Phase-difference haploscope using only one shutter disk

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Phase Only Synthesis of Antenna Patterns Using Iterative Restoration Methods

In this work, the method of iterative Fourier transform phase reconstruction, conventionally used in holography and optical image reconstruction, is applied to phase only synthesis of antenna patterns. The method is applied to two types of pattern synthesis problems: "main lobe beam shaping" and "side-lobe-level reduction". The proposed method is most useful in the efficient employment of attai...

متن کامل

High performance laser shutter using a hard disk drive voice-coil actuator

Voice-coil motors in computer hard disk drives are shown to make excellent mechanical shutters for light beams. Shutter speeds in excess of 10 mm/ms are attained, allowing switching of a focused beam in under 10 ms. Aperture size can be up to 32 mm. As little as 1 mW of power is required for shutter operation. The shutter can be driven with a sinusoidal signal to switch at up to 100 Hz. The shu...

متن کامل

Enhanced laser shutter using a hard disk drive rotary voice-coil actuator.

Rotary voice-coil motors from computer hard disk drives make excellent mechanical shutters for light beams. However, the complexity of the necessary electronic driving circuit can hinder their application. A new design is presented here, using a single integrated circuit originally intended for controlling dc motors. A digital input signal switches a unipolar power supply bidirectionally throug...

متن کامل

Phase-Only Synthesis of Antenna Arrays Using Nonuniform Phased Sampling Method

Nonuniform Phased Sampling method is proposed to phase-only synthesize the power pattern of both linear and planar antenna arrays. This method modifies the conventional sampling method which is used for amplitude-phase synthesis. This method is based on assigning suitable phases to the sampling points of radiation pattern in order to reach desired amplitude of currents. Some examples are given ...

متن کامل

One-Time Key Based Phase Scrambling for Phase-Only Correlation between Visually Protected Images

We present a theoretical analysis of one-time key based phase scrambling for image matching using phase-only correlation (POC). Phase scrambling is used for visual information protection of templates. The effect of scrambling on POC values is analyzed. As a result, the peak value, which is used as a measure of signal congruence, of the POC between nonscrambled signals can be estimated by observ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Behavior Research Methods & Instrumentation

سال: 1977

ISSN: 1554-351X,1554-3528

DOI: 10.3758/bf03202231