Knight Optical provides a wide range of ball and half ball lenses which are ideal for endoscopy and fibre communications. We have a variety of material options available including quartz, sapphire, cubic zirconia, ruby, BK7 and other optical glass, fused silica, borosilicate, and many more. Our stock catalogue consists of 0.4 mm to 10 mm diameter ball lenses, but custom dimensions are available up to 100 mm.
Shanghai Optics offers custom-made ball lenses. Please contact us for manufacturing limit or custom specifications. We can offer balls lenses e.g. with a diameter tolerance of ±50 μm, scratch & dig 20/10, surface quality 40-20, and with
Ball Lenses are commonly used to improve signal quality in fiber coupling applications, or for use in endoscopy or bar code scanning applications. Our ball lenses feature short back focal lengths to minimize the distance needed from the ball lens to the optical fiber. Edmund Optics offers a variety of ball lenses in a range of substrates for performance in the ultraviolet to the NIR. Half-ball lenses are also available to ease mounting or system integration.
Hangzhou Shalom EO provides ball lenses and half ball lenses made from various substrate materials including sapphire, ruby, BK7, UV fused silica, high index glass, and germanium, ZnSe, ZnS with AR coating. Our ball lenses and half ball lenses are ideal for applications such as fiber communications, endoscopy and microscopy.
Ball lenses are, as the name suggests, completely spherical lenses most commonly used to couple light in and out of fibres. Knight Optical supplies a range of stock ball lenses as well as bespoke designs to your own specifications. Our stock ball lenses offered in quartz have excellent UV and IR transmission between 185nm to 2000+nm, while our sapphire lens have a higher refractive index, allowing a very short fall back length to better facilitate fibre coupling. We can supply ball lens in a range of alternative materials and diameters. We are able to supply high precision grade 3 ball lenses, mid-range grade 25 ball lenses and commercial grade 100 ball lenses offering all grades to suit any application.
TECHSPEC N-BK7 Ball Lenses are glass spheres commonly used in fiber optic applications. Ball lenses are ideal for focusing light into optical fibers, or for fiber coupling. Note: Sphericity is the deviation of the ball lens from a perfect sphere.
Crystal ball photography is a great way to get more creative with your photos. But what are the best options? And where do you get them? We cover everything you need to know! Our Top Pick Original Lensball Pro 80mm Capture stunning images with this 80mm spherical lens, perfect for creating unique and eye-catching photos. Shop Offers ×Original Lensball Pro 80mm Deals(second hand)Check Price(second hand)Check PriceBuy Now!If you buy a product through one of our referral links we will earn a commission (without costing you anything).Prices last updated on .
Crystal ball photography has been around a long time. A glass spherical ball acts as a lens optic. In some ways, all photography uses a glass ball, because refraction is also used in lenses to render an image.
Refraction works based on light bending when it passes through an object of denser mass. When that object is spherical, the image in the ball gets flipped 180 degrees. How you handle this inverted image will have a significant impact on the success or failure of your crystal ball photo. One method is to use post-processing to flip the picture, though there are other strategies.
The two Lensball websites listed above sell their balls in two sizes. These are 60 and 80mm in diameter. They have, of course, done their research here. People want something not too big, definitely not too heavy, and excellent image quality. An 80mm size is a good option for most photographers.
One of the main justifications given for the higher price tag is the quality of the glass. This glass is the highest quality K9, used for various optics and not just crystal balls. Not all glass balls are for photography.
The better quality glass will produce a crisper and sharper image, so do you want to pay for that extra quality? Even with the better quality glass, you are at risk of scratches on your ball though. To this end, Lensball provides a pouch, which will give the ball some protection.
Lensballs trump card is the community and sense of investment they have formed. Anyone with a crystal ball can post on their site, but Lensball customers are the most invested and keen to learn. Through postcard images and competitions, they inspire people to use their glass spheres.
There were always going to be products to supplement the Lensball. These make it easier to deal with the compositional challenges of Lensball photography. The main one here is how to place your ball without it rolling away? The solution is a unique tripod head that you can use to place your ball on. This item is useful and works very well.
Again there are alternatives, like placing the ball on the top of the tripod, with the tripod head removed. The circular metal will hold the ball in place as well as the Lensball holder will. There are also Lensball holders made of glass available. These will look more pleasing in a photo than the wooden holders sold with a glass ball.
These are great products, but they also take something away. One of the significant challenges of Lensball photography is developing an eye for a location. The ball has to sit, have a great background, a nice foreground and not roll away.
Smartphone users dominate the mass market. To gain traction with a broader customer base, the Lensball needs to work for smartphone photos. One of the main advantages of DSLR and mirrorless cameras is the ability to change the lens to specialist macro lenses.
If you are photographing from a high location and the ball falls over the edge, it could cause a great deal of damage. Even if the fall is not that high, you could damage your ball from the impact of a fall. It will be more challenging to use the ball to get high-quality images, with a dent mark somewhere on its surface.
Is the Lensball worth the extra cash? The Lensball case is useful, and the quality of glass also means the image in the ball will be crisper. The branding and support from the community of Lensball photographers are fantastic. But those with regular crystal balls can contribute to these groups as well.
Sapphire and Ruby ball lenses are both made from Al203. Ruby or Ruby-Doped sapphire owes its red color to traces of chromium oxide (chromium content for ruby balls is typically >0.5%). While their physical and chemical properties are basically the same, their optical properties are somewhat different. Sapphire has superior optical transmission qualities. Ruby Balls are easier to see and therefore easier to handle for physical applications.
A Lensball is basically a glass sphere or crystal ball that photographers shoot through to create a fisheye lens look, but for about a fraction of the price. By shooting through the glass ball it becomes a natural frame for your subject.
But keep in mind, the scene will be an upside down image inside the ball. The ball uses something called refraction to bend the light passing through. The result is a mini version of your scene within the ball because the Lensball has a denser mass than air.
Refraction happens when light passes through an object of denser mass, as the light passes through, it becomes bent. This is why Lensballs or a crystal ball works so well at refraction. They are made from high quality glass that easily lets light pass through and keeps your image sharp and in focus.
You may not know it, but you are already a refraction photographer. To prove this, simply take off the lens front and rear caps. Look through your lens and you will see the image is upside down and projected through the concave glass just like crystal ball photography.
Some genius rebranded a crystal ball for photographers and the rest is history. You can buy either and capture these types of shots and scenes. When it comes to the world of camera lenses, lens balls and crystal balls are just much cheaper versions of wide angle and fisheye lenses. Lensball range from 20 dollars to 100 where camera lenses can be up in the 1000s. 781b155fdc