25mm DG Series Fixed Focal Length Lens

Product Details Up to 4/3″, C-Mount Lens Up to 9 MegaPixels, 2.8µm Pixel Size Sensors Double Gauss (DG) Lens with low distortion and high performance 18mm to 75mm Focal Length TECHSPEC DG Series Fixed Focal Length Lenses utilize a Double Gauss design to provide high-performance, low distortion, compact size, and exceptional value, while exceeding the performance of typically available fixed focal length lenses. These lenses feature a mechanical design that allows the focusing movement to be motorized by the user, yields image resolution greater than 100 lp/mm, and have a standard C-Mount. For most applications, the camera-lens combination can be attached to workstations using the ¼-20 mount provided on the camera. TECHSPEC DG Series Fixed Focal Length Lenses include focus ring, manual iris, and set screws to facilitate a low profile integration in machine vision applications. Typical applications for the DG Series lenses include machine vision, assembly-line integration, and measurement and image analysis. Note: Industrial Boom Stands are recommended for building vibration-free workstations. Specifications General Product Family: DG Series Type: Fixed Focal Length Lens Imaging Lens Type: Traditional Double-Gauss Style Lens Physical & Mechanical Properties Iris Option: Variable Length (mm): 116.20 Maximum Diameter (mm): 54 Outer Diameter (mm): 54 Weight (g): 85 Maximum Rear Protrusion (mm): 3.5 Optical Properties Horizontal Field of View @ Max Sensor Format: 142.9mm – 31.6° Field of View at Max Sensor Format: Horizontal: 141.7mm – 31.4° Vertical: 106.1mm – 23.8° Diagonal: 177.5mm – 38.7° Horizontal Field of View, 1.1″ Sensor: 142.9mm – 31.6° Horizontal Field of View, 1″ Sensor: 128.8mm – 28.7° Horizontal Field of View, 2/3″ Sensor: 88.4mm – 19.9° Horizontal Field of View, 1/1.8″ Sensor: 72.3mm – 16.4° Horizontal Field of View, 1/2″ Sensor: 64.2mm – 14.6° Horizontal Field of View, 1/2.5″ Sensor: 58.2mm – 13.2° Horizontal Field of View, 1/3″ Sensor: 48.2mm – 10.9° Horizontal Field of View, 1/4″ Sensor: 36.1mm – 8.2° Maximum Image Circle (mm): 17.60 Numerical Aperture NA, Object Side: 0.0114 Number of Elements (Groups): 7 (5) Focal Length FL (mm): 25.00 Working Distance (mm): 240 – ∞ Aperture (f/#): f/4 – Closed Coating: λ/4 MgF 2 Coating Specification: λ/4 MgF 2 Entrance Pupil Position (mm): Measured from the first lens surface on the object side. Positive values indicate direction toward the image side; negative values indicate direction toward the object side. 10.22 Object Space Principal Plane (mm): Measured from the first lens surface on the object side. Positive values indicate direction toward the image side; negative values indicate direction toward the object side. 11.79 Image Space Principal Plane (mm): Measured from the last lens surface on the image side. Positive values indicate direction toward the image side; negative values indicate direction toward the object side. -11.43 Maximum Distortion (%): 0.03 Exit Pupil Position (mm): Measured from the last lens surface on the image side. Positive values indicate direction toward the image side; negative values indicate direction toward the object side. -13.11 Lens Wavelength Range: VIS Sensor Maximum Sensor Format: 1.1″ Pixel Size (μm): 2.74 Threading & Mounting Filter Thread: M30.5 x 0.50 (Female) Mount: C-Mount Environmental & Durability Factors Storage Temperature (°C): -20 to +60 Regulatory Compliance RoHS 2015: Exempt × REACH 201: Compliant × Certificate of Conformance: View ×