Distortion free dewar/coldfinger assembly
    1.
    发明授权
    Distortion free dewar/coldfinger assembly 失效
    无扭曲的杜瓦瓶/冷指甲组件

    公开(公告)号:US4952810A

    公开(公告)日:1990-08-28

    申请号:US397710

    申请日:1989-08-23

    IPC分类号: F17C3/08 F25D19/00 G01J5/06

    摘要: An infrared detector assembly (10) of the type used in munitions and night vision systems having an improved coldfinger assembly (42). Such detector assemblies (10) include a tubular coldfinger (22) which is surrounded by a vacuum and an end-cap (28) mounted to the coldfinger tube (22) to define a cold end (24) which supports the infrared detector array (30) and related components. In accordance with this invention, the coldfinger tube (22) is a thin-walled titanium cylinder and the end-cap (28) is made of tungsten. The components are metallurgically bonded at the cold end (24) by an active brazing alloy deposited during vacuum furnace brazing. The titanium coldfinger (22) provides the necessary bending stiffness to support cold end components. The tungsten end-cap (28) provides a low distortion, thermally stable focal-plane. The metallurgical bond (46) provides for a hermetic seal which inhibits structural distortion during brazing, and during cyclical cooling of the detector assembly (10).

    摘要翻译: 一种用于弹药和夜视系统的红外探测器组件(10),具有改进的冷锋组件(42)。 这种检测器组件(10)包括由真空包围的管状冷指针(22)和安装到冷引导管(22)的端帽(28),以限定支撑红外检测器阵列的冷端(24) 30)和相关组件。 根据本发明,冷引导管(22)是薄壁钛圆筒,端盖(28)由钨制成。 组件通过在真空炉钎焊期间沉积的活性钎焊合金在冷端(24)上冶金结合。 钛冷手指(22)提供必要的弯曲刚度以支持冷端部件。 钨端盖(28)提供低失真,热稳定的焦平面。 冶金结合(46)提供了一种在钎焊期间以及在周期性冷却检测器组件(10)期间抑制结构变形的气密密封件。

    Low distortion focal plane platform
    2.
    发明授权
    Low distortion focal plane platform 失效
    低失真焦平面平台

    公开(公告)号:US4954708A

    公开(公告)日:1990-09-04

    申请号:US397808

    申请日:1989-08-23

    IPC分类号: F25D19/00 G01J5/06

    CPC分类号: F25D19/006 G01J5/061

    摘要: An infrared detector assembly (12) of the type used in munitions and night vision systems having an improved focal plane platform (10). The focal plane platform (10) includes an end-cap (32) made from tungsten. Adhesively bonded to end-cap (32) is a ceramic mounting board (34). Ceramic mounting board (34) further comprises gold trace pattern (50) for conducting electrical signals generated by hybrid detector (26) to external control electronics. The improved focal plane platform (10) provides a relatively distortion free, thermally stable mounting platform upon which detector (26) is secured. Premature thermal fatigue failure of the hybrid detector is thereby inhibited.

    摘要翻译: 一种用于具有改进的焦平面平台(10)的弹药和夜视系统中类型的红外探测器组件(12)。 焦平面平台(10)包括由钨制成的端盖(32)。 粘结在端帽(32)上的是陶瓷安装板(34)。 陶瓷安装板(34)还包括用于将由混合式检测器(26)产生的电信号传导到外部控制电子装置的金迹线图案(50)。 改进的焦平面平台(10)提供了相对无失真的,热稳定的安装平台,检测器(26)固定在该平台上。 由此可以抑制混合式检测器的过早的热疲劳失效。