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8 Specifications
8.3 Optical adapter specifications
For 4-mm type insertion tube
When the optical adapter is mounted on the insertion tube.
• *1 Indicates the range within which the image can be viewed clearly.
• *2 Can be inserted into a φ4.0 mm hole when mounted on the insertion tube.
• *3 Indicates the length of the rigid portion at the insertion tube
’s distal end when mounted.
For 6-mm type insertion tube
When the optical adapter is mounted on the insertion tube.
• *1 Indicates the range within which the image can be viewed clearly.
• *2 Can be inserted into a φ6.0 mm hole when mounted on the insertion tube.
• *3 Indicates the length of the rigid portion at the insertion tube
’s distal end when mounted.
AT120D/NF
-IV84
AT120D/FF
-IV84
AT120S/NF
-IV84
AT120S/FF
-IV84
Product abbreviation 120DN V84 120DF V84 120SN V84 120SF V84
Character color Red Green Red Green
Optical system Field of view
120° 120° 120° 120°
Direction of view Forward Forward Side Side
Depth of field
*1
4 to 190 mm 25 to ∞ mm 1 to 20 mm 6 to ∞ mm
Distal end
Outer diameter
*2
φ4.0 mm φ4.0 mm φ4.0 mm φ4.0 mm
Rigid distal end length
*3
19.7 mm 19.6 mm 22.2 mm 22.2 mm
AT40D
-IV86
AT80D/NF
-IV86
AT80D/FF
-IV86
AT120D/NF
-IV86
Product abbreviation 40D V86 80DN V86 80DF V86 120DN V86
Character color Black Red Green Red
Optical system Field of view
40° 80° 80° 120°
Direction of view Forward Forward Forward Forward
Depth of field
*1
200 to ∞ mm 8 to ∞ mm 35 to ∞ mm 4 to 190 mm
Distal end
Outer diameter
*2
φ6.0 mm φ6.0 mm φ6.0 mm φ6.0 mm
Rigid distal end length
*3
19.8 mm 19.8 mm 19.8 mm 19.8 mm
AT120D/FF
-IV86
AT80S
-IV86
AT120S/NF
-IV86
AT120S/FF
-IV86
Product abbreviation 120DF V86 80S V86 120SN V86 120SF V86
Character color Green Black Red Green
Optical system Field of view
120° 80° 120° 120°
Direction of view Forward Side Side Side
Depth of field
*1
25 to ∞ mm 18 to ∞ mm 1 to 25 mm 5 to ∞ mm
Distal end
Outer diameter
*2
φ6.0 mm φ6.0 mm φ6.0 mm φ6.0 mm
Rigid distal end length
*3
19.8 mm 25.2 mm 25.2 mm 25.2 mm
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