|
| Medical |
Optical Assembly > Applications |
| |
| |
We manufacture precision optical components, opto-mechanical
and opto-electronic systems for many applications, including
the medical industry. Typical projects include ophthalmic
medical inspection systems, dental inspection system, x-ray
imaging system and endoscopes.
Products may be supplied as simple components or assembled
and tested as fully functional systems and sub-systems. |
| |
 |
|
| |
| |
| Medical Projects |
| Photo optics/Digital Imaging Article NO.1130011 |
 Camera
Lens 17.4mm F/1.6
This lens is a compact camera lens, combined with high optical performance
and fine mechanics, used for projecting plane objects at limited
conjugate to CCD chip, especially to convert X ray image to a light
image in the field of X ray applications for diagnostics. Due to
the high performance required, design of this kind of lenses with
high MTF (or resolution) from center to the edge of the image and
large relative aperture, is quite sophisticated. Tolerances of the
lens are so tight that are hardly achieved by ordinary technology
in manufacturing. An adjustable iris is provided between lenses
for adjusting the light transmitted to the CCD when different
image intensifier is used, which can be driven manually or by
a motor operated by signals from the light sensor.
Also an optional ND filter is available.
|
| Technical Data |
| Focal length |
17.4mm |
Adjustable iris: |
Linearly variable from F/1.7 to F/11 |
| Relative aperture: |
F/1.6 |
Overall length: |
52.4mm |
| Magnification: |
Dia. 25.8mm, flat |
Max.diameter: |
66mm |
| Object distance: |
33mm |
Adapter: |
Customization |
| Image size: |
Dia. 7.4mm, flat |
Adapter |
Customization |
| MTF: |
Center 0.65, edge 0.35 at 68 lp/mm, F/1.7 |
Compatible image intensifier: |
Dia.25 and 25.8, like Philips 23cm HRC and 31cm GG or Toshiba
E 5830SD-P10A |
| Distortion: |
-0.2% |
Compatible CCD: |
Mega pixel CCD, like KODAK KAI-1020M(monochrome). |
| Vignetting: |
0.12 at the edge |
|
|
|
| |
Modulation transfer function
|
Relative Illumination
|
Field curvature/Distortion
|
|
|
|
