Colored Glass Filters
COLORED GLASS FILTERS
Light Balancing Filters (LA, LB)
The features of these filters include gradually increasing or decreasing the transmittance in the visible range.
This type of filter is used for converting or controlling color temperature when photographing.
Adjust the polished thickness to create a filter with the capacity for any color temperature conversion.
Application: Camera, Inspection Device
Images: LA20 / LA140 / LB20 / LB165 from top
Transmittance
![[Transmission simulation software] This software facilitates obtaining data of spectral transmittance characteristics after changing the thickness of the glass.](../common/images/bnr_simulationsoft.jpg)
Light Balancing Filter: Data
| Item | Standard Value | Color specification (Standard illuminants A) | Thickness | Refractive Index | Chemical property | Thermal properties | Mechanical properties | Specific gravity | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| V(mired) | x | y | mm | 600nm | DW | DA | Tg | Ts | α -30/70 | α 100/300 | HK | FA | s | |
 LA20 | +20±5 | 0.467 | 0.408 | – | 1.547 | 2 | 1 | 505 | 545 | 89 | 102 | 520 | 130 | 2.73 |
| LA40 | +40±5 | 0.469 | 0.413 | – | 1.554 | 2 | 1 | 505 | 550 | 88 | 102 | 520 | 130 | 2.76 |
| E-LA80 | +80±5 | 0.490 | 0.415 | – | 1.526 | 3 | 1 | 510 | 560 | 100 | 113 | 530 | 130 | 2.67 |
| E-LA100 | +100±5 | 0.500 | 0.415 | – | 1.525 | 3 | 1 | 510 | 560 | 100 | 113 | 530 | 130 | 2.67 |
| E-LA120 | +120±5 | 0.510 | 0.415 | – | 1.524 | 3 | 1 | 515 | 565 | 99 | 110 | 530 | 130 | 2.68 |
| E-LA140 | +140±5 | 0.519 | 0.415 | – | 1.524 | 3 | 1 | 515 | 565 | 99 | 110 | 530 | 130 | 2.68 |
| E-LA200 | +200±5 | 0.545 | 0.411 | – | 1.529 | 3 | 1 | 515 | 565 | 99 | 110 | 530 | 130 | 2.68 |
| Item | Standard Value | Color specification (Standard illuminants A) | Thickness | Refractive Index | Chemical property | Thermal properties | Mechanical properties | Specific gravity | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| V(mired) | x | y | mm | 600nm | DW | DA | Tg | Ts | α -30/70 | α 100/300 | HK | FA | s | |
| LB20 | -20±5 | 0.433 | 0.406 | – | 1.522 | 3 | 1 | 470 | 515 | 95 | 117 | 490 | 110 | 2.81 |
| LB40 | -40±5 | 0.417 | 0.404 | – | 1.509 | 2 | 1 | 460 | 515 | 92 | 115 | 490 | 110 | 2.81 |
| LB80 | -80±5 | 0.388 | 0.398 | – | 1.541 | 2 | 1 | 460 | 510 | 99 | 116 | 490 | 110 | 2.83 |
| LB100 | -100±5 | 0.380 | 0.384 | – | 1.534 | 2 | 1 | 460 | 505 | 97 | 114 | 490 | 110 | 2.81 |
| LB120 | -120±5 | 0.365 | 0.379 | – | 1.517 | 2 | 1 | 480 | 535 | 94 | 105 | 520 | 130 | 2.57 |
| LB140 | -140±5 | 0.353 | 0.371 | – | 1.513 | 1 | 1 | 480 | 535 | 95 | 107 | 520 | 130 | 2.57 |
| LB200 | -200±7 | 0.316 | 0.342 | – | 1.514 | 1 | 1 | 480 | 530 | 92 | 105 | 520 | 130 | 2.57 |
* The listed data are standard values. As we are always improving our products, the data listed are subject to change without notice.