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    • 3. 发明申请
    • IMAGING LENS
    • 成像镜头
    • US20120063012A1
    • 2012-03-15
    • US13013164
    • 2011-01-25
    • POCHE LEEKUO-WEN CHANGLONG-SHENG LIAO
    • POCHE LEEKUO-WEN CHANGLONG-SHENG LIAO
    • G02B9/34
    • G02B13/004G02B9/34G02B27/0025
    • An imaging lens includes plastic-made first, second, third, and fourth lens elements arranged in the given order from an object side to an imaging side. The first lens element has a positive focusing power and is biconvex. The second lens element has a negative focusing power, is biconcave, and has an abbe number not greater than 30. The third lens element has a positive focusing power and has a convex imaging-side surface facing toward the imaging side. The fourth lens element has an imaging-side surface formed with a concave area in a vicinity of an optical axis of the fourth lens element. The imaging lens further includes an aperture stop disposed between the first and second lens elements.
    • 成像透镜包括从物体侧到成像侧以给定顺序布置的塑料制的第一,第二,第三和第四透镜元件。 第一透镜元件具有正的聚焦能力并且是双凸形的。 第二透镜元件具有负聚焦功率,是双凹槽,并且具有不大于30的阿贝数。第三透镜元件具有正的聚焦能力并且具有朝向成像侧的凸形成像侧表面。 第四透镜元件具有在第四透镜元件的光轴附近形成有凹入区域的成像侧表面。 成像透镜还包括设置在第一和第二透镜元件之间的孔径光阑。
    • 6. 发明申请
    • Projector
    • 投影机
    • US20070024828A1
    • 2007-02-01
    • US11491155
    • 2006-07-24
    • Long-Sheng LiaoSung-Nan ChenYi-Hsueh Chen
    • Long-Sheng LiaoSung-Nan ChenYi-Hsueh Chen
    • G03B21/00
    • G03B21/005
    • The present invention provides a projector utilizing two projecting light beams to enhance the resolutions thereof and comprises a light source, a light valve, an ultrasonic medium, a piezoelectric material, and a high-frequency oscillator. The light source device is used for generating light beams to project onto the light valve to form imaging light beams. The ultrasonic medium is passed through the imaging light beams with an incident angle, the piezoelectric material is disposed on one end of the ultrasonic medium, and the high-frequency oscillator electrically connects to the piezoelectric material for generating ultrasonic waves. The ultrasonic waves from the piezoelectric material are delivered to the ultrasonic medium and the imaging light beams pass through the ultrasonic medium to form a diffraction light beam along a first direction and a transmission light beam along a second direction are produced in order to increase resolution of images projected from the projector.
    • 本发明提供一种利用两个投影光束来增强其分辨率的投影仪,其包括光源,光阀,超声介质,压电材料和高频振荡器。 光源装置用于产生投射到光阀上的光束以形成成像光束。 超声波介质以入射角通过成像光束,压电材料设置在超声介质的一端,高频振荡器电连接到用于产生超声波的压电材料。 来自压电材料的超声波被传送到超声波介质,并且成像光束通过超声介质以形成沿着第一方向的衍射光束,并且产生沿着第二方向的透射光束,以便提高分辨率 从投影机投影的图像。