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Opera windows are small porthole sized side windows in the C-pillar of some cars. Typically offered in unison with a vinyl roof, they were a very common design feature of American automobiles during the 1970s. The design "... would prove to be very popular, indicated by its imitation by almost every domestic manufacturer. The opera window was a fixed rear side window surrounded by a vinyl roof."〔(Cadillac Eldorado story ), Retrieved on October 22, 2007.〕 ==History== This design element was used during the classical era of automobile styling. For example, “...the Elcar in 1924 was good looking...and even a fabric top in the style of a brougham with oval opera windows framed by landau bars....〔William S. Locke (2000) Elcar and Pratt Automobiles: The Complete History, McFarland & Company, ISBN 0-7864-0956-8, page 71.〕 Opera windows saw their demise in the 1930s. Perhaps the most notable return was the "porthole" in the 1956-57 Ford Thunderbird. It was provided as an option to improve rear-quarter visibility with the removable hardtop in place...〔see the 1955-1957 Ford Thunderbird, Retrieved on July 7, 2007.〕 Opera windows were once again reintroduced on the 1972 Lincoln Continental Mark IV as an optional luxury feature, but it was almost universally ordered. Adding to the ostentatious appearance, the Lincoln installed a small light at the top of the window on the inside that could be turned on by rear seat passengers. It was separate from the often included rear seat reading lights. During the 1970s they became a very common design element. “...The hottest thing going was the "porthole" window in the rear side pillar - called "opera windows" that came in during the horse and buggy ()...〔Robert Szudarek (2000) The First Century of the Detroit Auto Show, SAE, ISBN 0-7680-0502-7, page 210.〕 Most often, they were applied on two-door hardtop or coupé models and in all types of vehicles, from economy compacts to luxury brands. They also “were recognition elements” in the specialty, personal-sized car market.〔Paul A. Herd and Mike Mueller (1994) Charger, Road Runner, and Super Bee, MotorBooks/MBI Publishing Company ISBN 0-87938-844-7, Page 119.〕 Practically all cars in the personal luxury market offered these windows as part of their seemingly vintage-oriented styling. The windows were intended to offset the significant blind spots created by the very wide C-pillars that were characteristic of American cars produced at this time. Even narrow opera windows helped rear visibility.〔(Dodge Magnum story ), Retrieved on October 22, 2007.〕 In an age of decreasing dimensions and increasingly common use of non-opening rear side windows on 2-door models, the small opera windows helped rear passengers to be somewhat less claustrophobic. These windows were usually non-functional; however, in the case of the AMC Matador coupe NASCAR racers, the small windows that came with the Barcelona II trim package actually helped to clean up the aerodynamics when such windows were open to the wind under racing conditions.〔(AMC Matador small window for NASCAR ), Retrieved on October 22, 2007.〕 In some cars, an additional feature was the so-called opera light that was mounted on the outside of the B-pillar or C-pillar and lit up when the exterior lights were turned on. (See 1980s Lincoln Town Car, 1979-91 Mercury Grand Marquis, or high-end models of the 1988-1990 Oldsmobile 88). Opera windows had fallen into disuse by the mid-1980s, as changing automotive styles moved away from the upright notchback. Smaller, more aerodynamic cars made opera windows appear gaudy or out of place. Contemporary examples of opera windows are sometimes found on modified or customized automobiles. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Opera window」の詳細全文を読む スポンサード リンク
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