This paper offers a novel algorithm to better design LEDs arrays for illumination systems. First, the illuminance distribution of LED arrays is studied through theoretical analysis. Second, we present the algorithm criterion and steps. And finally, we use computer to simulate and verify this method. The results show that the illumination uniformity is significantly affected by the spacing of ea...

The effect of optical illumination on DC and dynamic performance of Si1-xGex based double drift region (DDR) (p+pnn+) IMPATT diode operating at W-Band is investigated and compared with its Silicon counterpart. Top Mounted (TM) and Flip Chip (FC) structures are chosen and the composition of photocurrent is altered by shining light on the p+ side and n+ side of the device through optical windows....

To achieve super-resolution imaging, the information in higher frequency of observed sample is collected by illuminating with a structure beam for limited optical transfer function. In this paper, tilt illumination mode introduced to structured microscopy (SIM) enhancing lateral resolution. More spectrum more than traditional SIM, can be obtained detector. Thus, SIM improved at aspect imaging

Background and Aims: Fresh Frozen Plasma (FFP) is one of blood components. The risk of transmission of viruses from blood components regardless selection of blood donors and screening donated blood still remains. There are several methods for viral inactivation. In this study methylene blue (MB) photo inactivation process was used for inactivating viruses. Materials and Methods: In this study M...

Mutual illumination occurs when light reflected from one surface impinges on a second one. The resulting additional illumination incident on the second surface affects both the color and intensity of the light reflected from it. As a consequence, the image of a surface in the presence of mutual illumination differs from what it otherwise would have been in the absence of mutual illumination. Un...

The paper presents the relative stability behavior of the GaAs MESFET under varied illumination and frequency. The model of the device is developed in MATLAB and explains the shifts in the pole positions of transfer function with illumination and frequency for the first time. The variations of minority carrier life time and signal to noise ratio various optical illuminations under different fre...

the intensity of noise, heat and light were measured in 10 different groups of food processing plants with 3820 employees. noise was measured in 265 working places and if the over-all noise was more than t.l.v. (90dba), the octave band analysis was carried out. effective temperature (e.t) or corrected effective temperature (c.e.t) were measured in 183 working places and air velocity relative hu...

In video telephone scenes to be transmitted at low data rates, non–diffuse illumination has to be expected. Therefore, in this work the scene illumination is automatically estimated from a monocular image sequence in addition to shape and motion of moving objects. Image analysis uses the source model ”moving rigid 3D objects with nonuniform local illumination”. The irradiance is modelled by a d...