Darkfield illumination system

a technology of illumination system and concave mirror, which is applied in the field of darkfield illumination system, can solve the problems that the construction of concave mirror as a segmented mirror is difficult to achieve with the required accuracy, and achieve the effect of high uniformity

Inactive Publication Date: 2007-02-22
CARL ZEISS JENA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a reflector that uses multiple planar mirror segments arranged together to create a spherical surface for distributing reflected lights evenly across the entire area where it's used. This results in improved accuracy and consistency in brightness levels.

Problems solved by technology

The technical problem addressed in this patent is how to improve the uniformity of bright field illuminations in optical microscopy without compromising on image resolution or requiring extra components like lenses.

Method used

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Embodiment Construction

[0028]FIG. 1 shows a three-dimensional view of a darkfield illumination system according to the invention. The meridional rays 2 coming from the light source 1, shown schematically, are reflected at the segment mirror 3 outwardly on the aspherical mirror 4. The latter focuses the rays on a point between the mirror and the object. The light rays are subsequently scattered again uniformly over the entire object field 5.

[0029] A uniform illumination is likewise achieved with the sagittal rays shown in FIG. 2 (identical reference numbers are used for identical elements). The known solution shown in FIG. 3 for a 2.5× objective 6 has a darkfield illumination channel with three reflections at truncated-cone mirrors 7, 8 and 9. The light reflected by the mirror 9 illuminates the object field 10, wherein only small working distances can be achieved based on the principle.

[0030]FIG. 4 shows the realization of the invention in a novel 2.5× objective 11. The darkfield illumination channel has a

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Abstract

The invention is directed to a darkfield illumination system and is applicable in transmitted light microscopy and in incident light microscopy. A combination with a first, segmented mirror and a second, aspherical mirror is proposed for the purpose of uniform illumination of the large object fields occurring at low magnifications.

Description

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Claims

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Application Information

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Owner CARL ZEISS JENA GMBH
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