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RSA24F1.0-640-12
Rising
This 24mm F1.0 infrared non-cooled long-wave infrared (typically operating in the 8 to 12 micron wavelength range) lens is specifically designed for 640×512 resolution and 12 micron pixel size non-cooled infrared detectors.
It can operate stably within a wide temperature range of -40°C to +80°C, without the need for motors or manual focusing, and always maintains a clear image.
The F1.0 large aperture means it has extremely high light flux, making it highly suitable for obtaining high-quality thermal imaging in low temperature differences and low light conditions.
| Focal Length | 24mm |
| F# | 1.0 |
| Image Diagonal | 9.83mm |
| Average Transmission | ＞90% |
| Circular FOV | (H)18°x(V)14.5°x(D)23° |
| Back Focus Distance | 12.5mm |
| Back Working Distance | 4.5mm |
| Back Focus Length | 12.68mm |
| Dimensions | 31.2mm |
| Focus Type | Fixed Focal |
| Focus Range | 0.3m to infinity |
| Mount Type | M22x0.5-6g |
| Detector | 640x512-12um |
| Materials | Germanium or Chalcogen (IG206) |
| Weight | 34g |
| Operating Temperature | -40℃ to +80℃ |
| Storage Temperature | -40℃ to +80℃ |
| External Coating | AR Coating Available |
Feature | Specification | Key Advantage |
Large Aperture (F1.0) | Very large entrance pupil diameter. | Significantly improves system SNR (Signal-to-Noise Ratio) and sensitivity, enabling superior image quality in low-light or low-ΔT conditions. |
Athermalization | Employs special optical materials (e.g., Surful, Chalcogenide glass) and mechanical design to compensate for thermal drift. | Maintains focus without motorized or manual adjustment from -40°C to +80°C. High reliability, zero power consumption, ideal for harsh environments. |
Wide Angle of View | The 24mm focal length provides a wide Field of View (e.g., ~18.0° x 14.5° for a 640x512-12μm detector) | Enables observation of a larger area in a single frame, perfect for wide-area surveillance and search. |
Environmental Durability | AR Coating | Abrasion and corrosion-resistant |
Compact & Lightweight | Athermalized fixed-focus design allows for a relatively compact structure. | Facilitates integration into various size-constrained platforms (e.g., handheld devices, UAVs). |
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.
This 24mm F1.0 infrared non-cooled long-wave infrared (typically operating in the 8 to 12 micron wavelength range) lens is specifically designed for 640×512 resolution and 12 micron pixel size non-cooled infrared detectors.
It can operate stably within a wide temperature range of -40°C to +80°C, without the need for motors or manual focusing, and always maintains a clear image.
The F1.0 large aperture means it has extremely high light flux, making it highly suitable for obtaining high-quality thermal imaging in low temperature differences and low light conditions.
| Focal Length | 24mm |
| F# | 1.0 |
| Image Diagonal | 9.83mm |
| Average Transmission | ＞90% |
| Circular FOV | (H)18°x(V)14.5°x(D)23° |
| Back Focus Distance | 12.5mm |
| Back Working Distance | 4.5mm |
| Back Focus Length | 12.68mm |
| Dimensions | 31.2mm |
| Focus Type | Fixed Focal |
| Focus Range | 0.3m to infinity |
| Mount Type | M22x0.5-6g |
| Detector | 640x512-12um |
| Materials | Germanium or Chalcogen (IG206) |
| Weight | 34g |
| Operating Temperature | -40℃ to +80℃ |
| Storage Temperature | -40℃ to +80℃ |
| External Coating | AR Coating Available |
Feature | Specification | Key Advantage |
Large Aperture (F1.0) | Very large entrance pupil diameter. | Significantly improves system SNR (Signal-to-Noise Ratio) and sensitivity, enabling superior image quality in low-light or low-ΔT conditions. |
Athermalization | Employs special optical materials (e.g., Surful, Chalcogenide glass) and mechanical design to compensate for thermal drift. | Maintains focus without motorized or manual adjustment from -40°C to +80°C. High reliability, zero power consumption, ideal for harsh environments. |
Wide Angle of View | The 24mm focal length provides a wide Field of View (e.g., ~18.0° x 14.5° for a 640x512-12μm detector) | Enables observation of a larger area in a single frame, perfect for wide-area surveillance and search. |
Environmental Durability | AR Coating | Abrasion and corrosion-resistant |
Compact & Lightweight | Athermalized fixed-focus design allows for a relatively compact structure. | Facilitates integration into various size-constrained platforms (e.g., handheld devices, UAVs). |
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.
