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CN103080630B 使用了相干光源的照明装置 有权

使用了相干光源的照明装置
摘要：
使激光光源(50)所产生的激光束(L50)被光束扫射装置(60)反射，照射至全息图记录介质(45)。在全息图记录介质(45)中，使用会聚于扫射基点(B)的参照光将散射板的像(35)记录为全息图。光束扫射装置(60)使激光束(L50)在扫射基点(B)弯折后照射至全息图记录介质(45)。此时，使激光束的弯折状态随时间变化，从而使弯折后的激光束(L60)对全息图记录介质(45)的照射位置随时间变化。与束的照射位置无关，来自全息图记录介质(45)的衍射光(L45)使相同散射板的再现像(35)在相同位置再现。在照明对象物(70)的受光面(R)通过全息图的再现像(35)形成斑点受到抑制后的照明点。
摘要（英）：

A laser beam (L50) generated by a laser light source (50) is reflected by a light beam scanning device (60), and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a scatter plate is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device (60) bends the laser beam (L50) at the scanning origin (B) and irradiates it onto the hologram recording medium (45). At this time, scanning is carried out by changing the bending mode of the laser beam with time so that the irradiation position of the bent laser beam (L60) on the hologram recording medium (45) changes with time. Regardless of the beam irradiation position, diffracted light (L45) from the hologram recording medium (45) reproduces the same reproduction image (35) of the scatter plate at the same position. An illumination spot in which speckles are reduced is formed on the light receiving surface (R) of an illuminating object (70) by the reproduction image (35) of the hologram.

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