Esco Optics(美国)


171 Oak Ridge Road Oak Ridge, NJ 07438 USA
+1 973 697 3700
+1 973 697 3011
非球面光学  定制光学  介质膜  介质膜反射镜  激光反射镜  透镜  金属膜镜片  镜片  光学材料  光学窗口  棱镜  增透膜 


Esco Optics位于美国新泽西州,主要从事光学元件和精密光学元件的定制和制造。


Fused Silica / Fused Quartz

Fused silica is a high-purity, non-crystalline material manufactured through oxidation of raw silica in a flame hydrolysis process, while fused quartz is fabricated by the melting of naturally occurring quartz.  Each process yields specific characteristics optimized for use within a given range of the UV, Visible and Near-Infrared portions of the spectrum.  While either material may be suitable for use in a given application, the below categories offer additional information on their specific benefits. Esco is pleased to provide links to the manufacturer’s material data sheets for further information.

Ultraviolet (UV) Fused Silica

Optimum Transmission Range:

Ideal Applications:

 180 nm - 2.0 µm

 Deep UV transmission elements

 Minimum scattering systems

UV fused silica provides excellent transmission into the deep UV.  Its outstanding homogeneity, lack of fluorescence and resistance to thermal shock makes it ideal for applications demanding superior wavefront performance when exposed to high-power lasers and challenging environmental conditions.  With the removal of metallic impurities, certain grades of UV fused silica are tailored for use in 248nm and 193nm semiconductor wavelengths and demonstrate superior throughput for these applications.

Manufacturer's Material Data (PDFs)

Infrared (IR) Fused Silica

Optimum Transmission Range:

Ideal Applications:

 250 nm - 3.6 µm

 Superior optical quality and IR transmission

The near infrared portion of the spectrum suffers from absorption bands in the presence of OH- ions.  IR grade fused silica is specifically manufactured to remove these impurities thus offering substantially higher transmission over UV grade fused silica up to 3.5 microns.  This characteristic, along with resistance to thermal shock and high homogeneity, makes it a cost-effective option when compared to other IR materials for applications including NIR process control and inspection for machine vision, high resolution SWIR imaging, as well as, remote sensing and metrology.

Manufacturer's Material Data (PDFs)

Optical Grade Fused Quartz

Optimum Transmission Range:Ideal Applications:
 270 nm - 2.5 µm Condenser optics not concerned with scatter or distortion
 High temperature and pressure applications
  Optical flats, microscope slides, and sight glasses

Due to metallic impurities and OH- content, optical grade fused quartz does not boast the range of transmission offered by UV and IR grade fused silica.  However, despite this shortcoming, fused quartz still offers superior thermal shock and chemical resistance, as well as, high transmission from 270nm to 2.5 microns.  For applications within this range, fused quartz provides a cost-effective option to the more expensive grades of fused silica.

Manufacturer's Material Data (PDFs)

Filter Glass

Esco Optics offers colored glass filters from Schott, Hoya and Isuzu. Applications for the filters include bandpass, long and short bandpass, multiband, or neutral density filters covering the UV, visible, and near-infrared wavelength regions. Color compensation, light balancing and heat absorbing filters are also available.

Esco Optics provides our polished catalog filters in 12.7 and 25.40mm diameter as well as square 50.80mm filters. Neutral density filters are also offered. Esco also fabricates custom sized glass filters in any configuration. Specific manufacturer data can be found below.

SCHOTT Filter Glass

Schott colored glass filters have been a mainstay in the precision optics industry for many years. Esco is proud to offer all listed types to our customers.

Manufacturer's Material Data (PDFs)


UV Bandpass




Neutral Density

Hoya Filter Glass

Hoya colored glass filters have been used as color correctors, contrast enhancement filters and light balancing filters for many years. Esco also offers a full range of Hoyasharp cut and heat absorbing filters.

Manufacturer's Material Data (PDFs)

Color Compensating – Cyan



Heat Absorbing

Infrared Transmitting

Infrared Bandpass

Light Balancing – Amber

Light Balancing – Blue

Neutral Density

Multiband Calibration

UV Transmitting, VIS Absorbing

Sharp Cut – Colorless

Sharp Cut – Orange

Sharp Cut – Red

Sharp Cut – Yellow

Isuzu Filter Glass

Isuzu glass offers the largest selection of heat absorbing filters in today’s market. Esco can supply any shape or configuration to our customers.

Manufacturer's Material Data (PDFs)

UV Transmitting

UV Sharp Cut

UV Transmitting, VIS Absorbing

Color Compensating -Blue



Light Balancing

Neutral Density

IR Transmitting

Heat Absorbing

Flint Glass

Flint glass is combination of silicon dioxide (SiO2) with lead or potassium. It creates a relatively high refractive index and high degree of light dispersing power compared to other types of glass. Flint glasses are arbitrarily defined as having an Abbe number of 50 to 55 or less. Flint glasses have refractive indices ranging between 1.45 and 2.00.As a result, this blend of glass is characterized by its brilliance and luminosity. This property makes flint glass especially desirable in the production of lenses, optical instruments, and prisms. In modern flint glass, lead oxides are replaced with other metal oxides such as titanium dioxide and zirconium dioxide without significantly altering the optical properties of the glass. 

Optical Glass

Optical glasses are available across a wide range of refractive indices and dispersions. Each optical glass is specifically designed to perform in accordance with carefully controlled optical characteristics.

While some may be easier to process than others, Esco Optics, through years of fabrication and polishing experience, is equipped and proficient in the manufacture of precision lenses, aspheres, optical windows, and optical glass prisms. 

We are happy to assist our customers with a vast array of optical configurations. Below is a comprehensive list of optical glass for your reference.

SCHOTT Optical Glass

Schott offers over 120 types of optical glasses grouped by similar chemical composition.  From traditional lead oxide materials, arsenic free N-glasses, and high transmission glasses designated “HT” or “HTultra”, Schott covers the entire standard range of refractive indices and dispersion values.  On request, they also provide materials with more tightly controlled homogeneity for high precision applications.

Manufacturer's Material Data (PDFs)

Ohara Optical Glass

Ohara optical glass is available in over 130 ecologically safe varieties that are free of arsenic and lead.  Their extensive line of material covers a wide portion of available refractive indices and dispersions and includes materials specially selected for high homogeneity and transmission. 

Manufacturer's Material Data (PDFs)

Hoya Optical Glass

Hoya has been manufacturing optical glass since 1941. Like other material providers, they’ve invested heavily in the formulation of environmentally friendly glasses free of lead and arsenic. The offer a full complement of high and low index glasses to suit many different applications.

Manufacturer's Material Data (PDFs)

CDGM Optical Glass

CDGM is the world’s largest producer of optical glasses and located in Chengdu, China. Their portfolio of products include high refractive index, low dispersion lanthanum-based materials, environmentally friendly arsenic, lead and cadmium-free varieties, as well as, fluorophosphates glasses for high resolution imaging systems.

Manufacturer's Material Data (PDFs)


Optimum Transmission Range:

Ideal Applications:

 200 nm - 5.0 µm

 With PbS, PbSe, and InSb detectors. Spectral transmittance matches spectral sensitivity of detectors

 Infrared, high temperature, high pressure, high thermal shock environments

 Scratch resistant elements used in rain resistance, bar code scanning applications

Synthetic sapphire is an anisotropic crystalline material composed of single crystal aluminum oxide (Al2O3). Esco works with only high quality, optical grade sapphire. It is essentially 100% pure. The various properties of sapphire are a function of the direction within the crystal with respect to the optic axis. It has an extremely wide transmission spectrum (150 nm to 6.0 µm). Its high melting point, good thermal conductivity and low thermal expansion provide excellent performance in high temperature environments. The extreme hardness of sapphire makes it difficult to polish using standard techniques. High optical quality finishes on sapphire are not always possible.

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