這些尖銳邊(bian)緣濾(lv)波(bo)器通(tong)常(chang)被稱為長波(bo)通(LWP)和(he)短波(bo)通(SWP)濾(lv)光片,其特(te)征(zheng)在(zai)於它(ta)們在(zai)反射(she)和透(tou)射(she)區域(yu)之(zhi)間的高轉(zhuan)換(huan)率。如(ru)此高的(de)轉(zhuan)換(huan)率使(shi)其成為熒光(guang)應(ying)用(yong)中(zhong)的(de)發(fa)射(she)濾光(guang)片以及光(guang)度法(fa)中(zhong)的排序(xu)濾光片的xxx選擇。它(ta)們還可(ke)以用(yong)作雜散(san)光(guang)或微(wei)調(tiao)濾(lv)光(guang)片,以消除(chu)任(ren)何(he)不需(xu)要(yao)的(de)近(jin)帶(dai)輻(fu)射(she)。所有(you)Andover LWP / SWP濾(lv)光(guang)片均由堅(jian)硬,耐用(yong)的(de)D壹表(biao)面(mian)介電塗層構成,可(ke)承受與(yu)任(ren)何(he)高質(zhi)量(liang)光學(xue)組件(jian)相(xiang)關的(de)常(chang)規(gui)清(qing)潔和處理。它(ta)們的膜(mo)結(jie)構本(ben)質(zhi)上是(shi)經過修(xiu)改的(de)四(si)分(fen)之壹波(bo)長疊(die)堆(dui),利(li)用(yong)幹(gan)涉效應(ying)而不是(shi)吸收(shou)來(lai)隔(ge)離(li)其光(guang)譜帶(dai)。與(yu)濾鏡不同(tong) 由(you)於對波(bo)長隨角(jiao)度的(de)變(bian)化不敏感,這些濾光器的(de)波(bo)長隨入(ru)射(she)角的(de)增(zeng)加(jia)而變(bian)短。此功(gong)能在(zai)可(ke)能需(xu)要(yao)微(wei)調(tiao)50%截(jie)止(zhi)波(bo)長或(huo)截止(zhi)波(bo)長的(de)應用(yong)中(zhong)很(hen)有(you)用(yong)。所(suo)有(you)標準邊(bian)緣濾(lv)光片都可(ke)以從400nm到1000nm以50nm的(de)增量(liang)遞增。
▪ Low-cost
▪ Wide slection of wavelengths
▪ Provide steeper transistion than color glass filters
General Specifications
| Thickness: | 4.0mm maximum |
| Size Tolerance: | +0.0mm/-0.5mm |
| Min. Clear Aperture: | 85% of outside dimension |
| Substrate Material: | Glass (Note: BK-7 or Borofloat available as an option for higher Tx.) |
| Flatness: | 3-5 waves per 25 TWF |
| Surface Quality: | 80-50 per MIL-C-48497A |
| Humidity and Abrasion: | Per MIL-C-675A |
| Operating Temperature: | -50°C to +200°C |
| Cut-on Slope: | 6% maximum (11% for 300nm filter) |
| Cut-on Tolerance: | ±10nm from 400nm-1100nm ±5nm from 300nm - 375nm |
| Mechanical: | Unmounted |
Transmission
| Long Wave Pass: | 85% average from the 50% cut-on point to 2000nm |
| Short Wave Pass: | 400-450nm: 85% avererage from the 50% cut-on point to 0.75 x the 50% cut-off point 500-1000nm: 85% avererage from the 50% cut-on point to 0.75 x the 50% cut-off point Note: with the exception of the 400nm filter, all SWP filters will drop off in transmission at wavelengths under 400nm.) |
Rejection
| Long Wave Pass: | 99% or greater from 0.9 x the 50% point to the UV |
| Short Wave Pass: | 99% or greater from 1.07 x the 50% point to 1.25 x the 50% point |
| Effective index of refraction (n*) | 1.7 (approximately) |
| DESCRIPTION | PART NO. |
| 300.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 300FH90-12.5 |
| 300.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 300FH90-25 |
| 300.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 300FH90-50 |
| 300.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 300FH90-50S |
| 325.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 325FH90-12.5 |
| 325.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 325FH90-25 |
| 325.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 325FH90-50 |
| 325.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 325FH90-50S |
| 350.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 350FH90-12.5 |
| 350.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 350FH90-25 |
| 350.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 350FH90-50 |
| 350.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 350FH90-50S |
| 375.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 375FH90-12.5 |
| 375.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 375FH90-25 |
| 375.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 375FH90-50 |
| 375.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 375FH90-50S |
| 400.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 400FH90-12.5 |
| 400.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 400FH90-25 |
| 400.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 400FH90-50 |
| 400.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 400FH90-50S |
| 450.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 450FH90-12.5 |
| 450.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 450FH90-25 |
| 450.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 450FH90-50 |
| 450.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 450FH90-50S |
| 500.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 500FH90-12.5 |
| 500.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 500FH90-25 |
| 500.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 500FH90-50 |
| 500.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 500FH90-50S |
| 550.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 550FH90-12.5 |
| 550.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 550FH90-25 |
| 550.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 550FH90-50 |
| 550.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 550FH90-50S |
| 600.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 600FH90-12.5 |
| 600.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 600FH90-25 |
| 600.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 600FH90-50 |
| 600.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 600FH90-50S |
| 650.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 650FH90-12.5 |
| 650.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 650FH90-25 |
| 650.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 650FH90-50 |
| 650.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 650FH90-50S |
| 700.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 700FH90-12.5 |
| 700.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 700FH90-25 |
| 700.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 700FH90-50 |
| 700.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 700FH90-50S |
| 750.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 750FH90-12.5 |
| 750.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 750FH90-25 |
| 750.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 750FH90-50 |
| 750.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 750FH90-50S |
| 800.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 800FH90-12.5 |
| 800.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 800FH90-25 |
| 800.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 800FH90-50 |
| 800.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 800FH90-50S |
| 850.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 850FH90-12.5 |
| 850.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 850FH90-25 |
| 850.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 850FH90-50 |
| 850.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 850FH90-50S |
| 900.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 900FH90-12.5 |
| 900.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 900FH90-25 |
| 900.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 900FH90-50 |
| 900.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 900FH90-50S |
| 950.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 950FH90-12.5 |
| 950.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 950FH90-25 |
| 950.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 950FH90-50 |
| 950.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 950FH90-50S |
| 1000.0nm Cut-on, 12.5 mm dia., unmounted, Long Wave Pass Edge Filter | 100FH90-12.5 |
| 1000.0nm Cut-on, 25.0 mm dia., unmounted, Long Wave Pass Edge Filter | 100FH90-25 |
| 1000.0nm Cut-on, 50.0 mm dia., unmounted, Long Wave Pass Edge Filter | 100FH90-50 |
| 1000.0nm Cut-on, 50.0 x 50.0 mm sq., unmounted, Long Wave Pass Edge Filter | 100FH90-50S |