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Optical glass window

Colorless optical glass is almost completely transparent in the visible and near-infrared bands, with high transmittance. It can change the propagation direction of light and the relative spectral distribution of ultraviolet, visible or infrared light.

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Description

Optical glass window
Colorless optical glass is almost completely transparent in the visible and near-infrared bands, with high transmittance. It can change the propagation direction of light and the relative spectral distribution of ultraviolet, visible or infrared light. There are mainly coronal optical glass (represented by K) and flint optical glass. The products are widely used in telescopes, microscopes, gun sight lenses, cameras, mobile phones, measuring instruments, analyzers, etc.

Processing capacity:
The optical glass window can be customized according to customer requirements.

Shape	Size Specification	Shape Accuracy	Surface Flatness	Parallel Accuracy	Coated Band
Window	10～100mm	+/-0.05mm	PV 0.15	10″	Visible Spectrum
Window	101～200mm	+/-0.05mm	PV 0.25	10″	Visible Spectrum
Window	201～300mm	+/-0.05mm	PV 0.5	30″	Visible Spectrum

Detection capability:
We have Zygo interferometer, several domestic spherical interferometers, plane interferometers, centrifuges, two-dimensional imagers, spectrophotometer, thickness gauge, 10000 feet and other testing equipment. A professional inspection team will escort your products.

Glass Material Equivalent Substitute
Name Of Glass Listed	Glass Number	Schott Equivalent	Ohara Equivalent	Cdgm Equivalent
N-BK7	517/642	N-BK7	S-BSL7	H-K9L
N-K5	522/595	N-K5	S-NSL 5	H-K50
N-PK51	529/770	N-PK51	–	–
N-SK11	564/608	N-SK11	S-BAL 41	H-BaK6
N-BAK4	569/561	N-BAK4	S-BAL 14	H-BaK7
N-BAK1	573/576	N-BAK1	S-BAL11	H-BaK8
N-SSK8	618/498	N-SSK8	S-BSM 28	–
N-PSK53A	618/634	N-PSK53A	S-PHM52	–
N-F2	620/364	N-F2	S-TIM 2	H-F4
S-BSM18	639/554	–	S-BSM18	H-ZK11
N-SF2	648/338	N-SF2	S-TIM 22	H-ZF1
N-LAK22	651/559	N-LAK22	S-LAL54	H-LaK10
S-BAH 11	667/483	–	S-BAH 11	H-ZBaF16
N-BAF10	670/472	N-BAF10	S-BAH 10	H-ZBaF52
N-SF5	673/322	N-SF5	S-TIM 25	H-ZF2
N-SF8	689/312	N-SF8	S-TIM 28	H-ZF10
N-LAK14	697/554	N-LAK14	S-LAL14	H-LAK51
N-SF15	699/301	N-SF15	S-TIM35	H-ZF11
N-BASF64	704/394	N-BASF64	–	–
N-LAK8	713/538	N-LAK8	S-LAL8	H-LAK7
S-TIH 18	722/293	–	S-TIH 18	–
N-SF10	728/284	N-SF10	S-TIH 10	H-ZF4
N-SF4	755/276	N-SF4	S-TIH4	H-ZF6
N-SF14	762/265	N-SF14	S-TIH 14	–
N-SF11	785/258	N-SF11	S-TIH 11	H-ZF13
SF65A	785/261	SF65A	S-TIH23	–
N-LASF45	800/350	N-LASF45	S-LAM66	H-ZLaF66
N-LASF44	803/464	N-LASF44	S-LAH 65	H-ZLaF50B
N-SF6	805/254	N-SF6	S-TIH 6	H-ZF7LA
N-SF57	847/238	N-SF57	S-TIH 53	H-ZF52
N-LASF9	850/322	N-LASF9	S-LAH71	–
S-NPH2	923/189	–	S-NPH2	–
N-SF66	923/209	N-SF66	–	–

Basic Values For All Glass Types
Glass Name	Refractive Index (nd)	Dispersion Coefficient (vd)	Density (g/cm3)	Coefficient Of Thermal Expansion*	* High Operating Temperature (°c)
CaF2	1.434	95.1	3.18	18.85	800
Fused Silica	1.458	67.7	2.2	0.55	1000
Schott BOROFLOAT®	1.472	65.7	2.2	3.25	450
S-FSL5	1.487	70.2	2.46	9	457
N-BK7	1.517	64.2	2.46	7.1	557
N-K5	1.522	59.5	2.59	8.2	546
B270/S1	1.523	58.5	2.55	8.2	533
Schott ZERODUR®	1.542	56.2	2.53	0.05	600
N-SK11	1.564	60.8	3.08	6.5	604
N-BAK4	1.569	56.1	3.1	7	555
N-BaK1	1.573	57.55	3.19	7.6	592
L-BAL35	1.589	61.15	2.82	6.6	489
N-SK14	1.603	60.6	3.44	7.3	649
N-SSK8	1.618	49.8	3.33	7.1	598
N-F2	1.62	36.4	3.61	8.2	432
BaSF1	1.626	38.96	3.66	8.5	493
N-SF2	1.648	33.9	3.86	8.4	441
N-LAK22	1.651	55.89	3.73	6.6	689
S-BaH11	1.667	48.3	3.76	6.8	575
N-BAF10	1.67	47.2	3.76	6.8	580
N-SF5	1.673	32.3	4.07	8.2	425
N-SF8	1.689	31.2	4.22	8.2	422
N-LAK14	1.697	55.41	3.63	5.5	661
N-SF15	1.699	30.2	2.92	8.04	580
N-BASF64	1.704	39.38	3.2	9.28	582
N-LAK8	1.713	53.83	3.75	5.6	643
N-SF18	1.722	29.3	4.49	8.1	422
N-SF10	1.728	28.4	3.05	7.5	454
S-TIH13	1.741	27.8	3.1	8.3	573
N-SF14	1.762	26.5	4.54	6.6	478
Sapphire**	1.768	72.2	3.97	5.3	2000
N-SF11	1.785	25.8	5.41	6.2	503
N-SF56	1.785	26.1	3.28	8.7	592
N-LASF44	1.803	46.4	4.46	6.2	666
N-SF6	1.805	25.39	3.37	9	605
N-SF57	1.847	23.8	5.51	8.3	414
N-LASF9	1.85	32.2	4.44	7.4	698
N-SF66	1.923	20.88	4	5.9	710
S-LAH79	2.003	28.3	5.23	6	699
ZnSe	2.403	N/A	5.27	7.1	250
Silicon	3.422	N/A	2.33	2.55	1500
Germanium	4.003	N/A	5.33	6.1	100

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