OBJECTIVE LENS OF MEDIUM POWERPURPOSE:To obtain a flat image and provide a high resolving power by using an optical system consisting of three combined lenses which satisfies the specific conditions with respect to the radii of curvature of the lenses, the thickness thereof, the interval ...
or two positive lenses, the fourth lens component is a negative meniscus lens with its convex surface positioned toward the object, and for which the number of lenses constituting the objective is small, the working distance is large, flatness of image is high and resolving power is also high...
The bias on the specimen is set near the mirror condition, and focusing by the objective lens was adjusted to obtain maximum contrast. The tilted bright lines represent magnetic bits recorded onto the hard disk before experimental viewing. The image in Figure 43b, showing the same area of the...
In order to demonstrate the optical storage application of tungsten phosphate glasses, the as-prepared WPG-Sb1 glass was irradiated by the focused 473 nm laser. The used power density of focused 473 nm laser is about 1915 kW cm−2, below the 2058 kW cm−2power density thr...
Recently, a scatter-plate microscope32, which uses the scatterer as a tunable objective lens of a microscope and can detect objects through scattering layers, has been demonstrated, but the reconstruction procedure has not shown 3D imaging capability. Similarly, another incoherent imaging technique33 ...
The recording laser lights in both the channels, which have passed through the light expander unit 44 are condensed by the objective lens 45 and subjects the photoresist 20 on the glass master 23 to the exposure. The exposure spots of both the channels are spaced apart by a minute distance ...
;CONSTITUTION: A modulating means 111 changing the amplitude or the phase of a collimated beam 104 by external control is provided between a collimator lens 102 and an objective lens 105. The modulating means 111 is mechanically or electrically driven. The modulating means 111 is also changed ...
A major objective in recording optical disc masters is to control the geometry of the pits used to record data on the disc. Poor pit geometry makes the separation of duplicate discs from the disc stampers difficult. Also, data transmission can be affected by pits having raised areas surrounding...
Optical pickup device having chromatic aberration correction lens An optical pickup device includes a light source to emit light, an objective lens to focus the light on a recording medium to form a light spot, an optical... TK Kim,YM Ahn,CS Chung,... 被引量: 0发表: 2005年 ...
摘要: Objective To determine whether intravenous contrast ultrasound examination is superior to gray-scale or power Doppler ultrasound for discrimination between benign and malignant adnexal masses with complex ultrasound morphology.DOI: 10.1002/uog.7464 年份: 2009 ...