We demonstrate that the light excitation and capturing efficiency of fluorescence based fiber-optical sensors can be significantly increased by using a CPC (Compound Parabolic Concentrator) tip instead of the standard plane-cut tip. We use Zemax modelling to find the optimum CPC tip profile and fiber length of a polymer optical fiber diabetes sensor for continuous monitoring of glucose levels. ...

Image analysis in the presence of surface scatter due to residual optical fabrication errors is often perceived to be complicated, nonintuitive, and achieved only by computationally intensive nonsequential ray tracing with commercial optical analysis codes such as ASAP, Zemax, Code V, TracePro, or FRED. However, we show that surface scatter can be treated very similarly to conventional wavefron...

This paper puts forward a new design idea of single lens according to the principle of optical triangulation. The minitype laser triangle probe is designed on the basis of the common direct laser triangulation whose light path is improved. A beam splitter lens is introduced to the path,and the focusing lens and imaging lens are into one. The beam splitter lens, detector and focusing lens are co...

We present a spectral domain low-coherence interferometry (SD-LCI) method that is effective for applications in on-line surface inspection because it can obtain a surface profile in a single shot. It has an advantage over existing spectral interferometry techniques by using cylindrical lenses as the objective lenses in a Michelson interferometric configuration to enable the measurement of long ...

Combination of gyro north-finder, self-collimation photoelectric theodolite can be composed a ground rapid directional aiming system. In the paper, based on the CCD angle measurement technology, the self-collimation optical system is redesigned, focal length of the optical system is calculated, and the appropriate parameters are chosen. Optical conjugate design of the three light paths of light...

The light field display technology can reconstruct the virtual three-dimensional scene with high precision, providing users a highly immersive viewing experience without any auxiliary equipment. However, one of main challenges faced by this is narrow view (FOV). In paper, we present novel autostereoscopic utilizing Composite Lenticular Lens Array (CLLa) and Saddle (SLa). By time-division quadru...

The most effective treatment for cataracts is to remove the cloudy crystalline natural lens and implant an intraocular (IOL) in its place. These refractive provide same focusing as do lens. Two IOLs are designed analyzed this paper—these IOL made of (PMMA, Acrylic). quality retinal image compared with healthy eye, which based on (Liou-Brennan) eye model) LBEM). Polychromatic Point Spread Functi...

We describe a new approach for locating the focal position in laser micromachining. This approach is based on a feedback system that uses a charge-coupled device (CCD) camera, a beam splitter, and a mirror to focus a laser beam on the surface of a work piece. We tested the proposed method for locating the focal position by using Zemax simulations, as well as physically carrying out drilling pro...

A novel lens-array based illumination design for a compact co-registered photoacoustic/ultrasound transvaginal probe has been demonstrated. The lens array consists of four cylindrical lenses that couple the laser beams into four 1-mm-core multi-mode optical fibers with optical coupling efficiency of ~87%. The feasibility of our lens array was investigated by simulating the lenses and laser beam...