| 摘要 |
A dichroic beam splitter (13) design comprising a single unit assembly having a reduced number of components to provide for diminished weight and bulk, simplicity of alignment, greater optical efficiency and fewer steps in the assembly process to produce the device. The beam splitter includes two identical right triangular prisms (14, 17), a parallelogram shaped element (15), and a trapezoidal shaped element (16), all bonded together to form the single, L-shaped, beam splitter (13). High reliability, and ease of identification of component elements due to unique geometry, is provided by this approach. This device is especially useful for computer optical disk storage devices. |
