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 ...
A measuring method for 3-D movement of particles using single-lens dual-camera system A 3-D measuring method for particle movement was established by using a single-lens dual-camera system. The light through an object-space telecentric lens ... M Jia,Z Wu,J Na,... - IEEE 被引量: 0...
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 ...
therefore significantly ease the data mapping of acquired 2D images to 3D images. Thus, in a preferred embodiment of the invention the optical system is substantially telecentric in the space of the probed object. The optical system may also be telecentric in the space of the pattern and camera...
PURPOSE:To constitute a titled device so that it is not influenced by interference of a thin film, by placing a telecentric optical system, and illuminating partially coherently a face corresponding to a pupil of this optical system. CONSTITUTION:An object to be detected 10 passes through a diap...
A perfect lens should have a phase transfer factor of 0 at all frequencies. In fact, PTF is close to 0 at low space frequencies, and increases at higher frequencies. Keywords and concept * 4. Spatial frequency It refers to the number of lines within a given length. The higher the ...
of an object strip, having a ray deflecting system situated at the site of the line image by which the line image is divided into adjacent image sections, in such a manner that paths of the rays pertaining to adjacent image sections are deflected into respective different directions in space....
As the OCT probe beam passes through the scan lens and is not affected by the illumination guide, the use of the illumination guide is optional. Removing the illumination guide can be convenient for accommodating applications with tight space constraints. The illumination tube on the OCT-LK5-BB...
resulting in a large structure with a footprint of about 1 m2. The extended path length between the components was considered to be necessary for having enough space in order to adapt the imaging system to different microscopy imaging tasks. In particular, imaging different objects with specific...
a telecentric f-theta lens positioned between the substrate and the scanning means such that the scanned beam maintains a predetermined angle with respect to the substrate surface as it scans across the surface, a series of optic fibers located at a plurality of angles to the substrate operative...