>The latest Nikon patents: 1 Nikkor 9-30mm f/1.8-2.8 ...
Nikon filed a patent in Japan for a fast zoom for Nikon 1 mirrorless cameras: 1 Nikkor 9-30mm f/1.8-2.8. Another interesting Nikon patent is for a "do-it-yourself" modular lens – you can pick the needed pieces from a pre-defined set and build your own Nikkor lens: Different lens combinations and attachment methods were described in the patent: The third […]
>US 6,074,280 A - Eyeglass lens grinding apparatus and a ...
Patent US6074280A - Eyeglass lens grinding apparatus and a method of grinding an eyeglass (US 6,074,280 A); Owner: Nidek Company Limited; Filed: 09/21/1998; Est. priority date: 09/24/1997; Status: Expired due to Term; Abstract: In an eyeglass lens grinding apparatus, a material and a process condition of an eyeglass lens to be processed is input.
>Lesson: OPHTHALMIC LENSES: THEN AND NOW
The first progressive lens design: "Although progressive addition lenses (or 'PALs') didn't enjoy commercial success until the 1960s, the concept has been around since Owen Aves, cofounder of London's Institute of Optometry, patented a progressive lens design in 1907. Because of the dual-surface nature of this lens design, it was ...
>Apple Suppliers LG InnoTek and Corning Share Patents on a ...
According to Kipris, a patent portal run by the Korean Intellectual Property Office, there were a total of 131 patents related to liquid lens in South Korea __ 85 of them were owned by LG InnoTek ...
>Sellstrom Welding Helmet, Flip Front Adaptor, Lift Front ...
Tefuawe Auto Darkening Welding Lens, True Color Blue Technology, Variable Shade 5-13, 2x4.25" with 2pcs Replacement Outside Cover Lens for Pipeliner Welding Hood 4.4 out of 5 stars 53 1 offer from $82.00
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>Chapter 8 The Telpe - William & Mary
spectacle maker, seeking a patent for a telpe. The patent was denied because of easy telpe duplication and difficulty in patent enforcement. The instrument spread rapidly. Galileo heard of it in the early 1600s and quickly made improvements in lens grinding that increased the magnification from a relatively low value of 2 to as much as 30.
>What Is Prism Thinning in Progressive Lenses?
During the grinding process, the manufacturer then can slightly tilt the rear lens surface and cuts off lens material in order to produce thinner lenses. Depending on your prescription your needed reading power and the length of the progressive lens you choose the manufacturer changes the amount of thinning prism for you to produce the ideal lens.
>Diamond/CBN Superabrasive
Optic lens, 3C electronic industry, semiconductor. Photovoltaic industry. PCD/PDC synthesis. ... Superabrasive Grinding Wheel Lab Grown Diamond Application. Construction stone, glass, ceramic, magnetic materials ... Patent Certificate Technical Consultants. Production Process ...
>EP0159383A1 - Machine for grinding toric ... - Google …
the invention relates to a machine for grinding toric surfaces on optical lenses, with a machine frame, a first holder and a second holder, wherein in one holder a headstock with a tool spindle...
>US4733502A - Method for grinding and polishing lenses …
- Google Patents The method of both the surface grinding, or fining, and the polishing of a lens are accomplished on the same surfacing machine …
>Canon Patent: RF 70-200mm f/2.8L (not the already released ...
Canon patent application 2021-173892 (Japan) discusses optical formulas for what seems to be a RF 70-200mm f/2.8L lens. However, as asobinet points out, the patent does not refer to the already released RF 70-200mm f/2.8L. The lens described in the patent seems to have an entirely different optical design.
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>Results - The Lens - Free & Open Patent and Scholarly Search
Cited Patent Count. Relevance is based on the query matching score used in Elasticsearch. The document matching score for a search term is increased: The shorter a matching field is, e.g. a matching title would score higher than a matching abstract. The more times the term is matched to the document. The document matching score for a search ...
>The Lens - Free & Open Patent and Scholarly Search
Lens Reports is a new facility for creating evidence-based, open, sharable and reusable reports linked to real Lens data and analytics. The next evolution of Lens, search, collect, analyze, annotate and now present your findings in a flexible, data-driven reporting interface.
>Canon Patent: 28-70mm f/2.8 And 28-60mm f/4 Lenses For RF ...
Drawing from the patent literature. And yet another Canon patent application for lenses for the RF mount (EOS R). Canon patent application 2021-179550A (Japan, spotted by Hi Lows Note) discusses optical formulas for a 28-70mm f/2.8 and a 28-60mm f/4 lens, both for full frame mirrorless cameras (hence for the RF mount on the EOS R).
>Fast-tool-servo micro-grooving freeform surfaces with ...
A user-friendly interface (UI) was designed with functional operations buttons (e.g. sampling rate, active probe, data synchronisation operations, etc.) and a data visualization window was designed to show real-time monitored surface measurement results ().The 2D profile of machined surface can be created immediately with the uploaded data from HudCNC.
>patents | HARUCHIKA CO., LTD.
Our Patents. 3186781 To provide a lens polishing device and a lens processing pan tilt removal mechanism. 5118781 To provide a workpiece carrying device equipped with a pallet fixing mechanism. 5508196 To provide a work centering method of a centering and edging machine. 5385093 The coarse grinding method and lens grinding machine of the lens.
>US4383393A - Automatic lens grinding machine - Google …
US4383393A - Automatic lens grinding machine - Google Patents An automatic grinding machine adapted to form a desired profile of the peripheral ridge of a …
>About The Lens » Lens Use Cases
The Lens for Patent Offices The 21st Century Patent Office needs to be much more than a mill for grinding out rights that fall to the courts to validate. Instead, it can be, and should be an enabler of innovation, of building bridges between ideas and outcomes, of stimulating investments and the resilience of the problem solving ecosystem.
>New Patents: Canon RF 28-70mm f/2.8 & RF 28-60mm f/4 Lenses
Canon has filed two new RF lens patents for the 28-70mm f/2.8and RF 28-60mm f/4 Lenses, which are designed for Canon EOS R system. Take a look at the patent details below: [Publication number] JP 2021-179550 ( P2021-179550A) [Publication date] November 18, 2021. [Patent application title] Optical system and imaging device.
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>Thoriated Camera Lens (ca. 1970s) | Museum of Radiation ...
(7) Thorium contained in finished optical lenses, provided that each lens does not contain more than 30 percent by weight of thorium; and that the exemption contained in this subparagraph shall not be deemed to authorize either: (i) The shaping, grinding or polishing of such lens or manufacturing processes other than the assembly of such lens ...
>US2869422A - Multifocal lens having a ... - Google Patents
US2869422A US470755A US47075554A US2869422A US 2869422 A US2869422 A US 2869422A US 470755 A US470755 A US 470755A US 47075554 A US47075554 A US 47075554A US 2869422 A US2869422 A US 2869422A Authority US United States Prior art keywords glass point curvature curve radius Prior art date Legal status (The legal …
>Thoriated Camera Lens (ca. 1970s) | Museum of Radiation ...
A couple of patents for optical glass containing thorium were issued in 1939 that were of a somewhat general nature. Later, in 1949, a patent with a couple of specific formulations for such glass was issued to Paul De Paolis at Kodak. ... The shaping, grinding or polishing of such lens or manufacturing processes other than the assembly of such ...
>Lenses - Engineering and Technology History Wiki
Lenses were produced by grinding them against a metal tool called a " lap," which had been produced using a lathe. Convex lenses required a lap having a portion of a hemispherical cavity. A male form was used for concave lenses. The laps could be made from any metal, since hardness was not a major factor.
>Nikon Designs Two f/1.2 Zoom Lenses: 35-50mm and 50-70mm ...
Two Nikon patents have surfaced that show the company has designed two large-aperture zoom lenses presumably for its mirrorless Z-mount camera system: a 35-50mm f/1.2 and a 50-70mm f/1.2.
>Superabrasive Grinding Wheel
3A1 diamond wheels for side grinding circular saw. 4V2 diamond grinding wheels for sharpening face carbide tipped circul. Resin Diamond Grinding Wheel For Thermal Spraying Coating. Vitrified Bond Wheels. Vitrified Peripheral Diamond Grinding Wheel. Vitrified Diamond Grinding Wheel for PCD & PCBN Tool. Vitrified Cylindrical diamond grinding wheel.
>United States v. Univis Lens Co., 316 U.S. 241, 62 S. Ct ...
The District Court found, 41 F. Supp. 258, that the claims of each of these eight patents are for a finished lens and that consequently the wholesalers and finishing retailers, in grinding and polishing each lens, practice in part the patent, in conformity to which the Lens Company has manufactured the blanks which it supplies. The court ...
>US2826874A - Automatic lens grinding ... - …
51-460 My invention relates to an automatic lens grinding and polishing machine.
>Lens grinding apparatus and method - Google Patents
- LENS GRINDING APPARATUS AND METHOD Filed Jan. 17, 1961 2 Sheets-Sheet 2 I N VE N TOE ERNEST 7T DALTON QTTOE'NEY United States Patent 0 3,117,396 LENS GRINDING APPARATUS AND METHOD Ernest T. Dalton, Southhridge, Masa, assignor to American Optical Company, Southbridge, Mass., a voluntary association of Massachusetts Filed fan. 17, 1961, …
>ARfusion™ - META
In a traditional cast plastic lens, 80% of the original lens blank material is wasted as the prescription is ground into the blank. With the same amount of material, ARfusion™ can produce five lenses. Grinding the semi-finished blank also requires 50-100 liters of water, which becomes filled with polymeric waste (micro plastic).
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