To ensure that your customers can easily assemble, install and use your product, an on-site assembly check is vital. The inspector will put together the product following the assembly instructions, with regular tools or tools that come with the product when purchased.

Standard lux level chart

Optical instruments such as telescopes are not composed of a single lens. Instead, multiple lenses are assembled together to produce the desired optical effect. In the next post, we will be discussing an example of an assembled system and specifications when designing lenses.

Without fertilizer, a crucial agricultural commodity, half the world's population would not be here today. It has allowe...

We have experts worldwide that can test and report on indoor lights, outdoor lights, chandeliers, table lamps, floor lamps, work lamps, and lighting controls, as well as conventional bulbs and LED bulbs.

Label requirements for electronic products should include model numbers voltage information, safety warnings, and regulatory compliance symbols.These labels should be tested with a rub test.

The value of coal is determined by the demand but also by the quality - Quality that can be inspected! Coal is a versati...

The function of an endurance test is to safety assess and observe the functional performance of lighting products over an extensive period of time. The light should be left on at its highest setting for four hours straight while the inspector periodically observes it for any malfunctions.

If however, the object is at exactly the distance of two times the focal length (u = 2f), then the image focal length is exactly twice the focal length (v = 2f). The image is still upside down, but is the same size as the object. Scanners and printers are primary examples of this application.

Brightness, color or efficiency standards are tested with an integrating sphere test that can measure the lighting source using common metrics. This test requires an integrating sphere system with a spectroradiometer for spectral mismatch corrections and computing software. Most lighting manufacturers should have both the equipment and related software available on site already, as they’re essential for LED lighting manufacturing. Reporting is done compared to your spec.

If you're in the market for a boat, it's important to know what to look for during an inspection. A boat inspection can ...

A drop test is necessary for shelf-mounted luminaires under the UL 153 standard. It’s also required for luminaires intended for use in hazardous conditions under the UL 844 standard. The inspector drops a shelf-mounted unit from a height of 3 feet (91.4 cm) onto tissue paper covering a nominal 1/2 inch (12.7 mm) thick, knot-free softwood sheet that rests on concrete flooring.

A fatigue test is done in order to check how well a functional part will do after being used multiple times. The inspector will use the part as it is meant to be used, anywhere from 20 to 50 times depending on time limits.

Every case above has been under the assumption that a convex lens is used. For concave lenses, no matter where you place the object, the image will always be smaller than the actual object. For people with nearsightedness, their glasses are concave lenses. The image through their glasses will always be smaller than the object itself.

If an object is less than a focal length away from the lens (u < f), no real image exists. However, a virtual image does exist and is larger than the actual object. An example of this phenomenon is a magnifying glass which enlarges the image to look bigger than the object itself.

Torque testing is a type of quality assurance test used for products with rotating parts, such as screws and bolts. It measures the rotational force required to turn these parts and helps identify any potential quality issues with them.

The inspector will check the product’s functions, such as turning the light on and off, checking proper illumination, and confirming the light dims properly (if relevant), among other things. The inspector should report any functional issues observed during testing, as well as any deviances from your instruction manual and specifications.

Qualityinspection lighting

When the object is at a length less than 2 focal lengths but greater than a focal length (f < u < 2f), the image focal length is greater than 2 focal lengths (v > 2f). While the image is upside down, it is larger than the original object. This property is utilized by projectors in displaying an image much larger than the original object.

The hi-potential test, or dielectric voltage-withstand test, measures the electrical current coursing through a product's insulation. By conducting this type of test, you can discover any issues with current leakage or dielectric breakdowns. To do so, simply have an inspector check for signs of either Current Leakage or Dielectric Breakdowns.

Electromagnetic compatibility (EMC) lighting testing helps ensure your LED light doesn't emit excessive electromagnetic interference during use. High electromagnetic interference can disrupt or damage other electronics.

Visualinspection lightingstandards

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

There is also the case where the object is exactly a focal length away from the lens (u = f). As light runs parallel through the lens at this distance, no image or virtual image exists.

Lux level standardsforvisualinspection

Focal length is important not just in terms of positive and negative. For convex lenses, different focal lengths can have drastically different images. If an object (u) is at a distance greater than two times its focal length (2f), then its image focal length (v) is between f and 2f (written as f < v < 2f). The image will appear upside down and smaller than the object. This is the case for cameras, of which are a primary application of this property.

A certified component data form (CDF) is a table of critical components and your approved manufacturers of those components that you or your supplier should provide the inspector. The inspector can compare the components in your actual product against the CDF and report any non-conformities.

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