Nakanishi Inc.

Biophotonics Information Laboratories, Ltd.

Fukushima Medical University

Hiroshi Ishihata

Sosaku Kawata

Humio Inaba

Hiroshi Horiuchi

Balasigamani Devaraj

Masashi Usa

Motohiro Takeda

Hiroshi Hasegawa

Masaki Kobayashi

Toshirou Koizumi

Naoki Miki

To provide a porous plate for medical use which can suppress bending along a row direction and, even if a local crack occurs, can inhibit the crack from growing and leading to a fracture. One aspect of the present invention is a porous plate for medical use which is a thin-plate substrate provided with a pore perforation section having a plurality of pores perforated therein and a frame section surrounding the pore perforation section. In this porous plate, the pore perforation section has crosspieces which extend lengthwise and crosswise in continuity with the frame section and partition the pore perforation section into a plurality of parts, and a plurality of pore perforation cells each surrounded by the crosspieces. The pores perforated in the pore perforation cells have a pore diameter calculated as an equivalent circular pore diameter of 1 to 50 &#x3bc;m, and the center-to-center distance between the adjacent pores is 2 to 200 &#x3bc;m.

Porous plate for medical use and manufacturing method of porous plate for medical use

A lighting device having a safe, long-life, and low-cost light source, is disclosed which has a composite element including a plurality of LEDs arranged in rows and columns.

Lighting device

An image measuring apparatus for measuring an image of a tooth or gum applies the radiation of a laser beam to permit extremely quick, reliable, safe detection of dental caries and other dental pathological conditions. The low incident power of the laser radiation would not cause damage or pain to the tissue, such as the tooth or gum. The image measuring apparatus is equipped with a light source which emits light having at least a wavelength in a range of 500 nm or more to less than 600 nm; it uses the light emitted from the light source to obtain 2-dimensional images or computed tomographic images of a tooth or gum from the light, which has been transmitted through the tooth or gum, by using an optical heterodyne detection method.

Image measuring apparatus

Growing community of inventors

Sendai, Japan

Hiroshi Ishihata