Lampard's effort just before half-time clearly crossed the line but Uruguayan referee Jorge Larrionda and his assistant Mauricio Espinosa deemed it not to be a goal.
And Loew accepted the decision was wrong but insisted his team deserved to win against Fabio Capello's team.
According to Sky Sports, Loew said: "What I saw in the television this ball was behind the line, it must have been given as a goal.
"I said to my team at the half-time break, we need to try and score the third goal.
"We knew we could hit England on the counter-attack because they were open. Our players carried it off brilliantly.
"We clearly controlled the game until England's goal, then there was a short critical phase."Germany, who have made it to the last eight of every World Cup since 1954, will face the winners of tonight's match between Mexico and Argentina.
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