Optical Parts

Optical Parts

Unlike other physical objects, optical parts have typically been a part of some other assembly or product, i.e., a microscope, a telescope, a camera, a measuring device, etc. Thus, the drawing practices for such optical parts have been considered to be “product peculiar;” unlike the universe of other products usually identified within the engineering and manufacturing fields. However, highly specialized optical parts are appearing in increasing numbers within many other products used in industry. Some examples are alignment measuring instruments, leveling devices, optical tools, industrial photographic products, projection devices (comparators), and document reproduction machines.

The manufacturer of optical parts applies considerable judgement and expertise above and beyond the stated requirements of the related drawing or specification in producing the part. Unless such parts are described precisely as intended, it may not be possible to produce the optical parts as accurately as required. The purpose of this section, therefore, is to provide guidance and general practices for the design definition of the required optics and related documentation. The manufacturing complexities of optics in general place severe limitations on the kind and amount of design information that can be provided without placing undue constraints on the optics manufacturer. In recognition of this fact, the guidelines in this section should enable an OEM (original equipment manufacturer), which includes optics in its designs, to acquire the necessary optical parts with confidence.

Reference Documents

    American National Standards Institute (ANSI) Standard Optical Parts Y14.18-1986
    American National Standards Institute (ANSI) Standard Dimensioning & Tolerancing, 1994
    MIL-STD-34 General Requirements for Optical Elements and Optical Systems