English  |
RSA25F1.0-640-12
Rising
Infrared Athermal Lens Description:
Infrared athermalization lenses usually have a fixed focal length,
No need to adjust focus during use,
So they are generally used in drones, surveillance and other occasions.
Depth of field is the range of the furthest distance and the closest distance that the lens can see clearly without focusing.
The depth of field is not only related to the focal length of the lens, F number, imaging quality and its set alignment imaging distance, but also related to the pixel size of the detector.
Generally speaking, the larger the F-number, the shorter the focal length, and the larger the pixel size of the detector, the larger the depth of field. With respect to different alignment planes, the range of depth of field is also different.
Infrared Athermal Lens Parameters
| Product Name | Infrared Athermal Lens |
| Focal Length | 25mm |
| F# | 1.0 |
| Wavelength | 8um-12um |
| Image Diagonal | 9.83mm |
| Detector | 640x512-12um |
| Average Transmission | ＞84% |
| Circular FOV | (H)17.4°x(D)14°x(D)22° |
| Back focus Distance | 12.5mm |
| Dimensions | 30.8mm / 33mm |
| Focus Type | Manual Focus |
| Focus Range | 1m to infinity |
| Mount Type | M25x0.5-6g |
| Weight | 43g |
| Operating Temperature | -20℃~+60℃ |
| Storage Temperature | -40℃~+80℃ |
| 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 Athermal Lens Description:
Infrared athermalization lenses usually have a fixed focal length,
No need to adjust focus during use,
So they are generally used in drones, surveillance and other occasions.
Depth of field is the range of the furthest distance and the closest distance that the lens can see clearly without focusing.
The depth of field is not only related to the focal length of the lens, F number, imaging quality and its set alignment imaging distance, but also related to the pixel size of the detector.
Generally speaking, the larger the F-number, the shorter the focal length, and the larger the pixel size of the detector, the larger the depth of field. With respect to different alignment planes, the range of depth of field is also different.
Infrared Athermal Lens Parameters
| Product Name | Infrared Athermal Lens |
| Focal Length | 25mm |
| F# | 1.0 |
| Wavelength | 8um-12um |
| Image Diagonal | 9.83mm |
| Detector | 640x512-12um |
| Average Transmission | ＞84% |
| Circular FOV | (H)17.4°x(D)14°x(D)22° |
| Back focus Distance | 12.5mm |
| Dimensions | 30.8mm / 33mm |
| Focus Type | Manual Focus |
| Focus Range | 1m to infinity |
| Mount Type | M25x0.5-6g |
| Weight | 43g |
| Operating Temperature | -20℃~+60℃ |
| Storage Temperature | -40℃~+80℃ |
| 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.
