?

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Do you have mounts for square or rectangular optics?

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First Surface Mirror

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Reflection

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Specular

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Parity

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Basic Principles of Raman Scattering and Spectroscopy

Raman spectroscopy is a technique used to identify the chemical composition of samples based on how light scatters off of them. Learn more & view related optics

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Removing Protective Plastic Coating

A protective plastic coating protects a variety of our flat optics, such as optical windows, optical mirrors, and beamsplitters, from scratches during shipping.

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Bevel

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Parallelism

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Seamed Edge

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Surface Flatness

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How do I clean my optics?

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Clear Aperture (CA)

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Edmund Optics Global Manufacturing Facilities

Edmund Optics® (EO) manufactures millions of precision optical components and subassemblies every year in our 5 global manufacturing facilities.

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Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

Learn about the metrology that Edmund Optics® uses to guarantee the quality of all optical components and assemblies.

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Surface Quality

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λ/20 First Surface Mirrors

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What is the difference between a first-surface and a second-surface mirror?

You specified a first surface mirror but you seem to have sold me a second surface mirror. What happened?

What is a seamed edge?

What is the difference between &frac14; wave, 1/10 wave, and 1/20 wave mirrors?

Does the polarization of light change after reflecting off a mirror?

How do I clean my mirrors?

How do I mount a mirror to a mirror mount that doesn't have a clamp or retainer ring?

Angle of Incidence

Angle of Reflection

Cold Mirror

Eccentricity

Retroreflector

What is the difference between Protected Aluminum, Enhanced Aluminum, UV Enhanced Aluminum, Protected Gold, and Protected Silver?

How do you measure the reflectivity of mirrors with a reflectivity less than 99.5%?

Do you have mounts for square or rectangular optics?

First Surface Mirror

Reflection

Specular

Parity

Basic Principles of Raman Scattering and Spectroscopy

Removing Protective Plastic Coating

Bevel

Parallelism

Seamed Edge

Surface Flatness

How do I clean my optics?

Clear Aperture (CA)

Edmund Optics Global Manufacturing Facilities

Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

Surface Quality

What is the difference between ¼ wave, 1/10 wave, and 1/20 wave mirrors?