PCHI series
Hole inspection lenses for 360° inside view in perfect focus
As of March 31, 2023, new models of pinhole lenses will be available: PCHI3M, PCHI3M-AF, and PCHI3M-MF for 1.1" sensors; PCHI012-AF and PCHI012-MF for 1/2" sensors with liquid lenses and manual focusing gear.
Overview
Models
Downloads
Related
Tech Info
Resources
New models
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 depth of field
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
PCHI optics have been developed by Opto Engineering® to easily inspect holes, cavities and containers. Unlike common optics or so called “pinhole lenses” which can only image flat fields of view, hole inspection optics are specifically designed to image both the bottom of a hole and its vertical walls.
Thanks to the large view angle (>82°) and innovative optical design, these lenses are compatible with a wide range of object diameters and thicknesses. Hole inspection optics are the perfect solution to inspect a variety of different object shapes such as cylinders, cones, holes, bottles or threaded objects.
New and improved models are now available, providing the ease-of-use of an upgraded focusing mechanism (PCHI MF) and the flexibility of an immediate focusing thanks to the integration of liquid lens technology into the lens’ optical design (PCHI AF).
Discover more
We offer imaging solutions for every business
Please wait
Unable to process your request
Back to models
| 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 | |||||||||
|
Select 2 or more models to compare specs
Start comparing
Clear selection
|
||||||||||||
| 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
|
| PCHI012-MF | 4.8 | 1/2″ | 10.0 x 6.0 | 120.0 x 190.0 | 5.0 | 62.0 | 6 | Manual (gear) | C | 102.9 | 37.7 |
Quote
|
| PCHI012-AF | 4.8 | 1/2″ | 10.0 x 6.0 | 120.0 x 190.0 | 5.0 | 62.0 | 6 | Liquid lens | C | 108.5 | 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
|
| PCHI3M | 10.0 | 1.1″ | 10.0 x 6.0 | 120.0 x 190.0 | 5.0 | 62.0 | 13 | Manual (lockring) | C | 120.6 | 40.0 |
Quote
|
| PCHI3M-MF | 10.0 | 1.1″ | 10.0 x 6.0 | 120.0 x 190.0 | 5.0 | 62.0 | 13 | Manual (gear) | C | 118.5 | 37.7 |
Quote
|
| PCHI3M-AF | 10.0 | 1.1″ | 10.0 x 6.0 | 120.0 x 190.0 | 5.0 | 62.0 | 13 | Liquid lens | C | 122.4 | 40.0 |
Quote
|
Last update 02 Mar 2023
Notes
- Working distance: distance between the front end of the mechanics and the object.
- Working f-number (wf/N): the real f-number of a lens in operating conditions.
- Measured from the front end of the mechanics to the camera flange.
Back to models
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.
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.
Examples of images taken with PCHI
Nut
Sprocket
Heatsink
Large-sized preform
Small preform
Bottle cap
