Abstract： ASME Y14.18M:1986 pdf download.OPTICAL PARTS. 2.4 Cemented Elements 2.4.1 Vlws. Two or more elements cemented together shall be shown as a detailed assembly. A sample drawing is shown in Fig. 3. 2.4.2 Dimension.. Sufficient dimensions and a...

ASME Y14.18M:1986 pdf download.OPTICAL PARTS.

2.4 Cemented Elements

2.4.1 Vlws. Two or more elements cemented together shall be shown as a detailed assembly. A sample drawing is

shown in Fig. 3.

2.4.2 Dimension.. Sufficient dimensions and associated tolerances, as required to control the finished assembly,

shall be used. Unless otherwise specif.cd. the assembled elements shall meet their individual element tolerances.

2.5 PIano-Piano Elements

2.5.1 General. This type of element, a special case of pars. 2.2, may be a window, filter, reticle, or other

element depending upon Its specification.

2.5.2 Wedges. The wedge shall be drawn with its maximum thickness given, and the optical deviation of the wedge

given and toleranced at a specified wavc length of light. The mechanical angle of the wedge may be given

alternatively, but the drawing should clearly differentiate between the two. A sample wedge drawing ii shown in

Fig. 4.

2.6.3 Retlcias. Reticle markings shalt be shown in the drawing and shall be fully portrayed and dimensioned. It is usually necessary to specify certain processes such as etching for manufacturing control of the item. A sample

reticle drawing is shown in Fig. 5.

2.5.4 Window, and Fters, These items are drawn similarly to para. 2.2 and differ primarily In the types of

coatings used as noted In para. 6.5. A sample filter drawing Is shown In Fig. 6.

2.5.5 Flat Mkrors. These items are drawn similarly to para. 2.2 and differ from the above primarily in the

materials and coatings used.

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