Features of designing objectives telecentric in the object space are discussed. The optical layout of three telecentric objectives developed for dimensional inspection systems using the shadow projection method is presented. A method for monitoring the quality of manufacture of such objectives having small...
C、物方远心系统 Object space telecentrc system 若是物镜与筒镜之间的位置关系形成物方远心架构,通常是在系统光阑位于距离物镜主平面焦距上情况下出现,例如下图的ZEMAX建模: 只看主光线(见下图),我们可以发现这种配置下,物方的主光线角度恒等于零( CRA=0),像方存在 CRA\ne0 。该架构下的显微镜在景深内观...
An object space telecentric lens in which the chief ray is completely parallel to the optical axis in the object space. Note that the field of view does not change no matter where the object plane is, because the chief ray that defines the field of view is perfectly parallel to the optica...
The simplest way to make a lens telecentric is to put the aperture stop at one of the lens's focal points. An entrance pupil at infinity makes the lens object-space telecentric. Such lenses are used in machine vision systems because image magnification is independent of the object's distance...
Standard telecentric lenses accept ray cones whose axis is parallel to the main optical axis; if the lens is only telecentric in object space, ray cones passing through the optical system reach the detector from different angles depending upon the field position. Moreover the optical wavefront is...
In terms of principal rays, having a pupil at infinity means that the principal rays are parallel to the optical axis (a) in object space, if the entrance pupil is at infinity, or (b) in image space, if the exit pupil is at infinitum. Since light can propagate through a lens system...
Besides enhancing the natural field depth as per the lens aperture and magnification factor, Opto Engineering® lenses bitelecentricity makes these optics true telecentric: no magnification change occurs when the object is moved from its nominal working distance as the ray slope in image space remain...
According to the third order aberration theory of binary optical element,the optical coupler system with one diffractive surface,telecentric optical path structure in the object space is shown with calculation and optimization of optical design software ZEMAX,whose operating wavelength is(0. 该耦接器采...
A polar orthogonal polarization pattern is relayed conjugate to a pupil of a telecentric imaging system to avoid birefringence of axisymmetric birefringent optics located in telecentric object or image space.收藏 引用 批量引用 报错 分享 文库来源 其他来源 求助全文 DEEP UV TELECENTRIC IMAGING SYSTEM ...