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Sealed Crustless Sandwich

A sealed crustless sandwich for providing a convenient sandwich without an outer crust which can be stored for long periods of time without a central filling from leaking outwardly.

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Class 359/369 - With viewed screen


Subclass of Class 359 - Optical: systems and elements
Definition: Subject matter including structure for displaying a real
No. of patents: 97
Last issue date: 06/28/2011


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NumberTitleIssue Date
4818084Single eyepiece binocular microscope
A single eyepiece binocular microscope includes a microscope housing a generally horizontal base and housing several optical elements. An objective lens is positioned immediately above the specimen and adjacent the base plane. A first mirror, vertically a...
04/04/1989
4786154Enhanced-image operating microscope
An improved operating microscope includes a beamsplitter for splitting a portion of the visible image of the object, and an image enhancement device for performing image enhancement techniques on the split portion of the visible image. The enhanced visibl...
11/22/1988
4634240Optical apparatus using polarized light
An optical apparatus includes an illumination system for illuminating an object with a polarized beam in the desired state of polarization and an imaging system having a polarizing plate adapted to select a desired state of polarization of the beam and a ...
01/06/1987
4621913Microscope with projector
A microscope with a projector, comprising in combination: a mirror guiding skylight into the microscope; a lamp as a light source to emit light directly through said reflector into the microscope; a body tube having a fixed reflector and a rotatable mirro...
11/11/1986
4594608TV-photography system for surgical microscope
A TV-photography system for a surgical microscope, said system being constructed in such a manner that an optical path, which extends from an objective lens to an eyepiece, is divided by a beam splitter and an imaging adapter equipped with a shiftable bui...
06/10/1986
4577940Moire microscope
A moire microscope comprises an objective lens, a collimating lens, and a pair of spaced-apart gratings arrayed along an optic axis and adapted for providing a magnified moire deflectogram of a phase object. The microscope provides a simple apparatus for ...
03/25/1986
4518221Image conductors with a reticulated screen
An image conducting device is provided using an index gradient optical fiber on the input of which is projected a screened image, reduced by means of the lens-screen-reducer assembly, the image transmitted on to the output face of said fiber being seen th...
05/21/1985
4444475Microscope with projector
A microscope having a projecting device which is adapted to be used together with a reflecting mirror as a reflecting light source and a lamp disposed on the backside of the mirror as a direct light source characterized by that a hood is arranged instead ...
04/24/1984
4330169Device and method for aiding vision
A microscope with a flexible fiber-optic bundle used as a scanner is provided to assist the vision of people; particularly to enable persons with vision defects to read. The eyepiece of the microscope spreads the enlarged images onto the functional portio...
05/18/1982
4256363Speckle suppression of holographic microscopy
An apparatus for, and a method of, reconstructing and viewing a speckled holographic image through a microscope, with the result that the speckle of the holographic image is significantly reduced, without loss of resolution of the image. A finely-structur...
03/17/1981
4206966Projection microscope with film holder
A projection microscope is provided in which light from a light source in the base of the microscope may be directed either up through a specimen mounted on a stage to provide transmitted lighting or obliquely downwardly onto the specimen to provide surfa...
06/10/1980
4198571Scanning microscopes
A scanning microscope includes first and second focusing means arranged confocally, at least one focusing means being of annular form, (for example a lens and closely-spaced opaque screen having an annular aperture); coherent radiation detection means arr...
04/15/1980
4168106Pupil enlargement component for an optical device
A composite optical component for use in an improved optical system, for example, of the type in U.S. Pat. No. 4,012,109 includes opposed discs having surfaces in contact. The surfaces in contact are grooved with parallel grooves providing an undulating s...
09/18/1979
4115802Optical-electronic microscopy apparatus and process
An apparatus and process for microscopy produces two real images of a specimen using light-optical means. The images have different light qualities and are then amplified electronically and rendered visible as a single image following a difference image m...
09/19/1978
4101194Screen microscope with variable illumination
A screen microscope comprising a projection screen arranged on an arm of the microscope and a plural number of reflecting mirrors arranged in the arm and arranged to project an image of an object obtained by the microscope onto the screen through the refl...
07/18/1978
4099831High magnification optical apparatus with rotatable reflective lenticulated surface
The invention provides an optical device for use in microscopes and screen projectors comprising a screen formed with multiple lenticular surfaces mechanically traversed at a speed above persistence of vision in the light path between an object and an obs...
07/11/1978
4012109High magnification optical apparatus
The invention provides an optical device for use in microscopes and screen projectors comprising a screen formed with multiple lenticular surfaces mechanically traversed at a speed above persistence of vision in the light path between an object and an obs...
03/15/1977
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