公开(公告)号：KR1020020006388A

公开(公告)日：2002-01-19

申请号：KR1020000040022

申请日：2000-07-12

Applicant: 한국과학기술연구원

Inventor： 이혁수 ,  전형욱 ,  최용진 ,  장승필 ,  손정영

IPC: G02B5/22

CPC classification number: G02B27/0927 ,  G02B5/205 ,  G02B27/09 ,  G02B27/0938 ,  G02B27/58

Abstract: PURPOSE: A continuous neutral density filter is provided to freely make a filter with desired thickness to control intensity distribution of a beam by controlling absorptivity of beam in accordance with the thickness of medium. CONSTITUTION: A continuous neutral density filter is absorbent type and comprises a first lens and a second lens(17). The first lens controls intensity shape of beam such that the profile of an exit plane(18b) of the filter being of desired optical density function, that is continuous variable thickness, to a plane(18a) of incidence perpendicular to optic axis. The second lens has a plane(17a) of incidence and a vertical exit plane(17b). The plane of incidence has a shape opposite to the exit plane of the first lens to prevent shape damage of the beam emitted from the first lens. Towards center portion of the filter, attenuation of passage beam is smaller, and similarly, closer to the circumference of the filter attenuation of the beam is larger.

Abstract translation: 目的：提供连续的中性密度滤光片，以自由地制造具有所需厚度的滤光片，以通过根据介质的厚度控制光束的吸收率来控制光束的强度分布。 构成：连续的中性密度过滤器是吸收型的，包括第一透镜和第二透镜（17）。 第一透镜控制光束的强度形状，使得滤光器的出射平面（18b）的轮廓具有期望的光学密度（即连续可变厚度）到垂直于光轴的入射平面（18a）。 第二透镜具有入射平面（17a）和垂直出射平面（17b）。 入射平面具有与第一透镜的出射平面相反的形状，以防止从第一透镜发射的光束的形状损坏。 朝向过滤器的中心部分，通道光束的衰减较小，并且类似地，更靠近光束的滤光器衰减的圆周较大。

公开(公告)号：KR100379246B1

公开(公告)日：2003-04-08

申请号：KR1020000040022

申请日：2000-07-12

Applicant: 한국과학기술연구원

Inventor： 이혁수 ,  전형욱 ,  최용진 ,  장승필 ,  손정영

IPC: G02B5/22

CPC classification number: G02B27/0927 ,  G02B5/205 ,  G02B27/09 ,  G02B27/0938 ,  G02B27/58

Abstract: An absorption type continuous neutral density filter controls an intensity distribution of a light beam from a laser to provide the intensity distribution of the light beam desired by an user. In the filter, the intensity distribution of the light beam is controlled by adjusting absorption of the light beam by the varying thickness of medium of the filter. This control of the distribution of the light intensity is accomplished by predefining the variance of thickness of the filter to a form required by the user. As a result, the continuous neutral density filter can be easily fabricated.

Abstract translation: 吸收型连续中性密度滤光片控制来自激光器的光束的强度分布，以提供用户所需的光束的强度分布。 在滤光器中，光束的强度分布通过调整滤光器介质厚度的变化来调整光束的吸收来控制。 光强度分布的这种控制是通过将滤光片厚度的变化预定义为用户所需的形式来实现的。 结果，可以容易地制造连续中性密度滤光片。