Product Information
Product Information

PRISMVUE NF2

The PRISMVUE loupes are prismatic loupes incorporating PENTAX's unique deflection prisms and offer the surgeon with bright magnified view of the operation field while maintaining upright posture and facing forward.
It prevents the user from needing to hunching their neck and back forward.

Features of PRISMVUE NF2

Our Unique Optical Prism Design
Uniquely designed PENTAX deflection prisms*1 allows viewing below the level of direct site, enhances vision and makes it easier to identify small structures in best working posture.
Comfortable surgery is possible without blocking the light of the lighting lamp.
*1 High end deflection prisms [48 degrees]
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Bright and wide field of view
PENTAX's unique and sophisticated design provides a bright and wide field of view.
The upright posture facing forward during operation prevents the user's head from interfering with the surgical lights and ensures a bright field of view at all times.
Field width: The field of view is larger by 20 to 30% than
that obtained with conventional products.
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Reducing eye fatigue and cervical strain

The convergence (*Note) provided by the optical system allows stress-free parallel viewing at all times.
This reduces the eye fatigue and cervical strain.
*Note: Convergence is the eyes' turning inward towards the nose when we view objects with both eyes.

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Easy shifting between magnified and actual-size views

Our loupes allows the user to switch easily between magnified and actual size view by just moving the head and only from the movement of the eyes. This allows stabilization of the magnified viewing position.
*High-refractive-index aspherical lenses are incorporated in eyeglasses for Type L.

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Adjustments and Other Features
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Specifications

Type
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Type T (Without spectacle lenses)
  S series C series N-series
Magnification 2.0x 2.5x 3.0x 3.0x 3.5x 4.0x 5.0x
Lens Configuration
Objective:3
Ocular:3
total:6
Objective:3
Ocular:2
total:5
Working Distance (WD) Custom Made (35㎝ ~70 ㎝)
Exit Pupil Diameter 6.4mm 4.9mm 4.6mm 4.3mm 4.2mm
Weight* 95g 96g 105g 80g 82g 86g 105g
Loupes Position 52㎜ ~ 76㎜
Spectacle Lenses -
Frame Nylon
Frame (color) R;Red K:Black B:Blue S:Silver
*May vary with the strength of the lenses.(Strap weight not included.)
Type L (With spectacle lenses)
  S series C series N-series
Magnification 2.0x 2.5x 3.0x 3.0x 3.5x 4.0x 5.0x
Lens Configuration
Objective:3
Ocular:3
total:6
Objective:3
Ocular:2
total:5
Working Distance (WD) Custom Made (35㎝ ~70 ㎝)
Exit Pupil Diameter 6.4mm 4.9mm 4.6mm 4.3mm 4.2mm
Weight* 106g 107g 116g 92g 94g 98g 117g
Loupes Position 52㎜ ~ 76㎜
Spectacle Lenses High refractive index 1.67 (aspheric design)
Frame Nylon
Frame (color) R;Red K:Black B:Blue S:Silver
*May vary with the strength of the lenses.(Strap weight not included.)
Trade name:PENTAX PRISMVIEW NF2
Frame color
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References

  • Phyo Kim M.D.,Ph.D. , Masao Joujiki,B.S.,Masao Suzuki,B.S.,Keisuke Ueki,M.D.,Ph.D.,Yoshiaki Amano,M.S. , Newly Designed Ergonomic Surgical Binocular Telescope with Angulated Optic Axis . Operative Neurosurgery, Volume 63, Issue suppl_1, 1 July 2008, Pages ONS188–ONS191 Doi.org/10.1227/01.NEU.0000313110.41661.91

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