focal length of objective glass

When the measuring system of point scanning confocal microscope is designed,the parameter of object lens is important because the measuring precision of the system are determined by the numerical aperture of lens.

在设计点扫描激光共焦显微镜测量系统时 ,物镜参数的选择是至关重要的 ,因为它的数值孔径大小直接影响着系统的测量精度。

Moreover a devise idea is put forward that hologram incorporates object lens that can adapt to the Panasoni.

后半部分对DVD的核心部分——激光头的工作原理及其满足高密度和兼容性要求的实现方法进行了详细阐述，并提出了适应松下两焦点光头的全息板与物镜一体化设计思想，为产品简单化的追求提供了可靠的技术保证。

A discussion about the working distance of magnetic electron objective of SEM-EPMA;

SEM-EPMA中电磁物镜工作距离的探讨

Automatic Measurement for a Big Batch of Telescopic Objectives;

大批量生产望远物镜的自动测量

A visual objective resolution tester is designed and prepared in this paper.

被测试的物镜 ,在 3种仪器上初测时偏心较大 ,然后该物镜进行重新装配 ,校正中心 ,又一一测试数据 ,最后给出初测和复测对比测试数据。

Design of dual-focus annular objective lens used in DVD pick-up head;

用于DVD光学头的刻环型双焦点物镜的设计

In the next generation of optical disk system,GaN laser and high numerical aperture(NA)objective lens are two key components.

对于下一代光盘系统而言,GaN激光器和高数值孔径(NA)的物镜是关键组件。

In designing and manufacturing objective lens for optical disk,It is found that synthesis performance of those made of PMMA are quite interior compared with those made of new optical plastics.

在光盘光学头物镜的设计和制造中 ,发现将PMMA应用到DVD物镜中时其综合性能明显比不上采用新型光学塑料的物镜。

Design of a photographic objective using cubic phase plate;

含三次位相元件照相物镜的设计

In order to realize synthetic coaxiality measurement for position deviations and angle deviations simultaneously,a laser beam-spot receiver system consisting of a receiver lens,beam splitter prisms,and CCD based on laser collimation was established.

该系统由接收物镜、分光棱镜和CCD构成。