| 摘要 |
<p>A method resulting from proper use of a press-type mechanism by means of which reflective, mirror-forming layers in the form of coatings or conventional mirrors are transferred in pairs from right-angle master surfaces on prism-like blocks to right-angle mirror blocks, and the latter with the mirror-forming layers thereon are then delivered to the optical system of the shell of a binocular or like viewing instrument where they automatically become cemented porro relationship. The existence of the cementitious material which is used for the cementing operation compensates for discrepancies in manufacturing tolerances of either the mirror blanks or the binocular shell.</p> |
