{"id":9062,"date":"2023-04-28T02:53:41","date_gmt":"2023-04-27T17:53:41","guid":{"rendered":"https:\/\/www11.ieice.org\/cs\/ap\/wp\/?page_id=9062"},"modified":"2026-06-25T15:33:18","modified_gmt":"2026-06-25T06:33:18","slug":"double_knife_edge","status":"publish","type":"page","link":"https:\/\/www.ieice.org\/cs\/ap\/misc\/denpan-db\/prop_model_db\/model_list\/diffraction\/double_knife_edge\/","title":{"rendered":"\u30c0\u30d6\u30eb\u30ca\u30a4\u30d5\u30a8\u30c3\u30b8"},"content":{"rendered":"
<\/div>

<\/path><\/svg><\/i> \"Loading\"<\/p>

<\/div>(since 2025\/12\/5)<\/p>\n\n\n\n

\u30e2\u30c7\u30eb\u306e\u8aac\u660e<\/h3>\n\n\n
\n
\"\"
\u56f3\uff11\u3000\u30c0\u30d6\u30eb\u30ca\u30a4\u30d5\u30a8\u30c3\u30b8<\/span><\/figcaption><\/figure><\/div>\n\n\n

\u56f3\uff11\u306e\u3088\u3046\u306b\u4e8c\u3064\u306e\u969c\u5bb3\u7269\u304c\u96e2\u308c\u3066\u3044\u308b\u5834\u5408\uff0c\u56de\u6298\u640d\u5931\\(L\\)[dB]\u306f
\\(
L = L_1 + L_2 + L_c
\\tag{1}
\\)<\/p>\n\n\n\n

\u3067\u8fd1\u4f3c\u7684\u306b\u8a08\u7b97\u3067\u304d\u308b\uff0e\u305f\u3060\u3057\uff0c\\(L_1\\)\u306f\u7b2c\u4e00\u969c\u5bb3\u7269\u306b\u3088\u308b\u56de\u6298\u640d\u5931[dB]\u3067\uff0c\u56f31\u306b\u793a\u3059\u3088\u3046\u306b\u8ddd\u96e2\\(a\\)[m]\uff0c\\(b\\)[m]\u3068\u9ad8\u3055\\(h_1’\\)[m]\u3092\u7528\u3044\uff0c\u30b7\u30f3\u30b0\u30eb\u30ca\u30a4\u30d5\u30a8\u30c3\u30b8<\/a>\u3067\u793a\u3057\u305f\u5f0f(4)\uff0c(5)\u306b\u3088\u308a\u6c42\u3081\u308b\uff0e\u307e\u305f\\(L_2\\)\u306f\u7b2c\u4e8c\u969c\u5bb3\u7269\u306b\u3088\u308b\u56de\u6298\u640d\u5931[dB]\u3067\u8ddd\u96e2\\(b\\)[m]\uff0c\\(c\\)[m]\u3068\u9ad8\u3055\\(h_2\u2019\\)[m]\u3092\u7528\u3044\uff0c\\(L_1\\)\u3068\u540c\u69d8\u306b\u5f0f(4)\uff0c(5)\u306b\u3088\u308a\u6c42\u3081\u308b\uff0e\\(L_c\\)\u306f\u4ed8\u52a0\u640d\u5931[dB]\u3067\uff0c<\/p>\n\n\n\n

\\(
{\\displaystyle
L_c = 10 \\log \\left\\{ \\frac{ (a + b) (b + c) }{ b (a + b + c) } \\right\\}
\\tag{2}
}
\\)<\/p>\n\n\n\n

\u3088\u308a\u6c42\u3081\u3089\u308c\u308b\u304c\uff0c\u5f0f\uff08\uff12\uff09\u306f\\(L_1\\)\uff0c\\(L_2\\)\u304c\u3068\u3082\u306b15dB\u4ee5\u4e0a\u306e\u5834\u5408\u306b\u6709\u52b9\u3067\u3042\u308a\uff0c\u4e8c\u3064\u306e\u969c\u5bb3\u7269\u306b\u3088\u308b\u56de\u6298\u640d\u5931\u304c\u307b\u307c\u7b49\u3057\u3044\u3068\u304d\uff0c\u7279\u306b\u7cbe\u5ea6\u304c\u9ad8\u3044\uff0e<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u30d1\u30e9\u30e1\u30fc\u30bf<\/h3>\n\n\n\n
\u8a18\u53f7<\/td>\u30d1\u30e9\u30e1\u30fc\u30bf\u8aac\u660e\uff3b\u5358\u4f4d]<\/td>\u30d1\u30e9\u30e1\u30fc\u30bf\u7bc4\u56f2<\/td><\/tr>
\\(L\\)<\/td>\u56de\u6298\u640d\u5931\u3000[dB]<\/td>\uff0d<\/td><\/tr>
\\(L_1\\)<\/td>\u7b2c\u4e00\u969c\u5bb3\u7269\u306b\u3088\u308b\u56de\u6298\u640d\u5931 [dB]<\/td>\uff0d<\/td><\/tr>
\\(L_2\\)<\/td>\u7b2c\u4e8c\u969c\u5bb3\u7269\u306b\u3088\u308b\u56de\u6298\u640d\u5931 [dB]<\/td>\uff0d<\/td><\/tr>
\\(L_c\\)<\/td>\u4ed8\u52a0\u640d\u5931 [dB]<\/td>\uff0d<\/td><\/tr>
\\(a\\)<\/td>\u9001\u4fe1\u70b9\u304b\u3089\u7b2c\u4e00\u969c\u5bb3\u7269\u307e\u3067\u306e\u8ddd\u96e2 [m]<\/td>\uff0d<\/td><\/tr>
\\(b\\)<\/td>\u7b2c\u4e00\u969c\u5bb3\u7269\u304b\u3089\u7b2c\u4e8c\u969c\u5bb3\u7269\u307e\u3067\u306e\u8ddd\u96e2\u3000[m]<\/td>\uff0d<\/td><\/tr>
\\(c\\)<\/td>\u7b2c\u4e8c\u969c\u5bb3\u7269\u304b\u3089\u53d7\u4fe1\u70b9\u307e\u3067\u306e\u8ddd\u96e2\u3000[m]<\/td>\uff0d<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

\u30e2\u30c7\u30eb\u306e\u8aac\u660e \u56f3\uff11\u306e\u3088\u3046\u306b\u4e8c\u3064\u306e\u969c\u5bb3\u7269\u304c\u96e2\u308c\u3066\u3044\u308b\u5834\u5408\uff0c\u56de\u6298\u640d\u5931\\(L\\)[dB]\u306f\\( L = L_1 + L_2 + L_c \\tag{1}\\) \u3067\u8fd1\u4f3c\u7684\u306b\u8a08\u7b97\u3067\u304d\u308b\uff0e\u305f\u3060\u3057\uff0c\\(L_1\\)\u306f\u7b2c\u4e00\u969c\u5bb3\u7269\u306b\u3088\u308b\u56de\u6298\u640d\u5931 […]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":9263,"menu_order":102,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-9062","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/9062","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/comments?post=9062"}],"version-history":[{"count":13,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/9062\/revisions"}],"predecessor-version":[{"id":14847,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/9062\/revisions\/14847"}],"up":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/9263"}],"wp:attachment":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/media?parent=9062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}