Abstract: Provided is an optical image measuring apparatus capable of effectively receiving interference light, particularly an alternating current component thereof using a smaller number of photo sensors. The optical image measuring apparatus includes a polarizing plate for converting a light beam from a broad-band light source to linearly polarized light, a half mirror for dividing the light beam into signal light and reference light, a piezoelectric element for vibrating a reference mirror, a wavelength plate for converting the reference light to circularly polarized light, a polarization beam splitter for extracting two different polarized light components from interference light produced from the signal light and the reference light which are superimposed on each other by the half mirror, CCDs for detecting the two different polarized light components, and a signal processing portion for producing an image of an object to be measured based on the detected polarized light components.

Abstract: An optical image measuring apparatus capable of speedily measuring a velocity distribution image of a moving matter.

Abstract: An optical image measuring apparatus capable of measuring an object to be measured which includes a birefringent layer in a short time is provided. The optical image measuring apparatus includes a broad-band light source, lenses for increasing a diameter of the light beam, a polarizing plate, a half mirror, a wavelength plate for converting the reference light to circularly polarized light, a wavelength plate for converting the signal light to circularly polarized light and converting the signal light to linearly polarized light, a frequency shifter, a polarization beam splitter for separating an S-polarized light component and a P-polarized light component from interference light, CCDs for receiving the respective polarized light components and outputting detection signals each including intensity change information, and a signal processing portion for forming an image reflecting a birefringent property, of an object to be measured based on the intensity change information.

Abstract: An apparatus, which includes a light source, a polarizing plate for converting the light beam to linearly polarized light, a half mirror for dividing the light beam into signal light and reference light and superimposing the signal light and the reference light on each other to produce interference light, a wavelength plate for converting the reference light to circularly polarized light, a frequency shifter for shifting a frequency of the reference light, a reference mirror which is moved by a piezoelectric element, a polarization beam splitter for extracting an S-polarized light component and a P-polarized light component from the interference light, CCDs for detecting the respective polarized light components and outputting detection signals, and portion for calculating a signal intensity of the interference light and a phase thereof based on the detection signals. An image of an object to be measured is formed based on a result obtained by calculation.

Abstract: An optical image measuring apparatus capable of effectively obtaining a direct current component of a heterodyne signal which is composed of background light of interference light is provided.

Abstract: Provided is an optical image measuring apparatus capable of easily changing a scanning interval of an object to be measured in a depth direction with high precision.

Abstract: To provide an optical image measuring apparatus capable of calculating an intensity of a direct current component composed of background light based on a result obtained by detection of interference light and obtaining a signal intensity of the interference light using the calculated intensity. The apparatus includes: an optical interference system to divide a light beam into signal light and reference light, and the signal light propagating through an object to be measured and the reference light are superimposed to produce interference light; beam splitters for dividing it into three interference light beams; shutters to perform sampling; photo detectors for detecting the sampled interference light beams and converting them into electrical signals; and a signal processing portion for calculating the signal intensity of the interference light and the spatial phase distribution thereof based on the electrical signals.

Abstract: Provided is an optical image transmitting system capable of producing signal light including plural image information and emitting the signal light, and in addition, receiving the signal light and selectively extracting target image information. An optical image transmitting system of the present invention includes an optical image transmitting apparatus (100) for producing plural optical image information beams (S1 to Sn) representing plural optical image information and including light beams of different frequencies, superimposing the plural optical image information beams (S1 to Sn) into signal light (S) and emitting the signal light (S) through free space or an optical waveguide such as an image fiber, and an optical image receiving apparatus (200) for receiving the emitted signal light (S) and selectively detecting the optical image information beams (S1 to Sn) based on the frequency difference.

Abstract: Provided is an optical image measuring apparatus capable of speedily measuring a velocity distribution image of a moving matter.

Abstract: An optical image measuring apparatus capable of measuring an object to be measured which includes a birefringent layer in a short time is provided. The optical image measuring apparatus includes a broad-band light source, lenses for increasing a diameter of the light beam, a polarizing plate, a half mirror, a wavelength plate for converting the reference light to circularly polarized light, a wavelength plate for converting the signal light to circularly polarized light and converting the signal light to linearly polarized light, a frequency shifter, a polarization beam splitter for separating an S-polarized light component and a P-polarized light component from interference light, CCDs for receiving the respective polarized light components and outputting detection signals each including intensity change information, and a signal processing portion for forming an image reflecting a birefringent property, of an object to be measured based on the intensity change information.

Abstract: Provided is an optical image measuring apparatus forming a three-dimensional image based on tomographic images of an object, acquired at various depths even when the object moves during measurement. Including a half mirror (6) for dividing a light beam signal light (S) and reference light (R), a frequency shifter (8), a reference mirror (9) and a piezoelectric element (9A) used to change an optical path length of the reference light (R), CCDs (21, 22) for receiving interference light beams (L) resulting from interference light produced by superimposing the signal light (S) and the reference light (R) on each other by the half mirror (6) and outputting detection signals, an image forming portion for forming tomographic images based on the detection signals, a measurement depth calculating means (53), and an image processing portion (57). Forming a three-dimensional image or the like based on the arranged tomographic images.

Abstract: An optical image measuring apparatus forming an image expressing functional information on a living tissue.

Abstract: Provided is an optical image measuring apparatus capable of effectively receiving interference light, particularly an alternating current component thereof using a smaller number of photo sensors. The optical image measuring apparatus includes a polarizing plate for converting a light beam from a broad-band light source to linearly polarized light, a half mirror for dividing the light beam into signal light and reference light, a piezoelectric element for vibrating a reference mirror, a wavelength plate for converting the reference light to circularly polarized light, a polarization beam splitter for extracting two different polarized light components from interference light produced from the signal light and the reference light which are superimposed on each other by the half mirror, CCDs for detecting the two different polarized light components, and a signal processing portion for producing an image of an object to be measured based on the detected polarized light components.

Abstract: Provided is an optical image measuring apparatus capable of effectively obtaining a signal intensity of interference light and phase information thereof by improving detection sensitivity.

Abstract: Provided is an optical image measuring apparatus capable of taking images of an object to be measured in plural depth regions in parallel. An optical image measuring apparatus of the present invention includes: a beam splitter (4) for dividing a light beam into signal light (S) and reference light (R); beam splitters (5-1 to 5-(n?1)) for dividing the reference light (R) into plural reference light beams (R1 to Rn); frequency shifters (6-1 to 6-n) for shifting frequencies of the reference light beams (R-1 to Rn) by different amounts; and reflector plates (7-1 to 7-n) arranged at different distances from an object to be measured (O). The reference light beams (R1 to Rn) and the signal light (S) reflected by the object to be measured in depth regions (D1 to Dn) are superimposed on each other to thereby produce interference light (L).

Abstract: Provided is an optical image measuring apparatus capable of easily changing a scanning interval of an object to be measured in a depth direction with high precision.

Abstract: Provided is an optical image transmitting system capable of producing signal light including plural image information and emitting the signal light, and in addition, receiving the signal light and selectively extracting target image information. An optical image transmitting system of the present invention includes an optical image transmitting apparatus (100) for producing plural optical image information beams (S1 to Sn) representing plural optical image information and including light beams of different frequencies, superimposing the plural optical image information beams (S1 to Sn) into signal light (S) and emitting the signal light (S) through free space or an optical waveguide such as an image fiber, and an optical image receiving apparatus (200) for receiving the emitted signal light (S) and selectively detecting the optical image information beams (S1 to Sn) based on the frequency difference.

Abstract: An optical image measuring apparatus capable of effectively obtaining a direct current component of a heterodyne signal which is composed of background light of interference light is provided.

Abstract: To provide an optical image measuring apparatus capable of calculating an intensity of a direct current component composed of background light based on a result obtained by detection of interference light and obtaining a signal intensity of the interference light using the calculated intensity. The apparatus includes: an optical interference system to divide a light beam into signal light and reference light, and the signal light propagating through an object to be measured and the reference light are superimposed to produce interference light; beam splitters for dividing it into three interference light beams; shutters to perform sampling; photo detectors for detecting the sampled interference light beams and converting them into electrical signals; and a signal processing portion for calculating the signal intensity of the interference light and the spatial phase distribution thereof based on the electrical signals.

Abstract: There is disclosed an optical measurement device which is based on optical interference and it uses a light beam which is radiated to and transmitted through or reflected by a sample, especially a light scattering medium to optically measure the sample. The amount of signal lights effective for optical heterodyne detection is increased, while speckle noises are averaged out. On an observation plane of a concerned point arranged are plural detector elements. From signals obtained by the respective detector elements, an optical signal of the concerned point is obtained.