Results Page

Based on your input, the wizard first looks at a product "family" to match your field of view and working distance requirements. If it can't match them exactly, it presents options as close to your requirements as possible and will show the trade-offs against the original requirements. The reported operating characteristics will vary with the type of lens system.

The results list may include the following:
  • Working Distance -- the mechanical spacing between the end of the lens and the object.
  • Working NA -- the numerical aperture of the system at the operating position.
  • Working Camera Resolve Limit -- the size of the smallest detail which will be imaged at sufficient magnification to cover two pixels on the sensor.
  • Working Lens Resolve Limit -- the smallest detail capable of being collected by the lens system. This detail will be expanded by a factor of 2, due to optical effects, when presented to the system. Any detail smaller then this resolve limit will be expanded to the same above value. This value, times the system magnification, must cover 2 pixels on the sensor to be "seen".
  • Working System Magnification -- the wizard makes a "best fit" of the object to the sensor so as to guarantee complete viewing and this becomes the "required magnification". The "working magnification", with a zoom system, usually matches the magnification somewhere between the zoom range. In the case of a "fixed system", the wizard attempts to match this magnification, however, if the working magnification is greater than the required, then part of the object will not be visible.
  • Available System Magnification -- when using a zoom system, it relates to the extremes of useable magnification at the maximum excursion of the zoom optics.
  • Maximum NA, Camera Resolve, and Lens Resolve -- when using a zoom system, these are the values at the upper zoom position. Frequently, the target is located at the working position and then it is necessary to zoom up to "see" the fine detail.
  • Depth of Field (DOF) -- the amount of variation in the height of the object which will still be in focus without physically re-focusing the lens.

Zoom 6000- Standard
Help understanding these results?
  Solution 1 Solution 2
Equipment No Attachment
2X Adapter
No Attachment
1.33X Mini Adapter
Working Distance 92 92
Working Field Coverage 4 4
Available Field Coverage 4.71 - 0.73 7.1 - 1.1
Working Depth of Field 0.686 0.3536
Minimum Depth of Field 0.0992 0.0992
Working System Magnification 1.65 1.65
Available System Magnification 1.4 - 9 0.93 - 6
Working Camera Resolve Limit 0.0121 0.0121
Working Lens Resolve Limit 0.0062 0.0044
Working NA 0.027 0.0376
Available NA 0.023 - 0.071 0.023 - 0.071
Maximum Camera Resolve Limit 0.0022 0.0033
Maximum Lens Resolve Limit 0.0023 0.0023
Approximate Price * $977.00 $1,192.00

Referring to the above results:
The equipment is a Zoom 6000, with 2 sets of accessories. The first is a 2X Adapter and no Lens Attachment, the second is a 1.33X adapter and no Lens Attachment.

The required mag is 1.65X and both systems are working at 1.65X.

Requested field coverage was 4 and the working field coverage is 4.

The working NA's, when the field coverage is 4 , are 0.027 and 0.0376.

This results in a 0.686mm, and 0.3536mm working depth of field.

The smallest detail the camera can "see" is 0.0121 (12 microns), in each case. This comes from (mag x detail = 2 pixels). The requested dimension was 0.05 (50 microns) so the camera resolution is adequate, at the working position.

At the working position, the lens itself can pick up a 0.0062, and 0.0044 detail. This gets optically blurred to 0.0124 and 0.0088 respectively. The camera will "see" the 0.0124 as it covers two pixels, but the 0.0088 will not cover two pixels and, in this case we call the system "camera limited", because if the pixels were smaller, it might see the finer detail.

Because this is a zoom system, the first can operate between 1.4X and 9X magnification, and the second between 0.93X and 6X. Going down in mag increases the field of view, while going up increases the resolution of the fine detail (NA of the zoom system increases, and the magnification spreads the detail at the sensor).

The approximate price is for a generic zoom system, without consideration of illumination, special drive arrangements, or added features.