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发明公开
CN101598273A 照明装置及电光装置 失效 - 权利终止

照明装置及电光装置
摘要：
本发明涉及照明装置及电光装置。低成本且低功耗地构成光学式位置检测单元。照明装置(10)具备：发出照明光(L1)的照明用光源(11)；发出第1位置检测光(L2a)的第1位置检测用光源(12A)；发出第2位置检测光(L2b)的第2位置检测用光源(12B)；第1导光板(13A)，其具有取进照明光及第1位置检测光的第1光入射面(13aa)和出射照明光以及第1位置检测光的与第1光入射面相邻且交叉的光出射面(13ac)；和第2导光板(13B)，其与第1导光板俯视重叠所配置，具有取进第2位置检测光的第2光入射面(13ba)和出射第2位置检测光的与第2光入射面相邻且交叉的第2光出射面(13bc)。
摘要（英）：

An illumination device is provided which includes: an illumination light source that emits an illumination light; a first position-detecting light source that emits a first position detecting light; a second position-detecting light source that emits a second position detecting light; a first light guide plate which is provided with a first light incident surface that introduces the illumination light and the first position detecting light to an inside thereof and a first light emitting surface that is disposed to cross the first light incident surface while being disposed to be adjacent thereto and that emits therefrom the illumination light and the first position detecting light propagating through the inside; and a second light guide plate which is provided with a second light incident surface that is disposed to overlap with the first light guide plate in plan view and that introduces the second position detecting light to an inside thereof and a second light emitting surface that is disposed to cross the second light incident surface while being disposed to be adjacent thereto and that emits therefrom the second position detecting light propagating through the inside concurrently with the first position detecting light.

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