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...
The utility model relates to an object-space telecentric type chroma detecting lens which comprises a front lens set (1) and a rear lens set (2). The chroma detecting lens is characterized in that a diaphragm (3) is installed at the focus of the front lens set (1), and the input ...
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 remains unchanged.
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...
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...
Large-format telecentric lenses that eliminate the perspective error found in conventional lens systems are available from Edmund Optics Inc. The lenses can accommodate image sensors with diagonals up to 28.7 mm. They provide high-resolution, high-precision images with a large field of view, enabling...
1. The customer's use of scene space needs to consider the hardware length and other parameters of the industrial lens 2. The whole system is running in a moving or relatively stationary scene 3.Special requirements for spectral response; for ultraviolet environment, ordinary glass lens will attr...
while providing uniform screen illumination. The projection lens 400 also has a long back focal distance and is telecentric in object space, thereby enabling the use of projection lens 400 with a reflective light modulator 428 and a large prism assembly. In FIG. 4, the prism assembly includes ...
Object and Image Side Telecentricity This series of lenses are telecentric in both the object and image space, not just the object space as in the design of a normal telecentric lens. This design allows for telecentricity of less than 0.1% within the depth of field. CCD and CMOS sensors ...
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 infinity. In practical applications, a telecentric pupil ...