Edmund Optics Catalog

Longer focal lengths offer a narrower angle of view and more magnification, which means they are better suited to sport or wildlife photography than architectural photography.

2023925 — Lenses are classified as wide-angle, standard, or telephoto depending on their focal lengths. Ultra-wide-angle lenses are a subset of wide-angle ...

Lenses with shorter focal lengths provide a much wider angle of view and less magnification. This makes them better suited to landscapes than to product photography.

As the global leader in optical bonding, Fortec US supports you in all project phases – from the construction of the metal housing and procurement of specific parts to the in-house development of controller boards and touchscreen integration. In need of a product, part, or have a project in mind? Contact us today at (631) 580-4360 or click here for more information.

2023711 — The light microscope bends a beam of light at the specimen using a series of lenses to provide a clear image of the specimen to the observer. In ...

Ultra steep longpass optical filters block shorter wavelengths while transmitting longer ones. Alluxa ultra steep longpass optical filters deliver superior ...

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by L Pezze · 2007 · Cited by 383 — Abstract page for arXiv paper 0705.4631: Mach-Zehnder Interferometry at the Heisenberg Limit with coherent and squeezed-vacuum light.

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Throughout this course, we’re referring to six essentials of photography. However, it is important to mention that this could in fact be five! Why? Because images can be recorded without a lens on so-called pinhole cameras (or camera obscuras).

Optical bonding is a crucial process that consists of applying an adhesive layer to a glass screen or touchscreen, which is then attached to an LCD display panel. This process secures the two together to create a solid bond without any air gap in between them. Optical bonding is essential for touch screens and cover glass as it dramatically improves the optics and readability of the display and has several other advantages.

These elements serve to direct the light to a single focal point so that it can accurately be recorded by the sensor (9) once the mirror (7) flips up (triggered when you press the shutter button). Mirrorless cameras work the same way, but do not have the mirror or prism.

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However, recording an image without a lens is far more complex, and doesn’t afford the photographer the same creative freedom. Essentially, without a lens, you're shooting at a very small fixed aperture. Thanks to the variations in magnification they offer, lenses allow us to shoot many different objects, which simply wouldn’t be possible with a camera obscura.

Some lenses feature a fixed aperture. Catadioptric, or mirror lenses, which used to be fairly common, usually feature a longer focal length, such as 500mm at a fixed aperture of f6.3. Most telescopes are catadioptric.

…object passes is called the objective lens. It should be noted that the light will be inverted at the focal plane. A second lens, referred to as the eyepiece ...

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Lenses focus the light onto the recording medium, which allows an image to be recorded. As you’ll see from the illustration of a DSLR camera below, light enters the lens and passes through the front element (2) before reaching several lens elements (3, 5 & 6).

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Zoom lenses provide a variety of focal lengths. This makes them very versatile and reduces the need for multiple lenses.

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Aperture refers to the opening in the lens that controls how much light reaches the sensor. This is indicated in the format 1:2.8, for example, with the second set of numbers indicating the maximum aperture.

Dry optical bonding is done without using UV radiation, so the adhesive never yellows. The dry process binds the LCD panel to the touch screen using a pre-cured silicone adhesive sheet to create a strong bond. The process is performed inside a vacuum chamber in our ISO Class 7 clean room so there are no bubbles or debris introduced into the bond. The silicone adhesive remains pliable, resulting in a bond that is reworkable and the material absorbs impact to improve the durability of the front glass.

Focal length is usually indicated both on the side of the lens barrel and sometimes on the front of the lens, along with the lens diameter.

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A file with the HWP file extension is a Hangul Word Processor file, or sometimes called a Hanword Document file. Thinkfree Office Viewer is a free HWP ...

Prime (or fixed) lenses feature a fixed focal length. Available in a range of focal lengths, these lenses are known for delivering high-quality images. They also generally offer much wider apertures than zoom lenses do.

Aug 11, 2022 — It is worth noting again that these suppliers are small businesses, often second gigs and routinely minimally staffed. They cannot adhere to the ...

Traditionally, optical bonding has been done using a liquid process. Liquid bonding is completed using a transparent, liquid adhesive that takes the LCD panel and adheres it to the touch screen device. UV radiation is then used to cure the adhesive and give you a strong optical bond. The UV cured adhesive is not reworkable and is prone to yellow over time. If the liquid adhesive seeps into the LCD during the process, the LCD is ruined. The process also has inherent quality defects like bubbles and debris.

Jun 24, 2022 — Pancake lenses can shrink VR headsets by using polarizers, waveplates, and reflective surfaces to fold the optical path through two glass or ...

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Some lenses will feature two maximum apertures (shown as 1:4-5.6). This means that, as you zoom, the aperture capability changes. So at the shortest focal length, you may be able to shoot at f4, but once you zoom to the longest focal length, the widest aperture you’ll be able to shoot at will be f5.6. Generally lenses with wider apertures are favourable due to their increased light-capturing capabilities.

Typically, lens names are formatted like this: Canon EF 24-70mm f/2.8L II USM Lens or Nikon AF-S 50mm f/1.8G. Each of these numbers and letters relays essential information, such as focal length, maximum aperture, lens version and focusing motor. Other features specified can include stabilisation, filter diameter and focusing distances.