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    • 3. 发明授权
    • Flash unit
    • 闪光灯组件
    • US06404990B2
    • 2002-06-11
    • US09947373
    • 2001-09-07
    • Makoto IsozakiJunichi TakagiKazumi KoikeMitsuhiro MoriyaKeiji UchiyamaYukitsugu Hata
    • Makoto IsozakiJunichi TakagiKazumi KoikeMitsuhiro MoriyaKeiji UchiyamaYukitsugu Hata
    • G03B1505
    • G03B7/16G03B15/05G03B2215/0503H05B41/32
    • In a flash circuit of a flash device, a Zener diode (37) is connected to a tap point (23f) located at an intermediate position of a secondary coil of an oscillation transformer (23). The oscillation transformer (23) and an oscillation transistor (22) constitutes an oscillation circuit. A potential at the tap point (23f) changes proportionally to a voltage charged in a main capacitor (41). When the main capacitor (41) is charged up to a set voltage, the Zener diode (37) conducts a Zener current, which activates a stopping transistor (38) and thus deactivates the oscillation circuit. When a flash charge switch (51) is turned on, an end of a light guide portion of a charge condition indicator (60) protrudes out of a lens-fitted film unit. When the main capacitor (41) is charged up to the set voltage, a light emission element starts lighting and the light from the light emission element is projected from the end of the light guide portion.
    • 在闪光装置的闪光电路中,齐纳二极管(37)连接到位于振荡变压器(23)的次级线圈的中间位置的抽头点(23f)。 振荡变压器(23)和振荡晶体管(22)构成振荡电路。 分接点(23f)处的电位与主电容器(41)中充电的电压成比例地变化。 当主电容器(41)被充电至设定电压时,齐纳二极管(37)导通齐纳电流,其激活停止晶体管(38),从而使振荡电路无效。 当闪光充电开关(51)接通时,充电状态指示器(60)的导光部分的一端从配有镜头的胶片单元突出。 当主电容器(41)被充电至设定电压时,发光元件开始点亮,并且来自发光元件的光从导光部分的端部突出。
    • 5. 发明授权
    • Lens-fitted photo film unit having transparent parts
    • 具有透明部件的带镜头的摄影胶片单元
    • US06766108B2
    • 2004-07-20
    • US10166121
    • 2002-06-11
    • Keiji Uchiyama
    • Keiji Uchiyama
    • G03B1702
    • G03B17/02G03B17/08Y10T428/31605
    • A lens-fitted photo film unit of a waterproof type comprises a unit body covered with a case body and a lid member. A front window and a top window of the case body are made of transparent plastic. The lid member is also made of the transparent plastic. Methacrylate styrene resin is utilized as the transparent plastic, which is used for a taking lens, a viewfinder lens, and an underwater case constituted of the case body and the lid member. This transparent plastic is hardly clouded even if cosmetics of suntan lotion and so forth adhere thereto. Moreover, a poisonous gas causing photographic-film fog is prevented from rising so that photographic properties are not damaged.
    • 具有防水型镜头的摄影胶片单元包括被壳体和盖构件覆盖的单元体。 箱体的前窗和顶窗由透明塑料制成。 盖构件也由透明塑料制成。 甲基丙烯酸苯乙烯树脂用作透明塑料,其用于由壳体和盖构件构成的拍摄透镜,取景器透镜和水下壳体。 这种透明塑料即使是防晒霜等的化妆品也不会发生混浊。 此外,防止引起照相胶片雾的有毒气体升高,使得照相特性不被损坏。