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6807022 |
Simultaneously achieving circular symmetry and diminishing effects of optical defects and deviations during real time use of optical devices
A method for simultaneously achieving circular and diminishing effects of optical defects and deviations during real time use of optical devices, and, a corresponding device and system for...
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6731659 |
Frequency locker
A frequency locker ( 100 ) for working with external light sources or frequency locked light sources ( 200, 300, 400 ) having integrated laser light sources ( 214, 414 ). The locker ( 100 )...
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5982475 |
Raster-scan photolithographic reduction system
A reduction photolithographic scanning system uses a reduction lens with a circular image field that is shaped to an irregular hexagonal configuration affording different effective scanning widths...
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5488514 |
Method of mounting an optical element
A mounting seat for an optical element is decoupled from a surrounding annulus that fixes the mount in place in an optical system. The annulus can be one of a plurality of annuli that are...
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5450143 |
Surgical optometer
There are disclosed an improved method and apparatus which derive the optical characteristics of a lens system from a plurality of measurement beams and can display the same. Included is an imaging...
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5428482 |
Decoupled mount for optical element and stacked annuli assembly
A mounting seat for an optical element is decoupled from a surrounding annulus that fixes the mount in place in an optical system. The annulus can be one of a plurality of annuli that are...
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5315111 |
Method and apparatus for laser beam drift compensation
A method and apparatus for laser beam drift compensation. A portion of the laser beam is split off and focused onto a photocell through a reticle. As the laser beam scans the reticle, the actual...
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5298096 |
Method of producing a lens
A method of producing a high-precision lens system, such as a stepper lens, involves the following steps: (a) attaching a metal frame to the radial periphery of each of a plurality of lens elements...
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5206672 |
Surgical optometer
There are disclosed an improved method and apparatus which derive the optical characteristics of a lens system from a plurality of measurement beams and can display the same. Included is an imaging...
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5033856 |
Three-dimensional shape measuring apparatus
A three-dimensional shape measuring apparatus having a high performance and a reduced drive energy is disclosed. At least a portion of an in-focus state detection optical system having an internal...
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EP0121714A2 |
Automatic wavelength calibration correction system.
A system for maintaining the wavelength scale calibration of diffraction grating based spectrometers and monochromators is disclosed. The system utilizes the approximately fixed angular...
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4199816 |
Optical calibration apparatus and procedure
A process and apparatus for the calibration of an optical instrument. An optical instrument--such as a lens meter or ophthalmometer--is provided with a light source, a light detector, and an...
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