DE102013212097A1 - Collimator device and method for testing and adjusting at least one optical device - Google Patents

Abstract

The invention relates to a collimator device (1) for testing and adjusting at least one optical device (9) in at least one useful wavelength range by means of at least one test pattern (2), comprising at least: - a housing (3) which at least approximates radiation in the at least one useful wavelength range and at least one region (4, 5) which is at least partially transparent for radiation in the at least one useful wavelength range, at least one at least partially transparent region (5) having the at least one test pattern (2), and at least one at least partially transparent Area an entrance area (4), - at least one collimator element (6) for generating a parallel beam path, and - an optical beam path (7), which at least one test pattern (2) on the at least one collimator element (6) through at least one inlet region (4) virtually in the une a contrast of the at least one test pattern (2) is generated by an outside of the housing (3) existing radiation in the at least one Nutzwellenlängenbereich.

Description

The invention relates to a collimator device and to a method for testing and adjusting at least one optical device in at least one useful wavelength range by means of a collimator device.

In order to be able to measure or check the performance of the optical imaging and / or the optical recording of optical devices, in particular cameras or thermal imaging devices, a suitable test pattern, a so-called target, must be provided for image acquisition. Since such geometric resolution tests are not carried out with a focus in the near field, but in the area of observation at a great distance, the representation of the test pattern must also take place there or at infinity. However, a resulting placement of the test pattern at a great distance would require an oversimplified large test pattern and would therefore be logistically very complicated or not possible.

To solve this problem, the use of so-called collimators is known, which make the appearance of such test patterns small targets visually appear as if they were positioned at a very great distance. The length of such collimators is nevertheless relatively low. The optical devices to be checked are often installed in large systems or vehicles, so that a simple transport to a measuring device is usually not possible. In order to still allow a review, portable or mobile collimators, especially so-called field collimators, used that can be easily attached to an optical system and thus allow a measurement on site, without having to expand the optical devices. Since day vision cameras are often installed together with thermal imagers in an optical system, flexible use of the collimator in several wavelength ranges is desirable. In addition to the visual range, the UV range and the range of heat radiation or infrared range, all intervening wavelength ranges are also important.

Known collimators, which are particularly suitable for several wavelength ranges, require an independent power supply and are also expensive. Field or field deployments can make it difficult or even impossible to provide a power supply. Often logistical problems have to be solved first of all.

The present invention is therefore based on the object to provide a collimator of the type mentioned, which avoids the disadvantages of the prior art, in particular portable, flexible adaptable to different optical devices and can be used without a power supply for different wavelength ranges.

• – ein Gehäuse, welches Strahlung in dem wenigstens einen Nutzwellenlängenbereich wenigstens annähernd oder gänzlich absorbiert und welches wenigstens einen für Strahlung in dem wenigstens einen Nutzwellenlängenbereich zumindest teilweise transparenten Bereich aufweist, wobei wenigstens ein zumindest teilweise oder ganz transparenter Bereich das wenigstens eine Testmuster aufweist, und wobei wenigstens ein zumindest teilweise transparenter Bereich ein Eintrittsbereich ist,
• – wenigstens ein Kollimatorelement zur Erzeugung eines parallelen Strahlenverlaufs, und
• – einen optischen Strahlengang, welcher das wenigstens eine Testmuster über das wenigstens eine Kollimatorelement durch den Eintrittsbereich virtuell in das Unendliche abbildet, wobei ein Kontrast des wenigstens einen Testmusters, insbesondere zur Erfassung des wenigstens einen Testmusters durch das wenigstens eine optische Gerät, durch eine außerhalb des Gehäuses vorhandene Strahlung in dem wenigstens einen Nutzwellenlängenbereich erzeugt wird.

This object is achieved according to the invention by a collimator device for checking and adjusting at least one optical device in at least one useful wavelength range by means of at least one test pattern, which comprises at least:

• A housing which at least approximately or completely absorbs radiation in the at least one useful wavelength range and which has at least one region which is at least partially transparent to radiation in the at least one useful wavelength range, at least one at least partially or completely transparent region having the at least one test pattern, and at least one at least partially transparent area is an entry area,
• - At least one collimator element for generating a parallel beam path, and
• An optical beam path which virtually images the at least one test pattern via the at least one collimator element through the entry region into the infinite, wherein a contrast of the at least one test pattern, in particular for detection of the at least one test pattern by the at least one optical device, by an outside the Housing existing radiation is generated in the at least one Nutzwellenlängenbereich.

The collimator device according to the invention can advantageously be used in several useful wavelength ranges, in particular at least between the visual range and the heat radiation range. By using the radiation present outside the housing in the at least one useful wavelength range for generating the contrast, operation without a separate power supply is possible. In comparison with known available collimator systems, the collimator device according to the invention is considerably less expensive to produce. Furthermore, a simple replacement of the test pattern for adaptation to different resolutions, fields of view and wavelength ranges of the optical devices to be tested is possible. Due to the unnecessary power supply also results in a lower maintenance and a more compact design. The measurements are independent of the weather or the atmosphere feasible and are not affected by this. The collimator device according to the invention can be modular to almost all built-optical devices, especially cameras, are attached.

By dispensing with a heat source or a so-called black body (black body) eliminates the power supply and a complex control of the same. The collimator device according to the invention can therefore be designed portable or mobile. The contrast required for detecting the at least one test pattern by the at least one optical device or the camera is generated in a simple manner by a radiation present outside the housing in the at least one useful wavelength range. The test pattern is first imaged onto a collimator element, which then in turn images the test pattern at virtually infinite distance onto the optical device to be checked. The test pattern has transparent areas, which normally lead to the heat source or the black body in known collimators. However, this requires a power supply and a complex control. In contrast, the further beam path in the collimator device according to the invention leads out of the collimator device through the at least one transparent region, in particular upwards. As the cold sky is mostly visible when looking up, this method generates a temperature difference for a thermal image target. If the system is used, for example, inside buildings, the required temperature difference or the required contrast can be ensured in an advantageous manner by a suitable view of the ceiling or by a suitable covering of the beam path by, for example, a cold or warm object. Since the polarity of the temperature difference, i. H. whether the test pattern is warmer or colder than the background, does not play a role in the measurement, basically both variants are conceivable.

So if it is a day vision test pattern, the bright sky can already be used to generate the needed contrast. When used in rooms, the lighting located there can serve to create a contrast. In the case of a night use even a simple lighting, for example by a flashlight or the like, take on this task. If the temperature difference or the visual contrast is too high, for example, the contrast can be adjusted accordingly by means of additional lenses or gray filters.

Since there are no significant distances through the atmosphere between the camera and the collimator in the collimator device according to the invention-unlike the known test using large test patterns in the scene, a measurement is advantageously possible regardless of the atmospheric conditions.

It is a purely passive structure, which is why the operation is ensured without power supply and the maintenance is limited to keeping clean the collimator. Due to the lack of a black body and corresponding control electronics as well as the availability of commercially available mirrors a cost-effective design is feasible. The optical beam path can be made longer than twice the length of the collimator device. As a result, a compact design can be realized. Since the test pattern generates its contrast through a translucent part, a wavelength independence is ensured here, in particular, is taken to ensure that the used completion window for the required wavelengths is permeable.

Since the optical device to be checked is located, so to speak, in the parallel beam path of the collimator, the distance to the entrance window is not critical. For this reason, a mechanical interface can be placed on the collimator that can be modularly attached to all available and future cameras via a suitable adapter system.

It is advantageous if the optical beam path has at least one optical deflection element, by means of which the at least one test pattern is imaged virtually on the at least one collimator element and from there through the at least one entry region into the infinite.

As a result, a compact design of the collimator device can be realized.

The at least one at least partially transparent region and / or the inlet region may be an opening or a window. The window or the entrance window can consist of a material suitable for the respective wavelength range of use. For the thermal range z. As germanium or silicon can be used. In addition, a more cost effective solution can be realized by the use of polyethylene (PE), for example in the form of a film or a plate.

According to the invention, it may further be provided that the entry region is an entry window, wherein the at least one test pattern is arranged on a rear side of the entry window facing the interior of the housing. The test pattern can be placed on the back of the entrance window and the beam path from the deflection element can be imaged back onto the entrance window. There if the test pattern is then optionally directly in front of the front lens of the optical device or its entrance pupil, it is not directly imaged by this. This advantageously simplifies the structure, since no second window or no second transparent area is necessary. However, the provision of sufficient contrast is made more difficult because only the temperature difference between the entrance window of the collimator and the housing of the optical device to be inspected contributes to the generation of the contrast.

It is advantageous if a structure of the test pattern in the at least one at least partially transparent region is formed by a combination of a plurality of materials having different emission coefficients. As a variant, a test pattern can be used, which is not broken through, but whose structure is achieved by the appropriate choice of materials with different emission coefficients (ε). In this embodiment of the test pattern, it is advantageously possible to dispense with temperature differences, since the required contrast is only achieved by the different heat radiation emission of the materials used.

The at least one collimator element may be at least part of a paraxial mirror, in particular off-axis. As Kollimatorelement comes a so-called off-axis or off-axis parabolic mirror, as it is known from television technology, with a corresponding focal length f in question. The parabolic mirror can be formed as it were off-axis as part of a larger parabolic mirror to avoid adverse shadowing. The central axis of the parabolic mirror can therefore be moved accordingly.

The overall length of the parabolic mirror can be designed for about half the focal length (f / 2). The parabolic mirror can be coated with a reflective transfer film, which improves the surface of the mirror in terms of reflection and surface finish. Such a film can be applied in a simple manner in a water bath. However, there are other variants such. B. thermal transfer or the like conceivable.

Of course, as a collimator also other optical elements such. As lenses or the like can be used.

According to the invention, it may further be provided that the at least one optical deflecting element is designed as a reflective mirror element. By using mirrors as optical deflection elements, wavelength independence can advantageously be achieved. For example, glass mirrors can be used, which guarantees a high reflectivity in the thermal and visual Nutzwellenlängenbereich.

In the examination and adjustment, the entry region of the collimator device can face an entry region of the at least one optical device, in particular a front lens, an objective and / or an entrance pupil of the at least one optical device, and / or in the region or in the vicinity of the entry region of the at least one optical device can be arranged.

By these measures, there are no significant distances through the atmosphere between the collimator and the optical device under test. As a result, the measurement is independent of existing atmospheric conditions, such as rain, fog, snow, smoke, dust or the like.

The at least one optical device can be adaptable by means of a ring tensioner or by means of flange surfaces.

The at least one optical device may be a thermal imaging device or a camera, in particular in the visual wavelength range or a combination thereof. With appropriately suitable framework conditions and measures, the collimator device according to the invention can be used in cameras both in the visual and / or thermal imaging region, for example in the long-wave infrared range (LWIR), medium-wave infrared range (MWIR), very long-wave infrared range (VLWIR), far-infrared range (FIR), short-wave Infrared range (SWIR) and in the near infrared (NIR) as well as in the ultraviolet range.

It is advantageous if an optical scattering element, in particular a diffusing screen or a diffuser, is arranged in the region of the test pattern. As a result, a homogeneous distribution of the temperature or the brightness can be achieved. The optical scattering element can be designed to be suitable for the respective Nutzwellenlängenbereich. Accordingly, the scattering element is arranged in the beam direction of the radiation present outside the housing in front of the test pattern in order to achieve a scattering of this radiation.

Claim 12 specifies a method for testing and adjusting at least one optical device in at least one useful wavelength range by means of the collimator device according to the invention.

Advantageous embodiments and modifications of the invention will become apparent from the dependent claims. Below are based on the drawing principle described embodiments of the invention.

Show it:

1 exemplary representations of test patterns in the thermal image area;

2 a simplified schematic representation of a collimator according to the invention according to a first embodiment;

3 a simplified schematic representation of a collimator according to the invention according to a second embodiment;

4 a simplified schematic representation of a collimator according to the invention according to a third embodiment;

5 a simplified front view and a simplified side view of a housing of the collimator device according to the invention;

6a a simplified sectional side view of a ring tensioner adapter for connecting the collimator device according to the invention with an optical device;

6b a simplified view of a first attachable to the collimator device according to the invention interface surface of the ring tensioner adapter 6a ;

6c a simplified top view of the ring tensioner adapter 6a ;

7a a simplified view of a first attachable to an optical device flange of a Flanschflächenadapters for connecting the collimator device according to the invention with an optical device;

7b a simplified side sectional view of the Flanschflächenadapters 7a ; and

7c a simplified view of a second attachable to the collimator device according to the invention flange of the Flanschflächenadapters 7a ,

1 shows two examples of test patterns 20 . 20 ' in the thermal image area, so-called IR targets. The test patterns 20 . 20 ' have corresponding structures 20a . 20a ' for testing and adjusting optical devices, especially cameras.

In 2 is a collimator device according to the invention 1 for testing and adjusting at least one optical device 9 (in 2 indicated by dashed lines) in at least one useful wavelength range by means of at least one test pattern 2 shown. The collimator device 1 has an in 2 Dashed lines indicated housing 3 which at least approximately absorbs radiation in the at least one useful wavelength range and which two at least partially or completely transparent regions for radiation in the at least one useful wavelength range 4 . 5 having. The first transparent area 4 is an entrance area, which in the present embodiment as an entrance window 4 is executed. The entrance window 4 is obliquely arranged to avoid a narcissistic effect, in which a detector of the optical device 9 could capture his own reflection. The second transparent area 5 has the test pattern 2 up and is as a window 5 educated. The entrance window 4 and the window 5 have a suitable for the respective Nutzwellenlängenbereich material. For example, germanium or silicon can be used as material for the thermal range or infrared range. In addition, a more cost effective solution can be realized by the use of polyethylene (PE), for example in the form of a film or a plate. For applications in the purely visual wavelength range, a variety of commercially available glasses can be used. In addition, there are suitable materials that are transparent from the visual to the thermal range and thus enable a universal structure. Such materials are, for example, calcium fluoride (CaF ₂ ), zinc sulfide (ZnS), zinc selenide (ZnSe), etc. In the present embodiment, the housing is 3 a closed and stable housing. How out 2 further apparent, the collimator device 1 a collimator element 6 for generating a parallel beam path. Furthermore, the collimator device comprises 1 an optical beam path 7 which the test pattern 2 over the collimator element 6 through the entrance window 4 represents virtually in the infinite, with a contrast of the test pattern 2 by a non-illustrated outside of the housing 3 existing radiation is generated in the at least one Nutzwellenlängenbereich.

The collimator element 6 is executed in the present embodiment as part of an off-axis parabolic mirror.

In other embodiments, not shown, the at least partially transparent areas or the entrance window 4 or the window 5 be designed as a simple opening.

A structure of the test pattern 2 can be formed by a combination of several materials with different emission coefficients. So z. B. the structures 20a . 20a ' in 1 a different emission coefficient than the respective hatched remaining part of the test pattern 20 . 20 ' have, whereby for the optical device 9 a sufficient contrast to the recognition of the structures 20a . 20a ' is produced. Even if the structures 20a . 20a ' and the remaining part of the test pattern 20 . 20 ' have the same temperature, the optical device takes 9 the different temperatures caused by the different emission coefficients.

How out 2 can be seen, the optical beam path 7 an optical deflecting element 8th on, which is designed as a reflective mirror element, in particular as a glass mirror, and by means of which the test pattern 2 on the collimator element 6 and from there through the entrance window 4 is portrayed virtually in the infinite. By the execution of the deflecting element 8th As a glass mirror, a high reflectivity can be ensured both in the thermal and in the visual wavelength range.

The optical device 9 For example, a thermal imaging device or a camera z. B. in the visual wavelength range. The optical device 9 may have a Nutzwellenlängenbereich both in the visual and / or in the thermal imaging area, for example in the long-wave infrared range, medium wave infrared range, very long-wave infrared range, far infrared range, short-wave infrared range and in the near infrared range and in the ultraviolet range. Also suitable combinations are conceivable.

How out 2 can be seen further, in the area of the test pattern 2 an optical diffuser or a diffuser, preferably a diffuser 10 be arranged to achieve a homogeneous distribution of the temperature or the brightness. The diffuser 10 is behind the test pattern 2 ie on the inside of the housing 3 opposite side of the window 5 , In other words, the diffuser 10 in the beam direction of the outside of the housing 3 existing radiation in the at least one useful wavelength range before the test pattern 2 be arranged.

How out 2 can be seen, is the entrance window 4 the collimator device 1 when testing and adjusting one as the front lens 9a trained entrance area of the optical device 9 facing and / or in the front lens area 9a of the optical device 9 arranged.

In the figures, functionally identical elements are provided with the same reference numerals.

3 shows a second embodiment of the collimator device according to the invention 1' in which no deflecting element 8th is provided. This results in the beam path 7 ' ,

In 4 is a third embodiment of the collimator device according to the invention 1'' shown. A test pattern 2 '' is on a the inside of the case 3 the collimator device 1'' facing back 4a '' an entrance window 4 '' arranged. By two deflecting elements 8.1 and 8.2 becomes the test pattern 2 '' back to the entrance window 4 '' displayed. Because the test pattern 2 '' near the front lens 9a or in the area of the entrance pupil of the optical device 9 is not displayed directly. As a result, a simplified structure can be realized. The test pattern 2 '' is in an optical beam path 7 '' from the first deflecting element 8.1 on the second deflecting element 8.2 and from there to the collimator element 6 pictured which the test pattern 2 '' through the entrance window 4 '' virtually in the infinite, ie on the front lens 9a of the optical device 9 , pictures.

The in the 2 to 4 illustrated test pattern 2 . 2 '' can z. B. as in 1 shown with corresponding structures 20a . 20a ' be executed.

In a method for checking and adjusting the optical device 9 in the at least one useful wavelength range by means of the collimator device 1 . 1' . 1'' becomes the collimator device 1 . 1' . 1'' so to the optical device 9 adapted that the entrance area or the entrance window 4 . 4 '' the collimator device 1 . 1' . 1'' at least approximately in the region of the entry area or the front lens 9a of the optical device 9 arranged and the entrance area of the optical device 9 is turned. In further embodiments, not shown, it may be at the entrance area of the optical device 9 also around a lens or an entrance pupil of the optical device 9 act. The optical beam path 7 . 7 ' . 7 '' the collimator device 1 . 1' . 1'' forms the test pattern 2 . 2 '' the collimator device 1 . 1' . 1'' over the collimator element 6 through the entrance window 4 . 4 '' the collimator device 1 . 1' . 1'' virtually in the infinite, in particular on the entrance area of the optical device 9 from. On to capture the test pattern 2 . 2 '' through the optical device 9 required contrast of the test pattern 2 . 2 '' is through an outside of the case 3 the collimator device 1 . 1' . 1'' existing radiation generated in the Nutzwellenlängenbereich.

The following are based on the 5 to 7c mechanical interfaces for connecting the collimator device according to the invention 1 . 1' . 1'' with the optical device 9 explained in more detail.

In 5 is the case 3 the collimator device 1 . 1' . 1'' In the left part of the picture there is a front side of the housing 3 with an interface area 3a the collimator device 1 . 1' . 1'' for modular adaptation to the optical device 9 shown. The side lengths of the interface surface 3a can be between 50 mm and 2000 mm, in particular 300 mm, depending on the application. In the present case is an interface surface 3a of 300mm x 300mm, with a hole pattern exemplified at 260mm x 260mm. This may vary according to the size of the collimator device 1 . 1' . 1'' be adjusted. In the right part of the picture 5 is a side view of the collimator device 1 . 1' . 1'' shown. For easy transport is a carrying handle 3b on the housing 3 intended. The length of the collimator device 1 . 1' . 1'' is in 5 exemplary 700 mm. The actual lengths are in turn dependent on the application and thus on the required focal length and can thus be between 200 mm and 5000 mm or even higher.

Adaptation according to the 6a to 7c allows easy attachment of the collimator device 1 . 1' . 1'' to the optical device to be tested 9 or in the present case to a camera. Due to the mechanical design of the camera to be tested, the adaptations differ accordingly. By way of example, the show 6a to 6c for a camera with a cylindrical optic tube a connection of the interface surface 3a by means of a ring tensioner adapter 11 , A first interface area 11a the ring tensioner adapter 11 has a modular interface designed as a centering flange 12 to the interface surface 3a of the housing 3 the collimator device 1 . 1' . 1'' on. By means of this modular interface 12 the ring tensioner adapter 11 becomes the ring tensioner adapter 11 at the collimator device 1 . 1' . 1'' attached. The dimensions of the interface surface 11a can measure the dimensions of the interface surface 3a the collimator device 1 . 1' . 1'' correspond to or be adapted to this. A second interface area 11b the ring tensioner adapter 11 has a ring tensioner 13 on, with the help of the collimator device 1 . 1' . 1'' can be attached to a not shown cylindrical optical tube of the camera to be examined. For example, such a ring tensioner adapter 11 be provided for a camera with a diameter of the optics tube of 130 mm. The collimator device 1 . 1' . 1'' is, however, basically adaptable to all other optical diameters.

In the 7a to 7c is a flange adapter 14 for connecting the collimator device 1 . 1' . 1'' with camera systems without a raised optic tube via corresponding first and second flange surfaces 14a . 14b shown. The 7c shows the first flange surface 14a , which for connection to the collimator device 1 . 1' . 1'' or with their interface surface 3a is provided. The flange surface 14a has a designed as a centering flange modular interface 15 on. 7a shows the second flange 14b for connection to the camera or optical device to be checked 9 , 7b shows a simplified sectional view of the Flanschflächenadapters 14 ,

The optical device 9 or the camera is thus by means of a ring tensioner 13 or by means of flange surfaces 14a . 14b adaptable. If the structure to be tested has a freestanding camera (with a round or square housing), it can be placed in the 6a to 6c shown ring tensioner adapter 11 be used. For angular housings edge protection elements (not shown) can also be inserted. If it is a construction with a flat front, so can a flange mounting as in the 7a to 7c shown to be used. Known systems with existing attachment points can thus by means of adapted Anschraubbereichen on the collimator 1 . 1' . 1'' be attached.

LIST OF REFERENCE NUMBERS

1, 1 ', 1' '

collimator

2, 2 ''

test pattern

3

casing

3a

Interface surface

3b

handle

4, 4 ''

transparent area / entrance window

4a ''

Rear of the entrance window

5

transparent area / window

6

collimator

7, 7 ', 7' '

optical beam path

8, 8.1,

8.2

deflecting

9

optical device

9a

front lens

10

diffuser

11

Ring clamp adapter

11a

first interface surface of the ring tensioner adapter

11b

second interface surface of the ring tensioner adapter

12

Modular interface of the ring tensioner adapter

13

ring Spanner

14

Flanschflächenadapter

14a

first flange surface

14b

second flange surface

15

Modular interface of the flange surface adapter

20, 20 '

Test pattern examples

20a, 20a '

structures

Claims (12)

Collimator device ( 1 . 1' . 1'' ) for testing and adjusting at least one optical device ( 9 ) in at least one useful wavelength range by means of at least one test pattern ( 2 . 2 '' ) at least comprising: - a housing ( 3 ) which at least approximately absorbs radiation in the at least one useful wavelength range and which at least one region which is at least partially transparent to radiation in the at least one useful wavelength range (US Pat. 4 . 4 '' . 5 ), wherein at least one at least partially transparent region ( 4 '' . 5 ) the at least one test pattern ( 2 . 2 '' ), and wherein at least one at least partially transparent region forms an entry region ( 4 . 4 '' ), - at least one collimator element ( 6 ) for generating a parallel beam path, and - an optical beam path ( 7 . 7 ' . 7 '' ) containing the at least one test pattern ( 2 . 2 '' ) via the at least one collimator element ( 6 ) through at least one entrance area ( 4 . 4 '' ) maps virtually into the infinite, wherein a contrast of the at least one test pattern ( 2 . 2 '' ) by an outside of the housing ( 3 ) existing radiation in the at least one Nutzwellenlängenbereich is generated. Collimator device ( 1 . 1'' ) according to claim 1, characterized in that the optical beam path ( 7 . 7 '' ) at least one optical deflection element ( 8th . 8.1 . 8.2 ), by means of which the at least one test pattern ( 2 . 2 '' ) on the at least one collimator element ( 6 ) and from there through the at least one entry area ( 4 . 4 '' ) is mapped virtually into the infinite. Collimator device ( 1 . 1' . 1'' ) according to claim 1 or 2, characterized in that the at least one at least partially transparent region ( 4 . 4 '' . 5 ) and / or the entry area ( 4 . 4 '' ) is an opening or a window. Collimator device ( 1'' ) according to claim 1, 2 or 3, characterized in that the entrance area is an entrance window ( 4 '' ), wherein the at least one test pattern ( 2 '' ) on a the inside of the housing ( 3 ) facing back ( 4a '' ) of the entrance window ( 4 '' ) is arranged. Collimator device ( 1 . 1' . 1'' ) according to one of claims 1 to 4, characterized in that a structure ( 20a . 20a ' ) of the test pattern ( 2 . 2 '' ) in the at least one at least partially transparent region ( 4 '' . 5 ) is formed by a combination of several materials with different emission coefficients. Collimator device ( 1 . 1' . 1'' ) according to one of claims 1 to 5, characterized in that the at least one collimator element ( 6 ) is at least part of, in particular off-axis parabolic mirror. Collimator device ( 1 . 1'' ) according to one of claims 1 to 6, characterized in that the at least one optical deflecting element as a reflective mirror element ( 8th . 8.1 . 8.2 ) is trained. Collimator device ( 1 . 1' . 1'' ) according to one of claims 1 to 7, characterized in that the entry area ( 4 . 4 '' ) of the collimator device ( 1 . 1' . 1'' ) in the examination and adjustment of an entry region of the at least one optical device ( 9 ), in particular a front lens ( 9a ), an objective and / or an entrance pupil of the at least one optical device ( 9 ) and / or in the region of the entry region of the at least one optical device ( 9 ) can be arranged. Collimator device ( 1 . 1' . 1'' ) according to one of claims 1 to 8, which is connected to the at least one optical device ( 9 ) by means of a ring tensioner ( 13 ) or by means of flange surfaces ( 14a . 14b ) is adaptable. Collimator device ( 1 . 1' . 1'' ) according to one of claims 1 to 9, characterized in that the at least one optical device ( 9 ) is a thermal imaging device or a camera, especially in the visual wavelength range. Collimator device ( 1 . 1' ) according to one of claims 1 to 10, characterized in that in the region of the test pattern ( 2 ) at least one optical scattering element, in particular a lens ( 10 ) is arranged. Method for testing and adjusting at least one optical device ( 9 ) in at least one useful wavelength range by means of a collimator device ( 1 . 1' . 1'' ) according to one of claims 1 to 11, wherein the collimator device ( 1 . 1' . 1'' ) to the at least one optical device ( 9 ) is adapted such that an entry area ( 4 . 4 '' ) of the collimator device ( 1 . 1' . 1'' ) at least approximately in the region of an entry region of the at least one optical device ( 9 ), in particular a front lens ( 9a ), a lens and / or an entrance pupil of the optical device ( 9 ) and the entrance area of the optical device ( 9 ), wherein an optical beam path ( 7 . 7 ' . 7 '' ) of the collimator device ( 1 . 1' . 1'' ) at least one test pattern ( 2 . 2 '' ) of the collimator device ( 1 . 1' . 1'' ) via at least one collimator element ( 6 ) through the entrance area ( 4 . 4 '' ) of the collimator device ( 1 . 1' . 1'' ) virtually into the infinite, in particular to the entrance area of the optical device ( 9 ) and wherein a for detecting the at least one test pattern ( 2 . 2 '' ) by the at least one optical device ( 9 ) required contrast of the at least one test pattern ( 2 . 2 '' ) by an outside of a housing ( 3 ) of the collimator device ( 1 . 1' . 1'' ) existing radiation in the at least one Nutzwellenlängenbereich is generated.

Images