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| Number | Title | Issue Date |
| 7239456 | Super wide-angle lens system and image-capturing device using the same In order to provide a fast super wide-angle lens system having the f-number of f/2.8 and a wide angle of view of 2ω=100° or more in an imaging area of a digital camera and an image-capturing device equipped with the super wide-angle lens system. The lens system in... | 07/03/2007 |
| 7230756 | Integrated optical system for endoscopes and the like Optical systems for endoscopes, borescopes, dental scopes, and the like which are characterized by having three groups of lenses of positive optical power and an external entrance pupil. Typically, all three groups of lenses are displaced from the pupil and focal pl... | 06/12/2007 |
| 6950242 | Design and fabrication process for a lens system optically coupled to an image-capture device An optical system operable to transmit an energy flux is described. A first substantially spherical lens includes first and second substantially hemispherical portions joined at an interface. The interface includes a partially reflective material on a first substant... | 09/27/2005 |
| 6934089 | Objective lens system An objective lens system (2), particularly for a fingerprint reader apparatus, said lens system (2) comprising a first lens (8) formed as a condensing lens guiding light beams arriving from an object generally telecentrically, an aperture stop (... | 08/23/2005 |
| 6912095 | Projection lens system A compact and light-weighted projection lens system that is capable of projecting an image at an angle as wide as 75 degrees with sufficient field angle and brightness as represented by F number of approximately 2.4, that is capable of effectively correcting chroic ... | 06/28/2005 |
| 6844989 | Lens system installed in mobile communication terminal Disclosed is a lens system installed in a mobile communication terminal, comprising: a first lens including at least one aspherical plane and having a positive refractivity; a perforated iris separated from the first lens by a designated distance for preventing unne... | 01/18/2005 |
| 5861987 | Stereoscopic-vision endoscope offering a large angle of introversion and a necessary and sufficient sense of three-dimensionality A stereoscopic-vision endoscope of the present invention comprises a tubular elongated insertional part, an objective optical system situated in the insertional part, a relay optical system situated in the insertional part for transmitting an object image... | 01/19/1999 |
| 5272565 | Compact zoom lens system The invention provides a compact zoom lens system which has an angular coverage from wide angle to moderate telephoto and makes a relatively bright and parallax-free TTL finder possible and in which a first unit 11 having a positive power as a whole is lo... | 12/21/1993 |
| 4730909 | View direction changing optical system for endoscopes A view direction changing optical system provided with a first optical member having a first reflecting surface for bending downward the optical axis along the lengthwise direction of an endoscope and a second optical member arranged adjacently to the low... | 03/15/1988 |
| 4684224 | Field view direction changing optical system A field of view direction changing optical system comprising an incident face intersecting at right angles with the optical axis of the light from the observation field of view forming an angle θ with respect to an optical axis of an image transmitting o... | 08/04/1987 |
| 4669866 | Step-and-repeat alignment and exposure system and method therefore An improved step and repeat alignment and exposure system for printing an image of a reticle onto a semiconductive wafer. A projection lens, such as a unit magnification catadioptric lens, projects the reticle image onto the semiconductive wafer. Novel vi... | 06/02/1987 |
| 4655557 | Oblique viewing optical system for endoscopes An oblique viewing optical system for endoscopes wherein, in order to make it easy to work and assemble the component parts and to reduce the light amount loss, a visual field direction changing prism is formed of a first prism and second prism, the first... | 04/07/1987 |
| 4598980 | Objective optical system for endoscope An objective optical system for an endoscope comprises a retrofocus objective lens assembly consisting of a front-stage diverging lens unit, an aperture diaphragm, a rear-stage converging lens unit, and a prism positioned in this sequence, and a self-scan... | 07/08/1986 |
| 4385809 | Copying lens A copying lens system of three lenses is provided in which the total length is less than 0.15f with aberration fully corrected. This is brought about by a three-lens system in which the first lens is a positive meniscus whose convex surface faces the obje... | 05/31/1983 |
| 4042295 | Retrofocus-type objective for endoscopes A retrofocus-type objective for endoscopes comprising a front diverging lens group and rear converging lens group and arranged to be focused by keeping the front diverging lens group fixed and moving the rear converging lens group toward the front divergi... | 08/16/1977 |
