1, An improved Fresnel waveguide lens is presented.

2, Fresnel diffraction pattern numerical Fresnel diffraction pattern numerical simulation!

3, Fresnel lens on the top.

4, Since then, the Fresnel lives of the new content.

5, A method of making the Fresnel lens is described.

6, Various loss factors which may occur when the Fresnel lens is used to improve the utilization of solar energy are analyzed experimentally.

7, The number of spectral switch increases with increasing Fresnel number and truncation parameter, but.

8, The equivalent Fresnel numbers of the regular polygon and slit are calculated by using the radius of inscribe circle and half width of the slit as the feature length.

9, The configuration, performance of the Fresnel zone plate and the diffraction experiment result of the zone plate to coherent light are presented.

10, Imaging characteristic of Fresnel lens for parallel incident rays is analyzed by ray tracing and experiments.

11, The third chapter discussed how to perform a fresnel lens with the principle of fresnel zone diffraction.

12, The . target is actually a rectangular Fresnel lens with the correct focal length so that an image of the light source is formed on the plane of the detector.

13, The 16-step Fresnel lens had been fabricated by thin film deposition and ion beam etching and it has been used in refractive-diffractive CCD camera.

14, The large aperture six components Fresnel optical lens design principle and overall manufacturing scheme are presented. Calculating and fabricating method for each spherical ring are reported.

15, The design method of a photoinduced plasma Fresnel zone plate antenna is described.

16, The new method for designing Fresnel lens has a wide serration breadth and unequal pitch.

17, Experimental results of electron interference and Fresnel diffraction observed on a transmission electron microscope using an electrostatic biprism as beam-splliter are reported.

18, Staring from Fresnel diffraction integral, we deduced the optical intensity distribution in the Fresnel zone of the diffraction field of the annular-aperture lens axicon.

19, Refinements in lenses (e. g. , the Fresnel lens) and reflectors made it possible to substantially increase the light's intensity.

20, In 1818 Fresnel entered a competition sponsored by French Academy.

21, Experiments on dynamic focusing control of the TN-LCSLM based on Fresnel zone lens are carried out.

22, A new method of fixing the fast axis and slow axis of 1/4 wave plate is presented. The Fresnel rhomb has the action of eliminating dispersion. So the problem of the limitation of ...

23, The results of computer simulation can provide theoretical basis for the fabrication of 16 - step Fresnel lens.

24, A refracting panel consisting of one or more, usually cylindrical,(http:///fresnel.html) fresnel lenses .

25, Compared with the parabolic reflector, a phase factor is of most importance in the efficiency evaluation of Fresnel zone phase-corrected plate(FZP) ones.

26, The characteristics of a solar concentrator is mainly presented. The structure, advantages and imaging features of a Fresnel lens are analyzed.

27, Numerical results demonstrate the advantages of super-Gaussian and serrated apertures in suppressing Fresnel diffraction modulations and maintaining relatively large fill factor.

28, Moire pattern caused by the cascade of periodic structures of LCD, Fresnel lens, and Lenticular lens, etc. is a key concern in designing a high quality LCD rear projection screen.

29, Numerical calculations are performed and show that the focal shift in focused sinhGaussian beams depends on the Fresnel number and decentered parameter, and increases with decreasing them.

30, Based on the theory of scalar diffraction and on the Fourier optics, a formula of the diffractive efficiency with alignment error for the 4 step Fresnel lens is obtained.

31, Two kinds of models are considered, spherical wave and plane wave, and the diameter of the receiving aperture is supposed as the first Fresnel zone length.

32, This paper presents a self focusing filter which is composed of matched filter with sine form and Fresnel zone plate by means of area coded method.

33, Fresnel lens optical landing system (FLOLS) is a typical optical landing system for contemporary aircraft carriers.

34, An approach to realize dynamic focusing in Optical Coherence Tomography ( OCT ) is proposed by using liquid crystal Fresnel zone lens.

35, The result indicates that fractional Fourier transform is the proper mathematic tools to Fresnel diffraction.

36, The patterns of two electrodes as the upper and lower substrates are accurately superposed on the Fresnel zone plate(FZP) in the refractive-diffractive hybrid focus-variable imaging system.

37, The contents as follow:1. Based on the actual parameter of laser direct writing system in our laboratory, designed a Fresnel lens.

38, The Fresnel integral can be computed on the basis of geometrical properties of Cornu spiral.

39, Some parameters, such as the diffraction aperture, the diffraction distance and phase levels of Kinoform, are discussed. They are key factors to the variable focal-length phase Fresnel lens.

40, It is shown that many properties of diffraction in the Fresnel region can be obtained.

41, In order to analyze a circular confocal resonator with a big Fresnel number, in this paper, we introduce a transfer matrix method to calculate and analyze the modes in a confocal resonator.

42, Fresnel Zone Plate ( FZP ) non - movable convolution scanning holography is based on the FZP scanning holography.

43, The one-dimensional Fresnel zone phase correcting principle can be applied in a cylindrical surface to constructed a new type of point source feeding lens antenna.

44, The Fresnel zone plate scanning holography is applied in the imaging through highly scattering media.

45, Four kinds of laser source are used to measure the diffractive efficiency of Fresnel lens.

46, Also, the corresponding arithmetical Methods : To evaluating imaging quality of rear projection fresnel screen is presented.

47, The imaging quality of curve Fresnel lens is better than plane one, because coma aberration was corrected.

48, Based on the total-reflection phase transformation theory, the Fresnel rhomb retarder is obtained with a structure angle with which the phase retardation is insensitive to the angle of incidence.

49, We study the beam paths in uniaxial crystal with arbitarily oriented optical axis in general conditions, by it′s plane and ellipsoid of refraction index and Fresnel law.

50, For the microscopy by off-axis lensless Fourier transform holography, Fresnel reconstructing method is better than the convolution method.

51, The difficulty was resolved by Fresnel with his addition of the concept of interference.

51, is a sentence dictionary, on which you can find good sentences for a large number of words.

52, A tutorial on making use of reflection, specular, index of refraction, fresnel, and fall-off to create gold, silver and copper material.

53, Fresnel zone phase correcting plate antenna is a new type of planar antenna which is used in high-power millimeter-wavelength radiation system.

54, This paper deals with two problems, nonzero -offset Fresnel zone in homogeneous media, and the effect of velocity error resulted in NMO correction and stacking on vertical resolution.

55, And point out the beams whose expression is the zeroth order Bessel function is not nondiffraction beams, but it is a kind of special Fresnel diffraction beams or interference.

56, The basic principle of this measurement comes from the Fresnel formula and Brewster ? ? s law.

57, In contrast to a Fresnel surface with double sheets, an indicatrix one is simple.

58, Fresnel zone lens suitable for dynamic focusing in OCT is designed based on optical characteristics of Twisted Nematic Liquid Crystal Spatial light Modulator (TN-LCSLM).

59, The wavelengths are determined usually by measuring the widths of interference fringes in many experiments such as Young's slits, Fresnel biprism, bimirror and Lloyd's mirror etc.

60, Fresnel lens system design was the first try and a commercial Fresnel lens was bought to analyse its model to use at the same time.

61, Augustin Fresnel " , " Nature is not embarrassed by difficulties of analysis. ", "

62, Experiments on dynamic focusing control of the TN-LCSLM based on Fresnel zone lens are carried out. Measured focal lengths are in good agreement with the designed ones.

63, We use the thin film deposition to make 16 step fresnel lens, which can obtains lightweight system, miniaturization and increases free degree of the design.

63, is a online sentence dictionary, on which you can find excellent sentences for a large number of words.

64, Because the stack considers different geometry of underground reflectors and is stack within the Fresnel zone, the method more approaches to real underground geologic situation.

65, And after employing UV light to cure the resin, the Fresnel lens collector on the PC substrate is fabricated. The Fresnel lens collector on PC substrate is tested in the sunshine.

66, The limitation of far region Fresnel - Kirchhoff formula in transient problem is dis - eussed.

67, In many cases, the Simpler Huygens - Fresnel treatment will prove quite adequate for our purpose.

68, The results consist with the theoretical calculation using the Fresnel - Kirchhoff's formula in considering incident Gaussian beam.

69, The optimum measuring position of virtual source in Fresnel double prism experiment is found by derivation.

70, The lens may take a variety of shapes, including Fresnel features, and may focus, collimate, or defocus the ultrasonic energy.

71, By using Fresnel diffraction, we get the imaging and pseudo-phase-conjugation properties of the optical array with large radius of curvature which is composed by many optical elements.

72, Theory of Fresnel scale diffraction and imaging rule of optical mode were used to investigate the resonator with internal lens and basic structures of equivalent resonator are introduced.

73, The first Fresnel zone radius can be treated as lateral resolving power of seismic data approximately.

74, The optical design and optical efficiency of line focus cylindrical Fresnel lens for solar concentrator are discussed.

75, We simulated the light exposure distribution of the mask and structure of the Fresnel lens in computer.

76, Diffractive efficiency of Fresnel lens is important factor to evaluate the quality of Fresnel lens.

77, The one dimensional Fresnel zone phase correcting principle can be applied to a cylindrical reflector to construct a new type of point source feeding reflector.

78, From the Fresnel diffraction equation, we calculated the intensity distribution of the FHB in free space, and found that there is an interested propagation property of the FHB before the focal plane.

79, The Fresnel diffraction formula and the Fourier transforms are used to get the intensity distribution formula.

80, At millimeter-wave band, Fresnel Zone Plate (FZP) antenna has the advantages of simple structure, planar configuration and low cost, while giving performance comparable to the parabolic antenna.

81, The results of computer simulation can provide theoretical basis for the fabrication of Fresnel lens.

82, Because of the real data does not obtain from normal incidence, hence, the radius formula of Fresnel zone for non-zero incidence angle was derived.

83, The Fresnel lens collector has much notable feature with ultra-thin, low cost, high condensing rate and easy-to-batch production. Also it can improve the distribution of light intensity heterogeneity.

84, Fresnel lens on the top. Thickness and quality of the glass are impressive.

85, The retardation of the Fresnel rhomb phase retarder was measured with the measurement error less than 0.3%.

86, The optimum distribution, which could let the EM wave focus inside the Fresnel zone, is given as well.