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The invention relates to a light pumping system for all-solid laser, particularly a light pumping system for disc type laser, comprising heat sink, laser crystal, optical fiber, plane reflector, a first concave reflector, a second concave reflector, and a third concave reflector, and adopting a structure that the plane reflector is between the optical fiber and the first concave reflector, to make the LD and laser cavity on the same side of the laser crystal, thus reducing the packaged size of the laser; the invention fixes the plane reflector on the heat sink to reduce the inclined incident angle of the pumped light beam, thus the pumped light can be fully absorbed, and the invention solves the problem of pumping efficiency and largely reduces the bulk of the laser, beneficial to the all curing of the product and ensuring the cooling requirement of the laser crystal.

本发明涉及全固体激光器的光泵浦系统，特别是一种盘式激光器的光泵浦系统。包括热沉1、激光晶体2、光纤3、平面反射镜4、第一凹面反射镜5、第二凹面反射镜6、第三凹面反射镜7，本发明采用平面反射镜位于光纤与第一凹面反射镜之间的结构，使LD和激光腔位于本发明激光晶体的同一侧，从而减小了激光器的封装尺寸；本发明将平面反射镜固定在热沉上，使泵浦光束斜入射角减小，泵浦光则能充分吸收，为此，本发明解决背景技术采用第一凹面反射镜使泵浦光束斜入射角过大引起的像散，泵浦光斑变形引起泵浦效率降低问题，使得本发明可选用大面积半导体制冷器，避免使用水冷，则激光器的体积大大减少，有利于产品的全固化，保证了激光晶体的散热要求。

An optical element such as a rear projection screen for an image display device comprises at least two substantially rigid sheet members each having a first major surface and a second major surface providing a plane of incidence and a plane of emergence, respectively, through which light is transmitted sequentially. A first sheet member comprises a Fresnel lens, and a second sheet member comprises a lenticular lens array on each of the major surfaces thereof.

一种光学元件，例如用于图象显示装置的背投式屏幕（1），包括至少两个基本为刚性各具第一主表面（21；31）和第二主表面（22，32）的板部件（2；3），分别提供顺序穿过光线（10）的入射面和出射面，第一板部件（2）和第二板部件（3）在其各个主表面（31，32）上分别包含一个菲涅耳透镜（24）和一个双凸透镜阵列33，35。

Platt's says that first-quarter Chinese oil demand fell 4.8% compared with the first quarter of last year.

Platt称第一季度中国的石油需求与去年同期相比，减少了4.85。

Get your free pocket-size St. John Ambulance First Aid Kit and Basic First Aid Guide.

获得你的免费袖珍圣约翰急救包和基本急救指南。

The first with a TFT screen, the first with palm rests, and had an integrated pointing device.

与TFT屏幕的第一，首先在于与Palm，并有一个综合的指针设备。

The first lady said the presidential pooch celebrated his first birthday earlier this month with a Rose Garden party.

第一夫人说，一个月前刚为总统的这只狗在玫瑰园宴会上庆祝了它的第一个生日。

Much has been written about the Hughes/Plath relationship since that first portentous meeting, but few can doubt that these two brilliantly creative people were enormously attracted to one another, almost from the moment they were first introduced.

许多人已书面关于休斯/普拉思关系，因为这首portentous会议，但很少人能怀疑，这两名出色的创作人，极大地吸引了另外一个人，几乎从一时刻，他们首先介绍了。

Compounds 4 and 5 are isolated from Potentilla for the first time; compouds 17 are isolated from this plant for the first time.

化合物4、5为首次从委陵菜属植物中分离得到，化合物1~7均为首次从多茎委陵菜中分离得到。

We are possess of full management institution, precedency technology level, advance making skill and according with manage guideline of "First of quantity""First of customer" as builting long and stable cooperation business.

并于2002年6月通过ISO9001：2000质量管理体系认证产品，现具有健全的管理制度、领先的技术水平，先进的制造工艺；本着"质量至上""顾客至上"的经营宗旨，致力于和客户建立长期、稳定的合作伙伴关系。

Logical reasoning is the basis of artificial intelligence, the first-order predicate logic belonging to logic is a knowledge representation widely used, therefore,it is a meaningful task to study the reasoning problem of first-order predicate logic .

逻辑推理是人工智能的基础，而逻辑中的一阶谓词逻辑是使用较为广泛的知识表示方法，因此研究一阶谓词逻辑的推理问题是一项很有意义的工作。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。