| OPSQ-30S03-1-5 30 x 30 mm UVFS Square Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Rectangular |
| OPSQ-30S05-10-5 30 x 30 mm UVFS Square Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Rectangular |
| OPSQ-25S2.3-0.5-10 25 x 25 mm UVFS Square Optical Parallel Flat Window; t=2.3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Rectangular |
| OPB-30S01-1-5 30 x 30 mm N-BK7 Square Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-50S08-10-5 50 x 50 mm N-BK7 Square Optical Parallel Flat Window; t=8 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-50S08-P 50 x 50 mm N-BK7 Square Optical Parallel Flat Window; t=8 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-20S05-P 20 x 20 mm N-BK7 Square Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-25S05-20-2 25 x 25 mm N-BK7 Square Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-20S02-1-5 20 x 20 mm N-BK7 Square Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-30S05-4-5 30 x 30 mm N-BK7 Square Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-10S03-P 10 x 10 mm N-BK7 Square Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-15S03-20-2 15 x 15 mm N-BK7 Square Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-15S03-1-5 15 x 15 mm N-BK7 Square Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-50S08-1-5 50 x 50 mm N-BK7 Square Optical Parallel Flat Window; t=8 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-10S02-P 10 x 10 mm N-BK7 Square Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-15S02-1-5 15 x 15 mm N-BK7 Square Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFSQ-20S06-20 20 x 20 mm UVFS Square Precision Ground Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Rectangular |
| OFB-20S03-4 20 x 20 mm N-BK7 Square Precision Ground Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFB-20S05-10 20 x 20 mm N-BK7 Square Precision Ground Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-15S05-4-5 15 x 15 mm N-BK7 Square Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-10S01-P 10 x 10 mm N-BK7 Square Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-25S02-1-5 25 x 25 mm N-BK7 Square Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-15S02-P 15 x 15 mm N-BK7 Square Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-40S06-1-5 40 x 40 mm N-BK7 Square Optical Parallel Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-50S02-P 50 x 50 mm N-BK7 Square Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-10S05-4-5 10 x 10 mm N-BK7 Square Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-25S01-1-5 25 x 25 mm N-BK7 Square Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-15S05-P 15 x 15 mm N-BK7 Square Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-30S02-1-5 30 x 30 mm N-BK7 Square Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-10S02-10-5 10 x 10 mm N-BK7 Square Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-30S03-4-5 30 x 30 mm N-BK7 Square Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-15S01-P 15 x 15 mm N-BK7 Square Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-25S01-P 25 x 25 mm N-BK7 Square Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFB-15S05-4 15 x 15 mm N-BK7 Square Precision Ground Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFB-20S05-4 20 x 20 mm N-BK7 Square Precision Ground Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFSQ-30S06-20 30 x 30 mm UVFS Square Precision Ground Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Rectangular |
| OFB-10S05-20 10 x 10 mm N-BK7 Square Precision Ground Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-20S05-10-5 20 x 20 mm N-BK7 Square Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-15S02-10-5 15 x 15 mm N-BK7 Square Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-25S05-1-5 25 x 25 mm N-BK7 Square Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-30S01-P 30 x 30 mm N-BK7 Square Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-20S01-P 20 x 20 mm N-BK7 Square Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-50S03-1-5 50 x 50 mm N-BK7 Square Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-10S01-1-5 10 x 10 mm N-BK7 Square Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-10S03-4-5 10 x 10 mm N-BK7 Square Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-25S03-10-5 25 x 25 mm N-BK7 Square Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-40S06-4-5 40 x 40 mm N-BK7 Square Optical Parallel Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFB-10S05-10 10 x 10 mm N-BK7 Square Precision Ground Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFB-15S03-10 15 x 15 mm N-BK7 Square Precision Ground Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFB-20S03-10 20 x 20 mm N-BK7 Square Precision Ground Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFSQ-25S06-20 25 x 25 mm UVFS Square Precision Ground Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Rectangular |
| OFB-30S05-10 30 x 30 mm N-BK7 Square Precision Ground Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-40S06-20 40 x 40 mm Hard Glass Square Precision Polished Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-150S20-10 150 x 150 mm Hard Glass Square Precision Polished Flat Window; t=20 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-50S08-20 50 x 50 mm Hard Glass Square Precision Polished Flat Window; t=8 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFSQ-2030R06-20 20 x 30 mm UVFS Rectangular Precision Ground Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Rectangular |
| OFPXP-5060R10-4 50 x 60 mm Hard Glass Rectangular Precision Polished Flat Window; t=10 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-6080R12-1 60 x 80 mm Hard Glass Rectangular Precision Polished Flat Window; t=12 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-6080R12-20 60 x 80 mm Hard Glass Rectangular Precision Polished Flat Window; t=12 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-3040R06-10 30 x 40 mm Hard Glass Rectangular Precision Polished Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-3040R06-1 30 x 40 mm Hard Glass Rectangular Precision Polished Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-6080R12-10 60 x 80 mm Hard Glass Rectangular Precision Polished Flat Window; t=12 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFB-20C03-10 20 mm Dia. N-BK7 Round Precision Ground Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFBP-40C06-10 40 mm Dia. N-BK7 Round Precision Polished Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFB-15C05-20 15 mm Dia. N-BK7 Round Precision Ground Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFSQP-50C10-20 50 mm Dia. UVFS Round Precision Polished Flat Window; t=10 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OFBP-30C05-20 30 mm Dia. N-BK7 Round Precision Polished Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFPXP-150C20-4 150 mm Dia. Hard Glass Round Precision Polished Flat Window; t=20 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFPXP-60C10-4 60 mm Dia. Hard Glass Round Precision Polished Flat Window; t=10 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFPXP-80C12-1 80 mm Dia. Hard Glass Round Precision Polished Flat Window; t=12 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| S-OPB-50C05-10-5 50 mm Dia. N-BK7 Reasonable Round Optical Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OPB-40C01-1-5 40 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OPB-130C18-4-5 130 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=18 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OPB-25C05-4-5 25 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OPB-40C03-P 40 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFPXP-100S15-10 100 x 100 mm Hard Glass Square Precision Polished Flat Window; t=15 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-50S08-4 50 x 50 mm Hard Glass Square Precision Polished Flat Window; t=8 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFB-2535R05-4 25 x 35 mm N-BK7 Rectangular Precision Ground Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-4050R08-20 40 x 50 mm Hard Glass Rectangular Precision Polished Flat Window; t=8 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-80100R15-1 80 x 100 mm Hard Glass Rectangular Precision Polished Flat Window; t=15 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFPXP-5060R10-20 50 x 60 mm Hard Glass Rectangular Precision Polished Flat Window; t=10 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OFSQ-10C06-20 10 mm Dia. UVFS Round Precision Ground Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OFB-15C05-10 15 mm Dia. N-BK7 Round Precision Ground Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFB-20C05-20 20 mm Dia. N-BK7 Round Precision Ground Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFB-12.7C05-10 12.7 mm Dia. N-BK7 Round Precision Ground Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFBP-40C06-1 40 mm Dia. N-BK7 Round Precision Polished Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFBP-25C05-20 25 mm Dia. N-BK7 Round Precision Polished Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFPXP-80C12-10 80 mm Dia. Hard Glass Round Precision Polished Flat Window; t=12 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OFPXP-60C10-1 60 mm Dia. Hard Glass Round Precision Polished Flat Window; t=10 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| S-OPB-50C08-10-5 50 mm Dia. N-BK7 Reasonable Round Optical Flat Window; t=8 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| S-OFB-15S05-10 15 x 15 mm N-BK7 Reasonable Square Optical Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| S-OFB-1015R03-10 10 x 15 mm N-BK7 Reasonable Rectangular Optical Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| S-OFB-15S03-10 15 x 15 mm N-BK7 Reasonable Square Optical Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Rectangular |
| OPB-40C06-10-5 40 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OPB-10C05-10-5 10 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OPB-20C03-4-5 20 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OPB-80C12-4-5 80 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=12 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OPB-10C05-P 10 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OPB-100C10-10-5 100 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=10 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| OPB-50.8C05-4-5 50.8 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |