IR Filter can cut-off infrared rays reached to sensor. By installed IR Filter to the lens unit or holder, it will be able to eliminate an appeared error such as flickering Image while taking a picture. Alpha Optik produce the circle and square filter with each grade of Mega Pixel (20um) and VGA (30 um) with a custom-designing.
Alpha Optik IR cut-off filter can sharply cut infrared ray.
 |
 |
 |
 |
 |
 |
 |
 |
 |
| optical polishing | compound machine | coating machine |
 |
 |
 |
| quartz cutting | ultrasonic cleaning | cutting machine |
There is the specialist crystal technology: from cutting, polishing, flatness technology, cleaning, coating, combining technology…
Angle cutting tolerance improving from +/-0.3’ to +/-0.1’;
Thickness tolerance improving from +/-0.05 TO +/- 0.025mm, and cutting speed improving from 1.2mm/H to 9mm/H, all by ourself-made Multi-cutting machine.
The flatness technology can let the 4 angle and 8 sides be polishing at the same time. And the quality can be improved about 50%;
 |
 |
 |
| Iterm | Standard | Special | ||
| Size of Substrate | Size | 1/2sensor | 9.2X10.4, 11X12(mm) | Customized |
| 1/3sensor | 7.3X8.2, 8.2X8.8, 9X10(mm) | Customized | ||
| 1/4sensor | 6.5X7.3, 7.3X7.8(mm) | |||
| 1/6sensor | 5.3X6.0, 5.8X6.3(mm) | Customized | ||
| Tolerance | ±0.1mm | – | ||
| Thickness/quality | Thickness tolerance | 0.30±0.02mm | ||
| 0.40±0.02mm | ||||
| 0.50±0.03mm | ||||
| 0.55±0.03mm | ||||
| 0.70±0.05mm | Customized | |||
| Surface roughness | ±0.05mm,±0.03mm | – | ||
| Coating | Single coating | Reflect 1.5% max./550nm | – | |
| Multi coating | Reflect 1.0% max./450-650nm | – | ||
| Chip and dot | Under 30um | – | ||
| Efficiency Scopes | 1mm to the side | Customized | ||
| Reliability (60℃,90%) | Two side mult-coating | 300H,500H | – | |
| IR cut coating | 300H | Customized | ||
| Model | Specification | Description | CCD models | ||
| SHARP | SONY | ||||
| BBF-001 | 8.8*8.2*1.63 | 1/3 of a single crystal film | 2321/2311 | 255/405 | |
| BBF-002 | 8.8*8.2*1.63 Day and night | 1/3 of a single crystal film | 2321/2311 | 255/405 | |
| BBF-003 | 7.8*7.3*1.22 | 1/4 of a single crystal film | 2421/2411 | 227 | |
| BBF-004 | 7.8*7.3*1.22 Day and night | 1/4 of a single crystal infrared flu tablets | 2421/2411 | 227 | |
| BBF-005 | 8.8*8.2*1.22 | 1/3 of a single crystal film | 2421/2411 | 227 | |
| BBF-006 | 8.8*8.2*1.22Day and night | 1/3 of a single crystal infrared flu tablets | 2421/2411 | 227 | |
| BBF-007 | 8.8*8.2*2.78 | 1 / 3 double-crystal films | 2321/2311 | 255/405 | |
| BBF-008 | 8.8*8.2*2.78 Day and night | 1/3 double-crystal infrared flu tablets | 2321/2311 | 255/405 | |
| BBF-009 | 8.8*8.2*1.08 | 1/3 of a single crystal film | 2361 | 259/409 | |
| BBF-010 | 8.8*8.2*1.08 Day and night | 1/3 of a single crystal infrared flu tablets | 2361 | 259/409 | |
| BBF-011 | 8.8*8.2*2.58 | Three-crystal | 2361 | 259/409 | |
| BBF-012 | 8.8*8.2*2.58 Day and night | Sense of three-crystal infrared | 2361 | 259/410 | |
| BBF-013 | 8.8*8.2*0.7 | Common type of optical glass | |||
| BBF-014 | 8.8*8.2*0.7 Day and night | Day and night optical glass type | |||
