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AboutShijiazhuang Zeyuan Optics Co., Ltd. was founded in 1989. We are professional manufacturer integrating colored glass melting and optical filters producing.
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ProductsOur main products include heat absorbing filters, neodymium filter glass, rising color temperature glass, IR optical glass, UV pass optical filter glass, colored optical filters, neutral density filters, bandpass filters...
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BlogsOver the past thirty years since its establishment, our company has always adhered to the entrepreneurial spirit of proactive, innovative, perseverance to provide high-quality products and perfect services to many customers in domestic and abroad.
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ContactShijiazhuang Zeyuan Optics Co., Ltd. was founded in 1989. We are professional manufacturer integrating colored glass melting and optical filters producing.
Product
Reducing Color Temperature Glass SJB Series
Focus on Colored Glass Melting and Optical Filters Manufacturing for Over 30 years'.
Keywords：
- Product description
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Our products reducing color temperature glass SJB20-140 are respectively equivalent to optical filter glass FG18, FG16, FG15 of Germany Schott and optical glass LA20-140 of Japan Hoya.
The color temperature glass, also called light balancing filter glass, is selective absorption glass which include rising color temperature glass and decreasing color temperature filter glass, and its transformation ability is expressed by the Mired value. The color temperature falling glass is amber color with a positive Millard value. Usually, R&D people adjust the polished thickness to create a filter with the capacity for any color temperature conversion.
Main Application: Camera Lens, Inspection Device, Optical Instruments, etc.
Characteristics of Reducing Color Temperature Glass
Type Thickness(mm)
A[2856k]
D65
Chemical Stability ND
α×10-7
(/℃)Tg
(℃)Ts
(℃)S
x
y
Y
x
y
Y
DA
DW
SJB20
2
0.469
0.413
87.8
0.339
0.349
83.6
2
3
1.525
87
571
642
2.63
SJB80
2
0.494
0.415
75.3
0.372
0.368
69.2
2
3
1.525
87
571
642
2.63
SJB100
2
0.51
0.41
67.8
0.395
0.381
61
2
3
1.525
103
513
591
2.7
SJB130
2
0.548
0.409
52.1
0.455
0.405
44.2
2
3
1.525
103
513
591
2.7
SJB140
2
2
3
1.525
103
513
591
2.7
Technical Standard of Reducing Color Temperature GlassType Thickness(mm)
υ
Standard Tolerance SJB20
2
20
20±2
SJB80
2
80
80±8
SJB100
2
100
100±10
SJB130
2
130
130±13
SJB140
2
140
140±14
Quality Level of Reducing Color Temperature GlassType Bubble Stripe
Stress SJB20
C
3C
3
SJB80
C
3C
3
SJB100
C
3C
3
SJB130
C
3C
3
SJB140
C
3C
3
Product Inquiry
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OPTICAL LENS EXPERT
We truly realize one-stop service from raw material melting to end product production, and provide customers with a full range of technical solutions.
CONTACTEZ-NOUS
Tel/WhatsApp: +86-13722872933
Email: zyoptics@zygx.cn
Add: Xiqiaotou Industrial Area, Shenze County, Shijiazhuang, Hebei, China
SUIVEZ-NOUS
