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ПодробнееQuick ViewASTROHN- ФФ-16/1,2
Megapixel lens with fixed septum
Lens for resolving the standard video monitoring tasks. Can be used amid the permanent lightning or with lightning electronic correction matrixes. Large aperture of 1,1 which is standard for ASTROHN lenses allows to receive the image of good quality amid poor weather conditions. Can be used in the systems with IR video cameras.
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ПодробнееQuick ViewASTROHN-ФA-25/0,95
Rapid high resolution lens with an automatic septum
This lens is designed to work with CCD matrixes of high resolution up to 5 megapixels and 1/3″ size. Lens can be used amid the variable illuminance. Ultra large F=0,95 aperture allows to receive high quality image amid the lack of light. Fixed focal length eliminates the possibility of angularly readjusting the camera and amplification on the object. However, with the right parameters there is no need for readjusting. Therefore varifocal lens are not used when in service. However, the ability to change focal length makes optical scheme more complicated and optics – more expensive and inevitably decreases the quality of lens while other parameters stay the same. All components are made from metal.
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ПодробнееQuick ViewASTROHN-BA-38/1,1
Varifocal lens with automatic septum
Lens for resolving the standard video monitoring tasks. Large aperture of 1,1 which is standard for ASTROHN lenses allows to receive the image of good quality amid poor weather conditions. This lens is the most optimal with matrix up to 3 megapixels. Chromatic aberration is negated.
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ПодробнееQuick ViewASTROHN-ФР-50/1,8
Megapixel lens with manually adjustable septum
This lens can be used amid the permanent lightning or with lightning electronic correction matrixes. This lens is designed for use with ultra-high resolution CCD matrixes of up to 800 TVL of 1/2” size and also with all of the megapixel CMOS matrixes of up to 5 megapixels. The inability to adjust the focal length means inability to adjust the camera angularly and its inability to amplify the objects. But if the parameters during the engineering are selected right there is no need to do this in service. The ability to adjust the focal length makes the optical scheme more complicated and optics more expensive. This lens have perfect combination of high quality optics, which allows to use it with matrixes with resolution up to 3 megapixels, with reasonable price.
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ПодробнееQuick ViewASTROHN-ФР-25/1,8
Megapixel lens with manually adjustable septum
This lens can be used amid the permanent lightning or with lightning electronic correction matrixes. Most of the CCTV tasks demands only one installation during the septum assembling considering the given lightning (for example, the office hallway). Modern megapixel cameras chose the lightning level electronically. Therefore the septum adjustance narrows to the choosing the depth of field. This lens is designed for use with the ultra-high resolution CCD matrixes of up to 800 TVL of 1/2” size and also with all of the megapixel CMOS matrixes of up to 5 megapixels.
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ПодробнееQuick ViewASTROHN-ФA-120/1,25
Rapid narrow-angle long-focus lens of high resolution with automatic septum
This lens is for resolving the special tasks of CCTV at the long distance. Depending on weather states and sight distance, it is possible to detect objects within the 10 km distance and recognize full-height figures within the 6 km distance. The lens is designed for use with high resolution CCD matrixes up to 8 megapixels and bigger size up to 1/2″. Automatic septum allows to use lens amid the variable illuminance. You can change the septum by using the DC signal. Bigger aperture F=1.25 allows to allows to receive high quality image amid the lack of light. Lens’ optics has a FMC and is made from optical flint of domestic production. Lens’ body is made from metal alloys. Lens’ warranty is 6 months.
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ПодробнееQuick ViewASTROHN-ФA-160/1,65
Rapid narrow-angle long-focus high resolution lens with an automatic septum
This lens is designed to resolve the special CCTV tasks for long and extra-long distances. Depending on weather conditions and sight distance it can detect objects at an up to 15 km distances and recognize full-sized figures at an up to 10 km distances. This lens is designed for use with high resolution CCD matrixes at up to 8 megapixels and bigger format up to 1/2″. Automatic septum allows to use this lens amid the lack of light. Septum tuning can be done by DC signal. Large aperture of F=1,65 allows to receive the quality image amid the lack of light. Lens optics have a FMC and is made from optical flint of domestic production. Lens’ body is made from metal alloys. Lens’ warranty is 6 months.
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ПодробнееQuick ViewASTROHN-BA-212/1,2
Short-focus varifocal megapixel lens with auto iris
Lens for resolving the standard CCTV monitoring tasks. Big aperture of 1,2 allows to receive a sufficient amount of information about desired object in all weather conditions. Lenses with matrix’s size up to 3 megapixels are optimal. Chromatic aberration is negated.
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ПодробнееQuick ViewASTROHN-BA-558/1,3
Rapid varifocal megapixel lens with an automatic septum
Lens for resolving the professional security CCTV tasks. Big 1.3 aperture allows to receive quality images amid the lack of light. Lens with up to 3-megapixel matrix is optimal. Chromatic aberration is fully negated. Every lens passes the multiple stages inspection that guarantees the collimation, focal plane and optical drive quality. All components are made from metal. Lens is composed of multiple lenses of special composition of optical flint. The most popular lens by the ratio of features and price.
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ПодробнееQuick ViewASTROHN-BA-945/1,0
Rapid varifocal megapixel lens with an automatic septum
Rapid megapixel lens for resolving special and specific tasks for CCTV. Ultra large F=1,0 aperture allows to receive high quality image amid the lack of light, white nights and dusk. Aperture of 1,0-1,08 stays at all of the focal length range up to 600 TVL of 1/3″ and CMOS matrix with the resolution up to 3 megapixels. This lens is the most optimal with matrixes of high resolutions. Special optic scheme with low dispersion allows to see in the day and night. In this lens the most of optic-specific distortions are negated. Every lens passes the multiple stages inspection that guarantees the collimation, focal plane and optical drive quality. All components are made from metal. Lens is composed of multiple lenses of special composition of optical flint, all surfaces have FMC.
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ПодробнееQuick View
ASTROHN-BA-1545/1,0
Rapid varifocal megapixel lens with an automatic septum
Rapid megapixel lens for resolving special and specific tasks for CCTV. Ultra large F=1,0 aperture allows to receive high quality image amid the lack of light, white nights and dusk. Lens is developed to work with high resolution CCD matrixes up to 600 TVL of 1/2″ and megapixel IP cameras up to 5 megapixels. This lens is the most optimal with high resolution matrixes of 1/2″. Special optic scheme with low dispersion allows to see in the day and night. In this lens the most of optic-specific distortions are negated. Every lens passes the multiple stages inspection that guarantees the collimation, focal plane and optical drive quality. All components are made from metal. Lens is composed of multiple lenses of special composition of optical flint, all surfaces have FMC.
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ПодробнееQuick View
ASTROHN-BР-558/1,3
Varifocal lens with manually adjustable septum
Lens for resolving the most of the professional CCTV tasks. Large aperture of F=1,3 allows to receive an image amid the lack of light. This lens is designed for use with high resolution CMOS matrixes of up to 3 megapixels. All components are made from metal. Lens is composed of multiple lenses of special composition of optical flint, all surfaces have FMC.
ASTROHN Technology LTD produce lenses for security cameras with resolution up to 8 MP. Pride of place of developed and produced objectives goes to optic schemes of objectives formerly produced for photo cameras: Helios, Industar, Rubinar. Lenses used with CCD matrix are optimized for required resolution because the prototypes’ photographic quality surpasses by far the lenses’ required resolution for CCTV use. The film’s grain at the molecular level demanded better quality and bigger camera resolution than any other multipixel modern CCD camera matrix. Reducing the FOV to 1/4″ also conduced to simplifying the optical schemes versus the 36 mm photographic lenses. With that in mind, lenses produced by our company have required resolution, which in most times exceeds capabilities of cameras our customers use.
When using and engineering the CCTV we recommend using the lenses with fixed focus. Fixed focus eliminates the possibility of tuning camera by the viewing angle and amplification directly on the secured facility at the survey area. However tuning and correction of focal distance of the lenses is performed only once during the camera mounting. In the future during the service life there is no need in varifocal lenses. Varifocal lenses are more expensive and have many drawbacks that are manifested at the large resolutions when the clearness and sharpness along the high contrast are needed. As a result, camera with bigger resolution gives blurred gray image while attempting to maximize. Varifocal lenses in the whole focal distance range do not work in the same manner. Usually manufacturers use the number of megapixels as a resolving power at a minimal focus characteristic. When focus changes, lenses contrast and luminosity characteristics can suffer significantly. Hereby the delineators’ inability to estimate the field of view angularly and chose the suitable lenses leads to the camera/lenses pair exploitation suffer.
All of our lenses are made from optical flint of domestic production. The lenses’ bodies are made from metal alloys.
ASTROHN lenses identification structure
ASTROHN – X1X2-Y1/Y2
| ASTROHN | Lenses’ trademark |
| X1 | Focusing type |
| Ф | Fixed focus |
| В | Variable focal length (varifocal) of manual setting |
| З | Variable focal length of automatic unit |
| Х2 | Septum type |
| Ф | Fixed septum |
| Р | Manual septum control |
| А | Automatic septum controlled by DC |
| В | Automatic septum controlled by Video output |
| У1 | Minimum focal length (approximated to mm) |
| У2 | Lens aperture |
