Small-size long working distance micro optical system suitable for space application

Abstract

The invention discloses a miniaturized long operating distance microscopic optical system suitable for space application, comprising a long operating distance achromatic microscopic objective and a refracting system, where the microscopic objective is composed of first positive lens, second positive lens, positive glued lens group and negative glued lens group from the object side to the image side, and the refracting system is composed of two reflecting prisms and optical glue. The advantages of the invention are that: it adopts reverse light path trace and adds the after operating distance; integrated with the other positive lens group and two single-plate positive lenses, it can reduce high aberration, realize flat image field so that they compose a long operating distance microscopic objective together; and it adopts an total reflecting refracting system to shorten axial distance so as to compose a miniaturized long operating distance microscopic optical system suitable for practical space application.

Description

Technical field [0001] The invention relates to optical elements and systems, in particular to a miniaturized long working distance microscopic optical system for observing spatially distributed cell targets. Background technique [0002] Space life science is a brand-new field that is actively researched by countries all over the world. Microscopic observation and research in space is of great significance to the development of space life science. The objective of spatial microscopic observation is the three-dimensional distribution of cells in a closed container, which is very different from the ground microscopic observation target installed on a slide. On the ground, due to the action of gravity, the target is flattened into a layer, which can be regarded as a plane; in space, gravity almost disappears, and the cells are suspended in the container, showing a three-dimensional distribution. To perform microscopic observations in space, a miniaturized long working distance micr...

AI Technical Summary

Problems solved by technology

For the microscopic observation of three-dimensionally distributed cell targets in space applications, the cells are suspended in the container, and the optical system is required to have a certain field of view. Since total reflection has a certain limit on the incident angle of light, it is difficult to fully reflect the light of different fields of view. Realize multiple total reflections; in addition, for achromatic objectives, the use of prisms to achieve short lens barrels will bring chromatic aberration to the microscopic system, which will affect the imaging quality

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