GB/T 9247-2008Microscopes - Condensers (English PDF)

Foreword

This standard is the result on the basis of GB/T 9247-1996 "microscope condenser" on amending the Supplementary made.

This standard and GB/T 9247-1996 The main differences are as follows.

--- This release adds the numerical aperture of the condenser manufacturing variations of provisions and a corresponding increase in the numerical aperture of the condenser measurement procedures;

--- This version of the 1996 version of the test used "special microscope frame" are replaced by "and the subject of a microscope equipped with a condenser frame";

Condenser stress --- for a polarizing microscope examination instead stress tester checks;

--- Cleaning requirements on quality and appearance of the condenser optics are clearly specific quality requirements. Appendix A of this standard is an informative annex. The standard proposed by China Machinery Industry Federation.

1 Scope

This standard specifies the classification microscope condenser and the basic parameters, requirements, test methods and marking.

This standard applies to upright microscope condenser transmitted light observations.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 15464 instrumentation packaging technology

3 Classification and basic parameters

4 Requirements

When the swing frame front group before 4.1 times put into the condenser lens group, the lens axis of the front group in the focal plane of the condenser lens shift should not exceed 0.02mm.

4.2 condenser aperture stop should be the central axis substantially coincident.

4.3 Variable aperture stop should be basically round, adjusting lightweight and comfortable, the smallest diameter should be less than Ø2mm.

NA 4.4 condenser deviation shall be in accordance with Table 2.