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High power microscopes usually have 10x eyepieces lenses, so there is only one column above the 4x objective. If you wanted to look at an amoeba that is 150µm ...

eSource Optics / PMB 126, 1225 Providence Rd, Whitinsville, MA 01588        VUV-UV Optical Filters & Mirrors/ VUV-UV Windows/Lenses & Prisms

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Purchased the new adapter to extend my lee 100 system across a new wide angle lens. A superb filter system for all landscape (and other) photography.

Explore the LEE range of Neutral Density (ND) filters. ND filters work by reducing the amount of light that enters your lens, without affecting the colours or overall balance of your composition. Whether you want to capture silky smooth waterfalls, create motion blur in bustling city streets, or balance the exposure between a bright sky and a darker foreground, our ND filters can help enhance your creative output. Our ND grad filters come in a range of different graduations and can even be stacked on top of each other, or combined with different grads, for even more creative options.

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The field of view (FOV) in an embedded camera refers to the max area at which the camera can capture images. It is typically measured in degrees and can vary ...

Let us see what effects we would expect if we were to shine polarized light through a plate of a birefringent substance. If the polarization is parallel to the ...

(minus cylinder convention). Tolerance on Sphere ... (minus cylinder convention) ... If there is a marking on the spectacle lens indication the intended direction ...

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Read verified reviews for Advanced Coatings Inc, a Waterproofing pro located in Etobicoke, Ontario.

Chromatic aberration is a kind of defect commonly found in simple lens systems caused by a variation in the index of refraction with wavelength. Different ...

Edmund window

Browse our selection of standard and pocket magnifiers at Carolina Biological. Enable your students to examine organisms up close with simple and durable ...

BaF2 window

It is a very well made component of the Lee Filter System. I bought it for use on my new Fujifilm X100VI. It is a perfect fit and it looks great on my camera. It allows me to use the smaller filters which I had previously from another compact camera system. Overall, very happy with my investment.

*Also see our standard Circular Optical Windows  in UV Fused Silica & BK7 Glass Materials   For more information about Optical Windows, refer to our Optics Tutorial page.

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Circular Optical Windows from our Excess Inventory are offered at substantial savings.  Most of our excess Inventory Circular Optical Windows are available as both Laser Quality and Analytical Quality polish designated as LQ (Laser Quality) and AQ (Analytical Quality) per the below specifications.  Circular Optical Windows from our Excess Inventory are available in UV Grade Fused Silica (FS) & BK7 Glass materials*.  Circular Optical Windows are flat polished round optical windows typically used to isolate environments while allowing light to pass relatively unimpeded.   Optical Windows are generally used for view ports or sealing and or protecting other components within an optical assembly, instrument or laser.

A new product line that I have long awaited. Superb clarity and neutrality, and with a density exactly as advertised (verified with a Sekonic spot meter). There is no slippage/creep of the filter in the slots of my first generation LEE holders (an issue I encountered with glass grads from other suppliers). The included padded pouch is nice, although an exterior label indicating which filter is inside would be a welcome addition, to quickly identify the one you want if you have several different filters. Overall an excellent product, and a distinct step up from the resin equivalents. I hope in the future LEE will expand the range of these filters to include soft gradations, and 1 stop densities.

Material : BK7 Glass & UV Grade Fused Silica (FS)      Diameter (Dia = Ø) Tolerance: ±0.25mm Thickness Tolerance: ±0.25mm   Surface Figure*:  LQ = ~L/8 - ~L/10 @ 633 nm nominal                                AQ = ~3-5 waves @ 633 nm nominal Surface Finish:  LQ = ~20-10 to ~40-20 both surfaces                              AQ = 60-40 both surfaces Clear aperture: central 85% Parallelism:  LQ = < 5 arc minutes AQ = < 15 arc minutes  Chamfer: ~ 0.30mm @45 deg. (* Can vary with Thickness)  (LQ = Laser Quality / AQ = Analytical Quality)

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Installation · Open https://pixelink.com/products/software/sdk/ · Download and install Linux SDK · Run "sudo apt install python3-pip" to install pip3, if it is ...

It is a very well made component of the Lee Filter System. I bought it for use on my new Fujifilm X100VI. It is a perfect fit and it looks great on my camera. It allows me to use the smaller filters which I had previously from another compact camera system. Overall, very happy with my investment.

We have great competitive pricing on Slider Micrometer, 1mm/200 Divisions. Shop our quality selection of optical equipment and PPE!

A new product line that I have long awaited. Superb clarity and neutrality, and with a density exactly as advertised (verified with a Sekonic spot meter). There is no slippage/creep of the filter in the slots of my first generation LEE holders (an issue I encountered with glass grads from other suppliers). The included padded pouch is nice, although an exterior label indicating which filter is inside would be a welcome addition, to quickly identify the one you want if you have several different filters. Overall an excellent product, and a distinct step up from the resin equivalents. I hope in the future LEE will expand the range of these filters to include soft gradations, and 1 stop densities.

With exceptional shock and vibration resistance, our ruggedized lenses are ideal for harsh environments. They offer longer life, greater ruggedness and lower ...

Purchased the new adapter to extend my lee 100 system across a new wide angle lens. A superb filter system for all landscape (and other) photography.