lens center

The system utilizes the surface of the lens to the reflected light of a different wavelength, it is reflected back by the spectrometer and the resulting data is transmitted to the computer and using a virtual instrument ( LabVIEW) of a lens center thickness.

该系统利用透镜上下表面反射回不同波长的反射光，经光谱仪将所得数据传输给计算机并利用虚拟仪器（labVIEW）分析出透镜中心厚度。

The coordinate measuring machine is introduced and also the principle of measuring lens center deviation.

介绍了三坐标测量仪，阐述了使用三坐标测量仪测试透镜中心偏差的原理。

Uncertainty Evaluation of Standard Equipment for Spectacle lens ( Lens) Center Transmittance

眼镜片（透镜）中心透射比标准测量装置测量不确定度的评定

The optical center of the rotational hyperboloid and its thick lens

旋转双曲面及其厚透镜的光心

The lensometers is also called measural lens dioptre instrument, to measure spherical lens dioptre, cylindric lens dioptre and axis, prism dioptre, and lens optical center etc.

顶焦度计又称对光机、查片机，可用来测量球光镜镜度、散光镜镜度、棱镜镜度以及散光轴线和光学中心点等，是眼镜片冷加工中必不可少的检测仪器。

The principal points of a thin lens coincide at the center of the lens.

薄透镜的两个主点与透镜中心相重合.

Curve regressions were done to determine the correlations of the distances with the lens surface center and the average radii of curvature at the same distances. Lens surface asymmetric indexes ( LSAI) were calculated as well.

计算离晶状体前表面中心点不同距离处的平均曲率半径并和离中心点的距离做曲线回归，计算晶状体表面非对称性指数（LSAI）。

Approach to the Optical Center of the Rotational Conicoid and It's Thick Lens

旋转二次曲面及其厚透镜的光心探讨

If enabled, bottom of the Element will always face the center of the screen, making the Element spin as the Lens Flare moves around on the screen.

如果启用，元素底部将始终面对着屏幕的中心，使元素旋转同时镜头光晕在屏幕上移动。

We discuss the sources of the measurement uncertainties of standard equipment for spectacle lens ( lens) center transmittance and analyze each components of uncertainty.

重点讨论了眼镜片（透镜）中心透射比标准测量装置测量不确定度的来源，详细分析各不确定度分量的评定。

The Location Fixing of the Optical Center of the Rotational Conicoid Thick Lens

旋转二次曲面厚透镜光心的位置确定

Lens is treated as the most basic optical components, and the positioning accuracy of lens center directly affects the imaging quality of entire optical system. Therefore the measuring technology of optical lens decentration has important significance.

透镜作为组成光学系统最基本的光学元件，透镜中心的定位精度直接影响整个光学系统成像质量，因此透镜中心偏测量技术的研究具有重要意义。

It is shown that by changing the focal length of focal lens and the distance between the axicon and the lens, the center of dark of the bottle beams can be altered effectively.

这些结果表明，改变聚焦透镜的焦距和聚焦透镜到轴棱锥间的距离以及光阑半径，可有效地改变局域空心光束的暗中空区域。

The lens center is clear, so nothing blocks your view.

隐形眼镜的中心很清晰，因此你的视线不会受阻。

As domestic production equipment and technology is relatively backward, the gap with the developed countries in the lens center thickness detection, it affected the production quality of the optical system seriously.

由于国内企业生产设备与工艺相对落后，在透镜中心厚度的检测上与发达国家差距较大，严重影响了光学系统产品的生产质量。

Lens center thickness gauge

透镜中心厚度测量规