optolong bandpass filter specifications
substrates: b270, bk7, jgs
center wavelength(cwl): 250nm-2000nm
cwl accuracy: above± 2
fwhm: 7nm-100nm
fwhm accuracy: above± 2
blocking range: 200nm-2200nm
blocking depth: od2-od6
diameter(mm): φ3mm~φ150mm
size(mm): 3×3~150×150
thickness(mm): 0.3mm~6.3mm
surface/coating quality: 60 / 40, 40 / 20
bandpass transmittance: > 95% of the common
edge treatment(select-able): mounted in black anodized aluminum ring
bandpass filter through a designated waves,at the same time ,cutoff other disturbing light.
bandpass filter types producted by optolong including long pass filter, short pass filter, laser bandpass filter, fluorescent bandpass filter, multi-bandpass filter and negative filters. widely applied to the field of laser, license plate recognition, vehicle wheel alignment, biochemical analysis, the CCD / CMOS digital imaging, face / iris recognition, security cameras, infrared touch screen, somatosensory games, machine vision and other high-tech optical instruments.
advantage of optolong's bandpass filters
15 years of experience in optical filters
ion assisted deposition technique ( IAD) using
the high film layer density, high film layer firmness, high performance and stability.
a wide range of cut-off,high cut-off depth,high transmittance.
effectively prevent stray light interference.
all filters are RoHS requirements.
OEM and ODM are welcomed!
| CWL(nm) | FWHM(nm) | T(min) | OD/Block Range |
| 254±2 | 10±2 | 30% | OD4@190-2500nm |
| 280±2 | 15±3 | 40% | OD3@200--1100 |
| 340±2 | 70±2 | 75% | OD3@200--1100 |
| 450±2 | 10±2 | 80% | OD3@200--800 |
| 435±2 | 40±2 | 85% | OD3@200-1100 |
| 500±2 | 10±2 | 50% | OD5@300--700 |
| 530±2 | 20±2 | 90% | OD2@400--1100 |
| 630±2 | 20±2 | 90% | OD2@400--1100 |
| 635±2 | 10±2 | 90% | OD3@400-1100 |
| 650±2 | 10±2 | 90% | OD3@400-1100 |
| 750±2 | 10±2 | 80% | OD3@200-800 |
| 808±2 | 30±2 | 85% | OD3@400--1100 |
| 810±2 | 60±2 | 90% | OD3@400--1100 |
| 840±2 | 60±2 | 85% | OD3@300--1100 |
| 850±2 | 30±2 | 90% | OD3@400--1100 |
| 905±2 | 30±2 | 85% | OD3@400--1100 |
| 940±2 | 30±2 | 85% | OD3@400--1100 |
| 950±2 | 70±2 | 90% | OD3@300--1100 |
| 1064±2 | 15±2 | 80% | OD3@300--1300 |
| 1740±2 | 30±2 | 75% | OD3@300--1500 |
Kunming Yulong Optical & Electronics Technology Co., Ltd. is a high technology company, which specialized in optical filter design and processing. OPTOLONG Established in 1999, and located in Kunming City. We provided nearly 2000 optical coating lenses for more than 700 optical companies all over the world, and we have working relations with 4 global top 500 enterprises and 2 world famous EMS manufacturers. We've obtained ISO9001 system certificate since 2005. In September 8th, 2006, tested by SGS, RoHS certification. We are the first people of Golden Supplier from Alibaba, and passed the third party ---TUV Rheinland and Bureau Veritas independent audit.
OPTOLONG products including three main categories:
Astronomy Filters:
We are the most professional manufacturer of astronomical filters in China, we have broken the foreign monopoly situation on astronomical filters. OPTOLONG produce more than 20 kinds of astronomical filters, such as UHC, CLS-CCD, H-Beta, O-III, H-Alpha, SII-CCD 12nm, LRGB, Night Sky H-Alpha, ND2~1000, offers more options for amateur astronomers all over the world.
Fluorescence Filters:
We design and product all specifications of fluorescence filters, include excitation filter, emission filter, and dichroic mirror.
Laser and Bandpass Filters:
We are with the filter design and production experience for many years, can be customized bandpass filter with wavelength from 250 nm to 2000 nm.
Also others:
Edge Filter, Beam Splitters, Reflective Mirror, Anti-reflective coating, Optical windows etc. Custom filters can be fabricated: Please contact our technical support staff to discuss your particular requirements.
Main of our optical filter is for high-tech fields like photoelectric medial instrument, laser system devices, motion sensing game, monitoring and photography, optical laying equipment, astronomical observation, and so forth.
There are five high precious optical vacuum coating machines, Spectrophotometer, Ultrasonic Cleaners with 12 sinks, and optical processing equipment here. Advanced equipment and experienced staffs guarantee OPTOLONG could supply competitive prices, graceful quality products, timely delivery and perfect services to our global customers. Thanks for your attention and remember OPTOLONG is your Optical Coating Partner at any time!
