Reducing Color Temperature Glass SJB Series
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 Glass
| Type |
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 Glass
| Type |
Bubble |
Stripe |
Stress |
|
SJB20 |
C |
3C |
3 |
|
SJB80 |
C |
3C |
3 |
|
SJB100 |
C |
3C |
3 |
|
SJB130 |
C |
3C |
3 |
|
SJB140 |
C |
3C |
3 |
Shijiazhuang Zeyuan Optics Co., Ltd.
Service Line: +86 13138088351
Add:Xiqiaotou Industrial Area, Shenze County,
Shijiazhuang, Hebei, China
0311-83591469
+86 15128127697
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