Fuji Photo Film Company, Limited

Terumo Kabushiki Kaisha

Toshiyuki Inoue

Yoshinori Morimoto

Kenichi Kodama

Yoshiharu Okino

Atsushi Uejima

Takashi Yoshida

Yasunobu Sakaguchi

Tomonori Nishio

Tatsuya Konagaya

Kazuhiko Katakura

Yoshio Ozawa

Mitsuhiko Serizawa

An optical tomographic image acquisition apparatus includes a light source unit emitting light; a light dividing device dividing the light from the unit into measurement light and reference light; a projecting device arranged inside a tubular sheath to project the measurement light onto an object; a combining device combining reflected light reflected from the object or the sheath and the reference light; an interference light detecting device detecting interference light between the reflected light and the reference light; an interference signal acquiring device acquiring an interference signal; a tomographic image acquiring device acquiring an optical tomographic image; and a reference position adjustment section detecting a sheath interference signal that is an interference signal of the reflected light reflected from the sheath from the interference signals and adjusts an optical tomographic image reference position as a reference to acquire the optical tomographic image based on the detected sheath interference signal.

Optical tomographic image acquisition apparatus and method of acquiring optical tomographic image which adjusts reference position that acquires optical tomographic image based on sheath interference signal

An optical tomographic image acquisition apparatus comprises a light source unit emitting light; a light dividing device dividing the light from the unit into measurement light and reference light; a projecting device arranged inside a tubular sheath to project the measurement light onto an object; a combining device combining reflected light reflected from the object or the sheath and the reference light; an interference light detecting device detecting interference light between the reflected light and the reference light; an interference signal acquiring device acquiring an interference signal; a tomographic image acquiring device acquiring an optical tomographic image; and a reference position adjustment section detecting a sheath interference signal that is an interference signal of the reflected light reflected from the sheath from the interference signals and adjusts an optical tomographic image reference position as a reference to acquire the optical tomographic image based on the detected sheath interference signal.

After scan conditions are determined by the pre-scan, a temperature of a focus lens unit is measured. When the difference between the measured temperature and a set temperature data stored in a RAM is less than 4&#xb0; C., a focus position is calculated based on set focus position data in the RAM and temperature correction data which is decided according to the temperature difference. When the temperature difference is 4&#xb0; C. or more, a focus search operation is carried out to detect the focus position. Focus position data and temperature data, obtained by the focus search operation, are written in the RAM as set focus position data and set temperature data. It is possible to omit the focus search operation if temperature fluctuation is small.

Image scan apparatus and focus control method

A line CCD scanner includes a photo film passageway in which developed photo film is positioned. A light source illuminates an image in the photo film positioned in the photo film passageway. A line CCD reads the image being illuminated. A mask member is secured to the photo film passageway. The image is positioned at the mask member. A mask slit is formed in the mask member, for directing light from the light source toward the photo film. The mask slit has a small width with reference to a predetermined direction. Furthermore, a protrusion portion is disposed on the mask member to extend in the width direction of the photo film, provided with the mask slit formed in a middle thereof, for flexing the photo film in the longitudinal direction to remove flexing in the width direction.

Image reading device

A flow sensor detects a flow rate of cooling air from a compressor, and a determination is made as to whether or not the detected flow rate is abnormal. A determination is made by a diaphragm position sensor as to whether or not a diaphragm is located at such a critical position that a quantity of light illuminated onto a photographic film is large, possibly resulting in degeneration of a photographic film. A lamp is turned off if the diaphragm is located at the critical position and the flow rate of the cooling air is abnormal.

Device for preventing the degeneration of a photographic photosensitive material and image reading apparatus

Light is irradiated onto a photographic film which is conveyed by a film carrier. A compressor generates cooling air for cooling the photographic film. A guide pipe guides the cooling air generated by the compressor to at least one of a region of the photographic film, onto which the light is irradiated, and a reverse surface of the region. In this way, since the cooling air generated by the compressor is guided to the photographic film, the photographic film can be cooled by the cooling air having large amount of flow, velocity of flow, or the like.

Image reading apparatus, image recording apparatus and image processing device

A system for monitoring the amount of light emitted from a surface emitting laser includes a beam splitter which is fixed to the surface emitting laser and splits a part of a laser beam emitted from the laser as a monitor light, and a photodetector which detects the monitor light.

System for monitoring amount of light emitted from surface emitting laser

In an image scanning system, a deflector is contained in a casing having a cover glass which transmits a scanning light beam deflected by the deflector. An air flow is formed in front of the cover glass to prevent dust adhesion.

Dust adhesion prevention system for image scanning system

The improved image reading and reproducing apparatus comprising a scanner which reads an image on an original photoelectrically, an image processor which performs specified image processing on image data output from the scanner and a printer which writes the image data output from the image processor into a memory, reads the recording image data sequentially from the memory and records an image on an auxiliary scanned recording material in accordance with the recording image data, satisfies the following relation (1):

Image reading and reproducing apparatus

In a light beam scanning recording device, a color image is recorded on a recording material by scanning the recording material in a main scanning direction and a sub-scanning direction with light beams of three different wavelengths modulated according to an image signal. A light source which emits a plurality of light beams which form a predetermined number of beam spots on the recording material arranged in the sub-scanning direction is used as the light source for emitting light beams of each wavelength, whereby recording is effected simultaneously along the predetermined number of main scanning lines.

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Kanagawa, Japan

Toshiyuki Inoue