发明名称 |
LASER ILLUMINATING DEVICE AND IMAGE DISPLAY DEVICE |
摘要 |
<p>An object of the invention is to provide a laser illuminating device and an image display device that enable to remove speckle noises in a diffraction field and an image field, uniformly illuminate an illumination plane, and realize miniaturization. A laser illuminating device 100 includes a laser light source 3, a first lens 1 including a plurality of microlenses 10 each having a predetermined numerical aperture in an in-plane direction, each of the microlenses 10 being adapted to expand laser light emitted from the laser light source 3 to thereby superimpose the laser light transmitted through each of the microlenses 10; and a second lens 2 having an effective diameter larger than an effective diameter of the first lens 1, and for compensating for a divergence angle of the laser light expanded by each of the plurality of the microlenses 10.</p> |
申请公布号 |
EP2128694(A4) |
申请公布日期 |
2011.02.23 |
申请号 |
EP20080720487 |
申请日期 |
2008.03.14 |
申请人 |
PANASONIC CORPORATION |
发明人 |
MIZUSHIMA, TETSURO;KASAZUMI, KENICHI;ITOH, TATSUO;SHIKII, SHINICHI |
分类号 |
G03B21/14;F21V5/02;F21V5/04;G02B27/00;H04N5/74 |
主分类号 |
G03B21/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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