查询词典 Fresnel lens

A method of making the Fresnel lens is described.

本文还描述了制造菲涅耳透镜的方法。

Four kinds of laser source are used to measure the diffractive efficiency of Fresnel lens.

使用四种不同光源，对菲涅耳透镜的衍射效率进行测试。

Influence of phase errors upon the diffraction efficiency of the phase fresnel lens［J］.

位相误差对菲涅耳透镜衍射效率的影响［J］。

With the development of society and demand of energy economy, it is the new direction and development trend that improving the focus and reducing optical losses of Fresnel lens.

随着社会的发展和节能经济的需求，提高菲涅尔透镜的聚焦性，降低透镜的光学损失成为了菲涅尔透镜研究的新动向和发展趋势。

Finally on this basis, a new type virtual second parabolic Fresnel lens model is established by Pro/ENGINEER.

最后在此基础上，以Pro／ENGINEER为工具，建立了二次抛物面型菲涅尔透镜的模型。

The results show that the maximum resultant displacement of the Fresnel lens occurred at the corners of the arrays of photovoltaic concentrators for the given HCPV system at all elevation angles.

模拟分析结果显示，对於给定之聚光型太阳能发电系统在任何仰角中，聚光透镜最大之位移量将发生於各个集光器角落之聚光透镜上，并随著风速的增加而增加。

The Fresnel lens in the optical receptor spotlights the headlamp beams to form their image at the 1-meter distance between the optical receptor and headlamps. CMOS camera as an image sensor, takes the photos of their images, which are captured by VG-M201, The application of some digital image processing techniques to these images, such as edge-picking up、 least-square fitting-curve algorithm, is to calculate the offset position/angle of optical axis of the high beams and the nodical offset of the unsymmetrical facular light and shade cut-off line of the low beams.

系统的图像采集工作是利用受光箱中的菲涅耳透镜在1米的测量距离上聚合前照灯灯光，由CMOS摄像头作为图像传感器件，照入灯光远光光斑和非对称近光图像，由嵌入式处理器对捕获的图像运用边缘提取、最小二乘法拟合曲线等数字图像处理技术计算出远光主光轴偏移角度以及非对称近光光斑明暗截止线拐点的偏移，实现了前照灯近光非对称光斑的自动测量。

Underneath the path of Fresnel lens focuses, obtains a similar V curve, uses this curve to make the array-like design, causes the small DC deceleration motor to make the most effective application.

利用透镜下方聚焦的轨迹，得到一类似V型的曲线，利用此曲线做成阵列式的设计，使小型直流减速马达做最有效率的应用。

They are provided with red coloured glass and Fresnel lens.

产品带有红色透明玻璃和镜头。

The effects of incident wavelength on diffractive efficiency of Fresnel lens are analyzed.

针对宽带折衍混合光学系统，分析不同入射光波波长对菲涅耳透镜衍射效率的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。