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PCHI series
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Inner inspection

Key advantages

  • Perfect focusing of holed objects
    Both the walls and the bottom of a cavity are imaged in high resolution
  • Cavity inspection from the outside
    No need to put an optical probe into the hole
  • Very high field depth
    Objects featuring different shapes and dimensions can be imaged by the same lens
  • Wide viewing angle
    Sample surfaces are acquired by the lens under a convenient perspective to clearly display their features
  • New focusing ring version available
    Manually adjusting the focus is never been easier!
  • New integration with liquid lens technology
    PCHI AF allows for an extremely fast and repeatable change in focus
Discover more

Extendend range

PCHI012-MF and PCHI012-AF now available on request.

Working principle

PCHI023-AF with integrated liquid lens allows to quickly and remotely change the focus.
PCHI023-AF with integrated liquid lens allows to quickly and remotely change the focus.
Main optical specifications Field of view (diameter x height) Advanced optical specifications Mechanical specifications
Part
number
Image
circle
diameter
Max
sensor
size
Minimum Maximum Working
distance
with
minimum
object
Working
distance
with
maximum
object
Working
ƒ/N
Focusing Mount Length Outer
diameter
(mm) (mm × mm) (mm × mm) (mm) (mm) (mm) (mm)
1 1 2 3
PCHI013 3.6 1/3″ 10.0 x 6.0 120.0 x 190.0 5.0 62.0 5 Manual (lockring) C 101.9 40.0
Quote
PCHI012 4.8 1/2″ 10.0 x 6.0 120.0 x 190.0 5.0 62.0 6 Manual (lockring) C 103.8 40.0
Quote
PCHI023 6.6 2/3″ 10.0 x 6.0 120.0 x 190.0 5.0 62.0 8 Manual (lockring) C 108.5 40.0
Quote
PCHI023-MF 6.6 2/3″ 10.0 x 6.0 120.0 x 190.0 5.0 62.0 8 Manual (gear) C 113.7 37.7
Quote
PCHI023-AF 6.6 2/3″ 10.0 x 6.0 120.0 x 190.0 5.0 62.0 8 Liquid lens C 115.2 40.0
Quote

Last update 28 Sep 2022

Expand table

Notes

  1. Working distance: distance between the front end of the mechanics and the object.
  2. Working f-number (wf/N): the real f-number of a lens in operating conditions.
  3. Measured from the front end of the mechanics to the camera flange.

Technical documents

Product user guide
Back focal adjustment
PCHI023-AF Manual

Working principle

Field of view selection chart

Working principle

PCHI optics can image cavities whose diameters and thicknesses span over a wide range of values.

For a given hole diameter, the table below lists the maximum cavity height allowed for both high-resolution imaging (small pixel sizes) and normal resolution imaging (> 5 micron pixels) applications; the "r" ratio indicates how much of the detector area gets covered by the image of the hole inner walls.

The listed working distance values ensure that the object image is exactly inscribed into the short side of the detector, thus maximizing "r" ratio and image resolution.

`r(%) = frac("Side view height (px)")("Detector short side (px)") * 100`
Unwrapped image. 360LIB-01 dedicated software library is available to easily and accurately unwrap the images.
Unwrapped image. 360LIB-01 dedicated software library is available to easily and accurately unwrap the images.

Field of view selection chart

Hole diameter (mm) Cavity height (mm) r (%) Cavity height (mm) r (%) Working distance (mm)
10 6 23.5 10 28 5
15 8.5 22.5 14.5 29 6.5
20 13 26.5 22 32.5 9
25 18 26 31 33 11
30 22 26 37 32 14
40 31 26.5 53 32 18
50 40 27 68 32 23
60 50 28.5 85 32.5 29
70 60 28 102 33 35
80 75 29.5 120 34 41
100 97 30 155 34.5 52
120 120 31 190 35 62

Fixed focal length lenses vs PCHI Series

The inner walls of cavities are in perfect focus thanks to PCHI unique optical design.
The inner walls of cavities are in perfect focus thanks to PCHI unique optical design.

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Tools & Resources

360° optics tutorial
Image gallery
Video gallery
Frequently asked questions
Glossary