English  |
RS4.6-640-17-140°
Rising
Infrared Fish Lens Description:
Focal Length 4.6mm F1.0 Infrared Fish Lens Germanium Wide-angle Lens For 640x480-17um Detector.
8-14um Long Wave Infrared Fish Lens For Monitor Camera, Infrared Sights, Thermal Imager, Infrared Camera, etc.
The refractive index of infrared materials changes significantly with temperature, much more so than visible light glass. This is important to consider for infrared systems used in high-precision detection and early warning, as they need to operate in a temperature range of -40°C to +60°C. The performance of these systems can be greatly affected by changes in ambient temperature.
Infrared Fish Lens Parameters:
| Product Name | Infrared Fish Lens |
| Focal Length | 4.6mm |
| F# | 1.0 |
| Image Diagonal | 13.6mm |
| Detector | 640x480-17um |
| Average Transmission | ＞87% |
| Circular FOV | (H)142°x(V)101°x(D)178° |
| Back Focus Distance | 14.5mm |
| Back Working Distance | 7.5mm |
| Back Focus Length | 8mm |
| Dimensions | 49mm / 33.65mm |
| Focus Type | Manual Focus |
| Focus Range | 0.5m to infinity |
| Mount Type | M45x1-6g |
| Weight | 100g |
| Operating Temperature | -45℃ to +65℃ |
| Storage Temperature | -40℃ to +60℃ |
| External Coating | AR Coating Available |
Infrared Lens Processing Equipment:
1. Inner carving test platform;
2. Microscope;
3. Opto Tech aspheric processing;
4. Polishing machine;
5. Thickness Gauge;
6. Ultrasonic Cleaner;
7. Workshop;
8. Interferometer;
9. High and low tempera ture test chamber;
10. High polishing machine;
11. Optical bench;
12. Raul milling;
13. Atomic force microscope;
14. Centralinstrument;
15. Hand Grinding and Polishing Machine;
FAQ:
What Is An AR Coating?
Anti-reflective coating (English: Anti-reflective coating, AR) is a surface optical coating that increases transmittance by reducing light reflection. In complex optical systems, it can improve contrast by reducing scattered light in the system.
Many coatings include transparent film structures with different refractive indices. The thickness of the film determines the wavelength of the reflected light that it acts on. When light is reflected twice on the AR coating, it will interfere with the original reflected light, thereby weakening the reflected light. According to the conservation of energy, the energy of light does not change. Therefore, when the reflected light decreases, the transmitted light increases. This is the principle of AR coating. Generally, when choosing an AR coating, you need to determine the wavelength, such as infrared, visible and ultraviolet.
Infrared Fish Lens Description:
Focal Length 4.6mm F1.0 Infrared Fish Lens Germanium Wide-angle Lens For 640x480-17um Detector.
8-14um Long Wave Infrared Fish Lens For Monitor Camera, Infrared Sights, Thermal Imager, Infrared Camera, etc.
The refractive index of infrared materials changes significantly with temperature, much more so than visible light glass. This is important to consider for infrared systems used in high-precision detection and early warning, as they need to operate in a temperature range of -40°C to +60°C. The performance of these systems can be greatly affected by changes in ambient temperature.
Infrared Fish Lens Parameters:
| Product Name | Infrared Fish Lens |
| Focal Length | 4.6mm |
| F# | 1.0 |
| Image Diagonal | 13.6mm |
| Detector | 640x480-17um |
| Average Transmission | ＞87% |
| Circular FOV | (H)142°x(V)101°x(D)178° |
| Back Focus Distance | 14.5mm |
| Back Working Distance | 7.5mm |
| Back Focus Length | 8mm |
| Dimensions | 49mm / 33.65mm |
| Focus Type | Manual Focus |
| Focus Range | 0.5m to infinity |
| Mount Type | M45x1-6g |
| Weight | 100g |
| Operating Temperature | -45℃ to +65℃ |
| Storage Temperature | -40℃ to +60℃ |
| External Coating | AR Coating Available |
Infrared Lens Processing Equipment:
1. Inner carving test platform;
2. Microscope;
3. Opto Tech aspheric processing;
4. Polishing machine;
5. Thickness Gauge;
6. Ultrasonic Cleaner;
7. Workshop;
8. Interferometer;
9. High and low tempera ture test chamber;
10. High polishing machine;
11. Optical bench;
12. Raul milling;
13. Atomic force microscope;
14. Centralinstrument;
15. Hand Grinding and Polishing Machine;
FAQ:
What Is An AR Coating?
Anti-reflective coating (English: Anti-reflective coating, AR) is a surface optical coating that increases transmittance by reducing light reflection. In complex optical systems, it can improve contrast by reducing scattered light in the system.
Many coatings include transparent film structures with different refractive indices. The thickness of the film determines the wavelength of the reflected light that it acts on. When light is reflected twice on the AR coating, it will interfere with the original reflected light, thereby weakening the reflected light. According to the conservation of energy, the energy of light does not change. Therefore, when the reflected light decreases, the transmitted light increases. This is the principle of AR coating. Generally, when choosing an AR coating, you need to determine the wavelength, such as infrared, visible and ultraviolet.
