Abstract:
This invention relates to a dispersive holographic spectrometer (12) for analyzing radiation from an infrared source (16). The holographic spectrometer (12) comprises a piezoelectric block (40) having a holographic lens (38) on one face, an array of detectors (36) on another face and a pair of vernier electrodes (32, 34) on opposite faces. Radiation from the source (16) incident upon the holographic lens (38) is dispersed into component wavelengths (44, 46) and directed towards the detector array (36). The holographic lens (38) has a holographic interference pattern recorded on it such that radiation of predetermined wavelength components are dispersed sufficiently enough such that radiation of specific wavelengths falls on different detector elements (48) of the detector array (36). By applying a voltage to the electrodes (32, 38), an electric field is created within the piezoelectric block (40) such that it is either compressed or expanded. This change in the piezoelectric block (40) alters the direction of the radiation from the holographic lens (38) to the detector array (36). Therefore, misalignment of the source (16) with the holographic lens (38) can be compensated for such that piezoelectric adjustment of the block (40) will make the radiation of individual wavelengths fall on the desired detector element (48). Further, radiation from different wavelengths can be directed from one detector element to another. The detector array (36) is self-scanning such that an absorption spectrum can be measured and recorded over a range of frequencies.
Abstract:
분광모듈(1)은본체부(2)가판 형상이기때문에, 본체부(2)의박형화에의해소형화를도모할수 있다. 또한, 본체부(2)가판 형상이기때문에, 예를들어웨이퍼프로세스를이용하여분광모듈(1)을제조할수 있다. 즉, 다수의본체부(2)가되는유리웨이퍼에대해매트릭스형상으로렌즈부(3), 회절층(4), 반사층(6) 및광검출소자(7)를마련하고, 당해유리웨이퍼를다이싱하는것에의해분광모듈(1)을다수제조할수 있다. 이와같이하여, 분광모듈(1)을용이하게대량생산하는것이가능하게된다.
Abstract:
분광모듈(1)은본체부(2)가판 형상이기때문에, 본체부(2)의박형화에의해소형화를도모할수 있다. 또한, 본체부(2)가판 형상이기때문에, 예를들어웨이퍼프로세스를이용하여분광모듈(1)을제조할수 있다. 즉, 다수의본체부(2)가되는유리웨이퍼에대해매트릭스형상으로렌즈부(3), 회절층(4), 반사층(6) 및광검출소자(7)를마련하고, 당해유리웨이퍼를다이싱하는것에의해분광모듈(1)을다수제조할수 있다. 이와같이하여, 분광모듈(1)을용이하게대량생산하는것이가능하게된다.
Abstract:
본 발명은 예컨대 생리적 혈액 값과 같은 측정 매체의 성분 또는 특성을 검출 및 모니터링하는 장치에 관한 것이다. 장치는 광대역 스펙트럼 측정광(2)을 발생시키고 측정 영역(3)에 대해 작용하는 광원(20)과, 측정 영역(3)에 의해 반사된 분석광(4)을 확산시키는 수단(9)을 포함한다. 장치는 확산광을 포착하는 센서 어레이(11)도 포함한다. 센서 어레이(11), 광원(20) 및 분석광(4) 확산 수단은 하우징 내에 조밀한 유닛으로서 배치된다.
Abstract:
A wavelength tunable spectrometer and a wavelength tuning method thereof are provided to secure optimum diffraction efficiency according to a wavelength of incident light, to maintain an optical path for observation, to increase a degree of freedom in a design thereof, and to reduce a volume thereof. A transmissive diffraction unit(105) is rotatably arranged in an optimum incident angle according to external incident light in order to diffract the incident light. A mirror(103) is arranged in a fixed angle to the transmissive diffraction unit in order to reflect the diffracted light in the same angle as the incident angle to the transmissive diffraction unit, to a predetermined optical path. A driving unit(113) rotates the transmissive diffraction unit and the mirror in an angle according to the wavelength of the incident light. A light collection unit collects an optical output applied through the mirror. An observation unit observes a spectrum of the light collected through the light-collecting portion.