2 s -1 PAR - The University of Maine In
... Some ecological ‘behaviors’ associated with light: Phototropism is plant growth towards a light source. Photomorphogenesis is the light-induced control of plant growth and differentiation. Certain wave lengths function as a signal causing the generation of an information within the cell that is use ...
... Some ecological ‘behaviors’ associated with light: Phototropism is plant growth towards a light source. Photomorphogenesis is the light-induced control of plant growth and differentiation. Certain wave lengths function as a signal causing the generation of an information within the cell that is use ...
Modulation transfer function model of a Scophony infrared scene
... averaging would occur at 59 MHz. This MTF is essentially constant over the frequencies of interest. Using Eq. (14), we obtain MTFdet of 0.976 at 7 MHz. The amplifier electronics has a transfer function that constitutes another MTF component. The amplifier used was measured to have the transfer funct ...
... averaging would occur at 59 MHz. This MTF is essentially constant over the frequencies of interest. Using Eq. (14), we obtain MTFdet of 0.976 at 7 MHz. The amplifier electronics has a transfer function that constitutes another MTF component. The amplifier used was measured to have the transfer funct ...
Hyperfine Structure of Rubidium
... To measure hyperfine splitting of atomic energy levels in 87Rb. To become familiar with optical techniques To become familiar with Michelson interferometry and measurement calibration Safety The EOS laser which you will use in this experiment is a class IIIb laser with output in the mW range; the las ...
... To measure hyperfine splitting of atomic energy levels in 87Rb. To become familiar with optical techniques To become familiar with Michelson interferometry and measurement calibration Safety The EOS laser which you will use in this experiment is a class IIIb laser with output in the mW range; the las ...
FRESNEL LENSES BASED ON NANO SHELL
... uniform or non-uniform based on 1-D, 2-D or 3-D structures. The interactions between EM waves and periodical crystals using traditional Maxwell’s theory have been extended to the nano-scale for plasmonic structures [10–14]. The concept of EBG is a popular EM approach to analyze EM interactions with ...
... uniform or non-uniform based on 1-D, 2-D or 3-D structures. The interactions between EM waves and periodical crystals using traditional Maxwell’s theory have been extended to the nano-scale for plasmonic structures [10–14]. The concept of EBG is a popular EM approach to analyze EM interactions with ...
External visual interface for a Nikon 6D autocollimator
... processing package, built around Matlab environment. The whole system is used to analyze the reticle image to detect both the scale and the measuring crosshair lines at sub-pixel level. The system performance was compared in a controlled experiment against an electronic level with internationally tr ...
... processing package, built around Matlab environment. The whole system is used to analyze the reticle image to detect both the scale and the measuring crosshair lines at sub-pixel level. The system performance was compared in a controlled experiment against an electronic level with internationally tr ...
Optical Elements
... separator. Among the imaging lenses, the C-mount TV lens is most frequently used. Design, formats, and recommended mounting techniques are carefully explained. Physical idea of the telecentric lens—a very popular element in machine vision—is presented in succinct form with minimum mathematics, and t ...
... separator. Among the imaging lenses, the C-mount TV lens is most frequently used. Design, formats, and recommended mounting techniques are carefully explained. Physical idea of the telecentric lens—a very popular element in machine vision—is presented in succinct form with minimum mathematics, and t ...
Observational biases
... than the initial radius effect, but it affects mainly slow meteors. Transverse Radar ...
... than the initial radius effect, but it affects mainly slow meteors. Transverse Radar ...
Off-Axis Aperture Camera: 3D Shape Reconstruction
... each of these shapes we show the reconstruction results obtained by either changing the diameter A of the aperture (see Figures 2 and 3) or the distance C3 between the aperture and the lens (see Figures 5 and 6). In the experiments in Figures 2 and 3, we use 4 input images, which are obtained by set ...
... each of these shapes we show the reconstruction results obtained by either changing the diameter A of the aperture (see Figures 2 and 3) or the distance C3 between the aperture and the lens (see Figures 5 and 6). In the experiments in Figures 2 and 3, we use 4 input images, which are obtained by set ...
Full-Text - Radioengineering
... 300 mm) or 50 mm (for z = 300 to 500 mm) was employed in z-axis. Fig. 8 and Fig. 9 indicate results of the measured power distribution (E-plane) behind the dielectric lenses. To reach these distributions, 16 measuring scans had to be performed. The near-field area in our measurements was considered ...
... 300 mm) or 50 mm (for z = 300 to 500 mm) was employed in z-axis. Fig. 8 and Fig. 9 indicate results of the measured power distribution (E-plane) behind the dielectric lenses. To reach these distributions, 16 measuring scans had to be performed. The near-field area in our measurements was considered ...
Resolving the Vergence-Accommodation Conflict in Head Mounted
... display in relation to the exit static mono-focal lens according to the same principle, varying focal depth from 30 cm to 2 m (3.0 to 0.5D). All of the above-mentioned displays with mechanically-adjustable focus are large and cumbersome bench systems, and thus would require significant effort to be ...
... display in relation to the exit static mono-focal lens according to the same principle, varying focal depth from 30 cm to 2 m (3.0 to 0.5D). All of the above-mentioned displays with mechanically-adjustable focus are large and cumbersome bench systems, and thus would require significant effort to be ...
Modulation of spatial coherence of optical field by means of liquid
... liquid crystal placed between two polarizers (see, for example [8]). As has been shown in Ref. 9, depending on the mutual orientation of the main axes of polarizers, this modulator may produce to a good approximation either intensity-only or phase-only modulation of optical field. To demonstrate the ...
... liquid crystal placed between two polarizers (see, for example [8]). As has been shown in Ref. 9, depending on the mutual orientation of the main axes of polarizers, this modulator may produce to a good approximation either intensity-only or phase-only modulation of optical field. To demonstrate the ...
EE 5551
... used in fiber optic communications technology • Develop a general understanding of basic analog and digital signal sampling, transmission and receiving in communications • Understanding the origin of loss and causes of various dispersion in optical fibers • Understanding basic dielectric waveguides ...
... used in fiber optic communications technology • Develop a general understanding of basic analog and digital signal sampling, transmission and receiving in communications • Understanding the origin of loss and causes of various dispersion in optical fibers • Understanding basic dielectric waveguides ...
Schlieren Visualization
... or blowing into the test region with a compressed gas duster. Flames from matches or cigarette lighters work well too. At this point you may also want to practice recording single images and short movies with the camera while adjusting the frame rate and resolution. ...
... or blowing into the test region with a compressed gas duster. Flames from matches or cigarette lighters work well too. At this point you may also want to practice recording single images and short movies with the camera while adjusting the frame rate and resolution. ...
Diffraction-of-light
... Optical effects resulting from diffraction are produced through the interference of light waves. To visualize this, imagine light waves as water waves. If water waves contact a float on the water surface, the float would bounce up and down in response to the oncoming waves, thenproducing more waves ...
... Optical effects resulting from diffraction are produced through the interference of light waves. To visualize this, imagine light waves as water waves. If water waves contact a float on the water surface, the float would bounce up and down in response to the oncoming waves, thenproducing more waves ...
A New Analog Optical Processing Scheme for Solving NP
... natural way to speed up computations is based on the fact that computations do involve actually moving data from one location to another. To speed up computations, it is therefore reasonable to move data as fast as possible. According to modern physics, the fastest possible process is light. So, to ...
... natural way to speed up computations is based on the fact that computations do involve actually moving data from one location to another. To speed up computations, it is therefore reasonable to move data as fast as possible. According to modern physics, the fastest possible process is light. So, to ...
Noninterferometric single-shot quantitative phase
... (SLM) and a mirror (M2 ), respectively, at their Fourier planes. The SLM is a reflective liquid crystal phase-only panel (Holoeye Pluto, 1920 × 1080 pixels with 8 μm pixel size) and was configured to provide full 2π phase modulation with a linear electro-optical characteristic. To achieve simultaneo ...
... (SLM) and a mirror (M2 ), respectively, at their Fourier planes. The SLM is a reflective liquid crystal phase-only panel (Holoeye Pluto, 1920 × 1080 pixels with 8 μm pixel size) and was configured to provide full 2π phase modulation with a linear electro-optical characteristic. To achieve simultaneo ...
Orthogonal Frequency Division Multiplexing (OFDM) in Optical
... very hot topic [1-4]. There are two strategies for transmitting the quasi-analogue OFDM signal. One solution is given by optical I-Q-modulation in conjunction with coherent detection (CO-OFDM) [2, 3]. A second method restricts to a real OFDM signal transmitted with intensity modulation and direct de ...
... very hot topic [1-4]. There are two strategies for transmitting the quasi-analogue OFDM signal. One solution is given by optical I-Q-modulation in conjunction with coherent detection (CO-OFDM) [2, 3]. A second method restricts to a real OFDM signal transmitted with intensity modulation and direct de ...
A Distributed Pressure Sensing System to Prevent Bowel Perforations
... sensing system on the insertion tube of the colonoscope could alert an endoscopist when they are on the verge of causing a perforation. The scope of this project is to design and test a distrubted pressure sensor suitable for application on a colonoscope. Micro-bend optical sensors were chosen for t ...
... sensing system on the insertion tube of the colonoscope could alert an endoscopist when they are on the verge of causing a perforation. The scope of this project is to design and test a distrubted pressure sensor suitable for application on a colonoscope. Micro-bend optical sensors were chosen for t ...
Asphere Metrology
... An asphere can be tested in the same way as a sphere if the departure from spherical is mild enough that the fringes formed by the interferometer do not violate the Nyquist condition, which states each fringe must cover two or more pixels for the pattern to be accurately resolvable by the sensor. A ...
... An asphere can be tested in the same way as a sphere if the departure from spherical is mild enough that the fringes formed by the interferometer do not violate the Nyquist condition, which states each fringe must cover two or more pixels for the pattern to be accurately resolvable by the sensor. A ...