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RSA7.5F1.2-640-12
Rising
Infrared Athermal Lens Description:
Focal Length 7.5mm F1.2 Long Wave Infrared Germanium Lens Athermal Lens.
Fixed focal length, suitable for places where it is difficult to focus, such as drones and surveillance and other urban areas.
Characteristics of Infrared Lens:
Our Infrared Lens consist of manual focus, fixed focus, and motorized LWIR lenses, with focal lengths ranging from 3.8 to 250. We offer various interface options, including M34x0.5, M45x1, M34x0.5, M34x0.75, c-mount, and flange. The back working distance of these lenses varies from 13.3 to 61.26.
Germanium is commonly utilized for LWIR lenses. Its exceptional durability, chemically inert properties, and high Knoop hardness make it a favorable choice for harsh environments. However, germanium lenses may experience significant defocus due to thermal drift in specific conditions. In situations where temperature changes are anticipated, we recommend our ZnSe LWIR lenses, which offer more stable focusing even with large temperature variations.
Our LWIR zoom lenses deliver sharp, high-resolution images throughout the entire zoom range, making them perfect for machine vision applications that require detailed imagery. Both discrete and continuous zoom lenses are available.
Infrared Athermal Lens Parameters:
| Product Name | Infrared Athermal Lens |
| Focal Length | 7.5mm |
| F# | 1.2 |
| Image Diagonal | 9.84mm |
| Detector | 640x512-12um |
| Average Transmission | ＞92% |
| Circular FOV | (H)58.4°x(V)46.8°x(D)74.6° |
| Back Focus Distance | 15mm |
| Back Working Distance | 8.3mm |
| Back Focus Length | 9.39mm |
| Dimensions | 30mm / 33.43mm |
| Focus Type | Fixel Focal |
| Focus Range | 0.3m to infinity |
| Mount Type | M20x0.5-6g |
| Weight | 33g |
| Operating Temperature | -40℃ to +80℃ |
| Storage Temperature | -40℃ to +80℃ |
| External Coating | AR Coating Available |
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:
Focal Length 7.5mm F1.2 Long Wave Infrared Germanium Lens Athermal Lens.
Fixed focal length, suitable for places where it is difficult to focus, such as drones and surveillance and other urban areas.
Characteristics of Infrared Lens:
Our Infrared Lens consist of manual focus, fixed focus, and motorized LWIR lenses, with focal lengths ranging from 3.8 to 250. We offer various interface options, including M34x0.5, M45x1, M34x0.5, M34x0.75, c-mount, and flange. The back working distance of these lenses varies from 13.3 to 61.26.
Germanium is commonly utilized for LWIR lenses. Its exceptional durability, chemically inert properties, and high Knoop hardness make it a favorable choice for harsh environments. However, germanium lenses may experience significant defocus due to thermal drift in specific conditions. In situations where temperature changes are anticipated, we recommend our ZnSe LWIR lenses, which offer more stable focusing even with large temperature variations.
Our LWIR zoom lenses deliver sharp, high-resolution images throughout the entire zoom range, making them perfect for machine vision applications that require detailed imagery. Both discrete and continuous zoom lenses are available.
Infrared Athermal Lens Parameters:
| Product Name | Infrared Athermal Lens |
| Focal Length | 7.5mm |
| F# | 1.2 |
| Image Diagonal | 9.84mm |
| Detector | 640x512-12um |
| Average Transmission | ＞92% |
| Circular FOV | (H)58.4°x(V)46.8°x(D)74.6° |
| Back Focus Distance | 15mm |
| Back Working Distance | 8.3mm |
| Back Focus Length | 9.39mm |
| Dimensions | 30mm / 33.43mm |
| Focus Type | Fixel Focal |
| Focus Range | 0.3m to infinity |
| Mount Type | M20x0.5-6g |
| Weight | 33g |
| Operating Temperature | -40℃ to +80℃ |
| Storage Temperature | -40℃ to +80℃ |
| External Coating | AR Coating Available |
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.
