Optical Measurement & Reference Devices

OTS (Optical Transmittance Spectrometer)

OTS

This simple, yet elegant system is ideal for accurate, repeatable measurements of optical filters, glass and ophthalmic lenses.

We’ve combined our expertise in miniature spectrometers and accessories with experience as a manufacturer of precision optics to create a compact system for real-time transmittance measurement of ophthalmic lenses and other optical components.

The OTS is ideal for both in-line and in-lab applications where transmittance accuracy (to +/- 1.0%) and precision (+/- 0.1%) are critical. Common applications include measurement of optical coatings, windows and filters, and glass and plastic components.

The OTS covers the 380-780nm wavelength range and accepts samples from 10-150mm in diameter and up to 10mm thickness. The system comprises several components:

• High-resolution miniature linear CCD-array spectrometer configured for 380-780nm
• High-power, 20-watt tungsten halogen light source
• Fiber optic integrating sphere for collecting signal transmitted through the sample
• Optics for improved beam collimation and spectral sensitivity distribution
• Sample fixture (z-stage) to hold sample in place and exclude ambient light
• Short optical fiber to channel signal from the integrating sphere to the spectrometer
• Customized lens transmittance and color calculation software

Weight: 12lbs
Dimensions: 6 x 6 x 10mm

 

Shop OTS in Optical Filter Shop


Specular Reflectance Standard, Low Reflectivity

STAN-SSL_01

The STAN-SSL low-reflectivity specular reflectance standard is a black glass standard that can be used as a reference when measuring surfaces with low specular reflectance values such as thin film coatings, anti-reflective coatings, blocking filters and substrates. The coated surface of the STAN-SSL provides ~4.0% reflectance across the 200-2500nm wavelength range.

The STAN-SSL substrate weighs 1lb, measures 1.25″ in diameter and is housed in a sturdy 1.5″ x 0.75″ blue anodized aluminum enclosure and protected by a screw-on top.

 

User Tips

  • The use of the STAN-SSL is limited to 200-2500nm
  • Use the STAN-SSL to set a low-reflectivity reference of ~4%
  • Although the black glass is a durable substrate, the user should handle it with care to maintain the integrity of its calibrated surface
  • To clean the STAN-SSL surface, first remove dirt and dust by blowing it off with a pressurized gas. Then use the drag method of cleaning to remove fingerprints and residual contaminants. In the drag method, lens tissue saturated with reagent-grade isopropyl alcohol or acetone is slowly dragged across the surface. Done correctly, the solvent will evaporate uniformly with no streaking or spotting

STAN-HOLDER Reflectance Standard Holder

The STAN-HOLDER is a convenient accessory option for keeping the standard secured in place or to an optical post during measurements. STAN-HOLDER is available for $99.

 

Shop Specular Reflectance Standards in Optical Filter Shop


 

Specular Reflectance Standard, High Reflectivity

STAN-SSH_01The STAN-SSH high-reflectivity specular reflectance standard is a mirrored, fused-silica standard that can be used as a reference when measuring surfaces with high specular reflectance values such as optical substrates, optical coatings, machined metals and semiconductor materials. The STAN-SSH provides ~85-90% reflectance across the 250-800nm wavelength range and ~85-98% reflectance across the 800-2500nm range.

The NIST-traceable STAN-SSH-NIST is calibrated to a NIST master (NIST part number NIST38060S, s/n 091710A5) with approximately 1.0% accuracy from 250-2500nm). With the shipment of the NIST-traceable version, the customer will receive a certificate of calibration, a data sheet with the reflectance values as a function of wavelength and a disc which contains calibration data that can be transferred to a spectrometer operating software.

A periodic recalibration of the STAN-SSH-NIST is recommended. PIXELTEQ offers a recalibration service (STAN-SSH-RECAL). Call for price. Should the calibrated surface become corrupted, a recoat and calibration service is offered for only $390.

The STAN-SSH substrate weighs 1lb, measures 1.25″ in diameter and is housed in a sturdy 1.5″ x 0.75″ blue anodized aluminum enclosure and protected by a screw-on top.

User Tips

  • The use of the STAN-SSH is limited to 250-2500nm
  • Use the STAN-SSH to set a high-reflectivity reference
  • Although the STAN-SSH aluminum coating is protected with a proprietary overcoat, the user should handle the standard with care in order to avoid corrupting the integrity of the calibrated surface. The surface should not be touched by hands or objects to avoid contaminating or damaging the surface
  • To clean the STAN-SSH surface, first remove dirt and dust by blowing it off with a pressurized gas. Then use the drag method of cleaning to remove fingerprints and residual contaminants. In the drag method, lens tissue saturated with reagent-grade isopropyl alcohol or acetone is slowly dragged across the surface. Done correctly, the solvent will evaporate uniformly with no streaking or spotting. Bare metallic coatings are delicate and cannot be cleaned in this manner. Dirt and fingerprints will permanently damage a bare metal-coated mirror, so a user should handle the STAN-SSH carefully to prolong the life of the coating

STAN-HOLDER Reflectance Standard Holder

The STAN-HOLDER is a convenient accessory option for keeping the standard secured in place or to an optical post during measurements. STAN-HOLDER is available for $99.

 

Shop Specular Reflectance Standards in Optical Filter Shop