Midopt Training

Posts tagged with Infrared

Improving Contrast in Print OCR with IR Imaging

In the original image, a white backlight is used without a filter. When a MidOpt® BP850 Near-IR Bandpass Filter is placed over the lens and used with an IR backlight, the filter blocks the visible portion of the spectrum but passes only the ink illuminated by the output wavelength of the IR backlight. This makes the invisible print visible and also creates optimal contrast.

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Application

Improving Contrast in Print OCR with IR Imaging

In the original image, a white backlight is used without a filter. When a MidOpt® BP850 Near-IR Bandpass Filter is placed over the lens and used with …

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Create Contrast Between Two Different Materialsof the Same Color

In this application we demonstrate the benefits of using a MidOpt® optical filter to help create excellent contrast in a machine vision inspection application in the infrared (IR), at the 830-850nm range.

Application

Create Contrast Between Two Different Materialsof the Same Color

Achieve contrast in machine vision inspection applications operating in the near-infrared (Near IR), at the 830-850nm range.

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Day/Night Imaging using Dual-Bandpass Filters

To achieve accurate color rendition in applications using a color camera during the day and infrared (IR) illumination at night, a Dual Bandpass Filter is an ideal solution. Dual Bandpass filters pass visible light and a narrow wavelength range in the near-IR spectrum that directly corresponds to the emission wavelength of the IR illumination that is used. This helps to ensure imaging results that are clear and accurate under most lighting conditions.

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Solutions

Day/Night Imaging using Dual-Bandpass Filters

To achieve accurate color rendition in applications using a color camera during the day and infrared (IR) illumination at night, a Dual Bandpass Filter can …

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