Some Instruments For Quality Assurance In Component Manufacture

B J Biddles

doi:10.1117/12.954680

16 March 1976 Some Instruments For Quality Assurance In Component Manufacture

B J Biddles

Proceedings Volume 0073, Quality Assurance in Optical and Electro-Optical Engineering; (1976) https://doi.org/10.1117/12.954680
Event: Quality Assurance in Optical and Electro-Optical Engineering, 1975, Delft, Netherlands

Abstract

Optics has traditionally been regarded as something of a 'black art', practised by highly skilled operators using appallingly primitive tools and their own subjective judgement. However, this is becoming a thing of the past; modern requirements of high production or extreme accuracy are not consistent with a little understood production line, requiring operators to be trained for 5-10 years: The modern approach is to regard an optical component as a piece of specified material which must be treated in a straight-forward engineering fashion to produce the object on the drawing within specified tolerances and costs. To that end, the production process has been studied in great detail, from material selection through forming to polishing. But there are still anachronisms, in areas such as testing, edging, and final inspection. The whole business of test plating, with its huge stocks of expensive plates, and its risk of damage to the product seems to cry out for a rethink. Requirements of modern lens designs have shown the old methods of centring to be inadequate. Large percentages of product are being reworked or scrapped for lack of objective standards at the inspection stage, and knowledge of what is important, and in what context.

Citation Download Citation

B J Biddles "Some Instruments For Quality Assurance In Component Manufacture", Proc. SPIE 0073, Quality Assurance in Optical and Electro-Optical Engineering, (16 March 1976); https://doi.org/10.1117/12.954680

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