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4718753 |
Telescope with correcting lens
The present invention provides in one embodiment a Newtonian type reflecting telescope, preferably using a primary parabolic reflecting mirror, in which a meniscus lens is used to simultaneously...
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4632547 |
Autocollimating alignment telescope
An autocollimating alignment telescope automatically turns a lamp on in the autocollimating operational mode, and automatically turns the lamp off in the alignment telescope operational mode. The...
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4600265 |
Infra-red optical systems
An `eye-piece` system for a non-Galilean afocal infra-red telescope designed to contribute to astigmatism correction, pupil match, and true afocality without undue increase in objective aperture...
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4577347 |
Direct view helmet mounted telescope
An improved helmet is provided including an optical system whereby the wearer may telescopically acquire an image of a field of view, which comprises a telescope retractably mounted to the helmet...
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4571036 |
Reflecting telescope with correcting lens
A reflecting telescope is provided in which a meniscus lens corrects for coma of the primary parabolic reflecting mirror, and also for coma and spherical aberration of an eyepiece, when an eyepiece...
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4545655 |
Optical viewing system
An elongated optical system for use as a camera viewfinder. The system comprises four lens groups and four mirrors arranged around the second group to fold the system optical axis and provide for...
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4542963 |
Optical system with reflective baffles
Baffles (34) in infrared telescope (10) extend circumferentially around tube (12) of the telescope. Each of the baffles (34) has a concave, rearwardly facing curved surface (36) and a frontwardly...
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4486079 |
Collapsible telescope
A collapsible telescope is disclosed which comprises a cylindrically-shaped main body of a quadrangular cross section defined by two long side walls and two short side walls and having folding...
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4453224 |
Orbiting objective lens telescope system and method
A large objective lens is placed in a highly eccentric orbit about the earth. The orbit and orientation of the lens are carefully chosen so that it focuses light or other radiation from a...
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4432596 |
Infra-red optical systems
An "eye-piece" system for an infra-red afocal telescope comprises a back element of positive power having a convex front surface and a curved back surface, and a pair of elements closely spaced to...
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4400065 |
Multi-purpose telescope
A multi-purpose telescope objective having a Petzval type lens configuration and including an iris diaphragm.
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4354733 |
Rearview device incorporable in helmets
A rearview device for a helmet or the like, comprising an optical system mountable on said helmet and including an objective lens which, in use, is directed rearwardly of the wearer of the helmet...
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4322131 |
Image transfer device using mirror moving on spherical focal surface
An apparatus for transferring a portion of an image from the spherical focal surface of a telescope to a fixed viewing area. A spherical parallelogram type linkage has means for selectively...
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4279463 |
Combination sun-moon filter
A combination sun-moon filter employs a first filter that is mounted at the front of the telescope and a second that is mounted in the telescope near the eyepiece. Each filter transmits...
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4266848 |
Optical system for night-vision glasses
An optical system for night-vision glasses having a long focal length and a large image angle including an objective having a structural length less than 1.6f and an aperture ratio larger than 1.2,...
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4239327 |
Opaque perforated filter
A light intensity filter for a telescope or other optical instrument viewed by the human eye is formed of an opaque material having a plurality of holes or windows. These windows transmit a reduced...
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4235507 |
Optical system to condense light from a semiconductor laser into a circular spot
An optical system has an objective lens for focussing on a dotted information carrying video disc the light emitted from a light source of semiconductor laser whose radiant region has different...
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4230902 |
Modular laser printing system
A laser printing system having a plurality of modules is provided wherein one of the modules comprises a laser, modulator and part of the system optics, the light output from the module being...
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4196967 |
Optical system with masking means and method for producing it
In an optical system including a transparent optical body such as a lens and a light reflecting surface disposed in the rear of the transparent optical body with a spacer of a light absorptive...
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4027943 |
Solar prominence adapter
A solar prominence adapter comprises a tubular housing having a first end adapted for connection with the eyepiece holder of a conventional reflecting or refracting telescope and the other end for...
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3990778 |
Optical viewing system for high pressure environments
A fiber optic system for permitting viewing of any of a plurality of selectable remote scenes in hostile environments by direct image transmission to the observer outside of the environment of the...
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3984845 |
Projecting optical system for photodrawing machine
An optical system of a photodrawing machine for photo-copying apertures onto light sensitive material minimizes undesirable effects of variations in projecting magnification and in illumination of...
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3658419 |
DEVICE TO FACILITATE THE FOCUSING OF A DISTANCE METER
The present invention relates to a device for facilitating the focusing of a distance meter in which the object is accurately imaged by a lens, and the distance sought is determined by measuring...
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3657549 |
TWO-COLOR HORIZON SENSOR
A radiant energy sensor which may be employed to detect discrete radiant energy wavelength bands from a selected portion of a radiating body such as the horizon. As radiant energy from various...
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3599112 |
LASER HAVING A TELESCOPIC SYSTEM RELATED TO THE OUTPUT REFLECTOR TO KEEP THE DIRECTION OF THE OUTPUT BEAM CONSTANT
Apparatus for generating a laser beam in a constant spatial direction by a laser tube between a spherical resonator reflector and a spherical semipermeable tune-out reflector, includes a telescopic...
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3484148 |
TELESCOPIC SIGHT WITH SERPENTINE SPRING PIVOT MEANS
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3195404 |
Anamorphosing optical system
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3152212 |
Optical system for telescope
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3064532 |
High speed optical system for telescopes
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3051047 |
Device for the suspension of a telescope on a vehicle
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3051050 |
Binocular lens system
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