Tsubosaka Electric Co., Ltd. Official site

Focus tester FD for measuring and displaying the focal position shift from the reference lens.

Instantly measure the deviation of the focus position and contrast relative to the reference lens! Measurement of focal length.

It can instantly and quantitatively measure the amount of focus shift due to aperture, not only for fixed lenses and zoom lenses. It can measure the focal length error. By projecting a chart onto the lens and scanning a mirror placed on the image plane up and down, it precisely counts the focus position. With 16 levels of sensitivity adjustment, it has a wide measurement range and supports various types of lenses. It is capable of RS232C communication, making data control via PC easy. Because it provides precise measurement results in a short time, it is extremely valuable not only for development but also for inspection processes on manufacturing lines.

https://www.tsubosaka.co.jp/english/archives/product/focus-tester-fd-30n

basic information

Specifications Measurement Items: 1. Focal position of the lens ±Δf relative to the reference focal position (0 reference) 2. Contrast Amount of contrast relative to the reference lens Collimator Lens: f=300mm D=50mm Test Lens: f=10–75mm Sensitivity Switching: 16 levels in total Measurement Accuracy: 1/100 mm Display Resolution: 1/1,000, rounding 5/10,000 External Communication: RS-232C Power Supply: AC100V, 50/60Hz Power Consumption: Approximately 150VA Dimensions: [Main Unit] 920(W)×340(H)×340(D)mm [Display Unit] 156(W)×66(H)×100(D)mm Weight: 40.0Kg

Price range

P5

Delivery Time

OTHER

The delivery date may vary depending on the situation, so please feel free to contact us.

Model number/Brand name

FD-300N

Applications/Examples of results

Each lens manufacturer primarily uses our products in the inspection and adjustment processes centered around the development and manufacturing lines of various camera lenses. We customize specifications according to the usage needs of each company, allowing for a wide range of measurement methods and objects.

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