SWIRScope

To get even higher magnification out of the Resolv4K, SWIR-capable microscope objectives can be used with the Resolv4K. Additional information on the Navitar Resolv4K high magnification lens system is available on our High Magnification Lens page.

The contents or features within opaque paper and plastic packaging become visible and inspectable when backlit with SWIR lighting.

Although standard visible wavelength glass lenses can be deployed with SWIR cameras, SWIR-specific lenses include optical coatings that enhance the lens capabilities and image quality within the SWIR range.

SWIR refers to the light wavelength range of 900nm to 2,500nm. SWIR light is similar to visible light, in that photons are reflected or absorbed by an object, providing the strong contrast needed for high resolution imaging. Much like visible light cameras, SWIR cameras deliver high resolution images at high frame rates.

Additionally, if you shoot a high-volume of images like for a wedding or action sports, then you may not want 4,000 images at 40 megapixels per photo shoot. When shooting at that rate, it won’t take long to run out of hard drive space.

SWIRmeaning

We provide selected LED and fiber optic lighting, lenses & filters, cameras, sensors, and accessories from the top partners in the industry. Call us at 781-335-5500 to learn more.

Optical System Design – S15. MTF. Joseph A. Shaw – Montana State University. Diffraction-limited MTF for different f/# values http://photo.net/learn/optics/mtf/.

The main difference between mirror and lens is that image forms by reflection, as the light falls on a mirror. In lens, the image is formed by refraction.

A third megapixel myth needs busting before we wrap up, and that has to do with down-sizing your high-res images.  Many people argue that down-sizing your high-res images is not as good as if you simply had a sensor with lower megapixels in the first place.  However if you compare image detail and dynamic range, this is not true.

SWIRsensor

In the following example, the printed opaque plastic bag is backlit at 1450nm and the bag edge, the zipper, and the vacuum seal areas are visible without interference from the printing on the bag. The bag may then be inspected to ensure none of the contents is stuck in the zipper or in the vacuum seal area, which may lead to leaking or spoilage.

Liquids typically absorb SWIR wavelengths and often appear dark, enabling fill-level verification behind plastic labels or within tinted or opaque plastic vials and bottles.

While it’s true that other factors beyond megapixels can compensate for lower megapixel counts, there are situations in which high megapixel counts are necessary.   For example, when sent to print, a 20 MP file can yield an 18″ wide print without any upscaling in Photoshop or other photo editing software. Yet, how often do you print 12″x18″ photographs? For most consumers, the answer is “not often.”

MWIRwavelength

Most images end up online, usually on social media. However, online and social media usage rarely exceeds 2MP. That means the other 18 MP you paid for never really get seen. Even a 4K display can only present 8 MP worth of your photograph.

Applications in the semiconductor industry, such as bonded wafer target imaging, require the use of high magnification optics. Navitar’s Resolv4K modular high magnification lens system is available with special SWIR coatings to permit its use with SWIR Vision Systems cameras. The wafer images shown herein were made with the Navitar Resolv4K lens system with the SWIR coating.

This also applies if you display an image photographed in landscape orientation in a vertical (or portrait orientation) format.  For example, to place a landscape orientated photo in a vertical slideshow format, such as an Instagram reel, a higher megapixel count will work better.

Objectives can be a single lens or mirror, or combinations of several optical elements. They are used in microscopes, binoculars, telescopes, cameras, slide ...

The image above is shot with the 36 megapixel Nikon D800. With this much resolution, there is plenty of room to crop the image and still produce high-quality photos. The example below is a 100% crop sample from the previous image, and as you can see we still have enough detail left to use for either posting on the web or even printing.

Megapixels (MP), which translates to “one million pixels,” dictate how much detail your camera’s sensor can capture.  In digital photography, the number of megapixels in an image refers to the total number of pixels that make up the image. To determine this number, multiply the number of pixels in the width of the image by the number of pixels in the height of the image.

Water is visible at 1,450nm and other SWIR wavelengths, making it appear dark in the acquired image. In produce sorting, bruises, as shown below, appear as dark spots based on the increase in water volume at that location. This capability can also be used in determining whether the item is dry and ready for further processing, such as for grain moisture content, dyed textile moisture, processed particle board moisture content, and for seal/packaging inspection for high-moisture goods.

by J Schulte · 2016 · Cited by 263 — We demonstrate a scheme for nonlinear pulse compression at high average powers based on self-phase modulation in a multi-pass cell using fused silica as the ...

Since liquids and adhesives absorb SWIR wavelengths at varying degrees, based on their chemical composition, additional applications requiring the detection or differentiation of clear liquids or contamination, liquid coating coverage, and clear adhesive presence on surfaces can be addressed.

In silicon wafer inspection, SWIR cameras can see through the wafer. Backside illumination enables alignment mark inspection for bonded wafer pairs and viewing the alignment of bumps between the two bonded wafers. Frontside SWIR illumination can be used to detect micro-cracks and voids that can’t be seen in visible light images.

Another consideration is editing speed.  Let’s consider again the wedding photographer who generates roughly 3,000-5,000 images per wedding.  Even if the difference in editing time equates to a few seconds per image, the workload can increase significantly. If you double or triple the megapixel count, editing time can increase by quite a few hours per week.

Standard factory automation lenses for SWIR imaging are available in a range of focal lengths from our optics partners at Goyo, Navitar, Opto Engineering, SWIR Vision Systems, and others.

Sheer resolution becomes a factor when enlarging and performing extreme crops. For example, because detail is more visible when blowing a photo up to a 20×30 inch canvas versus a 4×6 inch print, having a higher megapixel resolution is important in bringing out more crisp details in your enlargements. Also, if you happen to have a 40 megapixel image, and need to crop 80% of the image, you will still have plenty of detail left for that enlargement.

SWIRcamera

In just 90 seconds, we unravel the mystery behind megapixels to help you determine whether or not you need more of them.

Similarly, if you are an advertising or fashion photographer then ultra high resolution sensors can mean a lot more flexibility in production. Just imagine an editorial photographer taking a single full length portrait, and then being able to create printable crops focusing on the subjects facial expression, dress, wrist, neck jewelry and shoes, all from one shot!

R.J. Wilson, Inc. is offering cameras from SWIR Vision Systems to expand the range of applications that can be addressed using Short Wave Infrared imaging (SWIR). These cameras feature patented CQDTM Sensors based on colloidal quantum dot (CQD) technology, with thin film photodiodes fabricated monolithically on CMOS-based silicon readout arrays. CQD technology reduces the cost per MP of SWIR cameras, compared to those with indium gallium arsenide (InGaAs) sensors.

SWIRvs NIR

In conclusion, while megapixels can act as a helpful indicator of image quality, they represent only one of many factors that determine the quality of a digital image. Other factors, such as lens quality and sensor size, also play a significant role in determining image quality. Whether or not megapixels matter ultimately depends on your intended use for your images. By considering your needs and how you plan to use your images, you can determine the appropriate level of megapixels for your photography.

IRIS USA 10 Pack Small Plastic Hobby Art Craft Supply Organizer Storage Containers with Latching Lid, for Pencil Case, Crayon, Ribbons, Wahi Tape, Beads, ...

SWIR lighting is available in a number of form factors and in specific SWIR wavelengths for back lighting or front lighting from Effilux and Smart Vision Lights.

For your approval; an outré collection of short speculative fictions written with classic Television SF/F anthology programming in mind.

In the world of digital cameras and smartphones, marketers use the term “megapixels” frequently to describe the quality of the images produced by these devices. But what are megapixels exactly, and do they really matter? Megapixels refer to the number of individual pixels that make up an image. The more megapixels, the more detail and resolution the image can have. However, simply having more megapixels doesn’t necessarily mean better image quality. In this article, we’ll dive deeper into the world of megapixels and explore their role in determining the quality of digital images.

Generally speaking, the more megapixels an image has, the higher its resolution and level of detail. This is because a higher number of pixels means that the camera is capable of capturing more information.

In other words, highly proficient photographers that are seeking cameras that can print directly to large format with incredible detail reproduction or provide extreme cropping capabilities can utilize cameras with 30, 50, or even 100 MP.

However, it’s important to note that simply having more megapixels doesn’t necessarily mean that the image will be higher quality. Other factors like lens quality, sensor size, color resolution, dynamic range, and more play a role in determining image quality.

Additionally, the level of detail that can be captured by a high-megapixel camera may not be noticeable unless the image is viewed at a large size. For example, the image below was shot with a 12 megapixel Nikon D700 and the image quality is stunning. One can really see the detail when viewing the image online, as a slideshow, or in 10-20″ prints. For these viewing conditions, the 12MP sensor provides more than enough resolution and allows for a small amount of cropping.

SWIRapplications

When an image is straightened or cropped in post production, resolution is lost.  So, if you crop your images heavily, a higher megapixel count will give you more flexibility.

The image above is taken with a staggering 80 megapixel digital back sensor. Even at just 50% crop, we can still get beautiful details of the model’s face, clothes, and jewelry with enough resolution for a full-page spread publication!

Do we all need $50k cameras that produce 100 MP images? Not exactly. Most cameras feature 20-40 MP these days, and yet most photographers don’t use their camera to its potential. A camera with a 20 MP sensor will only yield 20 MP worth of detail when it is used by a proficient photographer. The means the photographer must understand how to maximize detail and resolution using lighting and other means.

For example, if we compare images from the 16 MP Nikon D4 and the 36 MP D800, with the D800 image re-sized down to 16 MP, we’ll see far more detail in the D800 16 megapixel image.

Photometers. Smart Series. Setting the benchmark for measurement performance and value. Learn More. Conometer 80. Fast viewing angle measurements of displays.

In the example below, the contents within plastic packaging become visible because the SWIR back and front lighting pass through the printed packaging. This is ideal for food packaging to verify the contents are correctly packaged or are present at all.

Compared to the Nikon D800, the Phase One medium format camera has more than twice the megapixels, resulting in an incredible amount of detail saved even after extreme crops.

This is commonly done in spreadsheet form for first order layout of imaging systems. The thick lens equation is derived from Snell's law and ...

SWIR wavelengthrange

SWIR imaging is especially good at imaging through silicon (which appears nearly transparent), checking liquid fill levels in opaque plastic containers with labels, verifying liquid coatings coverage on webs, determining whether clear adhesive has been applied, and viewing the contents of opaque plastic product packaging. SWIR is also used to differentiate between black plastics in recycling operations.

by A Márquez · 2005 · Cited by 22 — Characterization of the retardance of a wave plate to increase the robustness of amplitude-only and phase-only modulations of a liquid crystal display · Full ...

Micro-Sphere Ball Lenses are provided for three wavelength ranges and different focal lengths, with an AR coating or uncoated.

For example, a studio that shoots 150 weddings per year may produce over a million RAW images per year. At 40-50+ megabytes per image, that comes out to 25-30 Terabytes of storage!  Of course, the average shooter may only have to buy one or two extra memory cards and hard drives. Storage needs will vary based on your personal workflow volume.

The bigger debate has to do with ISO performance and re-sizing high-res images. If you want the absolute best low-light performance, should you use a 16 MP sensor or a 36 MP sensor?  Without getting too geeky, suffice it to say that by re-sizing a high-res image, you do indeed gain a considerable amount of low-light performance. At least, you get better noise reduction performance.