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NovaStar, QT136, Mask Field Tester, Radius 300-305mm, Left/Right Field of View <=120 Degrees (New)

NovaStar, QT136, Mask Field Tester, Radius 300-305mm, Left/Right Field of View <=120 Degrees

Description

  1. Scope Of Application
    1. For the visual field test of masks, masks, respirators, etc.
  2. Related Standards
    1. GB / T 32610-2016
    2. GB 2626-2006
  3. Technical Characteristics
    1. The overall equipment consists of a test spherical screen, a recording device, a stand, and a test head mold.
    2. Test spherical screen: the radius is 300 to 305 mm, and a scale line extends to 120 ° every 10 °. The test ball screen has relevant marking lines directly, without the need for customers to perform complicated and tedious scribing. The visual field test can be directly projected on the ball screen, which can directly see whether the field of vision is qualified.
    3. Recording device: the recording needle is linked with the visual target through components such as the axis wheel, and the azimuth and angle of the visual target are recorded on the visual field drawing correspondingly.
    4. Seat frame: used to support the semicircular arc bow and fixed recording device.
    5. Test head mold: a standard head mold, two small holes in the head mold are equipped with small bulbs, bulb position and head mold placement according to the requirements of standard GB 2890. The test head mold should be installed on the workbench in such a way that the left and right eyes can be respectively placed at the center of the test spherical screen and look directly at its "0" point.
  4. Technical Parameters
    1. Test spherical screen: radius 300 to 305 mm.
    2. Left and right field of view: ≤120 °.
    3. Bulb distance: the apex of the bulb is behind the midpoint of both eyes (7 ± 0.5).