除了mk41和mk43是广角镜之外，mk45也是广角的？

a10a10a10

有哪位前辈能介绍一下，除了mk41和mk43是广角镜之外，mk45是不是也是广角的？和41、43相比有什么区别？

hxb999

MK91,还有没见过实物的MK42

JSOC

hxb999 发表于 2015-7-17 23:05
MK91,还有没见过实物的MK42

42估计就停留在图纸或者几台实验品 样品了，应该没正式投产 装备过

幽灵战士

7×50规格按过去65度的广角标准，千米视场至少要达到162m，现在60度的标准也要达到150m，这种规格的望远镜我见过视场最大的千米视场才一百三十多米，才五十多度，属于标准视场。我看过MK45的图片镜身上没有任何视场的标注，

幽灵战士

昨天晚上在百度上也有人问MK45是不是广角，关键镜身上没有提供任何关于视场的信息，所以很难判断是不是广角镜

a10a10a10

Another binocular made to the same US NAVY design as the B&L & REL is the Hayward Mk.45 7x50. The USN Mk.45 Mod 0 binocular was introduced during WWII, a 7x50 with a very slightly wider field and a more waterproof housing, extruded aluminium alloy & water-resistant air-tight gaskets. 'Opticalman 3 & 2', 1966, reprinted by Dover as 'Basic Optics and Optical Instruments', notes on p449 that the hinge joint is different, with a straight tube - not tapered - and an expanding bearing that tightens against the hinge lugs, with hinge locks to secure the bearing. A Zerk grease fitting permits lubrication without disassembly. On p462 is noted that weak or faulty hinge tension is corrected with oversize bearings. Some surviving Mk 45s do indeed have a floppy hinge that will not hold IPD.

hxb999

MK45才7.1度的视场，除了棱镜的安装方式和其它美军MK镜子有区别外，没什么特别的