#aspherical lenses

[techdriveplay]

Sony Releases FE 24-50mm F2.8 G, a Compact, Large Aperture F2.8  G Lens™ with High Performance Optics  

Sony is pleased to announce the release of its new compact 35mm full-frame compatible α™ (Alpha™) E-mount lens, FE 24-50mm F2.8  G (product name SEL2450G) standard zoom with F2.8 maximum aperture over the entire zoom range. Despite its small and lightweight body, it achieves the high-resolution performance and beautiful bokeh that can be expected from a large aperture G Lens with F2.8.  It covers…

[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

[cmipooja]

Silicon (Si) Lenses Market Ready To Reach An Estimated Market Size Of US$ 383.76 Million By The End Of 2030

Market Overview: The global Silicon (Si) Lenses Market is estimated to be valued at US$ 215.18 million in 2022 and is expected to exhibit a CAGR of 7.5% over the forecast period 2022-2030, as highlighted in a new report published by Coherent Market Insights. Silicon lenses are widely used in various industries such as healthcare, aerospace, defense, and electronics. These lenses offer numerous advantages such as high transmission rate, low reflection, and excellent thermal stability. The demand for Silicon lenses is driven by the increasing use of technology in different sectors and the need for high-quality optical components. Market key trends: The key trend driving the Silicon lenses market is the growing demand for high-resolution imaging systems. With the advancements in technology, the demand for high-quality imaging has increased significantly. Silicon lenses offer excellent image resolution and clarity, making them ideal for use in cameras and other imaging devices. These lenses provide superior optical performance, ensuring clear and sharp images. For instance, many smartphone manufacturers are using Silicon lenses to enhance the image quality of their devices. PEST Analysis: Political: The political factors impacting the Silicon lenses market include government regulations related to the use of optical components in different industries. Governments focus on promoting domestic manufacturing and research and development activities to drive technological innovation. Economic: The economic factors influencing the market include the overall economic growth of countries, disposable income of individuals, and investment in technological advancements. The growth of emerging economies and increasing disposable income are expected to drive market growth. Social: The social factors affecting the market include changing consumer preferences and an increasing demand for high-quality imaging devices. The adoption of smartphones with advanced camera features and the use of Silicon lenses in healthcare and defense sectors are driving market growth. Technological: Technological advancements play a crucial role in the Silicon lenses market. Continuous innovations in lens manufacturing techniques, such as precision molding and coating technologies, are enhancing the quality and performance of Silicon lenses. The integration of Silicon lenses with other advanced technologies, such as augmented reality and artificial intelligence, is also driving market growth. Key Takeaways: - The Global Silicon (Si) Lenses Market Demand is expected to witness high growth, exhibiting a CAGR of 7.5% over the forecast period. This growth is driven by the increasing demand for high-resolution imaging systems in various industries. - In terms of regional analysis, North America is expected to dominate the Silicon lenses market due to the presence of major players and technological advancements in the region. Asia Pacific is expected to be the fastest-growing region, driven by the increasing demand for smartphones and consumer electronics. - Key players operating in the global Silicon lenses market include Edmund Optics, Thorlabs, ISP Optics Corporation, II-VI Incorporated, Precision Optical Inc., CVI Laser Optics, Newport Corporation, LightPath Technologies, Sydor Optics, Janos Technology LLC, Reynard Corporation, Shanghai Optics Inc., Knight Optical, Rocky Mountain Instrument Co., and Shanghai Optics Technology Co., Ltd. These players focus on product innovation and strategic partnerships to gain a competitive edge in the market.

[karingottschalk]

Leitz Auction: Leica Vario-Elmar-M 3.5-5.6/28-75mm Aspheric Prototype – Commentary

[taperwolf]

Edmund Scientific was a company that got its start in the 1940s selling surplus optics — lenses, and then microscopes and telescopes — and expanded into a big mail-order catalog that sold science educational stuff to the public. It also branched out into selling top-shelf scientific lens, camera, and laser systems to industry and research labs. Early in the 2000s, they decided they were just going to focus on the latter and flogged off the consumer end of the business.

But somehow I stayed on their mailing list, which is why I've gotten a glossy catalog full of aspherical lenses, optical stages, beamsplitters, neutral density filters, and helium-neon lasers delivered to me every couple of months for the past two decades.

[girlbeans]

☀️ DSLR spotlight: Panasonic Lumix DMC-L10 🌕

In 2007, Panasonic released their second DSLR, the Lumix DMC-L10. This is about as close as I am at this point to Leica hardware, as this camera comes with an optically stabilized 14-50mm Leica 'D Vario-Elmar' aspherical telephoto lens.

Capturing up to 10.1 megapixels, the Leica glass takes crisp and vibrant photographs, especially when ample light is present, as the highest aperture is only F3.8 when set to the minimum 14mm focal length.

Overall, I find it an enjoyable shooting experience, but without an extensive selection of Four Thirds mount lenses in my collection it doesn't get an extreme amount of use from me. It's the first DSLR released with a fully articulating LCD screen on the rear of the camera, so I'm sure that was a huge part of the cool factor back in 2007.

[nateaz]

As a photographer who has worked with both modern and vintage glass in antique lenses, I can easily distinguish lens artifacts. I wish a lot of you weren't so gullible who think lens flare, bokeh, aspherical artifacts were supernatural orbs!? I have to debunk and point this out on the daily when people post so many different "orb" photos! It makes me lose hope in Humanity and think we are on a downward slope to a pure idiocracy! You have to be smarter than this, especially the UFO Enthusaists, etc. https://www.instagram.com/p/Cn7fMx2vXXu/?igshid=NGJjMDIxMWI=

[bajaj-eye-care-centre]

Cataract surgery in Pitampura

Cataract Surgery In Pitampura, Delhi

Micro Phaco with Micro Incision Foldable Lens (MICS)

Cataract is the clouding of the lens of your eye that impairs vision. Cataract is responsible for more than half of blindness in the world, which is a grim fact because it is a treatable condition. In cataract there is a buildup of protein in the lens that makes it cloudy. This prevents light from passing clearly through the lens, thereby causing loss of vision.

Advancing age is a primary reason for cataract. With age, protein of the lens turns opaque. Other causes of cataract are metabolic disorders such as diabetes, excessive exposure to sunlight, lifestyle disorders like heavy alcohol consumption and smoking. Injury to the eye can also lead to clouding of the lens of the eye.

Treatment of Cataract When cataract forms, surgery is the only way to treat it. In cataract surgery, the surgeon removes the clouded lens and puts an Intra Ocular Lens (IOL) in your eye. Your vision will be as good as pre-cataract days, though you may need to wear glasses. Over the years, cataract surgery has moved from vision restorative to refractive surgery, so that you have reduced need of glasses.

Type of Intra Ocular Lenses (IOL) for Cataract Surgery

Foldable IOL Micro Phaco Surgery

Aspheric Foldable IOL Micro Phaco Surgery

Toric Foldable IOL Micro Phaco Surgery

Multi-Focal Foldable IOL Micro Phaco Surgery

Phacoemulsification with Foldable IOL's

At Bajaj Eye Care Centre we use STELLARIS TM Micro Surgical System which is the world’s most advanced technology of Cataract Surgery by Bausch and Lomb approved by FDA.

Through microphaco technology a very small incision of around 1.8mm is required to remove cataract from the eye. Through this ultra small incision, a very high frequency MICS Phaco tip is introduced inside the eye, breaking the hardest of cataracts into very small fragments which are sucked out through the same tip. Irrigation is provided through a separate side port. This arrangement provides the advantage of speedy recovery, faster healing and lesser surgery induced astigmatism. The surgery involves insertion of foldable Intra-Ocular lens which can be inserted through the 1.8mm incision.

Bajaj Eye Care Centre is also equipped with Pulsar Minimal Stress Phaco Emulsification with advanced Posterior Vitrectome System from OPTIKON(Italy)

We are handling a variety of Cataract cases and have given complete satisfaction to thousands of patients who have chosen Bajaj Eye Care Centre for cataract surgery.

Types of Intra-Ocular Lenses (IOL) for Cataract Surgery

Hydrophilic foldable IOL

Hydrophobic foldable IOL

Aspheric foldable IOL

MICS foldable IOL

Toric foldable IOL

Multifocal foldable IOL

Crystalens foldable IOL from Bausch & Lomb

[fulviomeloni]

FuzWeb Aror Single Vision Aspheric Clear Myopic Lenses http://dlvr.it/TGztQs

[krishnaeyecentre]

The Role of Intraocular Lenses (IOLs) in Cataract Surgery: Choosing the Best Fit

Cataract surgery is one of the most common and successful medical procedures in the world. It involves removing the eye's cloudy natural lens and replacing it with an intraocular lens (IOL) to restore clear vision. With advancements in technology, choosing the right IOL has become a crucial step in ensuring the best visual outcomes. This guide will help you understand the role of IOLs in cataract surgery and how to choose the best fit for your lifestyle and visual needs.

What Are Intraocular Lenses (IOLs)?

Intraocular lenses (IOLs) are artificial lenses implanted in the eye to replace the natural lens removed during cataract surgery. They are typically made of flexible and durable materials, such as silicone or acrylic, and are designed to focus light accurately on the retina to provide clear vision.

Types of Intraocular Lenses

The choice of IOL can significantly impact your post-surgery vision. Here’s a detailed look at the most common types:

Monofocal Lenses Features: Provide clear vision at a single distance (near, intermediate, or far). Ideal For: Patients who don’t mind wearing glasses for certain activities, such as reading or driving. Limitations: These lenses do not correct presbyopia (age-related difficulty in seeing close objects).

Multifocal Lenses Features: Provide multiple focus points, allowing clear vision at near, intermediate, and far distances. Ideal For: Patients who want to reduce or eliminate the need for glasses. Limitations: May cause glare or halos around lights, especially at night.

Toric Lenses Features: Specifically designed for patients with astigmatism, correcting distorted or blurry vision. Ideal For: Individuals with significant astigmatism who want sharper vision without additional corrective lenses. Limitations: May still require glasses for some activities.

Extended Depth-of-Focus (EDOF) Lenses Features: Provide a continuous range of vision, especially for intermediate and far distances, while minimizing glare and halos. Ideal For: Patients who use digital devices frequently or engage in activities requiring intermediate vision. Limitations: May require reading glasses for very close tasks. How to Choose the Best IOL for Your Needs Selecting the right IOL depends on several factors, including your lifestyle, vision goals, and any pre-existing eye conditions. Here’s what you should consider:

Lifestyle Needs If you’re an avid reader or do a lot of close-up work, multifocal or EDOF lenses may be a better fit. For those who prioritize night driving, mono-focal lenses might minimize glare and halos.

Vision Expectations Discuss your expectations with your surgeon. If complete freedom from glasses is your goal, premium IOLs like multifocal or EDOF lenses are worth considering.

Pre-existing Conditions Conditions like astigmatism or macular degeneration can influence the choice of IOL. Toric lenses, for instance, are ideal for patients with astigmatism.

Budget Considerations While mono-focal lenses are usually covered by insurance, premium lenses like multifocal or toric lenses may require out-of-pocket expenses. Evaluate your budget before making a decision. The Role of Advanced Technology in IOLs Modern IOLs come with innovative features designed to enhance outcomes and cater to individual needs:

Blue Light Filtering Some IOLs include filters that block harmful blue light from screens and sunlight, reducing eye strain and protecting the retina.

Wavefront Technology Wavefront-guided IOLs provide sharper vision by correcting subtle optical imperfections.

Aspheric Design Aspheric IOLs mimic the natural curvature of the human lens, improving contrast sensitivity and reducing visual distortions.

What to Expect During Cataract Surgery

Cataract surgery is typically an outpatient procedure that lasts about 15-30 minutes.

Here’s a brief overview of the process:

Preparation: Your eye will be numbed with drops or an injection, and a small incision will be made in the cornea.

Lens Removal: The cloudy lens is broken up using ultrasound waves and gently removed.

IOL Implantation: The selected IOL is inserted through the same incision and positioned securely.

Recovery: Most patients experience improved vision within a few days, with complete healing taking about 4-6 weeks.

Why Location Matters: Cataract Surgery in Mumbai

Mumbai is home to some of the best eye care facilities in India, offering state-of-the-art technology and experienced surgeons. Many hospitals in Mumbai provide personalized IOL consultations, ensuring patients receive lenses tailored to their unique needs. If you’re considering cataract surgery in Mumbai, research the options carefully and consult with a reputed ophthalmologist to make an informed decision.

Frequently Asked Questions (FAQs)

Can IOLs be customized for both eyes? Yes, some patients opt for monovision correction, where one eye is fitted with an IOL for distance vision and the other for near vision

Are there any risks associated with IOLs? While IOLs are generally safe, complications like infection, glare, or lens displacement are rare but possible. Choose an experienced surgeon to minimize risks.

Do IOLs last a lifetime? Yes, IOLs are designed to be permanent and do not degrade over time.

Conclusion

Intraocular lenses (IOLs) play a pivotal role in cataract surgery, transforming lives by restoring clear vision. The key to a successful outcome lies in choosing the right IOL that aligns with your lifestyle, visual goals, and medical history. With a range of advanced lenses available, patients today have more options than ever to achieve optimal vision.

For those considering cataract surgery, consulting with an expert surgeon and exploring the latest IOL technologies can ensure a smooth and satisfying experience. Whether you prioritize budget, lifestyle, or specific vision needs, there’s an IOL designed just for you.

[karingottschalk]

Cosina's Voigtländer Manual Prime Lenses for Fujifilm X-Mount Cameras Are Getting More Interesting With Two More Coming Soon, 27mm f/2.0 & 35mm f/0.9

[atplblog]

Price: [price_with_discount] (as of [price_update_date] - Details) [ad_1] Product Description 2X optical zoom with 60mm telephoto lens Our 60mm Telephoto lens is a game-changer, offering 2x optical zoom for capturing breathtaking shots of distant objects. Not just for long-range shots, this lens is a portrait powerhouse. Experience the crisp details and stunning clarity it brings to your portrait photography premium grade Aluminum alloy build Crafted with precision, SIGNI One Lenses are meticulously carved from premium grade Aluminium Alloy and feature multi-coated aspherical glass. Say goodbye to unwanted reflections and annoying light flares. natural cinematic blur for videos Signi one 60mm lens is renowned for its ability to capture stunning details while delivering a delightful depth of field effect. In the realm of photography, there exists a captivating phenomenon known as the natural blur. It is an artful rendering of the out-of-focus areas in an image, which adds depth, dimension, and a sense of ethereal beauty. When combined with the powerful capabilities of a Signi telephoto 60mm lens, this natural blur becomes even more mesmerizing, inviting you to explore the wonders of the world through your camera lens. capture stunning bokeh-filled moments In the realm of mobile photography, the SIGNI 60mm telephoto lens stands out as a powerful tool for bokeh enthusiasts. Its versatility, combined with the convenience of mobile photography, empowers you to capture stunning bokeh-filled moments on the go. Step into a world where the background fades into a dreamy haze, while your subject takes center stage with striking clarity. The Signi one 60mm lens creates a beautiful shallow depth of field, allowing you to achieve that sought-after bokeh effect with ease phone camera 60 mm telephoto lens

Bokeh with Signi 60mm Product Dimensions ‏ : ‎ 10 x 5 x 5 cm; 310 g Date First Available ‏ : ‎ 15 November 2019 Manufacturer ‏ : ‎ SKYVIK TECHNOLOGIES ASIN ‏ : ‎ B07RX4YNJ7 Item model number ‏ : ‎ CL-TP60 Country of Origin ‏ : ‎ China Manufacturer ‏ : ‎ SKYVIK TECHNOLOGIES, SKYVIK TECHNOLOGIES 18001238830 Packer ‏ : ‎ SKYVIK TECHNOLOGIES 18001238830 Importer ‏ : ‎ SKYVIK TECHNOLOGIES 18001238830 Item Weight ‏ : ‎ 310 g Item Dimensions LxWxH ‏ : ‎ 10 x 5 x 5 Centimeters Included Components ‏ : ‎ Lens Generic Name ‏ : ‎ Camera lens SIGNI One Lenses- Best lenses for Mobiles ever made to get the maximum out of of your mobile camera 60mm Telephoto lens- Gives 2x Optical zoom for taking distant object shots. Telephoto lens is also known for Taking portrait shots, 60mm Telephoto lens captures portrait with crisp details SIGNI One Lenses are carved from premium grade Aluminium Alloy and multi Coated Aspherical glass to reduce reflections and light flares. Universal Detachable clip with Soft rubber ensures your device is free from scratches. What you Get: SKYVIK SIGNI One 60mm Telephoto Lens, Premium Carrying case, Cleaning Cloth, Pouch, Universal Clip, SKYVIK Worry-free 12 months Warranty & Friendly Customer Support. Compatible with all devices EXCEPT following OnePlus 8 pro, vivo s1 pro, vivo v15 pro, Vivo v17 pro, Mi 10i & Poco X2. [ad_2]

[kimslabellabaskets]

Check out this listing I just added to my Poshmark closet: TAHARI WOMEN'S PREMIUM READING GLASSES +2.00 - ANIMAL PRINT CAT EYE FRAME.

[vrwaved]

📖✍Delve into the World of Oculus Quest 2 Lenses |VR WAVE📖✍

The Oculus Quest 2 has transformed the virtual reality landscape, providing an immersive experience that appeals to gamers, educators, and tech enthusiasts alike. A crucial component of this experience lies in its lenses, which play a significant role in delivering high-quality visuals and comfort.

👉✨Understanding Oculus Quest 2 Lenses

The lenses in the Oculus Quest 2 Lenses designed to optimize the visual experience while minimizing eye strain. Here’s what makes them stand out:

Key Features

Aspheric Lens Design: The lenses use an aspheric design that helps reduce distortion, providing a clearer image across the entire field of view.

Adjustable IPD: The interpupillary distance (IPD) can be adjusted to accommodate different eye distances, ensuring that every user can achieve a comfortable and focused view.

Anti-Reflective Coating: This coating reduces glare and enhances color accuracy, making the virtual environment more vibrant.

👉✨Benefits of Quality Lenses

The right lenses can significantly enhance your VR experience. Here are some benefits:

Improved Visual Clarity: Clearer images enhance immersion, allowing users to engage deeply with virtual environments.

Reduced Eye Fatigue: Proper lens design minimizes strain, enabling longer play sessions without discomfort.

Enhanced Depth Perception: High-quality optics improve spatial awareness, crucial for navigating 3D spaces.

👉✨Caring for Your Oculus Quest 2 Lenses

Maintaining the quality of your lenses is essential for longevity and performance. Here are some tips:

Keep Them Clean: Use a microfiber cloth to gently wipe the lenses, avoiding scratches.

Store Properly: When not in use, store the headset in a protective case to prevent dust accumulation.

Avoid Direct Sunlight: Prolonged exposure can damage the lenses, so store the device in a cool, shaded area.

In summary, the lenses of the Oculus Quest 2 are vital for delivering an immersive and enjoyable VR experience. Understanding their features and benefits can help you make the most out of your virtual adventures.