公开(公告)号：WO1994007160A1

公开(公告)日：1994-03-31

申请号：PCT/US1993008550

申请日：1993-09-10

Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD, ...

Inventor： THE BOARD OF TRUSTEES OF THE LELAND STANFORD, ... ,  AHARONI, Abraham ,  GOODMAN, Joseph, W. ,  AMITAI, Yaakov

IPC: G02B05/32

CPC classification number: G02B5/32

Abstract: An optical system (12) is disclosed which focuses a polychromatic source to an extended focal pencil (16). The implementation makes use of two (15, 17) holographic optical elements (HOEs) fabricated and aligned to form a deliberate longitudinal color dispersion (16), but to alleviate lateral chromatic effects. Consequently, the HOE doublet focuses different wavelengths of the source to different locations along the optical axis. The strong intensity of the focused wavelengths dominate at each location, so that the overall beam has a near-diffraction-limited 1/e2 spot size and suffers only relatively weak background illumination. An alternative optical system using bulk lenses (80, 82) and several possible applications for the device are also described.

Abstract translation: 公开了一种将多色源聚焦到扩展焦点笔（16）的光学系统（12）。 该实现使用制造和对准的两个（15,17）全息光学元件（HOE）以形成有意的纵向色散（16），而是减轻横向色彩效应。 因此，HOE双峰将源的不同波长沿着光轴聚焦到不同的位置。 聚焦波长的强烈强度在每个位置处占主导地位，使得整个光束具有接近衍射的1 / e2斑点尺寸，并且仅具有较弱的背景照明。 还描述了使用块透镜（80,82）的替代光学系统以及该器件的几种可能的应用。