We are engaged in the design and manufacture of lenses according to the customer's specifications and perform the following operations:
- optical and mechanical design,
- assembly of optical systems,
- production of prototypes and small batches,
- quality control and tests.
The optical components are made of crystals and glass, including Ohara, Schott and CDGM, and are coated for the following spectral ranges:
- IR 8-14 μm (LWIR)
- IR 3-5 μm (MWIR)
- IR 0.7 - 1.4 μm (SWIR, NIR)
- Visible 0.4 - 0.7 μm (VIS)
The lenses listed on this page have been designed and manufactured in our company according to individual requirements. The results of the work are examples of lenses of different complexity that you can order.
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LWIR
Wide-angle lens F '= 5mm F # / 2.0
Parameter Value Spectral range, μm 7,5 - 12 Main wavelength (λ0), μm 10 Focal length at λ0, mm 5,0 Aperture ratio 1:2.0 Back focal length, mm 30,0 Optical system length, mm 100,0 Operating temperature range, degrees Celsius -45…+60 Field of view, 2ω, deg 150 Linear field, 2y', mm 12,3 Maximum distortion F-THETA, % 9,8 
Energy concentration function for nominal temperature
Energy concentration function for temperature -45 °С
Energy concentration function for temperature + 60 °С
MTF for nominal temperature
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MWIR
8x projection lens
Parameter Value Spectral range, μm 2,5 - 4,8 Main wavelength (λ0), micron 3,5 Numerical aperture in object space, units 0,65 Linear field in object space, 2y, mm 2,25 Linear magnification, times 8x Front working length, mm 15,8 Optical system length, mm 56,5 Maximum distortion,% <0,1 
MTF
Spot Diagram
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SWIR, NIR and VIS lenses
Wide spectral range lens (VIS + SWIR) F '= 99.99 mm F # / 1.8
Parameter Value Spectral range, μm 0,4 - 1,4 Main wavelength in the VIS range (λ0), μm 0,546 Main wavelength in the SWIR range (λ0), μm 1,100 Focal length, mm 99,9 Aperture ratio 1:1,8 Back focal length, mm 39,9 Optical system length, mm 93,6 Field of view, 2ω, degrees 5,2 Linear field, 2y', mm 9,2 Maximum distortion, % 0,55 Operating temperature range, degrees Celsius -40…+60 
MTF for object at infinity (VIS range)
MTF for object at infinity (SWIR range)
1/5x projection lens
Parameter Value Spectral range, μm 0,80 - 1,35 Main wavelength (λ0), μm 1,02 Linear field in object, 2y, mm 100,0 Linear magnification, times -0,2x Front working length, mm 183,3 Optical system length, mm 46,8 Maximum distortion, % -4,22 
Spot Diagram
MTF
Eyepiece F'= 20 mm with 40 mm eye-relief
Parameter Value Entrance pupil diameter, mm 2,0 (5,0) Object size (diagonal), mm 10,06 Spectral range, μm 0,486-0,656 Main wavelength (λ0), μm 0,588 Focal length for λ0, mm 19,98 Aperture ratio 1:4,0 Field of view, 2ω, deg 29,0° Linear field in image space, 2y', mm 10,0 Eye relief, mm 40,0 Back (front) focal length, mm 6,1 Optical system length, mm 29,6 Maximum vignetting, % 43,9 Maximum distortion from a flat object, % -3,92 
MTF (pupil 5 mm)
MTF (pupil 2 mm)
Retro photo lens with focusing to the finite distance F '= 110.9 mm F # / 2.2-16
Parameter Value Spectral range, μm 0,486-0,656 Main wavelength (λ0), micron 0,588 Focal length at λ0, mm 110,9 Aperture ratio 1:2,2 Field of view, 2ω, deg 11,0° Linear field, 2y', mm 44,8 Maximum distortion, % -0,37 Back focal length, mm 48,2 Optical system length, mm 99,4 Minimum finite distance to object, m 1 
MTF (object at infinity)
MTF (object at 1 m)
Notification on the implementation (resumption) of activities in accordance with the amendments dated 09.05.2020 to the Decree of the Government of St. Petersburg No. 121 'On measures to counter the spread of a new coronavirus infection (COVID-19) in St. Petersburg.' LLC 'Opto-TL' is a small innovative industrial enterprise, founded in 2002. The main activities are design, manufacturing and sales of optical products. The quality management system for the design, production and maintenance of optical products made of glass and crystals, optical systems (including lenses), optical test equipment complies with GOST ISO 9001-2015. LLC 'Opto-TL' has a compliance certificate ISO 9001-2015 Quality Management System, issued by the Certification Association 'Russian Register'.
«Opto-Technological Laboratory» Ltd (Opto-TL) is innovative production enterprise founded in 2002. Main activity – design and manufacturing of optical products.
Quality Management System applied to development, manufacturing and service of optical components out of crystals and glasses, optical systems (including objectives), optical testing and measuring devices corresponds to GOST R ISO 9001-2015.
Contact information
Phone: +7 (812) 347-76-90
E-mail: sales@optotl.ru
Для технических вопросов: technical_service@optotl.ru
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