#achromatic lens

[cameracious]

Camera Lens Evolution

The camera lens has been an integral part of photography since its inception, and its evolution has been marked by numerous technological advancements. In this article, we will explore the major milestones in the evolution of camera lenses, from the earliest experiments to the advanced features of modern lenses.

Early Experiments

The earliest experiments with lenses date back to the ancient Greeks, who used glass spheres to magnify images. The camera obscura, a device that used a pinhole to project an image onto a surface, was also an early precursor to the modern camera lens. In the 17th century, scientists began experimenting with lenses made of polished glass to improve the quality of the projected image.

The Achromatic Lens

In 1757, English optician John Dollond invented the achromatic lens, a lens made of two different types of glass that reduced the problem of chromatic aberration. This innovation improved the quality of the projected image and paved the way for the development of modern camera lenses.

The Anastigmat Lens

In 1887, German optician Paul Rudolph invented the anastigmat lens, a lens that corrected for distortion and other optical aberrations. This innovation allowed photographers to capture sharp, clear images with greater accuracy and fidelity.

The Zoom Lens

In 1959, the first zoom lens was introduced by the Japanese company Bell & Howell. The zoom lens allowed photographers to adjust the focal length of the lens, which made it possible to capture images at different magnifications without changing lenses. The zoom lens was a major breakthrough in photography, allowing photographers to capture a wider range of images with a single lens.

Aspherical Lenses

In the 1980s, camera manufacturers began to experiment with aspherical lenses, which used non-spherical surfaces to correct for optical aberrations. Aspherical lenses were more complex and expensive to produce than traditional spherical lenses, but they offered improved image quality and reduced distortion.

Autofocus Lenses

In the 1980s and 1990s, camera manufacturers began to introduce autofocus lenses, which used motors and sensors to automatically adjust the focus of the lens. This feature made photography more accessible to casual users and helped to popularize photography as a hobby.

Image Stabilization

In the 1990s and 2000s, camera manufacturers introduced image stabilization technology, which used gyroscopic sensors to reduce camera shake and improve image quality. Image stabilization technology has become a standard feature in many modern camera lenses, and it has allowed photographers to capture sharper images in a wider range of conditions.

Conclusion

The evolution of camera lenses has been marked by numerous technological advancements that have revolutionized the field of photography. Each new development has expanded the possibilities of what is possible with photography, and has made it easier for photographers to capture sharp, clear, and accurate images. While the history of camera lenses is still being written, the legacy of these early optical pioneers lives on, inspiring and informing the work of photographers around the world.

Source: History of Camera – From Camera Obscura to SLR

[ultralowoxygen]

Christmas In Trafalgar Square by Brett Sheehan Via Flickr: Night shot of the Trafalgar Square Christmas stalls, using my Daguerreotype lens from Lomography. Nikon F4. CineStill 800T 35mm C41 film.

[accurateoptics]

Achromatic Lenses - Accurate Optics

Achromatic lenses are an important part of any optical system. They help to correct chromatic aberration, which is a type of distortion that can occur when light passes through a lens. Achromatic lenses are made up of two glass elements that are placed in precise alignment with each other. This helps to ensure that the colors arriving at the image sensor are correctly focused. To know more interesting facts about Achromatic Lenses, click here: https://bit.ly/3OaI5Uo 

Call us at +91-9888877542!

[komikuma]

VIKAVOLT + MILOTIC.

aka: Milovolt. ( water / electric. ) ability: illuminate, marvel scale or volt absorb. ( HH. ) evolves from Charjabug when traded with an Achro Scale. Milovolt lives in the darkest depths of the ocean, using it's arms to dig into the sands of the seafloor to hunt for food. The yellow pattern on it's tail and their eyes emit a soft glow, surging with electricity. ACHRO SCALE: The Achro Scale is similar to the prism scale, yet is monotone and dull in color. It's name comes from 'achromatic' which means to have no hue or colorless. It could also be named after achromatic lens.

[destinystarlight37]

just a random poll

[starshine-valley]

Prosekai opinions :DD (credits go to @ace-and-the-rpg-horrors !! + added stuff)

Leo/Need:

Favorite Virtual Singer: Rin

Favorite member: Honami

Favorite Singer: Shiho

Favorite Commissioned song: NeedLe

Favorite Cover: Kagerou Daze

Favorite Event: Resonating with You or Stella After the Rain

Favorite Card Set: Carrying Our Thoughts and Feelings, Shooting Star!! (That’s what the Gacha is called anyway)

Favorite in unit ship: Poly/Need or ShihoSaki

Favorite NPC: lori

Favorite out of unit ship: Honakana, IchiNene, HaruSaki, ShihoAn

More More Jump:

Favorite Virtual Singer: Len

Favorite Member: Haruka

Favorite Singer: Shizuku

Favorite Commissioned Song: More Jump More or Newly Edgy Idols

Favorite Cover: Love Trial or Shoujo Rei

Favorite Event: You Deserve It! Break Time! Or Hear Me! Hopeful Show♪

Favorite Card Set: Casting Magic! Witch Craft

Favorite in unit ship: Polyjump or Minoai/minoharu

Favorite NPC: Nanamin

Favorite out of unit ship: AiriEna, Shizumafu, HaruSaki, Kohamino

Vivid Bad Squad:

Favorite Virtual Singer: Len, Rin and Meiko

Favorite Member: Akito (ew /j)

Favorite Singer: Akito and An

Favorite Commissioned Song: Gekokujou or CRaZY

Favorite Cover: ECHO

Favorite Event: Light Up The Fire or BURN MY SOUL

Favorite Card Set: Chasing That Day’s Light

Favorite in unit ship: Anhane

Favorite NPC: … taiga :DD (/j (kotaro mita))

Favorite out of unit ship: ToyaRui, MizuAn, MinoKoha (akitaro if that counts?)

Wonderlands x Showtime:

Favorite Virtual Singer: Luka and Miku

Favorite Member: Emu

Favorite Singer: Tsukasa

Favorite Commissioned Song: Mr. Showtime or Tondemo Wonders (i’m tondemo wonders biggest fan real not fake)

Favorite Cover: King, Positive Dance Time, Nonsense Bungaku and Ah, It’s a Wonderful Cat’s Life

Favorite Event: Smile of a Dreamer

Favorite Card Set: Hidden Circus and Never Ending Showtime

Favorite in unit ship: Emukasa !!

Favorite NPC: Hinata Otori

Favorite out of unit ship: ToyaRui and IchiNene

Nightcord at 25:

Favorite Virtual Singer: Kaito, Len and Luka

Favorite Member: Ena

Favorite singer: Mizuki and Ena

Favorite Commissioned Song: Kitty, Samsa, Theater, Jackpot Sad Girl and IDsmile

Favorite Cover: Self inflicted Achromatic and Bitter Choco Decoration

Favorite Event: Immiscible Discord and Saying goodbye to my masked self

Favorite Card Set: Poisonous Fangs and Peeking Shadows, Escape from Rain, Where is ♡? And Ball of the Marionettes

Favorite in unit ship: Kanaena

Favorite NPC: Mizuki’s Sister or Futaba

Favorite out of unit ship: MizuAn, Honakana and AiriEna

General:

Favorite unit: Vivid Bad Squad and Leo/Need

Unit Ranking: Vivid Bad Squad / Leo/Need, Nightcord at 25:00 / More More Jump, Wonderlands x Showtime (i love them i promise just not as much as the others 😭🙏🏻)

Unit with the best main story: Leo/Need

Unit with the best event stories: Vivid Bad Squad

Unit with the best cover songs: More More Jump

Unit with the best commissioned songs: Wonderlands x Showtime

Unit with the best cards: Nightcord at 25:00

Top five singers: Mizuki, Shiho, Ena, Shizuku and Akito

Top five characters: Ena, Honami, Akito, Emu and Haruka

Favorite virtual singer: Rin

Favorite Mixed Event: Standing Next to the Kind and Gentle You (i love honakana) and KAMIYAMA HIGH FESTIVAL!

Favorite Mixed Cart Set: Bon Voyage・Sailing and Bonding

Favorite Popular Ship: Honakana (??) or ShihoSaki / Poly/Need

Favorite rarepair: shizumafu and ichinene

Favorite Commissioned Song: NEO, Be The Music and Salamander !!

[needlecraftsandphotographs]

Yasmin on Lomography Berlin Kino B&W 400 

Chicago 2022

Canon EOS3, Lomography Achromat Art Lens

[xenosagaepisodeone]

what's your fav vocaloid songs?

Thank you for asking me this, anonymous

Adrienne's 10th grade video2mp3 cultivated playlist: Side B (Side A was just all momrock and daft punk)

Tawagoto Speaker

Rolling Girl

Double Lariat

Witch

Butterfly on Your Right Shoulder (len ver LOL)

Alluring Secret - Black Vow (this should be considered on par with Magnet tbh the gay angst is off the charts)

Paradise of Light and Shadow (I'm so happy that this trilogy was not canned LMAO the worldbuilding blew me away at the time)

Two Breaths Walking

Paradichlorobenzene

One of Repetition

Hello, How Are You

Matryoshka

Servant of Evil

Just Be Friends

Bad End Night

Scissorloid

Madness of Duke Venomania (what can I say I like ensembles)

Self-Inflicted Achromatic

Shinitagari

The Little Mermaid

[fison265]

TITLE: Polarizing microscope/Weight-15 kg

DESCRIPTION:

The Fison Polarizing Microscope includes a 360° rotational polarizer, a 0.1° Vernier scale analyzer, and an inbuilt Bertrand lens with changeable center. It comprises strain-free plan achromatic objectives(4X, 10X, 20X, 40X, and 100X), EWF10X/22 eyepieces, and optical compensators such as the First Order Red Plate, Guarder Wave Plate, and Quartz Wedge. It uses a polarizer and an analyzer to ensure correct imaging inorthogonal and conoscopic polarizations.

[labnics25]

Metallurgy Microscope

The Metallurgy Microscope NMM-100 is designed to meet the performance demands of the metal and alloy engineering industry. Equipped with a high-quality infinite far beam system. The unit has a coarse and micro-motion coaxial focusing system. It features a falling and transmission illumination system, an infinite long-distance flat field achromatic objective lens, and a built-in polarizing observation device.

[omkarpatel]

Optical Microscopes: Revolutionizing the Fields of Science

Introduction Optical microscopes have played a pivotal role in revolutionizing various fields of science by allowing us to see the microscopic world that was previously invisible to the naked eye. In this article, we will discuss the history and development of optical microscopes, their core components and working mechanism, various types of modern optical microscopes, and their applications in diverse fields of science. History and Development The earliest simple microscopes date back to the late 16th century and were limited to simple magnification lenses. Over time, microscope technology advanced significantly through the contributions of major scientists and inventors. In the early 17th century, Galileo Galilei and others improved basic compound microscopes by combining multiple convex lenses to achieve higher magnifications. In the mid-1600s, Antonie van Leeuwenhoek developed improved single-lens microscopes and was the first to observe bacteria and other microorganisms. Major advances occurred in the 19th century with the invention of the achromatic objective lens which reduced chromatic aberration, enabling higher magnifications. Other 19th century developments include mechanical stages to fix samples, oil immersion lenses, achromatic eyepiece lenses, standardized objectives, and illumination sources. In the 20th century, microscopes evolved to use optics, electronics, and new laser and digital imaging technologies. Today, advanced optical microscopes still play a very important role in scientific research and industrial applications. Core Components and Working A basic optical microscope consists of essential core components including light sources, lenses, mechanical stages, and eyepieces. Light from the illumination source travels through the objective lens closest to the sample. The objective primarily controls the magnification and resolution of the image. Light reflected from the sample then passes through further lens elements and tube lenses in the body of the microscope to the eyepiece. Eyepieces contain additional lenses and are adjusted by the user to suit their eyesight for a zoomed-out viewing of the magnified image. Modern optical microscopes also include mechanics to precisely control magnification, focus, andXYZ stage movements to scan samples. The core working principle involves the lenses bending and focusing beams of light to magnify tiny details of the specimen onto the retina or digital sensors. Types of Modern Optical Microscopes Compound Microscopes - Upright Microscopes: Used for basic biology studies with components arranged vertically above the stage. - Inverted Microscopes: Specifically designed for cell and tissue culture applications with components below the stage. - Stereo Microscopes: Low power "macroscopes" used for 3D inspection of samples from various angles. Specialized Microscopes - Phase Contrast Microscopes: Enhance contrast of transparent/live samples by converting phase/structural variations into brightness variations. - Fluorescence Microscopes: Fitted with light sources and filters to see fluorescent probes, proteins, DNA in living/fixed cells and tissues. - Confocal Laser Scanning Microscopes: Capture high resolution optical sections and rebuild 3D images using point illumination and detectors. - Digital Microscopes: Integrate high resolution digital cameras for live sample viewing, measurement and capturing images/videos for documentation.

[hsmleindia]

Upright Metallurgical Microscope – MUM-400BD & 600B

Upright metallurgical microscope is another type of optical microscope used for examining the microstructure of opaque materials, particularly metals and alloys. Unlike the inverted metallurgical microscope, the light source in an upright metallurgical microscope is positioned above the specimen stage, and the objective lens and eyepiece are also above the sample. This configuration is more similar to traditional microscopes and is often used for examining polished and prepared thin sections of materials. Upright metallurgical microscopes are suited for the examination of metallurgical specimens such as micro-structure analysis, various materials testing, opaque object or transparent object. It is also equipped with yellow, blue, and green filters and equipped with long working distance plan achromatic objectives and field eyepieces to provide excellent optics quality and operational performance. These are the best instruments in research work metallography, mineralogy, precision engineering, electronics, etc.

Key Features :

Upright Design: As the name suggests, the upright metallurgical microscope has a conventional design where the light source, objective lens, and eyepiece are all located above the specimen stage. Polished Thin Sections: This microscope is particularly suitable for examining thin sections of materials that have been polished to a transparent or semi-transparent state. These thin sections are typically prepared through slicing, grinding, and polishing techniques. Brightfield Illumination: The primary mode of illumination for an upright metallurgical microscope is brightfield illumination, where light passes through the specimen from above. This allows for the observation of the sample’s microstructure and features. Metallurgical Objectives: Similar to the inverted metallurgical microscope, the upright version also uses metallurgical objectives that are optimized for examining opaque materials. These objectives offer high numerical apertures and sufficient working distances for observing prepared thin sections. Polarized Light Capability: Some models of upright metallurgical microscopes might also offer polarized light capabilities for enhanced contrast and analysis. Image Analysis and Documentation: Like other advanced microscopes, upright metallurgical microscopes often come with digital imaging features for capturing, analyzing, and documenting microstructural details. Sample Stage: The sample stage can be adjusted to accommodate different sizes of prepared thin sections.

[ukge]

Ruper x10 Achromatic Lens Loupe (14mm)

This is the highest quality x10 field loupe that we sell. It is made in Japan by the famous Ruper factory and has a superb high quality achromatic lens, which is the clearest lens available. It is a chrome plated loupe and comes with small carry pouch.

[medprime]

Future of Microscope Objectives Tackling Future Challenges

Miniaturization for added mobility

UV Microscopy-short wavelengths for increased resolution and contrast enhancement

Automated systems for more throughput

Liquid lens integration for quick focus adjustments

Cilika from the house of Medprime Technologies, a medical device company, is a major breakthrough in field of future-ready technology pertaining to pathology, telepathology, teleradiology and telemedicine arenas. The integration of tablets and smartphones with microscopy brings to the table a multitude of ways to process, share and analyze data directly from the microscope.

Cilika Portable Series

Cilika Portable, world’s first smartphone integrated microscope, is the perfect choice for work-from-home and extensive travelling, capturing wide field of view with True View Technology. Its unmatched high-quality imaging, battery backup and lightweight body with travel bag makes it an undisputable choice for field visits, medical camps and seminars. Available in both standard and premium variants, it has oil immersion plan achromat lenses and other state-of-the-art features.

Read more here - https://www.medprimetech.com/blog/the-bright-future-of-digital-microscopy/

[teachersource]

Joseph von Fraunhofer was born on March 6, 1787. A German physicist and optical lens manufacturer. He made optical glass, an achromatic telescope, and objective lenses. He also invented the spectroscope and developed diffraction grating. In 1814, he discovered and studied the dark absorption lines in the spectrum of the sun now known as Fraunhofer lines. Fraunhofer produced various optical instruments for his firm. This included the Fraunhofer Dorpat Refractor used by Struve (delivered 1824 to Dorpat Observatory), and the Bessel Heliometer (delivered posthumously), which were both used to collect data for stellar parallax.