- click above -
Red LED Christmas Lights
Bright Cherry Red LEDs,
Bring a Festive Spirit to your Darkroom!
| Central District Dental Society |
| - Red LED Darkroom Safelights - - click above - Red LED Christmas Lights Bright Cherry Red LEDs, Bring a Festive Spirit to your Darkroom! |
| UNedited
Notes for CDDS presentation 9-28-06 |
http://www.hollidaydental.com/cdds/news/Safelight.htm http://www.hollidaydental.com/cdds/news/LED_StringPromo.gif A less expensive source for darkroom safelight LEDs. Festive Holliday Lights are brighter and less expensive than the Kodak LED Safelight which is the best available Dental Safelight. Decoratively arranged by wrapping around the old safelight housing, the "Hot Chilli Peppers" chandelier provides enough illumination to read the newspaper. http://www.hollidaydental.com/cdds/news/LED_Arrangement.gif http://www.hollidaydental.com/cdds/news/LED_SpecsColors.gif http://noveltylights.com/ Ordered from: https://ssl.adhost.com/noveltylights/merchant.cfm?pid=302&step=4 Red LED Light Sets Our Super Bright Red LED Strawberry Christmas lights will last 100,000 hours and will cost 90% less to run that traditional Christmas lights. Each set is 36' long and has 70 LED's. Our LED’s (Light emitting diodes) are the new wave of light technology. LED Christmas Lights are basically tiny light bulbs that, unlike ordinary incandescent mini bulbs, have no filament. Because they have no filament, they require less energy, produce less heat, and last a great deal longer. Because the LED’s energy is not being wasted heating a filament and a greater percentage of power is going directly to generate light, making them much brighter than traditional bulbs. Furthermore, the bulb is constructed out of heavy plastic and therefore remarkably durable. Another added feature is an AC/DC converter built into every set of mini lights, we do this because LED’s will Burn 30% brighter on DC (direct current) power than A/C (alternating current) and will not have any flicker. The AC/DC converter is patented technology and is unique to our Novelty Lights, Inc brand of LED Christmas mini lights. Each set is UL Listed for indoor/outdoor use and you can connect up to 3 set end-to-end. Shipping weight 1 lb Price: $14.40 / 1 Product Code: LED70-RE http://www.theledlight.com/5mmcoloredleds.html http://ledsupply.com/tle4w.php http://www.kodak.com/global/en/consumer/products/techInfo/k4/k4Facts.shtml Important Facts About Safelights No safelight provides completely safe exposure for an indefinite period of time. Safelight filters are designed for specific types of paper and film. Safelight filters fade with use. Poor safelight conditions can produce a loss in photographic quality before actual fogging is visible. Many photographic materials require handling in TOTAL darkness. Therefore, you should · · · In photography, the term "safelight" describes darkroom illumination that does not cause a visible change to light-sensitive material when it is correctly handled and processed. The word "safe" is relative. Most sensitized materials will be affected if you expose them to safelight illumination for an extended period of time. Because photographic materials vary in speed and sensitivity to different colors of light, the recommended bulb wattages and colors of safelight filters also vary. Safelight illumination will fog color films and papers; color print and transparency materials; most panchromatic black-and-white films (films that are sensitive to blue, green, and red light); and high-speed infrared films. You must handle these materials in total darkness. Ideally, safelight filters should transmit only light that is outside the color-sensitivity (wavelength) range of the photographic materials they're recommended for. Safelight filters recommended by Kodak provide maximum transmission of those colors that the paper or film emulsion has relatively low sensitivity to. However, the color sensitivity of most emulsions does not end abruptly at a par ticular wavelength in the spectrum--most emulsions are somewhat sensitive to colors outside the intended range. This means that most papers and films have some sensitivity even to the colors of light transmitted by the recommended safelight filters. Therefore, always minimize the exposure of photographic materials to safelight illumination. A safelight has three basic parts: The lamp housing. This holds the bulb and the filter, and keeps the white light emitted by the bulb from escaping. The safelight filter. This absorbs light of some colors and transmits light of others to varying degrees. The bulb. The recommended wattage is determined by the sensitivity of a particular material, the transmission characteristics of the filter, the type of illumination the lamp housing provides -- spot (direct) vs general (indirect) -- and the distance between the safelight and the area where you handle the material. KODAK Safelight Lamps contains descriptions of a number of KODAK Safelight Lamps and appropriate uses for the different types. The Safelight Recommendations table lists typical sensitized products and the safelight filters recommended for use with them. The table also shows the bulb-wattage recommendation for each application. See the paper or film package for safelight recommendations for specific materials. Be sure to follow the recommendations for both the wattage of the bulb and the minimum distance between the lamp and the photographic material. The "safest" color safelight filter for a particular material is not always the recommended one. For example, a red safelight filter often has less effect on photographic papers than the amber filter listed in the table. However, most workers find that they can judge print density or perform other functions better under an amber light. (So, although it is a slight compromise in protecting the paper from fogging, an amber filter improves working conditions.) The apparent color of a safelight filter is only a partial indication of its transmission characteristics. Colored bulbs or other improvised safelights may appear to be the right color, but they may actually emit light (or other forms of radiant energy) that will fog a photographic emulsion. KODAK Safelight Filters are made to precise light-transmission and absorption standards that relate to the spectral sensitivities of photographic materials. Safelight filters gradually fade with use. This means that they transmit more and more light of the colors that they absorb when they are new. You should plan to periodically change safelight filters. For example, if you use safelight lamps for 8 to 12 hours a day, you may need to change the filters every three months. Bulbs eventually blacken and produce less light. To keep the illumination level consistent, periodically change bulbs. Noting the replacement dates on a sticker on the safelight housing will help you keep track of bulb and filter changes. We recommend that you change bulbs before running safelight tests. How Safe Is Your Safelight? Menu Important Facts About Safelights | Total-Darkness Materials | Safelight Recommendations | Placement Of Safelight Lamps | Safelight Precautions | Testing Your Safelight Conditions | KODAK Safelight Lamps | More Information KODAK Safelight Lamps http://www.kodak.com/global/en/consumer/products/techInfo/k4/k4KodakSafelites.shtml http://www.kodak.com/global/en/health/dental/film/safelightLamps.jhtml?pq-path=2413 KODAK LED Safelight Designed to replace conventional filtered incandescent safelights, it is the latest in lighting technology and offers more efficient darkroom light so you can see better and work more comfortably. It's also easy to install: just screw it into a standard light bulb socket and you're ready to get to work. KODAK Adjustable Safelight Lamp, Model B This bracket-type lamp with a double-swiveled shank provides direct or indirect illumination. It comes with a 6-foot, 3-wire grounded cord set and bracket. This adjustable lamp holds a 5-1/2 inch circular safelight filter (not included). KODAK Darkroom Lamp A compact, beehive-shaped shell, equipped with a screw socket cap that fits an ordinary socket or electric drop-cord. Uses a 5 1/2 inch circular safelight filter. Patterson Item #: 313-9003 Description: led safelight Manufacturer: EASTMAN KODAK CO Mfg Item#: 852-6444 1 @ 168.50 / EA https://www.pattersondental.com/app.aspx?cmd=get_item&id=168214 http://www.kodakdental.com/documentation/film/N-413ExposProcDent.pdf DARKROOM TIP Do you have a light leak? Is your safelight too bright? Take this simple test in your darkroom: With the door closed, regular lights out and safelight on, remove film from covering and place raw, unexposed film on the countertop. Place a coin on top of the film, wait two minutes and then process the film. If you see the coin outline on the processed film, your darkroom is too bright. Maintain an adequate darkroom A well-equipped and properly configured darkroom helps assure high-quality radiographic images. To get your darkroom into shape, be sure to do the following: • Eliminate light leaks. • Install proper safelighting. • Use quality processing chemicals. • Regulate water temperature. Eliminate light leaks Light leaks cause fogging of films during processing, with substantial loss in detail and contrast. To detect light leaks: 1. Close and lock door. 2. Turn off all lights. 3. Let your eyes adjust to the dark for at least five minutes. 4. Look for light leaks. 5. Mark light leaks with chalk. To eliminate light leaks: • Seal light leaks with black masking tape or weatherstripping. • Use double doors or heavy curtains. Page 9 8 Install an adequate safelight A proper safelight provides ample lighting during processing, yet it is safe for sensitive film. Safelighting that is too bright will fog films. Kodak manufactures two types of safelights: LED safelights and conventional filtered incandescent safelights. The Kodak LED safelight offers a compact design and is comprised of a cluster of 20 light-emitting diodes. The pure red light emitted provides twice as much visible light than conventional filtered incandescent safelights, yet is safe for handling all types of dental x-ray film. Unlike conventional lamps, there are no bulbs or filters to replace (guaranteed for the life of the bulb). Also, power consumption is very low (one-tenth the power draw of a bulb and filter). Conventional lamps are available in several sizes and styles to accommodate your requirements. A frosted 15W bulb is recommended. All lamps should be equipped with a GBX-2 safelight filter. The deep ruby red filter is appropriate for all intraoral and extraoral dental x-ray films. Recommendations for safelighting: • Place safelight at least 4' (1.2 m) from the area where film will be handled. • Keep safelighting exposure as short as practical. For Kodak LED safelight: • Mount safelight into socket. Do not use filters with LED safelight. For conventional safelights: • Always use a frosted light bulb with wattage of 15W or less. • A Kodak GBX-2 safelight filter is recommended for use with both intraoral and extraoral dental films. • The safelight filter is properly installed in the lamp when you can read the “GBX-2” on the surface of the filter. • Check for cracked or faded filter and replace the filters as necessary. |
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http://www.kodak.com/global/en/health/dental/film/safelightLamps.jhtml?pq-path=2413 KODAK LED Safelight Designed to replace conventional filtered incandescent safelights, it is the latest in lighting technology and offers more efficient darkroom light so you can see better and work more comfortably. It's also easy to install: just screw it into a standard light bulb socket and you're ready to get to work. KODAK Safelight Lamps http://www.kodak.com/global/en/consumer/products/techInfo/k4/k4KodakSafelites.shtml Product Literature http://www.kodakdental.com/documentation/film/brochures/D5-28safelight.pdf LED Safelight The latest in lighting technology The Kodak LED safelight is a bright, energy efficient lighting solution that provides twice as much visible light as conventional systems without compromising image quality. The Kodak LED safelight will deliver high-intensity illumination over your work area while providing safe handling conditions for dental films, including 400-speed panoramic and low dosage F-speed intraoral films. Energy efficient and maintenance free The Kodak LEDsafelight is designed to screw into a standard light socket, so installation is quick and simple. With a rated life of 100,000 hours, it will provide years of dependable service. The lamp is comprised of 20 light-emitting diodes (LED), which transmit a pure red light at the lowest spectral sensitivity of dental x-ray films. You can see better without risk of losing radiographic quality. The safelight is energy efficient, using 1/10th the power of a standard incandescent lamp. • No filters to replace • No bulbs to replace • Extremely low heat generation • No more fogged film from faded or damaged safelight filters • Three-year warranty Illustration of the increased effectiveness of the new Kodak LED safelight. • Visible light at 48 in • Traditional 15-watt bulb with a GBX-2 filter: 165 mlx • Kodak LED safelight: 320 mlx • Twice as much visible light with the Kodak LED safelight TECHNICAL SPECIFICATIONS Rated life 100,000 hours; warranted for three years LED Emitters 20 Color Red Wavelength 660 nm peak Viewing Angle Wide Fixture Standard light bulb socket Luminous intensity 320 mlx Power 10 mA (one-tenth power draw of a bulb and filter) Heat displacement Extremely low Approvals UL Approved Catalog Number 852 6444 Available for purchase: Patterson Item #: 313-9003 Description: led safelight Manufacturer: EASTMAN KODAK CO Mfg Item#: 852-6444 1 @ 168.50 / EA https://www.pattersondental.com/app.aspx?cmd=get_item&id=168214 |
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