OptiTest®
Visual optical measurement instruments
The optical testing usually requires a wide range of configurations specific to the application or the parameters to be measured.
The large variety of the set-ups is, however, a combination of basic optical instruments known as collimator, industrial telescope, diopter telescope, dynameter, autocollimator as well as mechanical hardware for positioning of the basic optical instruments. Reticle and filter changers are optionally available.
To cover all conceivable testing set-ups required by fast changing applications, the components of OptiTest® line are designed as a modular system.
Cost effectivity
The modular design allows highest cost effectiveness due to identical basic components in each configuration.
Flexibility
Unlimited flexibility in test setups with basic components to cover current and future applications. The basic components are interchangeable and compatible with each other.
Diversity
TRIOPTICS offers autocollimators, collimators and telescopes with different focal lengths and objective tube diameters. In addition, there is a large selection of reticles, which can also be custom-made if required.
Autocollimators
The Autocollimator is a single instrument combining the functions of a collimator and a telescope. It detects small angular displacements of a mirror by means of its own collimated light. TRIOPTICS offers autocollimators with different focal lengths depending on the application. You can choose between a fixed focus setting with infinite setting and a variable focus setting with finite distance setting. Both versions are available with straight or 90° view.
Autocollimator
Autocollimators with
fixed focus setting
The two reticles of an autocollimator with fixed focus setting are positioned in the focal plane of the corrected objective lens, so that the emerging beam is parallel. This usual configuration is known as infinity setting, i.e the autocollimators are focused at infinity.
Focusing Autocollimator
Autocollimators with variable
focus setting
The reticles of a focusing Autocollimator (focusing Autocollimation telescope) can be moved out of the focal plane of the objective lens so that the autocollimator can be focused at finite distances.
Large Field Autocollimator
Large Field Autocollimators with
fixed focus setting
To meet customer requirements for testing optical instruments with large field of view, TRIOPTICS developed a unique line of autocollimators.
Focusable Large Field Autocollimator
Large Field Autocollimators with variable focus setting
The reticles of a focusing autocollimator can be moved out of the focal plane of the objective lens so that the autocollimator can be focused at finite distances.
Collimators
TRIOPTICS offers different collimators depending on the measurement task. As a standard the collimators are set up in infinity setting meaning that they project the image of a reticle to infinity. TRIOPTICS offers collimators with different focal lengths depending on the application. You can choose between a fixed and a variable focus setting. Both versions are also available with a very large field of view.
Collimator
Collimators with fixed focus setting
The Collimator is an optical instrument consisting of a well corrected objective lens with an illuminated reticle at its focal plane.
The emerging beam is parallel (collimated beam), so that the image of the reticle is projected at infinity.
Focusing Collimator
Collimators with variable focus setting
The reticle nozzle of the focusing collimator (finite distance setting) is mounted on an extendable tube to allow the focal point to be adjusted. This makes it possible to achieve finite and infinite distance settings.
Large Field Collimator
Large field collimators with fixed focus setting
To meet customer requirements for testing optical instruments with large field of view, TRIOPTICS developed a unique line of collimators providing a significant increase of field of view.
Focusing Large Field Collimator
Large field collimators with variable focus setting
The focal point setting is variable and both a finite and infinite distance setting is possible.
Telescopes
TRIOPTICS offers different telescopes depending on the measurement task. As a standard the Industrial Telescopes are set up in infinity setting meaning that they image an object at a far distance into the image plane of the objective lens. TRIOPTICS offers industrial telescopes with different focal lengths depending on the application. They are available for straight or 90° angled viewing
Telescope
Industrial Telescope with fixed focus setting
The Industrial Telescope is preset to infinity and images an object at a far distance into the image plane of the objective lens. The image is then magnified and visually inspected by an eyepiece. For measurement purposes usually a graduated reticle is located in the image plane. The magnification of the Industrial Telescope is given by the ratio of the objective focal length and the eyepiece focal length.
Focusing Telescope
Telescope with variable focus setting
Attaching a draw out tube to the reticle adapter to move the reticle out of the focal of the objective lens, the standard telescope becomes a focusing telescope. Depending on the location of the reticle relatively to the focal plane, it results a real or a virtual image at a finite distance.
Large Field Telescope
Large Field Telescope with fixed focus setting
To meet the demands that customers are placing on the testing of optical instruments with a large field of view, TRIOPTICS has developed a new and unique range of test telescopes that are characterized by a significantly larger field of view.
Reticles
Types of reticles
There are reticles for collimators and reticles for telescopes (Eyepiece-Reticle). For both types you have to distinguish between reticles for standard field of view and large field of view corresponding to the instrument you have chosen.
Upgrades & Accessories
In addition to the OptiTest® collimators, telescopes and autocollimators, TRIOPTICS offers a large range of opto-mechanical accessories, often required for certain standard applications.
Clamp fixture:
- Clamp fixture D38
- Clamp fixture D57
- Clamp fixture D115
Adjustable holders:
- Adjustable holder D38
- Adjustable holder D57
- Adjustable holder D115
- Adjustable holder D140
Stativ:
- Stativ/Stand
Stands:
- Manual Stand for D38
- Manual Stand for D57
- fixture for wedge measurement
- Stand
V-Prisma (Magnetprisma):
- V-Prisma für Wellen D20 bis D50
- V-Prisma für Wellen D50 bis D150
Mirrors and optical flats in mount:
- Mirrors in mount D38/D57
- Mirrors in mount D115/D140
- Optical flat in mount for D38/D57
- Optical flat in mount for D115/D140
Adjustable mirrors and optical flats in mount:
- Adjustable mirrors for D38/D57
- Adjustable mirrors for D115/D140
- Adjustable optical flat for D38/D57
- Ground plate
- Ground plate with stop bar
Deflecting mirror
- 45° deflecting mirror for D38
- 45° deflecting mirror for D57
- 45° deflecting mirror for D115
- Penta Prism 50mm +/-1´ in holder
- Master Penta Prism in holder, Aperture 1 3/4 inch x 1 7/8 inch
- Master Penta Prism in holder, Aperture 1 3/4 inch x 1 7/8 inch
- 90 degree optical square with adjustable mount
Laser prealignment tool:
- Laser prealignment tool D57
- Laser prealignment tool D115/D140
Viewfinder prism:
Polygons:
- Polygon 12 sides in holder, 5 second accuracy
Reference prism:
- 90° reference prism in mount
Calibration wedges:
- Calibration wedge 10 arcmin
- Calibration wedge for TriAngle UltraSpec 10 arcmin, with integrated band-pass filter
Other accessories
- Tool for rotary axis measurement
- precision level
- remote control for TA
Knowledge Base
Collimator
The Collimator is an optical instrument consisting of a well corrected objective lens with an illuminated reticle at its focal plane.
The emerging beam is parallel (collimated beam), so that the image of the reticle is projected at infinity. The collimator is usually set up in this way known as infinity adjustment (setting).
When moving the reticle out of the focal plane of the objective lens, the shape of the emerging beam will change:
- Moving the reticle away from objective lens will result in a convergent beam. The image of the reticle is real and projected at a finite distance.
- Moving the reticle toward the objective lens will result in a divergent beam. If the beam diverges, a virtual image is produced at the apparent crossing point of the beam rays. This point is also located at a finite distance. This adjustment of the collimator is known as finite distance setting.
The collimator is often used as a test chart projector for the inspection of infinity corrected objective lenses, e.g. photography lenses. In combination with a telescope, the collimator can also be used for aligning machine elements along the line of sight
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Collimator
Collimator – Infinity setting
Collimator – Distance settings
Industrial Telescope
The telescope is an optical tool that images an object at a far distance – usually preset to infinity – into the image plane of the objective lens. The image is then magnified and visually inspected by an eyepiece. For measurement purposes usually a graduated reticle is located in the image plane. The magnification of the telescope is given by the ratio of the objective focal length and the eyepiece focal length.
When the incoming beam is parallel, the image observed through the telescope is located at infinity i.e at a long distance. This set up in is known as infinity setting.
Similar to collimators, the telescopes can be focused at finite distances. Attaching a draw out tube to the reticle adapter to move the reticle out of the focal of the objective lens, the standard telescope becomes a focusing telescope. Depending on the location of the reticle relatively to the focal plane, it results a real or a virtual image at a finite distance.
Telescope
Autocollimator
The autocollimator combines both optical tools, the collimator and the telescope into one instrument using a single objective lens. Both beam paths are separated by using a beam splitter.
The autocollimator is a very sensitive angle measuring device and is thus used for the precise angular adjustment of optical or machine components. Due to the collimated beam (infinity adjustment) the measurement results are independent from the distance to the object under test. The operating principle is explained in the following.
Like in the collimator the image of the illuminated object reticle is projected by the objective lens to infinity. In some distance, the collimated beam is reflected back from a mirrored surface. If the mirror surface is tilted by an angle α with respect to the optical axis, the reflected beam will enter the objective lens with an angle 2α. This leads to a shift d of the image in the image plane which can be calculated with the objective focal length f giving d = 2α x f or α = d/( 2f ). Thus, the sample angle is directly proportional to the measured shift in the image plane (small angles assumed). The resolution of an autocollimator increases proportionally and the angular field of view reciprocally with the focal length of the objective lens.
Visual autocollimator
Operating principle of an autocollimator
