Bull. Natl. Mus. Nat. Sci., Ser. E, 32, pp. 35 40, December 22, 2009 NOTE 169 0073 3 23 1 Binoculars Documents of Wakai Optical Industry Keiichi Saijo, Toshihiro Horaguchi and Takashi Nakajima Department of Science and Engineering, National Museum of Nature and Science 3 23 1 Hyakunin-cho, Shinjuku, Tokyo 169 0073, Japan Abstract Documents of Wakai Optical Industry including many design drawings of binoculars are newly donated to National Museum of Nature and Science. Wakai Optical Industry was a small maker of binoculars founded in 1948 and continued to 1951. We report characteristics of these documents and show the list of them Key words: binoculars, optical design 1. 2008 8 2. 23 26 Hercules OEM 66 24 mm 6 24 mm 8 30 mm 6 30 mm 7 50 mm 6 30 mm 1964 1) 25
36 西 城 惠 一 洞 口 俊 博 中 島 図 1. 隆 S 型双眼鏡 6400 組立図の一部 青図を反転表示したもの
37 1 A. Y.K.R (G) (mm) ( ) (mm) 1 G1 5170 5 17 9 3.4 24 8 2 G2 B20 (G23 63083) 6 30 8.3 5 24 8 3 G3 6150 6 15 7.5 2.5 24 8 4 G4 61875 6 18 7.5 3 24 9 5 G5 10500 10 50 6.5 5 24 9 6 G6 12500 12 50 5 4.2 24 9 7 G7 8300 8 30 8, 7.5 3.7 24 9 8 G8 8400 8 40 7.5 5 24 9 9 G9 7500 7 50 7.1 7.1 24 10 10 G10 S8400 8 40 7.5 5 24 10 11 G11 6250 6 25 8 4.1 24 10 12 G12 61883 6 18 8.3 3 25 1 13 G13 8180 8 18 6.2 2.25 25 1 14 G14 10300 10 30 6.5 3 25 1 15 G15 10400 10 40 6.5 4 25 1 16 G16 S1040 10 40 6.5 4 25 1 17 G17 4100 4 10 10 2.5 25 7 18 G18 16500 16 50 3.75 3.1 25 7 19 G19 4300 4 30 5 7.5 25 7 20 G20 8350 8 35 8 4.4 25 7 21 G21 10408 10 40 8 4 25 7 22 G22 Y.K.R 4 20 6 5 26 2 100 3 1.67 12 23 G23 63083 8.3 5 24 8 G2 B20 B. 1 24 5 2 4 30 mm (5 ) 6150 (7.5 ) 24 6 25 1 8 40 mm (7.5 ), 10 40 mm, 7 40 mm (7 ) f 1000 mm, f 915 mm, f 750 mm 3 63075;63083;83000 24 6 10 3 30 mm (10 ) 4 5170 (9 ), 6 18 mm (8.3 ), 8 18 mm (6 ) 24 8 12 5 6250 (8 ), 10050 (5 ), 12500, 20 50 mm (3 ), 16500 (3.75 ) 24 9 12 Zeiss Dekaris 10 50 mm (7 ) 6 8350 (8 ) 10 30 mm (6.5 ) 25 4 12 6 15 mm f 320 mm 2 16 mm & 8 16 mm (5 ) 25 7 8 2 20 mm (5 ) 7 4100 (10 ), 4 12 mm (11 ) 25 7 8 25 11 9 (Night-Glass) 4 (7.5, 10 ), 3 (10 ) 25 12 26 1 10 26 1 11 6 40 mm (7.5 ), 8 40 mm (7.5 ), 9 40 mm (6.7 ), 10 40 mm (6 ) 26 1 12 Mycro Camera 24 3 26 5 13 23 12 26 5
38 1 C. Y.K.R 1 S6400 23 12 2 6 24 1 3 6CF 24 3 4 24 4 5 5 17 mm, 6 18 mm 24 8 6 6383 24 9 7 6180 24 9 10 8 1050 24 10 9 1050 24 10 10 6150 24 10 12 6180 24 11 13 12500 24 12 14 S10400 24 12 15 6150 24 12 16 61575 25 1 17 6250 25 1 18 83080 25 1 19 S83508CF 25 1 20 83508 25 2 21 7500 25 3 9 22 6250 II 25 4 23 1650 25 4 24 615 25 6 25 61575CF 25 6 26 61875 25 7 27 61575 25 7 28 4 10 mm (9 25 7 29 410 25 8 30 63075A, B 25 9 31 83075A, B 25 9 32 61575B 25 10 11 33 61575, 61575 25 10 34 10365 25 1 35 8400 25 11 36 12365 25 11 37 2050 25 12 38 8400 25 12 39 83080 25 7 40 Y.K.R 26 1 41 63075CF, 83075CF 26 2 42 83075; 83080 26 2 43 10 30 mm, 8 30 mm, 6 30 mm 44 S1040 45 46 13 47 8 D. 1 13 79 2 33 3 3
39 2. 1 1980 2) 3 1000 1 1 4 1 1 1S 6400 1 A 10 mm 50 mm 4 10 mm 10 mm 15 18 mm
40 M : Z 1 SBL 40 mm 6 M CF IF 2 30 20092007 4. 30 1) 1964 50 p. 38 2) 198030