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2. High-CRI LED lighting - Wikipedia

   en.wikipedia.org/wiki/High-CRI_LED_lighting

   [citation needed] Light bulbs with a high CRI can be acceptable replacements for incandescent bulbs. Most LED lamps do not have a CRI above 90. For example, the top bulbs listed in the 2016 Consumer Review have a CRI of 80. [3] In 2008, the U.S. Department of Energy created the L Prize to find an incandescent light bulb replacement that met ...

3. Ring flash - Wikipedia

   en.wikipedia.org/wiki/Ring_flash

   An LED-based ring flash. A ring flash is a circular light that is often operated with a camera lens in the center to take photographs. Unlike point light sources, a ring flash can illuminate a subject with minimal shadows by closely and evenly surrounding the optical axis of the camera lens.

4. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

5. Köhler illumination - Wikipedia

   en.wikipedia.org/wiki/Köhler_illumination

   Köhler illumination is a method of specimen illumination used for transmitted and reflected light (trans- and epi-illuminated) optical microscopy.Köhler illumination acts to generate an even illumination of the sample and ensures that an image of the illumination source (for example a halogen lamp filament) is not visible in the resulting image.

6. Bright-field microscopy - Wikipedia

   en.wikipedia.org/wiki/Bright-field_microscopy

   The light path of a bright-field microscope is extremely simple; no additional components are required beyond the normal light-microscope setup. The light path begins at the illuminator or the light source on the base of the microscope. Often a halogen lamp is used. The light travels through the objective lens into the ocular lens, through ...

7. Consumer Reports - Wikipedia

   en.wikipedia.org/wiki/Consumer_Reports

   Consumer Reports states that PriceGrabber places the ads and pays a percentage of referral fees to CR, [25] who has no direct relationship with the retailers. [26] Consumer Reports publishes reviews of its business partner and recommends it in at least one case. [27]