Import 25mm F0.95 1/3" Auto Iris Ir Day/Night Lens — Buy in wholesale FOB from Supplier in China

The 25mm f0.95 1/3" auto iris IR day/night lens from Fujian Institute Of Optical Technology is a fixed focal length C-mount lens built for low-light surveillance applications. Its standout feature is the F0.95 maximum aperture, an exceptionally fast rating that allows substantially more light capture than standard F1.4 or F1.6 lenses in the same focal range. The lens covers a 1/3-inch image sensor format and uses a CS mount with a minimum object distance of 0.4 metres. Physical dimensions measure 52 by 63 by 54 millimetres, with a net weight of 176.5 grams. The auto iris mechanism automatically adjusts the aperture opening in response to changing light conditions, maintaining optimal exposure across day and night cycles without manual intervention.

The optical construction employs infrared-corrected elements to maintain focus across visible and near-infrared wavelengths, a critical feature for day/night cameras that switch to IR illumination after dark. The F0.95 aperture rating is non-standard in the CCTV lens market, where F1.0 and F1.2 are more commonly found for traffic surveillance applications. This aperture speed demands precision-ground aspherical elements and tight tolerance assembly to control spherical aberration and coma at wide open settings. The CS mount is shorter than the older C mount standard, requiring either a CS-mount camera or an adapter ring; buyers should verify their camera's back focal distance compatibility. The 25mm focal length on a 1/3-inch sensor delivers a horizontal field of view of approximately 14 degrees, suitable for medium-range observation of vehicles, licence plates, or perimeter boundaries.

Target buyers include system integrators deploying traffic surveillance networks, security contractors specifying low-light capable installations, and OEMs building camera modules for harsh lighting environments. The supplier notes capability to develop customised lenses for traffic surveillance applications, suggesting an in-house optical design and manufacturing operation. The 0.4 metre close focus distance permits installation in constrained spaces where longer working distances are impractical. For import buyers, confirming the auto iris drive type (DC or video drive) is essential, as incompatible drive signals will prevent iris function. The lens ships from Fuzhou, Fujian Province, a region with established optical component manufacturing infrastructure.

Fujian Institute Of Optical Technology operates from No.18 Chayuan Road, Fuzhou 350013, in Fujian Province, China, a location within one of the country's established optical manufacturing corridors. The supplier holds an imported tier classification with a harbor trust tier, indicating external sourcing of some components or finished goods rather than fully verticalised domestic production. The response rate stands at 0.00 percent with zero average response hours recorded, which suggests either a new listing, a dormant account, or data capture limitations rather than active engagement metrics. Buyers should initiate direct contact to assess current operational status and responsiveness before relying on this channel for time-sensitive procurement.

The listing emphasises custom development capability for traffic surveillance lenses, including reference to a similar 15-45mm auto iris F1.0 product in their portfolio. This indicates some level of optical design competence beyond pure trading. However, the profile does not disclose ISO certification status, factory audit results, annual output figures, workforce size, or specific clientele. The supplier's stated willingness to develop bespoke optical solutions for special applications represents a potential value add for buyers with non-standard requirements, though such development engagements require direct technical dialogue to establish design capability, prototype lead times, and intellectual property handling protocols.