| 摘要 |
An ancillary optical system 10 for imaging optics (46) for the infrared spectral region, comprises a lens system. In the direction from an object side to an image side, this comprises two groups of lenses 12, 14. The group of lenses 12 on the object side has a negative effect and the group of lenses 14 on the image side has a positive effect on an incident beam path. In addition, the group of lenses 14 on the image side has a lower refractive power than the group of lenses 12 on the object side. The focal point on the image side of the group of lenses 12 on the object side coincides with the focal point on the object side of the group of lenses 14 on the image side. Moreover, the design of the lens system is such that its exit pupil 42 is located on the image side of the group of lenses 14 on the image side. Folding elements, such as a Bauernfeind prism (50), may be disposed between the two groups. Furthermore, the invention relates to imaging modules (44) with imaging optics (46) for the infrared spectral region and with the above-described ancillary optical system (48). |
