CORRECT FVL-2X-65D-CA-LED

Technical Specifications: Magnification 2X; working distance 65 mm; distortion less than 0.1 percent; central resolution 178 line pairs per mm; resolved pixel size approximately 5.6 µm; effective F-number 16.3; C-mount camera interface; compatible sensor size up to 2/3 inch; coaxial D model mass approximately 82 g; straight non-illuminated equivalent approximately 42 g; illumination uniformity governed by the integrated coaxial tube and LED source controller.

Functional Features: Telecentric imaging maintains constant magnification across depth variation, reducing perspective error in dimensional measurement; coaxial illumination provides on-axis lighting for reflective surfaces, etched marks, substrates and precision parts; C-mount compatibility supports standard industrial cameras; theta adjustment facilitates camera alignment.

Application Scenarios: Dimensional gauging, optical metrology, bearing and machined-part inspection, electronic component measurement, semiconductor substrate alignment, medical device inspection, and high-magnification machine-vision stations requiring low distortion.

Performance Parameters: 2X magnification with 65 mm object distance delivers small field coverage suitable for fine features; 178 lp/mm central resolution supports high-pixel cameras up to the 2/3 inch limit; 5.6 µm resolved detail defines practical measurement repeatability together with camera pixel size and lighting; shallow depth of field requires precise working-distance setup.

Material Composition: Precision optical glass elements, black-anodized aluminum or alloy barrel, coaxial beam-splitter housing, C-mount ring, and LED module with regulated driver where the LED option is supplied.

Structural Characteristics: Telecentric front optics, aperture stop at internal focal plane, relay optical group, coaxial illumination tube with beam splitter, and rear C-mount. The D suffix indicates coaxial illumination path; LED versions add a mounted illumination ring or fiber/LED source coupled to the coaxial port.

Working Principle: Object-space telecentric design places the aperture stop at the front objective focal plane so chief rays remain parallel to the optical axis at the object side. This produces magnification independent of object distance within the defined depth range. Coaxial LED light passes through the beam splitter to illuminate the target on-axis, and reflected light returns through the lens to the camera sensor.

Installation Requirements: Mount the lens to a C-mount camera with proper flange distance; fix the lens and camera assembly at 65 mm working distance from the measured surface; align the optical axis perpendicular to the target; connect the LED controller to the rated voltage and current; use the theta adjustment to square the sensor; select a camera sensor no larger than 2/3 inch for the specified image circle.

Usage Precautions: Do not exceed the 2/3 inch sensor format because vignetting and resolution loss will occur; keep the front optical surface clean and free from abrasive contact; avoid overdriving the LED module outside its rated current; maintain the 65 mm working distance because telecentric accuracy depends on fixed geometry; prevent coolant, oil or dust ingress on coaxial illumination optics; store in a dry, dust-controlled environment.