Optical Coating Capabilities

LightPath offers a variety of optical coatings to support your optical needs and achieve the best performance from your systems. Such coatings, covering from Visible to LWIR are available with optical elements fabricated by LightPath.

In addition to our standard coatings, we are happy to support your needs on any specific or custom coatings you might require.

Anti-Reflective (AR) Coatings

RangeReflectivitySubstrates
0.350-0.500µmRavg<0.6%, Tave>97% D-LaK6, Ellal12
0.400-0.600µmRavg<0.6%, Tave>97%ECO-550, D-ZK3, D-ZLaF52La, D-LaK6 , Ellal12
0.600-1.050µmRavg<0.6%, Tave>97%D-ZK3, D-ZLaF52La, ECO-550
0.633µm & 1-12µmRave <4.0% @ 1-12µm, Tave >50% @ 633nmZnSe
0.633µm & 3.39µmRave<0.75% @ 633, Rave <0.5% @ 3.39µmZnSe
0.633µm & 3.39µm & 10.6µmRave<0.5% (3.39 + 10.6), Rave <10% @ 633nmZnSe
0.700-0.900µmRavg1.5%, Tave>96%D-ZK3, D-ZLaF52La, ECO-550
1.0-12µmRave <4.5%, Tave >91%ZnSe
1.050-1.600µmRavg<0.6%, Tave>97%D-ZK3, D-ZLaF52La, ECO-550
1.064µm & 1.570µmRave <0.5%ZnS
1.064µm & 3-5µmR<2% @ 1064nm, Rave<1% @ 3-5µmBD6
1.300-1.700µmRavg<0.25%, Tave>97% D-ZK3, D-ZLaF52La, ECO-550
1.5-1.8µmTave >98%Silicon
1.5-1.8µmTave >99%S-TIM2
1.5-1.8µmTave >99%ZnS
1.5-1.8µmTave >99%ZnSe
1.5-3µmRave<1.0%, Tave >95%BD2
1.5-5µmRave <2.0%, Tave >95%ZnSe
1.5-5µmRave <2.0%, Tave >95%CaF2
1.5-5µmRave <2.0%, Tave >95%CdTe
1.5-5µmRave <2.0%, Tave >95%Silicon
1.5-5µmRave <2.0%, Tave >95%ZnS
1.5-5µmRave <2.0%, Tave >95%BaF2
1.5-5µmRave <2.0%, Tave >95%BD6
1.5-5µmTave >95%AMTIR-1
1.5-5µm & 8-14µmTave >90%ZnS
1.8-3µmRavg<1.0%, Tave >90% BD2
1.95-2.15µm & 3.9-4.1µm & 4.5-4.7µmRave <0.5%ZnSe
14-16µmRave <2.0%, Tave>80%Ge
2.0-13µmRave <4.0%, Tave>93%Ge
2.0-13µmRave <3.0%, Tave >90%ZnS
2.0-13µmRave <3.0%, Tave>93%ZnSe
2.0-6µmRave <0.75%Silicon
2-14µmRave <4.0%, Tave >92%ZnSe
3.39µmRave <0.5%Ge
3.39µmRave <0.5%ZnSe
3-12µmRave <2.5%, Tave >94%ZnSe
3-5µmRave <0.5%, Tave>97%GaAs
3-5µmRave <0.5%, Tave >97%Ge
3-5µmRave <0.75%, Tave > 95%IRG-202 / GASIR-1
3-5µmRave <1.0%Sapphire
3-5µmRave <0.5%, Tave >97%Silicon
3-5µmRave <0.75%, Tave >97%ZnS
3-5µmRave <0.75%, Tave >98%ZnSe
3-5µmRave <1.0%, Tave >95%BD2
3-5µmRave <1.0%, Tave >90% BD2
3-5µm @ 45degRave <1.25%Ge
3-5µm @ 45degRave <1.25%Silicon
3-5µm HDAR/HEARRave <0.5%, Tave >97%Silicon
3-5µm HDAR/HEARRave <0.5%, Tave >97%Ge
5-11µmTave >97%ZnS
5-11µmRave <1.0%ZnSe
5-13µmRave <1.5%, Tave > 93%IRG-202 / GASIR-1
5-8µmRave <0.75%Ge
5-8µmRavg<0.5%BD2
6.5-6.9µmRave <0.5%ZnSe
7.5-13µmRave<0.5%, Tave >97%CdTe
7-10µmRave <0.5%Ge
8-12µmRave<0.5%, Tave>97%GaAs
8-12µmRave <1.0%, Tave >97%Ge
8-12µmRave <0.75%, Tave > 95%IRG-202 / GASIR-1
8-12µmRave <0.5%IRG-24 / IG4
8-12µmRave <0.75%, Tave >97%ZnS
8-12µmRave <0.5%, Tave >98%ZnSe
8-12µmRave <1.0%, Tave >95%BD2
8-12µmRave <0.75%, Tave >96%AMTIR-1
8-12µmRave <0.6%, Tave >90% BD2
8-12µmRave<0.75%, Tave >95%BD6
8-12µm @ 45degRave <1.25%Ge
8-12µm HDAR/HEARRave <2.0%, Tave >96%ZnSe
8-12µm HDAR/HEARRave <1.5%, Tave >95%Ge

Beam Splitter Coatings

RangeReflectivitySubstrates
1.5-5µm @ 45deg50%T (+/- 10%) / 50%R (+/- 10%)CaF2
2-5µm @ 45deg50%T (+/- 15%) / 50%R (+/- 15%)Sapphire
2-8µm @ 45deg50%T (+/- 10%) / 50%R (+/- 10%)CaF2
7-14µm @ 45deg50%T (+/- 10%) / 50%R (+/- 10%)ZnSe

DLC Coatings

RangeReflectivitySubstrates
8-12µm - DLC/ARTave >85%BD6
8-12µm - DLC/ARRave <3.0%BD2
DLC @ 3-5µmRave <4.0% , Tave: >94%Ge
DLC @ 3-5µmRave <4.0% on DLC , Tave >93%Silicon
DLC @ 8-12µmRave <3.0%, Tave >90%Ge

Reflective Coatings

RangeReflectivitySubstrates
Bare Gold Front Surface MirrorMisc
Protected Aluminum Front Surface MirrorMisc
Protected Gold Front Surface MirrorMisc
Protected Silver Front Surface MirrorMisc
Rear Surface Aluminum MirrorMisc
Rear Surface Silver MirrorMisc

Moisture Protective Coatings

RangeReflectivitySubstrates
0.5-15µmNaCl, KBr

Dichroic Coatings

RangeReflectivitySubstrates
7-14µmBD6
7-14µmBD6
Gold DichroBK7
Platinum DichroGe