Abstract: A wide field monocular is provided which is essentially a wide field virtual telescope. Two of these monoculars can be placed side-by-side to achieve a binocular with an extended monocular field. Also for such binoculars with objective lenses larger than the interocular separation, lunes can be cut from the objective lenses so that they can be placed adjacent each other, with the eyes essentially aligned with the optic axis of each telescope. This provides a remarkable wide field binocular with stereo vision and depth perception.

Abstract: An apparatus is provided for magnifying the image of distant objects which has the unique feature that, unlike the Galilean telescope, the magnification is largely determined by how far the eye is located from the apparatus. Furthermore, unlike the Loupe, objects to be viewed can be at any arbitrarily large distance from the apparatus. In addition, the apparatus does not require positioning of the eye at the exit pupil of the instrument; it does not require centering of the eye on the optic axis of the instrument; and it does not require refocusing for different object distances. Still, it provides erect, non-inverted images to the viewer. The includes a positive optical element defining an optic axis for the apparatus and having a positive focal length for converging an incoming bundle of rays of electromagnetic radiation.

Abstract: A mounting device with a clamp and pivotal holders provides mounting to a vehicular rear-view mirror for complementary devices such as a magnification scope or a radar detection device. Hand-held mounting is provided as well.

Abstract: This invention relates to Catadioptric Telescopes having concave spherical mirror reflectors as the primary objective and a refractive correction element for reducing the spherical aberration of the primary mirror, and more particularly to a fast, aberration-free flat field telescope employing a spherical primary mirror and unique sub-aperture sized corrector made preferably of one plano-concave lens element and one plano-convex element both of the same kind of glass. This unique corrector also simultaneously corrects aberrations of the primary including its field curvature. The telescope requires no aspherics and is capable of easy adaptation to a Newtonian style configuration.

Abstract: 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 correct for coma aberrations of both the primary reflector and of an eyepiece lens used for viewing the image, as well as for spherical aberration of the eyepiece. In some embodiments, the meniscus correcting lens is moveably mounted so that in one position it is used in connection with a viewing eyepiece, correcting the above-mentioned aberrations of primary reflector and eyepiece; while in a second position this same correcting lens is used with a lensless camera mounted on the telescope, in this case properly correcting the system only for the coma of the primary reflector. In all cases, the field of view, and magnification, of the telescope remains unchanged or only negligibly changed. In some additional embodiments, power is added to the meniscus lens to provide a new type of powered corrector.

Abstract: 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 is used. The meniscus lens may be formed from a plano-concave lens and a plano-convex lens positioned with their planar sides mutually parallel.

Abstract: 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 is used. The meniscus lens may be formed from a plano-concave lens and a plano-convex lens positioned with their planar sides mutually parallel.