An optically routed gate array(OPGA) is used to implement a simple game of TIC TAC TOE to demonstrate the utility of electrooptical circuits which embody user input, display and logic functions in a single device. Pro...
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ISBN:
(纸本)0819422517
An optically routed gate array(OPGA) is used to implement a simple game of TIC TAC TOE to demonstrate the utility of electrooptical circuits which embody user input, display and logic functions in a single device. Progress on routing techniques layout and logic simulation will be presented.
This paper provides a set of polarization aberration fields that are useful for understanding polarization aberrations in optical imaging systems. The aberration function of a plane symmetric system is used to build t...
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ISBN:
(纸本)9780819496911
This paper provides a set of polarization aberration fields that are useful for understanding polarization aberrations in optical imaging systems. The aberration function of a plane symmetric system is used to build the polarization fields. Polarization aberration coefficients for a system of spherical surfaces are also given.
Many fundamental astronomical problems need much higher resolution than is afforded by atmospheric visibility or the diffraction limit of even the largest telescope being planned. The only way to meet these demands is...
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ISBN:
(纸本)0819403954
Many fundamental astronomical problems need much higher resolution than is afforded by atmospheric visibility or the diffraction limit of even the largest telescope being planned. The only way to meet these demands is by a distributed array of telescopes similar to those used in radio astronomy, or the long baseline stellar interferometry. China is planning to build a small-aperture long- baseline stellar optical interferometer for three purposes. One purpose is to clear up some problems before building a large and expensive interferometer. The second is to measure angular diameters of stars and angular distances between double stars. The third is to modify it for astrometry use in the future. In this paper, the design tolerance and specifications of the interferometer are discussed based on the astronomical requirements.
Freeform optical shapes or optical surfaces that arc designed with non-symmetric features arc gaining popularity with lens designers and optical system integrators. Tolerances on a freeform opticaldesign influence th...
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ISBN:
(纸本)9781628417449
Freeform optical shapes or optical surfaces that arc designed with non-symmetric features arc gaining popularity with lens designers and optical system integrators. Tolerances on a freeform opticaldesign influence the optical fabrication process. Case studies and soft tolerance limits for easier fabrication will be discussed. This paper will also give a high level overview of a freeform optical fabrication process that includes generation. high speed VIBE polishing, sub-aperture figure correction and testing of freeform surfaces.
A new method for correcting comatic aberration in holographic opticalsystems which uses constant optical path(COP) has been developed. The sum ofthe optical path lengths from an object wavefront to an image wavefront ...
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ISBN:
(纸本)0819403954
A new method for correcting comatic aberration in holographic optical
systems which uses constant optical path(COP) has been developed. The sum of
the optical path lengths from an object wavefront to an image wavefront remains
constant, and achromatic holographic systems can be easily calculated. Using COP,
a new focusing triplet was designed with wavelength tolerance of 9 nm for
entrance and exit numerical apertures of 0.5. This is 15 times larger than that
for conventional single holographic lens.
The optical system of an optical rotary encoder is presented. The requirements of the optics system are given and their effects on opticaldesign decisions are discussed, Steps taken to insure stable operation over a ...
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ISBN:
(纸本)0819422517
The optical system of an optical rotary encoder is presented. The requirements of the optics system are given and their effects on opticaldesign decisions are discussed, Steps taken to insure stable operation over a -40 degrees C to +85 degrees C temperature range are presented. designing for manufacturing toleraces is discussed. A novel application of a fiber illuminator LED as a short-distance collimated source is shown to be an acceptable low-cost alternative to a laser diode. The importance of effective plastic element employment in low-cost, mass-production optical systems is demonstrated.
design of mechanical features such as spacers, retainers and/or cell shoulders used to locate and constrain lens components within a mount entails application of geometric relationships that depend upon the types of g...
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The design of a wide field-of-view head-mounted display (HMD) is very challenging. Unfortunately, traditional design methods produce low-resolution imagery that is unacceptable for some tasks. One method of addressing...
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ISBN:
(纸本)0819432652
The design of a wide field-of-view head-mounted display (HMD) is very challenging. Unfortunately, traditional design methods produce low-resolution imagery that is unacceptable for some tasks. One method of addressing this challenge is to optically tile several smaller field-of-view displays to form a single, wide field-of-view, high-resolution image. This paper will address design issues specific to optically tiled systems including optical performance, seam placement and binocular rivalry.
Some results obtained in the realization of compact relay systems design are presented. Four optical configurations have been analyzed. Two symmetrical schemes were examined having field Smith's lenses for a image...
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ISBN:
(纸本)0819432652
Some results obtained in the realization of compact relay systems design are presented. Four optical configurations have been analyzed. Two symmetrical schemes were examined having field Smith's lenses for a image scaling of-ix. The achieved numerical aperture is up to 0.35 and the MTFs curves are at 40 cycles1/mm for a contrast ratio of 0.2. The third design has a large field of 40 mm but its F-number is about F/4.5. The last relay system is unsymmetrical. The scaling is 2x and the image field exceeds 50 mm. The aberration balancing results and the optical systems performance are illustrated.
Using the concept of matrix theory for lens design, a triplet lens can be replaced by a singlet lens which has an equivalent system matrix without changing its optical performance. Then, using third order Siedel's...
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ISBN:
(纸本)081941249X
Using the concept of matrix theory for lens design, a triplet lens can be replaced by a singlet lens which has an equivalent system matrix without changing its optical performance. Then, using third order Siedel's first aberration coefficient of the singlet lens is equal to zero, and the focal length and the physical length of the triplet lens are kept constant as constraints, an algebraic technique for optimizing a triplet lens is derived. Results show that this new optimizing technique is more effective than other conventional techniques for optimizing a triplet lens in the case of plane waves.
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