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Optikos Object Generators are used for MTF testing of optical systems. MTF testing requires that the lens under test image an object of known spectral and spatial content. The Optikos Object Generator serves this purpose. It consists of an illuminator that provides the spectral content and a target assembly containing multiple targets, such as pinholes and slits, each of particular spatial content.

Optikos offers two types of illuminators—visible illuminators and infrared illuminators. Each illuminator features integral condensing optics, optical filter holders, a regulated power supply, and associated cables.

Two types of target wheels are also offered—manual and automatic. Both target assemblies consist of an eight-position target wheel with user replaceable targets. The Automatic Target Wheel is controlled through OpTest™ Software to address automation requirements of production environments.

When ordering an Object Generator, please specify both the illuminator and target wheel. We encourage you to contact us so that one of our engineers can guide you in ordering the Object Generator that will best meet your specific needs.

OG-100 Visible Illuminator

Object Generator shown with OG-100 Visible Illuminator,WT-100 Target Wheel, OGA-40 Re-projection Mount, OGA-10 Object Generator Bracket, and 4 filter holders.

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Condenser optics are sufficiently separated to provide collimated space for optical filters. The lamp energy is relayed onto a target wheel which accepts multiple pinholes, slits, edge or resolution targets.

Object Generator shown with OG-100 Visible Illuminator and WT-100 Manual Target Wheel.

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Object generator consisting of OG-100 Visible Illuminator,WT-100 Manual Target Wheel, and OGA-40 Re-projection Mount.

The lamp filament is imaged onto the target of a target wheel.The distance between the condensing and objective lenses provides collimated space for optical filter holders.Attaching microscope objectives increases both the numerical aperture of the target and the spatial frequency range for MTF testing.

Specifications
Lamp type / 50 Watt tungsten-halogen (2 spare lamps provided)
Color temperature / 3200 K
Filters / 4 holders, 1 IR absorbing filter, and 1 iris diaphragm
Power Supply
Output / 0-30VDC
0-6 ADC
Regulation (load/line) / V = 0.05%/0.02%
I = 0.25%/0.1%
Ripple / < 1mV RMS
Meters / Two 3-digit displays ±0.5% accuracy
Power requirements / 115/230 ±10/20 VAC, 50/60 Hz (specify when ordering)

Optical Filters for OG-100

Part # Function
OFA-10 Photopic efficacy
OFA-20 Daylight color conversion (5500 K)
OFA-30 546 nm narrow band filter
OFA-40 RGB filter set

OG-200 Infrared Illuminator

The OG-200 Infrared Illuminator includes an integral chopper wheel for use with the SI-200 and SI-300 EROS™ Scanning Image Analyzers.

The OG-200 Infrared Illuminator is shown with the Object Generator Bracket and the WT-100 target wheel.Two infrared filters are included with the OG-200.

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Specifications

Lamp type / Infrared filament (1 spare filament provided)
Radiant temperature / up to 1000°C
Filters / 2 holders with bandpass filters
- MWIR (3-5 μm)
- LWIR (8-12 μm)

Power Supply

Output / 0-30 VDC
0-6 ADC
Regulation (load/line) / V = 0.05%/0.02%
I = 0.25%/0.1%
Ripple / < 1mV RMS
Meters / Two 3-digit displays ±0.5% accuracy
Power requirements / 115/230 ±10/20 VAC, 50/60 Hz (specify when ordering)

OG-300 Infrared Illuminator

This instrument is a version of the OG-200 Infrared Illuminator without the chopper wheel. It is designed for use with video image analyzers such as the Optikos VI-300.