1. Which of the following statement are true about "LED life" term?
... “cone” of acceptance of a ray enters the fiber proportional with Sin of the largest angle of a ray enters that will be captured and propagate as a bound mode proportional with Cos of the critical angle of a ray enters that will be captured and propagate as a bound mode A measure related to the refra ...
... “cone” of acceptance of a ray enters the fiber proportional with Sin of the largest angle of a ray enters that will be captured and propagate as a bound mode proportional with Cos of the critical angle of a ray enters that will be captured and propagate as a bound mode A measure related to the refra ...
the measurement of the speed of the light
... f1, f2 -original and shifted face position respectively F1, F2-original and shifted focal points L- lens ...
... f1, f2 -original and shifted face position respectively F1, F2-original and shifted focal points L- lens ...
- Free Documents
... the shorter its wavelength c / f c .Wavelength Vs Frequency The higher the frequency of the signal. m/s The standard unit of frequency is Hertz If a wave completes one cycle per second.. then f Hz THz cycles per second . Optical Concepts . ...
... the shorter its wavelength c / f c .Wavelength Vs Frequency The higher the frequency of the signal. m/s The standard unit of frequency is Hertz If a wave completes one cycle per second.. then f Hz THz cycles per second . Optical Concepts . ...
Interference2
... Now move the lens towards eyepiece and bring it to other positon L2 So that again images of A and B are seen clearly in the the field of view Of eyepiece. Again if the distance between the two images be d2 ...
... Now move the lens towards eyepiece and bring it to other positon L2 So that again images of A and B are seen clearly in the the field of view Of eyepiece. Again if the distance between the two images be d2 ...
4.3 Wave characteristics
... light incident on water (η = 1.33) tanθB = n2/n1 = 1.33/1 = 1.33 θB = 53.1º You don’t need to know or use this formula! ...
... light incident on water (η = 1.33) tanθB = n2/n1 = 1.33/1 = 1.33 θB = 53.1º You don’t need to know or use this formula! ...
Get PDF - OSA Publishing
... (paleoecology),14 the monitoring of pollution15 or environmental changes. In many of these applications it is important to have precise estimates of cell volume. This allows the calculation of the biomass with the help of an appropriate conversion factor.16 The biovolume is usually achieved using si ...
... (paleoecology),14 the monitoring of pollution15 or environmental changes. In many of these applications it is important to have precise estimates of cell volume. This allows the calculation of the biomass with the help of an appropriate conversion factor.16 The biovolume is usually achieved using si ...
Opt001
... Introductory Preparation It’s probably been a while since you thought much about optics. The following background information is intended to help you revise your understanding of the properties of light before embarking on the Optics experiments. Make sure that you discuss any points you do not und ...
... Introductory Preparation It’s probably been a while since you thought much about optics. The following background information is intended to help you revise your understanding of the properties of light before embarking on the Optics experiments. Make sure that you discuss any points you do not und ...
Full Paper
... frequency applied to the acoustic transducer and the resultant acoustic wave frequency as shown in equation 7.Increase in acoustic frequency will leads to decrease in centre transmission wavelength.The frequency and tuned wavelength are varying in inverse fashion but this relation is not exact becau ...
... frequency applied to the acoustic transducer and the resultant acoustic wave frequency as shown in equation 7.Increase in acoustic frequency will leads to decrease in centre transmission wavelength.The frequency and tuned wavelength are varying in inverse fashion but this relation is not exact becau ...
The optical microscopy with virtual image breaks
... "superlens''6, related to the enhancement of evanescent waves within a slab of artificial material with a negative refractive index. Through the resonant coupling of evanescence waves to surface plasmon polaritons (SPP) in silver, objects as small as 60 nm were successfully recorded in the UV spectr ...
... "superlens''6, related to the enhancement of evanescent waves within a slab of artificial material with a negative refractive index. Through the resonant coupling of evanescence waves to surface plasmon polaritons (SPP) in silver, objects as small as 60 nm were successfully recorded in the UV spectr ...
Associate Professor Shien
... used to compensate the fiber loss in a lightwave system. Optical amplifiers with wavelength division multiplexing (WDM) technologies can provide high speed and secure optical links that are immune to EM interference and that can transmit information to long distance without using electronic repeater ...
... used to compensate the fiber loss in a lightwave system. Optical amplifiers with wavelength division multiplexing (WDM) technologies can provide high speed and secure optical links that are immune to EM interference and that can transmit information to long distance without using electronic repeater ...
Practical No 6
... ATTENTION ! Laser radiation is dangerous for your eyes. Avoid any contact with the laser light! The laser light beam (electromagnetic wave of a frequency 2 MHz) generated by the source L is splitted into two beams, the first one is approaching the detector D1 situated near the source, whereas the se ...
... ATTENTION ! Laser radiation is dangerous for your eyes. Avoid any contact with the laser light! The laser light beam (electromagnetic wave of a frequency 2 MHz) generated by the source L is splitted into two beams, the first one is approaching the detector D1 situated near the source, whereas the se ...
From a flat mirror, designer light — Harvard School of Engineering
... Fellow in Electrical Engineering at SEAS. "Our discovery carries optics into new territory and opens the door to exciting developments in photonics technology." It has been recognized since ancient times that light travels at different speeds through different media. Reflection and refraction occur ...
... Fellow in Electrical Engineering at SEAS. "Our discovery carries optics into new territory and opens the door to exciting developments in photonics technology." It has been recognized since ancient times that light travels at different speeds through different media. Reflection and refraction occur ...
Chapter 24
... Due to the change of phase because of reflection, thin films can produce an interference pattern. Use rule that the wavelength in a medium of index of refraction, n, is: n = /n. Let ray 1 be reflected from the top surface of the film. Its phase changes by 1800. This is equivalent to a path differen ...
... Due to the change of phase because of reflection, thin films can produce an interference pattern. Use rule that the wavelength in a medium of index of refraction, n, is: n = /n. Let ray 1 be reflected from the top surface of the film. Its phase changes by 1800. This is equivalent to a path differen ...
Document
... Crown glass is produced from alkali-lime silicates containing approximately 10% potassium oxide. It has low n (≈1.52) and low despersion (with Abbe Number around 60). Generally, this is any glass with Abbe numbers in the range 50 to 85. For example, the borosilicate gall Schott BK7 is an extremely c ...
... Crown glass is produced from alkali-lime silicates containing approximately 10% potassium oxide. It has low n (≈1.52) and low despersion (with Abbe Number around 60). Generally, this is any glass with Abbe numbers in the range 50 to 85. For example, the borosilicate gall Schott BK7 is an extremely c ...
Optogenetic Neuromodulation
... to illuminate a sufficient area? Yaroslavsky et al. investigated the optical properties of various human brain tissue (from an autopsy) including the thalamus, pons, white and gray brain matter, and the cerebellum [10]. Using slices 80um to 200um thick and a spot diameter of 2mm, absorption and scat ...
... to illuminate a sufficient area? Yaroslavsky et al. investigated the optical properties of various human brain tissue (from an autopsy) including the thalamus, pons, white and gray brain matter, and the cerebellum [10]. Using slices 80um to 200um thick and a spot diameter of 2mm, absorption and scat ...
Optical forces and torques in non-uniform beams of
... Both are proportional to the helicity of the incident beam, σ0 . They do not, however, contribute equally to the transverse component of the radiation pressure. At the focus of the circularly-polarized optical tweezer, for example, 79% of the transverse momentum density is due to the spin-curl term ...
... Both are proportional to the helicity of the incident beam, σ0 . They do not, however, contribute equally to the transverse component of the radiation pressure. At the focus of the circularly-polarized optical tweezer, for example, 79% of the transverse momentum density is due to the spin-curl term ...
Optical forces and torques in non
... Both are proportional to the helicity of the incident beam, σ0 . They do not, however, contribute equally to the transverse component of the radiation pressure. At the focus of the circularly-polarized optical tweezer, for example, 79% of the transverse momentum density is due to the spin-curl term ...
... Both are proportional to the helicity of the incident beam, σ0 . They do not, however, contribute equally to the transverse component of the radiation pressure. At the focus of the circularly-polarized optical tweezer, for example, 79% of the transverse momentum density is due to the spin-curl term ...
Three-dimensional imaging by optical sectioning in the aberration
... by eye as the sharpest image or by some other criterion such as the presence of strong spots in the power spectrum arising from lattice fringes in the image. For the data presented here, the image judged to have most of the particles in or near focus was selected. Nearest neighbour cross correlation ...
... by eye as the sharpest image or by some other criterion such as the presence of strong spots in the power spectrum arising from lattice fringes in the image. For the data presented here, the image judged to have most of the particles in or near focus was selected. Nearest neighbour cross correlation ...
Geometric optics
... partially refracted at the boundary surface, and partially reflected. However, if the angle of incidence is greater (i.e. the direction of propagation or ray is closer to being parallel to the boundary) than the critical angle – the angle of incidence at which light is refracted such that it travels ...
... partially refracted at the boundary surface, and partially reflected. However, if the angle of incidence is greater (i.e. the direction of propagation or ray is closer to being parallel to the boundary) than the critical angle – the angle of incidence at which light is refracted such that it travels ...
Optical System design
... to yield good results. Transmission analysis: WinLens contains tools for key engineering tasks – not classical lens design – but which do impact critically on the overall performance of a lens. Transmission calculations take bulk absorption in the glasses and coatings applied to the surfaces into ac ...
... to yield good results. Transmission analysis: WinLens contains tools for key engineering tasks – not classical lens design – but which do impact critically on the overall performance of a lens. Transmission calculations take bulk absorption in the glasses and coatings applied to the surfaces into ac ...
1076
... out most nearly equally in all directions in the hemisphere beyond the wall. (a) The sound of a low whistle at 1 kHz passes through a doorway 1 m wide. (b) Red light passes through the pupil of your eye. (c) Blue light passes through the pupil of your eye. (d) The wave broadcast by an AM radio stat ...
... out most nearly equally in all directions in the hemisphere beyond the wall. (a) The sound of a low whistle at 1 kHz passes through a doorway 1 m wide. (b) Red light passes through the pupil of your eye. (c) Blue light passes through the pupil of your eye. (d) The wave broadcast by an AM radio stat ...
Lab 11 - Optical Ray Tracing
... Ray tracing is a way of generating optical path in a system based on the laws of geometric optics. By successively applying the laws of reflection and refraction on the optical surface (lens, mirror, screen, iris, etc.), a light ray can be propagated from the source to they target and thereby genera ...
... Ray tracing is a way of generating optical path in a system based on the laws of geometric optics. By successively applying the laws of reflection and refraction on the optical surface (lens, mirror, screen, iris, etc.), a light ray can be propagated from the source to they target and thereby genera ...
Electro-Optic Ceramics
... refractive index as a function of an externally applied electric field. In unisotropic materials the index of refraction depends on the direction of propagation and the direction of polarization of the light. This means that the two components of light polarization can propagate at a different speed ...
... refractive index as a function of an externally applied electric field. In unisotropic materials the index of refraction depends on the direction of propagation and the direction of polarization of the light. This means that the two components of light polarization can propagate at a different speed ...
Motion and Optical Flow
... – Matching algorithms – Based on correlation or features – Sparse correspondence estimates – Most common with multiple cameras / stereo ...
... – Matching algorithms – Based on correlation or features – Sparse correspondence estimates – Most common with multiple cameras / stereo ...
Slide 1
... therefore its color, depends on the band gap energy of the materials forming the p-n junction. In silicon or germanium diodes, the electrons and holes recombine by a nonradiative transition which produces no optical emission, because these are indirect band gap materials. The materials used for the ...
... therefore its color, depends on the band gap energy of the materials forming the p-n junction. In silicon or germanium diodes, the electrons and holes recombine by a nonradiative transition which produces no optical emission, because these are indirect band gap materials. The materials used for the ...
Optical coherence tomography
Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). Optical coherence tomography is based on low-coherence interferometry, typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy, another optical technique, typically penetrates less deeply into the sample but with higher resolution.Depending on the properties of the light source (superluminescent diodes, ultrashort pulsed lasers, and supercontinuum lasers have been employed), optical coherence tomography has achieved sub- micrometer resolution (with very wide-spectrum sources emitting over a ~100 nm wavelength range).Optical coherence tomography is one of a class of optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency-domain optical coherence tomography, provides advantages in signal-to-noise ratio, permitting faster signal acquisition. Commercially available optical coherence tomography systems are employed in diverse applications, including art conservation and diagnostic medicine, notably in ophthalmology and optometry where it can be used to obtain detailed images from within the retina. Recently it has also begun to be used in interventional cardiology to help diagnose coronary artery disease. It has also shown promise in dermatology to improve the diagnostic process.