The projector will give your walls a colorful galaxy pattern with the multi-color LED lights inside. Use the remote control to change colors, light modes, or to ...

Laser Aspheric Lens: Our laser aspheric lens is meticulously designed to eliminate almost all spherical aberration. With a diameter of 75 mm and a thickness of 35.5 mm, this lens is crafted from high-quality H-K9L material, ensuring exceptional clarity and durability for a wide range of laser applications.

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Laser optics includes all the optical elements and optical systems used within lasers or for manipulating—or transmitting—laser light. Laser optics components have more stringent requirements on surface quality and coating compared to standard imaging optics. Surface quality must be high in sensitive laser applications, especially for laser mirrors and prisms. Optical losses must be minimized. Components must have high laser damage thresholds, especially if they are to be used with high-energy pulsed lasers such as Q-switched high-power lasers.

A laser line filter is a narrow bandpass filter that effectively rejects all unwanted out-of-band radiation and ambient light while transmitting only a specific spectral band. They can be used to increase image contrast in laser-based imaging applications or to prevent signal distortion in laser measurement devices. Shanghai Optics produces laser line optical filters covering laser wavelengths from UV to visible to infrared light. Laser filters feature ultrahigh transmission (T > 90%) at laser wavelengths and greater optical density (OD > 5) in the blocking regions.

Unsere Beratung ist unser größtes Unterscheidungsmerkmal, denn eine Baufinanzierung ist mehr als nur den Zinssatz vergleichen. ... Deshalb sind wir persönlich für ...

There's lots of different anti-spy gadgets on the market, but many are the same gadget rebranded by different companies. I bought one of the most popular options I could find, which is a three-in-one camera finder, RF detector scanner, and magnetic field scanner for under $50. The aim was to see if, well, it would do anything.

Is it a professional counter-surveillance device? No, definitely not (if you want a pro tool, you need something like the DiscoverIt DefCon DD1206). Is this 100% guaranteed to pick up cameras and bugs? No. Is it something that might give people traveling peace of mind? Yes. Is it an interesting gadget for hobbyists or educators? Yes.

This gadget claims to be able to do a lot of things. It can detect 1.2G/2.4G/5.8G wireless cameras, stealth miniature cameras, wireless audio bugs, GSM/CDMA/DECT cellular audio video bugging devices, unwanted GPS trackers, and other bug devices and bug transmitters. The specs say it can pick up RF signals in the frequency of 1MHz to to 8GHz.

Our laser line non-polarizing plate beamsplitters are designed to split laser beams 50/50 at a 45° angle of incidence. The beamsplitters exhibit almost no absorption, and the transmission/reflection ratio (50/50) is insensitive to the input beam polarization state. The high laser damage thresholds make the beamsplitters suitable for demanding laser applications. We manufacture laser line non-polarizing plate beamsplitters with 12.5 mm and 25 mm diameters, as well as a 50 mm square variant.

A laser polarizing beamsplitter cube consists of a pair of high-precision right-angle prisms that are cemented together with a dielectric coating on one of the two diagonal surfaces for splitting a randomly polarized laser beam. Laser polarizing beamsplitter cubes transmit p-polarized light and reflect s-polarized light. We offer a large selection of laser polarizing beamsplitter cubes, optimized for various wavelengths and laser types.

One downside of the device is that you do need to be looking at the lens within a cone of about 15 degrees from the center of the lens to see it clearly. This issue means that if a camera lens is well hidden, you must move around a lot. But once you see that flash of red, you can investigate further.

Laser optics can be made of a variety of substrates, including BK7, H-K9L, Sapphire, UV-grade fused silica, IR-grade fused silica, calcium fluoride (CaF2), magnesium fluoride (MgF2), zinc selenide (ZnSe), zinc sulfide (ZnS), gallium arsenide (GaAs), germanium (Ge), and silicon (Si). Dielectric coatings are often used to improve mirror reflectivity for both S and P polarizations. For most laser applications, filter transmission or reflectance over a very narrow band (the laser line width) is key, and both the substrates and coatings must be chosen carefully to improve the optical performance of the laser-based devices. Ultrashort pulse lasers are the exception; they have a large spectral bandwidth and require lenses and filters with broad transmission ranges.

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Although we offer a wide range of off-the-shelf optics products, we are also able to design and manufacture custom optical components, including laser lenses, filters, and beamsplitters according to your exact specifications. Our in-house design and manufacturing capabilities allow us to quickly deliver optical solutions that best fit your application. With over fifty-five years of experience as a designer and manufacturer of high-quality optical products, we ensure the designs meet your requirements, and your project runs smoothly from design to prototype to volume production as intended.

Room 609, 6/F, Global Gateway Tower, No.63 Wing Hong Street, Cheung Sha Wan, Kowloon, Hong Kong +852-54993705 info@shanghai-optics.com

That said, I'm not sure how useful this device would be for detecting something attached to a vehicle. There are many places to stash a transmitter on a vehicle, and the detect range of this tracker isn't all that huge, and you do get a lot of false positives when prodding the probe into crevices.

However, the camera finder is really good, and the gadget itself is interesting and actually does what it claims to do. So with that in mind, and the fact that you can get one for under $50, there's no harm in picking up an anti-spy camera finder and bug detector.

Also, 'sweeping a room' is not like it is in the movies. It's going to take a few minutes, and you're going to still be getting false positives from charger bricks, wiring in the walls, and a bunch of other random blips.

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Our laser lenses are precision lenses designed for use in laser-based devices for applications such as laser illumination, laser collimation, and laser scanning. They can also be used for laser line generation, laser tracking, laser cutting, laser welding, laser dimensioning, and laser processing. Our full catalog of high-quality laser lenses includes both spherical and aspherical lenses, as well as Axicon lenses, Powell lenses, and cylindrical lenses. BK7, H-K9L, Sapphire, UV-grade fused silica, IR-grade fused silica, calcium fluoride (CaF2), magnesium fluoride (MgF2), zinc selenide (ZnSe), zinc sulfide (ZnS), gallium arsenide (GaAs), germanium (Ge), and silicon (Si) are some of our many substrate choices.

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Unfortunately, so much around us in our everyday lives is electrically noisy. As a result, you do get a lot of false positives. If you're aware of this issue, then you can search smart, and minimize the impact of false positives.

This camera is ideal for those looking for a simple camera with disposable camera aesthetics (but is reusable). Please note that as this camera does not ...

Shanghai Optics produces BBO nonlinear crystals using flux technology. These crystals offer broad transparency from 188 nm to 5.2 µm and exceptional phase matching across most of this range. With high power non-linearity, especially in the UV range, and a robust damage threshold of 750 MW/cm² at 1064 nm, BBO crystals excel in various nonlinear parametric applications and high-intensity laser operations.

I've tested this feature extensively with commonplace, real-world devices such as routers and smartphones, with "hidden transmitters," and signal generators, and I've come away with the conclusion that it works well and has quite a decent range, but I'm not sure how useful it is.

Nd: YAG Crystals is a renowned laser crystal vital in various laser applications across industries like industrial, medical, military, and scientific fields. Shanghai Optics provides high-quality large-diameter Nd: YAG Crystals, ensuring precise performance tailored to customer requirements through rigorous crystal growth and measurement processes.

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The first thing I was interested in was how the camera finder works. It turns out that, along with your detector, you're going to need your eye -- because the device works by using a ring of red LEDs to shine out, and a lens you look through shows up camera lenses as bright red dots.

I really don't want to fan the flames of paranoia here. This is a solution to a very rare problem. It also takes a bit of time to become proficient in the use of this detector, and beyond the camera finder, I think the value of this tool is small.

More recently, I've noticed that social media is awash with ads for these things. But do anti-spy devices work, and do you need one? The only way to answer this question is to try one out.

In fact, lenses will reflect and give away their position much better than the image above can capture. From afar -- and I'm talking 12 to 15 feet away -- you see a red dot. As you get closer, you can see the ring of LEDs reflected in the lens.

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Shanghai Optics manufactures a wide range of high-precision laser optics. Our state-of-the-art equipment allows us to manufacture high-quality optics components that perform consistently under even the most demanding conditions and are suitable for use in CO2 lasers, high-power fiber lasers, solid-state lasers, and laser diodes. Our line of laser optics includes laser lenses, laser line filters, prism mirrors, and laser line beamsplitters.

Alpha Industrial Park, Tu Thon Village, Ly Thuong Kiet Commune, Yen My District, Hung Yen Province Vietnam 17721 +84 221-730-8668 rfqvn@shanghai-optics.com

ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing.

The other downside of the device is that you do have to rely on your eyes, and you need to look for the cameras. There's nothing magic or automatic about this detector. But the device works really well.

Then there's the issue that surveillance devices don't necessarily transmit all the time. In fact, to save on power, most will either record locally or be triggered to come on.

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2024426 — A focal length is a distance from the center of the lens (principal point) to the image sensor, and this is an important value that characterizes a lens.

As cameras and listening devices have become smaller and more affordable, there's a growing fear that this technology could be used to spy on us and our families. This fear, stoked by high-profile news stories, has generated a market for anti-spy devices.

Next up, I tested the device's ability to detect magnetic fields. This feature is sometimes referred to as a "GPS tracker detector" -- and the idea here is that GPS trackers will be attached to vehicles using magnets. Again, I've tested this with all sorts of magnets, from super strong to fridge magnets, and it detects them.

2024126 — investigation". Without this we will never realise the performance gains promised by foveated rendering. DCS ... quad-views-for-vr-rend...