多功能鼠标光路的设计与分析

 多功能无线光电鼠标运用2个图像摄影芯片，通过轨迹球滚动和鼠标座身移动两种方式实现光标移动。通过比较原始鼠标光路中2个图像摄影芯片能够接收到的最小光通量百分比，选择ADNS7530作为鼠标中唯一保留的图像摄影芯片。保持轨迹球光路不变，鼠标座光路中增加一个与轨迹球光路相同的LED光源。比较鼠标座的桌面反射光分别通过轨迹球反射、棱镜反射和平面镜反射后，最终到达图像摄影芯片的光通量百分比。确定并验证了鼠标座光路采用平面反射镜的设计方案，实现了无线空中操作鼠标轨迹球光路和鼠标座光路共用1个图像摄影芯片的目的。

Design and analysis of optical path for multi-function mouse

The multi-functional wireless optical mouse uses two image photography chips to realize cursor movement through the track ball rolling and the mouse base moving. First, we compared the percentages of luminous flux received by the two image photography chips in the original mouse optical path and the chip ADNS7530 which had smaller flux was remained only. Second, keeping the light path of track ball unchanged, we added a LED which had the same optical path as the track ball source in the mouse base optical path. After the desktop reflected light of mouse base was reflected through the track ball, prism and plane mirror respectively, we compared the flux percentages eventually reaching to the image photography chip. Finally, the design that the mouse base optical path was changed by the plane mirror was verified and the wireless air mouse using one image photography chip to operate both the track ball light path and the mouse base light path was achieved.