Dr. Hüseyin Sari Profile

Dr. Hüseyin Sari

Assoc. Prof. Dr. at Ankara Univ

SPIE Involvement:

Author

Area of Expertise:

Semiconductors, optoelectronics

Websites:

Personal Website

Publications (6)

Proceedings Article | 30 August 2019 Paper

Design of dual mode seeker for millimeter wave and four-quadrant detectors in missile application

Doğan Uğur Sakarya, Hüseyin Sari

Proceedings Volume 11100, 111000N (2019) https://doi.org/10.1117/12.2534751

KEYWORDS: Missiles, Sensors, Extremely high frequency, Signal to noise ratio, Receivers, Mid-IR, Signal attenuation, Optical design, Infrared radiation, Pulsed laser operation

Read Abstract +

Proceedings Article | 30 August 2019 Paper

Effect of beam steering method on optical system

Doğan Uğur Sakarya, Hüseyin Sari

Proceedings Volume 11100, 111000M (2019) https://doi.org/10.1117/12.2534750

KEYWORDS: Prisms, Modulation transfer functions, Optical design, Missiles, Germanium, Tolerancing, Beam steering, Sensors, Imaging infrared seeker, Mid-IR

Read Abstract +

Proceedings Article | 30 August 2019 Paper

Conceptual and test phase of optical design of seeker in missile application

Doğan Uğur Sakarya, Hüseyin Sari

Proceedings Volume 11100, 111000L (2019) https://doi.org/10.1117/12.2534748

KEYWORDS: Missiles, Optical design, Modulation transfer functions, Sensors, Tolerancing, Detection and tracking algorithms, Target detection, Image enhancement, Long wavelength infrared, Optical testing

Read Abstract +

Proceedings Article | 30 August 2019 Paper

Stabilization effects on seeker performance in missile application

Doğan Uğur Sakarya, Hüseyin Sari

Proceedings Volume 11100, 111000O (2019) https://doi.org/10.1117/12.2534752

KEYWORDS: Missiles, Sensors, Optical design, Tolerancing, Modulation transfer functions, Target acquisition, Performance modeling, Imaging infrared seeker, Mars, Collimators

Read Abstract +

Proceedings Article | 5 May 2017 Paper

Design of a cost-effective laser spot tracker

Göktuğ Gencehan Artan, Hüseyin Sari

Proceedings Volume 10191, 1019107 (2017) https://doi.org/10.1117/12.2262343

KEYWORDS: Optical filters, Optical design, Signal detection, Lens design, Optical tracking, Target detection, Computing systems, Sensors, Nd:YAG lasers, Systems modeling, Performance modeling, Optical components, Bandpass filters, Aspheric lenses, Zemax

Read Abstract +

Proceedings Article | 18 December 2012 Paper

A computer modelling approach to decrease stray light in low light non imaging optical designs

Selcuk Seyhun, Huseyin Sari

Proceedings Volume 8550, 85500C (2012) https://doi.org/10.1117/12.2014364

KEYWORDS: Stray light, Sensors, Computer simulations, Manufacturing, Optical design, Reflectivity, Prototyping, Zemax, Computer aided design, Modeling

Read Abstract +

Opto-mechanical structures (objectives) are employed to transfer photons which are collected from their field of view (FOV) to the detector plane. The sensors used in such systems have high gain which causes them to detect stray light originated from the mechanical body of the objective. This type of stray light is a major problem in low light nonimaging optical systems used in laser seekers which employ four quadrant position sensors to determine laser illumination reflected from a target surface positioned kilometers away. This work, mainly concentrates on reducing unwanted stray light caused by inner mechanical structure of large FOV objectives with the use of software tools. Stray light in an optical system can not be totally eliminated. However, it can often be reduced to a level at which it is tolerable. This works focuses on reducing unwanted stray light originating from mechanical structure of the objective in a cost efficient way. In order to prevent this unwanted stray light a sample laser seeker objective is designed in ZEMAX software environment together with its mechanical mount. Black delrin is used as the objective material. Its specular and diffused reflective properties are measured with spectrophotometer and defined in the software environment. Ten objectives with different baffle height/pitch ratio (h/p) are designed and used in the same optic design. In order to show that a software model can be used to find the optimum h/p ratio for eliminating stray light, prototype objectives are manufactured and tested with readout electronics. After making measurements with different angles on incidence values best applicable objective with a certain baffle h/p ratio is found. It is verified that the h/p ratio found in software model is in very good agreement with the measurement results. This helps us not use more baffles than necessary since increasing baffle h/p astronomically increases production and workmanship costs. This study shows that, instead of manufacturing expensive prototypes computer simulation can be used to identify and also take necessary precautions to prevent or decrease stray light before production. This prevents loss of significant amount of time, work, and cost.

Showing 5 of 6 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years