Product

Glare Index (VGI) Kit

·A black dot surrounded by a uniformly bright background.

·For VIS/NIR testing (400nm - 1000nm).

·The sphere can rotate, allowing the black dot to be off-axis, with a maximum rotation angle of ±40 degrees.

·Stray light measurement is conducted in accordance with the ISO 9358 standard.

·Using a reference lens for verification, the accuracy can reach 0.1%.

·Sphere size options (selected based on focal length): 6-inch sphere, 10-inch sphere, 20-inch sphere.

·It can be provided as an upgrade option for the existing LensCheck system or as a standalone system.

Glare Spread Function (GSF) Upgrade Kit

·The functionality of the LensCheck VIS system has been expanded to measure the glare spread function (GSF) of the tested lens according to ISO 9358 standards.

·The measurement module includes the following hardware upgrades: a 40X 0.65NA objective lens with a precision pinhole field diaphragm; and a light guide adapter equipped with a diffuser and a reduced exit aperture.

·For VIS/NIR testing (400nm - 1000nm).

·The dynamic range of broadband visible light test spectra is 10⁻⁶ or higher.

·It is only available as an upgrade option for new or existing LensCheck VIS systems.

When the LensCheck VIS system operates in a dark environment, eliminating all stray background illumination, its measurement accuracy and repeatability reach their optimal state. This is particularly crucial for high dynamic range measurements, such as the Glare Spread Function (GSF). The LensCheck housing is specifically designed to meet this need, eliminating the need for a dedicated darkroom for lens testing.

·Create a dark environment around the lens under test to optimize measurement accuracy and repeatability.

·Eliminate the impact of airflow generated by the HVAC (Heating, Ventilation, and Air Conditioning) system in the laboratory or the fan filter unit in the clean room.

·During the installation of the lens and calibration, full contact with the instrument is allowed.

·The most compact dimensions (approximately 1050 mm in length, 815 mm in width, and 560 mm in height when opened).

The standard finite conjugate platform can be constructed as an independent test bench solely for finite conjugate testing, or it can be added as an upgrade option to the infinite conjugate LensCheck VIS system. When used as an upgrade option for the LensCheck system, the image analyzer, image analyzer mount, and lens mount from the LensCheck system need to be removed and installed onto the finite conjugate platform. Through a simple upgrade using the OpTest 7 software, the computer of the LensCheck system can run both testing devices.

·20X and 60X physical re-projection objectives.

·The object has an electric X-axis and a manual Z-axis.

·500mm mounting rail, adaptable to various testing devices.

·Adjustable LensCheck tower mount with manual X, Y, Z axis platform and C-type lens mounting plate.

The small-sized limited conjugate platform is designed to measure the image quality parameters of lenses specifically tailored for near conjugate imaging (with an object distance less than 300mm). It can be configured as a standalone test bench or added as an upgrade option to the standard LensCheck system.

·Suitable for testing lenses used in medical imaging and other surgical applications, cell imaging systems, low-power microscopes, finite conjugate objectives (objective lens/tube lens pairs), detection or short TTL machine vision optics, and macro lenses.

·20X and 60X physical re-projection objectives.

·The object has an electric X-axis and a manual Z-axis.

·500mm mounting rail, adaptable to various testing devices.

·Adjustable LensCheck tower mount with manual X, Y, Z-axis platform and C-mount lens plate.

The adjustable conjugate upgrade kit can be added to new or existing LensCheck systems, enabling a system to perform both infinite and finite conjugate testing on small lenses. Unlike other finite conjugate platforms provided by Optikos, the adjustable conjugate upgrade kit allows testing of both positive and negative object conjugates (real and virtual images of the unit under test), with an object distance range from -1m to infinity and then to +1.2m.

Specification of finite conjugate system

The LensCheck™ Thermal Module is an accessory of the LensCheck™ VIS Lens Testing System, designed for testing lenses within a specific temperature range, typically from -40°C to 105°C. This thermal module features two chambers, one for small lenses with a maximum field of view* of ±80° (TC - 1010/TC - 1011) and another for lenses with a maximum field of view of ±40° (TC - 1050). The recently added TC - 1065 chamber enables the testing of larger lenses, broadening the scope of automotive lenses eligible for characteristic analysis.

The actual field of view depends on the specific installation characteristics of each lens

The modular system comprises the following components:

·Hot chamber (multiple options)

·Sky hook (hanging hose)

·control manifold

·Julabo Presto temperature controller (multiple options available)

Measurement types include:

·Change in back focal length (FFL)

·Automatic measurement on and off the axis

·Modulation Transfer Function (MTF)

·Through Focus MTF (Through Focus Modulation Transfer Function)

·Distortion

·Field curvature

·Effective focal length (EFL) 

·Off-axis paraboloidal mirror: 50mm clear aperture; 750mm focal length; surface accuracy of λ/10 after installation; protective aluminum coating.

·Replace LensCheck refractive collimator.

·Provide a collimated beam free from aberrations to enhance chromatic aberration measurement

·Factory calibration to 8-position target wheel

· Provide interferometric measurement and identification data

·50mm clear aperture, 150mm focal length

·Replace the standard 355mm focal length long-wave infrared refractive collimator

·Long-wave infrared lens for shorter focal length

·The focal length range of the tested lens is 2.5 - 25mm

·When installed on a long-wave infrared 150mm collimator, it can reduce the minimum value of the entrance pupil diameter and focal length range of the tested lens

·Entrance pupil diameter range: 0.5 - 2.5mm

·Focal length range: 0.5 - 2.5mm

· Equipped with a double-door that can be opened to both sides, allowing the use of a 150mm collimator when the reducer is not in use; it also serves as a safety guard when the lens under test collides with the reducer

The factory calibrates and verifies using a small pupil detection lens

Standard LensCheck lens adapter

LensCheck tower mount (bracket and lens mounting tower) + C-type mounting plate (1 inch x 32 threads per inch), provided with the LensCheck system

Other optional accessories：

·White adapter board

·S-shaped mounting base - M12 x 0.5mm

·Customized centering (small caliper type) lens mount

·Canon EF mount

·D-type mounting base 0.625"-32

·Leica M mount

·M13 mounting base M13 X 1mm

·M16 mounting base, M16 X 0.5mm

·M39 mounting base, M39 X 0.977mm

·M42 mounting base, M42 X 1mm

·Mitutoyo mounting base M 26 X 0.706mm

·Nikon F mount

·Nikon mounting adapter M25 X 0.75mm

·Olympus OM mount

·Bentley K mount

·DIN standard mounting base 0.800'' x 36 threads per inch (original RMS)

·S-shaped mount lens bracket M12 X 0.5

·SIGMA SA mount

·Thorlabs SM05 0.535"-40 threads/inch

·Horlabs SM1 1.035"-40 threads/inch

·Thorlabs SM2 2.035"-40 threads/inch

·Thorlabs SM30 M30.5x0.5牙/英寸

·T-shaped mounting base M42 X 0.75mm

·ZEISS mounting base M27x0.75mm

- What if your lens mount is not listed? We can provide customized lens adapters upon request.

·Objectives: Uncalibrated 4X 0.10NA achromatic DIN objective (for easy image positioning); calibrated 10X 0.25NA achromatic DIN objective; calibrated 20X 0.20NA achromatic DIN objective; calibrated 60X 0.85NA achromatic DIN objective.

·Achromatic Objective: Calibrated 20X 0.80NA flat-field achromatic objective and tube lens; calibrated 40X 0.95NA flat-field achromatic objective and tube lens; diffraction-limited visible light lens for verifying system performance; 50mm EFL, f/4; factory calibrated and mounted on a rail bracket for quick setup.

·Visible light detection lens AL-050: a diffraction-limited LWIR lens used to verify system performance; 25mm EFL, f/1.5; factory calibrated and mounted on a rail bracket for quick setup.

·Rotating lens mount: High-speed electric platform for rotating the lens around the optical axis; measurement system capable of continuous 360-degree rotation; adjustable in X and Y directions (±1mm) for aligning the lens or lens mount with the rotation axis; tilt and pan adjustment (±1°) for aligning the lens or lens mount with the rotation axis; includes a micrometer for aligning the mechanical reference on the lens or lens mount; compatible with standard LensCheck rotating platform guides; includes an adapter plate for connecting with the standard LensCheck tower mount adapter plate.