驗(yàn)鈔燈和紫外線燈的區(qū)別
zui近小編發(fā)現(xiàn)很多朋友到我們上海峰志儀器有限公司紫外線探傷燈網(wǎng)站上找驗(yàn)鈔燈，或者是咨詢“紫外線燈與驗(yàn)鈔燈的區(qū)別”，在此小編為你整理并說(shuō)明：
定義：紫外線燈是一種能發(fā)射紫外線燈具，波長(zhǎng)在10~400nm；驗(yàn)鈔燈是利用紫外線檢查鈔票真?zhèn)蔚臒艟?，波長(zhǎng)為365nm/395nm，一般檢查人民幣真?zhèn)斡?95nm的紫外線驗(yàn)鈔燈就可以了，365nm紫外線驗(yàn)鈔燈用做檢驗(yàn)外幣。從定義上看，我們知道紫外線燈的范圍大于驗(yàn)鈔燈的范圍，驗(yàn)鈔燈只是紫外線燈的一種。
驗(yàn)鈔燈使用的是紫外線熒光燈管或是LED燈，盯著看久了紫外線肯定會(huì)對(duì)眼球內(nèi)晶體、視網(wǎng)膜等造成損傷， 使用對(duì)紫外線驗(yàn)鈔燈工作時(shí)，在進(jìn)行操作時(shí)都應(yīng)該認(rèn)真防護(hù)。不要讓紫外線直接照射到皮膚和眼睛，不要長(zhǎng)時(shí)間盯著燈看，不要用紫外線手電對(duì)著人體照射，更不要長(zhǎng)時(shí)間使用。
紫外線對(duì)人體的傷害與紫外線的輻射強(qiáng)度和輻射時(shí)間成正比，即照射劑量越大，對(duì)人的傷害越嚴(yán)重。人體受到短時(shí)間照射即會(huì)產(chǎn)生皮膚泛紅、搔癢、起過(guò)敏性的丘疹;長(zhǎng)時(shí)間照射會(huì)使皮膚組織受到嚴(yán)重的傷害，足夠劑量的照射甚至?xí)斐善つw的癌變。紫外線照射到人眼也非常有害，短時(shí)較大劑量照射會(huì)使眼睛紅腫、流淚、睜不開眼，長(zhǎng)期受到紫外線輻射會(huì)導(dǎo)致白內(nèi)障甚至致盲。 另外，長(zhǎng)時(shí)間開著紫外線燈你會(huì)聞到一股味道，對(duì)了，那就是臭氧的味道，紫外線輻射時(shí)會(huì)使空氣中的氧氣生成臭氧使人產(chǎn)生頭暈、惡心的不良反應(yīng)。
但是在shajun方面，紫外線為人類作出了巨大的貢獻(xiàn)。 很長(zhǎng)時(shí)間以來(lái)，利用253.7nm波長(zhǎng)紫外線對(duì)病房、制藥企業(yè)等其它的室內(nèi)環(huán)境及器具物品進(jìn)行已經(jīng)是較為普遍而有效的一種方法。 另外，提示大家不要等燈管不亮了，再換燈管。沒(méi)發(fā)現(xiàn)使用一段時(shí)間驗(yàn)鈔能力就下降了嗎?這是因?yàn)樽贤饩€燈屬于氣體放電燈，它與照明用的熒光燈(管燈)的放電機(jī)理沒(méi)什么區(qū)別，所不同的是它的燈管是用石英玻璃或透紫外玻璃制成,而不是用普通玻璃,燈管內(nèi)壁也不涂熒光粉。它可以輻射出一定強(qiáng)度的253.7nm波長(zhǎng)的紫外線。 如果是LED燈除外，因?yàn)長(zhǎng)ED的光衰比較慢。
紫外線燈也是有壽命的，隨著使用時(shí)間的延長(zhǎng)，紫外線的有效輻射會(huì)不斷的降低，發(fā)現(xiàn)驗(yàn)鈔功效降低時(shí)，就應(yīng)該更換燈管了，不應(yīng)該等到壞了再換。 說(shuō)了這么多，其實(shí)只要正確使用，還是可以避免傷害的。畢竟它的功率和波長(zhǎng)和紫外線燈還是有很大區(qū)別的，也提醒大家不要讓家里的寶寶玩驗(yàn)鈔燈哦，孩子的眼睛是很脆弱的。想要了解更多紫外線燈的危害等光污染小知識(shí)，歡迎登陸上海峰志儀器有限公司網(wǎng)站。
紫外線燈常常按照它的波長(zhǎng)范圍，做不同的應(yīng)用，我們生活中應(yīng)用zui廣泛的是長(zhǎng)波紫外線燈（320～420nm），驗(yàn)鈔燈也是長(zhǎng)波紫外線燈的一種應(yīng)用，長(zhǎng)波紫外線燈因?yàn)椴ㄩL(zhǎng)段和制作工藝不同，被應(yīng)用到真?zhèn)悟?yàn)證、驗(yàn)鈔、固話、、探傷、撿漏、實(shí)驗(yàn)室觀察、刑警法醫(yī)檢查……不同領(lǐng)域
而我們上海峰志儀器有限公司研發(fā)的紫外線燈主要是被用做“脫脂清洗表面檢查”“表面無(wú)損探傷”“泄露熒光檢查”“刑警法醫(yī)檢查”“實(shí)驗(yàn)室動(dòng)植物/半導(dǎo)體觀察/檢查”……了解更多關(guān)于上海峰志儀器有限公司紫外線燈，請(qǐng)咨詢：網(wǎng)頁(yè)底部.
LUV-4B battery operated, protable,mini uv lamp
Affordable Competitively priced to offer the best value for your money.
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Compact Pocket-sized unit measures only 6.25 x 2 x 1" (16.215.9 x 5.5 x 2.5cm).
Portable Conveniently transportable for on-site or field applications. Lightweight, transistorized unit provides 4 to 6 hours of use. Uses four 1.5V standard AA size batteries (not included). Handy nylon wrist strap provided.
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UV-4B Specification
| Wavelength | 365nm |
| Weight | 7 ounces (198g) |
| Features | Self-filtered, long-wave tube |
| Applications | Counterfeit currency detection, quality control, mineralogy, antique/collectible examination, readmission control |
This Model LUV-4B Mini UV lamp uses a 4-watt fluorescent tube with a wavelengthof 365nm. It is an excellent lamp for office or quick field inspection. Lamp islightweight and small enough to fit into a pocket. A nylon strap is attached foreasy handling. Operates on four AA batteries. Replacement 6" BLB type LW tubebulb is optionally available.
Applications Include...
LOCATE PET URINE SOURCES...
The amber-colored pet urine is composed of protein metabolism waste products,with feline diets typically protein richer than dogs. The urine will glow in thedark using a blacklight (longwave UV light). Since the UV light is relativelyweak, it works best to darken the room as much as possible.
Using lower wattage blacklights (4 watt) require being close to the inspectionarea with it as dark as possible.
FORGERY ANALYSIS
Forgeries of bank notes, standard checks and travellers' checks are mainlyprinted on inferior bleached paper or photocopied. Forgeries will glow under UVlight and bona fides will be completely dull. Many newer credit cards have aninvisible imprint on the front. American Express uses "AMEX". If no imprint, thecard is a forgery. Alterations of legal documents such as careful erasure or inkeradication and altering paper textures are detectable with UV light.
CURRENCY VERIFICATION
Authentic U.S. paper currency has embedded stripes which will fluoresce underultraviolet light as follows: $5 glows blue, $10 glows orange, $20 glows green,$50 glows yellow, and $100 glows red. The $1.00 bill has no stripe.
GEMSTONE and MINERAL INSPECTION
UV Light can react with the chemicals of a mineral specimen and cause it toglow, called fluorescence. Color and intensity of the fluorescence can identiftymany materials. Some minerals and gemstones have brilliant fluorescence underlongwave UV light.
ARSON DETECTION
In arson detection, accelerants' fluorescent glow is greater when exposed longerto heat. Their evidence is not always visible as they are absorbed by the firebut UV light can expose them.
Volatile hydrocarbons such as gasoline, grease, paints and others fluoresce whenexposed to UV, and can be seen as fragments of incendiary devices. Ambient lightmust be minimized for use of UV light at a fire scene.
CRIME SCENE INSPECTION
Illegal dumping can be tracked at night using UV light.
UV light is used to detect the presence of trace evidence in forensicinvestigations. Blood, urine, semen and saliva can present visible fluorescence.
ARTWORK INSPECTION
UV or black light reveals changes on the surface of objects as it causesspecific fluorescence in materials depending on composition and age. UVfluorescence can show overpainting or retouching and identify types of stains.
One can detect repair in paintings and rugs using UV light, as differences canbe seen between the chemical composition of newer inks, paints, and dyes andthat of the originals.
ADMISSION / ACCESS OR CROWD CONTROL
In high-patronage clubs, amusement parks and swimming pools, applying quickdrying readmission inks can be read easily by UV light. For beverage control, aportable, small UV light can slip in a pocket.
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