IS 988 : 1959 General requirements for optical components

1 Scope

1.1 This standard prescribes the general technical requirementsand the methods of test for This types of finished basic opticalcomponents used in optical instruments or optical systems:

a) Lenses

b) Prisms

c) Mirrors

d) Graticules or diaphragms

e) Plates, parallel and prismatic

f) Optical filters

1.1.1 For the special requirements governed by the individualassembly, location or function of the component in a particularsystem or instrument, reference should be made to the relevantspecification for the instrument or system, as the case may be.

2 References

IS 170 : 1950Specification for acetone

IS 321 : 1952Specification for ethyl alcohol (absolute alcohol)

IS 1286 : 1958 Pictorial markings for handlinginstructions fornon-dangerous goods

IS 1399 : 1959Glossary of terms used in optical technology

IS 1400 : 1960Specification for optical glass