Oculus Rift (DK2) 头戴显示器

为了不让索尼公司最新推出的Project Morpheus虚拟现实装置抢尽风头，Oculus VR揭开了其第二代Oculus Rift开发套件(DK2)的面纱。这款简称DK2（Development Kit 2）的开发套件以先前放出的初版开发套件获得的经验加以改良，大幅提升显示屏幕的分辨率、更新率与反应速度，同时追加红外线光学定位追踪，提供更精确的动态回馈。

DK2的显示面板从DK1的1280×800 LCD液晶屏幕升级为1920×1080的OLED屏幕，更新率从60Hz提升为最高75Hz。通过OLED的低延迟特性，能在高动态下提供清晰无残影的画面。内建延迟测试电路，能以毫秒为单位监测输入与显示的延迟，让开发者得以最佳化自己的内容呈现。与早期型号相比，其造成的运动模糊及颤抖问题也得到了很好的解决。

DK2的光学系统可带来100度的视域，并通过一根3米的可拆卸式线缆(HDMI 1.4b+USB 2.0)连接至主机。为了减少图像和追踪的延时问题，DK2还内建了一个延时测试系统。另外，改进后头戴式装置，还可以通过一个外置摄像头，追踪该装置的红外LED。理论上，玩家可以借此实现抬头或倾斜着看一面墙的功能或者在游戏中进行闪避操作。

除了DK1既有的加速度感测器、陀螺仪感测器与地磁感测器定位之外，DK2还追加红外线光学定位追踪，通过外接的近红外线CMOS感测器摄影机与本体内嵌的隐藏红外线LED，现在DK2不只能追踪使用者头部的方向，还能精确追踪使用者头部的位置，提供更逼真的虚拟实境回馈。

每套Oculus Rift开发套件都内含Oculus软件开发套件（SDK），其中包括原始码、说明文件与范例程序码，目前支持的Windows、Mac OS与Linux操作系统。另外还提供能与Unreal DK、Unreal Engine 4及Unity 4整合的套装引擎，让开发者能更轻松快速地着手开发虚拟实境游戏。

Oculus Rift Development Kit 2现已上市，售价为350美元（约合人民币2100元），预计7月可向开发者们出货。

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