Development of an automatic measurement instrument for the filter function of special light filter 特種濾光片濾光特性批量測試儀的研制
Development of high stability and narrow band standard interference light filter for enzyme content analyzer 酶標分析儀高穩(wěn)定度窄帶標準干涉濾光片的研制
Almost no light filtered through the great dull clouds which hovered like heavy dumplings in the sky and seemed to presage many hours of snow 空中暗云低徊,陰沉沉的一片,一縷陽光也透不過來,看樣子這雪還得下好幾個鐘頭哪。
According to whether the light intension is in the zone of ccd linear response we control the direct current dynamo to drive the light filter to reduce the measure err effectively 根據(jù)光強是否在ccd線性響應區(qū)間這一結(jié)果來控制電機帶動濾光片轉(zhuǎn)動,實現(xiàn)了對光強的自動調(diào)節(jié),從而減小測量誤差。
Today , liquid crystal , a new functional material , has been applied more and more widely . on the side of display , owing to stable frarne , absolute environmental protecting , save electric energy and no tire for user , liquid crystal display keeps ahead among the range of display . with the developing of the technology of liquid crystsl , lcd will must substitute for crt and become the chief in market . in additin , liquid crystsl light filers which have been used in optic communicatins and light information handling , emply th e technical of combining the birefringence of liquid crystsl and fabry - petrot - type cavity . they manifest a series of merit , such as narrow band wide , deterioration low , wide tuning domain , simple structure and low cost , so liquid crystal light filter draw attention of many country 現(xiàn)在,液晶作為一種新型功能材料越來越得到廣泛的應用,在電子顯示裝置中,液晶顯示器以其畫面平穩(wěn)、真正安全環(huán)保、省電和使用者不易疲勞等優(yōu)點領(lǐng)先于顯示器的行列中。隨著液晶技術(shù)的發(fā)展,液晶顯示器將取代crt顯示器逐步成為未來市場的主流。此外,應用于光通信和光信息處理中的電調(diào)諧液晶濾光片,采用液晶材料的雙折射和電光效應與傳統(tǒng)f - p腔相結(jié)合,表現(xiàn)出窄帶寬、低損耗、調(diào)諧范圍寬、驅(qū)動電壓低、結(jié)構(gòu)簡單、低成本等一系列優(yōu)點,而日益受到各國研究部門的關(guān)注。
Realizing the excellency of nd : yv04 crystal , we use nd : yv04 / ktp firstly in our experimentation . the loss of light with different polarized orientation is different , when it through nd : yv04 crystal . utilizing the case and changing the thickness of ktp crystal by controlling temperature , we get a narrow light filter , so the cavity operates with single longitudinal mode 文中提出一種新的方案,采用nd : yvo _ 4 ktp組合,利用nd : yvo _ 4晶體對偏振態(tài)的選擇作用以及溫度控制ktp晶體長度,實現(xiàn)雙折射窄帶濾波,強制激光器工作在單縱模的模式下。