Abstract: A light source device includes: a first light source including a first electrode to which a current is applied, a first light emitter configured to emit light by the current applied to the first electrode, and a first heat release region configured to release heat generated in the first light emitter; a second light source including a second electrode to which a current is applied, a second light emitter configured to emit light in a wavelength different from a wavelength of the first light emitter, by the current applied to the second electrode, and a second heat release region configured to release heat generated in the second light emitter; and a heat release portion electrically-connected with the first electrode, electrically-insulated from the second electrode, and thermally connected to the first heat release region and the second heat release region.

Abstract: A light source apparatus includes: a first light source; a second light source configured to emit light having a dimming resolution lower than a dimming resolution of the first light source; a holder configured to hold the first light source and the second light source on a first surface of the holder; a substrate provided to face a second surface of the holder, the second surface being different from the first surface, and a circuit configured to control driving of the first light source and the second light source being mounted on the substrate; a first wiring configured to electrically connect the first light source and the substrate; and a second wiring configured to electrically connect the second light source and the substrate, wherein a length of the first wiring is shorter than a length of the second wiring.

Abstract: A shape measuring apparatus includes a cylindrical flexible body and a bend detection sensor. The sensor includes an optical fiber extending along the flexible body, a detection target to vary characteristics of detection light guided through the optical fiber in accordance with a curvature of the optical fiber, and a light detection unit to detect the detection light. The shape measuring apparatus also includes a shape calculating device to calculate a bend shape of the flexible body, based on the variation of the characteristics of the detection light, a cylindrical sheathing member sheathing a part of the optical fiber in the flexible body, and a hard distal member provided at a distal end of the flexible body and holding a distal end of the sheathing member.

Abstract: A light source device includes: a first light emitter configured to emit first light; a second light emitter configured to emit second light having an identical color component to the first light; and an illumination controller configured to cause, after causing the first light emitter to emit the first light, the second light emitter to emit the second light according to a set light amount in a state in which the first light emitter is caused to emit the first light.

Abstract: A shape detection device includes a flexible insertion section, a curved-shape detection sensor and a flexible exterior tube member arranged in the insertion section. The sensor includes an optical fiber, one or more detecting parts to change characteristics of light propagated by the optical fiber in accordance with a curved shape of the optical fiber, and a light detector. The flexible exterior tube member is arranged in the insertion section to include at least part of the optical fiber, and configured to be curved into a similar shape to the curved shape of the insertion section. The curved-shape detection sensor is partly held and fixed to at least one of the exterior tube member and a distal hold member provided at the distal end of the insertion section.

Abstract: An illuminating device includes: a semiconductor light source; a temperature control unit disposed on the light source for controlling a temperature of the light source to a desired temperature; a dew condensation determination unit for determining whether dew condensation may occur based on at least a temperature associated with the illuminating device and an ambient environment condition of the illuminating device; and a temperature control mode selection control unit for selecting, as a temperature control mode of the temperature control unit, a dew condensation suppression mode in which the temperature control unit has a temperature higher than a predetermined temperature and equal to or less than an upper limit of a usable temperature of the light source, based on priority items of operational control of the illuminating device and characteristics of the light source, to temperature-control the temperature control unit, when the determination unit determines that dew condensation may occur.

Abstract: An illuminating device includes: a semiconductor light source; a temperature control unit disposed on the light source for controlling a temperature of the light source to a desired temperature; a dew condensation determination unit for determining whether dew condensation may occur based on at least a temperature associated with the illuminating device and an ambient environment condition of the illuminating device; and a temperature control mode selection control unit for selecting, as a temperature control mode of the temperature control unit, a dew condensation suppression mode in which the temperature control unit has a temperature higher than a predetermined temperature and equal to or less than an upper limit of a usable temperature of the light source, based on priority items of operational control of the illuminating device and characteristics of the light source, to temperature-control the temperature control unit, when the determination unit determines that dew condensation may occur.

Abstract: An endoscope apparatus includes an endoscope including a flexible insertion tube and a curved-shape detection sensor. The curved-shape detection sensor includes an optical fiber for propagating detection light and a sensing part provided in at least a part of the optical fiber. The curved-shape detection sensor detects a curved shape of the insertion tube based on a change of characteristics of the detection light after passing the sensing part made in accordance with a change in a curved shape of the optical fiber when the optical fiber is curved. The optical fiber is arranged on a curve axis of the insertion tube defined when the insertion tube is curved in a predetermined curve direction, or in a proximity region of the curve axis.

Abstract: A shape sensor comprises a shape sensor main body which comprises an optical fiber capable, a detection object section, and a light detecting section to detect the detection light and which is capable of measuring a shape of a measurement target object by utilizing a change in characteristics of the light detected through the detection object section in accordance with a change in curvature of the optical fiber when the optical fiber curves; and a curving direction regulating section which is provided on at least a part of the optical fiber along an optical axis thereof and regulates a curvable direction of the optical fiber to a desired direction; wherein the curving direction regulating section is a core member which is disposed in at least a part of the shape sensor main body along the light propagating direction of the optical fiber and whose main curving direction is regulated.

Abstract: A shape measuring apparatus includes a cylindrical flexible body and a bend detection sensor. The sensor includes an optical fiber extending along the flexible body, a detection target to vary characteristics of detection light guided through the optical fiber in accordance with a curvature of the optical fiber, and a light detection unit to detect the detection light. The shape measuring apparatus also includes a shape calculating device to calculate a bend shape of the flexible body, based on the variation of the characteristics of the detection light, a cylindrical sheathing member sheathing a part of the optical fiber in the flexible body, and a hard distal member provided at a distal end of the flexible body and holding a distal end of the sheathing member.

Abstract: A bending apparatus includes a shape sensor including a light source, an optical fiber, a detecting part, and a light receiver. The shape sensor utilizes a variation in optical characteristics, which is detected by the detecting part in accordance with a variation of curvature of the optical fiber when the optical fiber is bent. The shape sensor is freely bendable in any direction and having directivity in detection sensitivity for a bending direction. A bending direction restriction mechanism is combined with the shape sensor and has bending directivity including such a property of ease in bending that bending is easy in at least a specific direction other than a direction of a center line, and such a property of difficulty in bending that bending is difficult in directions other than the specific direction.

Abstract: A shape detection device includes a flexible insertion section, a curved-shape detection sensor and a flexible exterior tube member arranged in the insertion section. The sensor includes an optical fiber, one or more detecting parts to change characteristics of light propagated by the optical fiber in accordance with a curved shape of the optical fiber, and a light detector. The flexible exterior tube member is arranged in the insertion section to include at least part of the optical fiber, and configured to be curved into a similar shape to the curved shape of the insertion section. The curved-shape detection sensor is partly held and fixed to at least one of the exterior tube member and a distal hold member provided at the distal end of the insertion section.

Abstract: An endoscope apparatus includes an endoscope including a flexible insertion tube and a curved-shape detection sensor. The sensor includes an optical fiber that transmits detection light and a sensing part provided in at least a part of the optical fiber, and detects a curved shape of the insertion tube based on a change in characteristics of the detection light passed through the sensing part in accordance with a change in the curved shape of the optical fiber when the optical fiber curves. Apart of the optical fiber or a part of a guide member through which the optical fiber is passed is held to a component having greater torsion stiffness than any other component constituting the insertion tube.

Abstract: An endoscope apparatus includes an endoscope including a flexible insertion tube and a curved-shape detection sensor. The curved-shape detection sensor includes an optical fiber for propagating detection light and a sensing part provided in at least a part of the optical fiber. The curved-shape detection sensor detects a curved shape of the insertion tube based on a change of characteristics of the detection light after passing the sensing part made in accordance with a change in a curved shape of the optical fiber when the optical fiber is curved. The optical fiber is arranged on a curve axis of the insertion tube defined when the insertion tube is curved in a predetermined curve direction, or in a proximity region of the curve axis.

Abstract: A shape sensor comprises a shape sensor main body which comprises an optical fiber capable, a detection object section, and a light detecting section to detect the detection light and which is capable of measuring a shape of a measurement target object by utilizing a change in characteristics of the light detected through the detection object section in accordance with a change in curvature of the optical fiber when the optical fiber curves; and a curving direction regulating section which is provided on at least a part of the optical fiber along an optical axis thereof and regulates a curvable direction of the optical fiber to a desired direction; wherein the curving direction regulating section is a core member which is disposed in at least a part of the shape sensor main body along the light propagating direction of the optical fiber and whose main curving direction is regulated.

Abstract: A curved shape sensor to detect a curved shape of a measured object includes a light source to emit detection light, an optical fiber to guide the detection light, a detection part provided at a portion of the optical fiber, a rotation suppressing member fixed to the optical fiber, and a light detection unit to detect the detection light traveling through the optical fiber. The measured object includes a tubular member having flexibility so as to be curved, and an incorporation member located inside the tubular member. The detection part changes characteristics of the detection light in accordance with a change in a curvature of the optical fiber. The rotation suppressing member is located within a space defined by the tubular and incorporation members with being in contact with them, so as to suppress rotation of the optical fiber.

Abstract: A bending apparatus includes a shape sensor including a light source, an optical fiber, a detecting part, and a light receiver. The shape sensor utilizes a variation in optical characteristics, which is detected by the detecting part in accordance with a variation of curvature of the optical fiber when the optical fiber is bent. The shape sensor is freely bendable in any direction and having directivity in detection sensitivity for a bending direction. A bending direction restriction mechanism is combined with the shape sensor and has bending directivity including such a property of ease in bending that bending is easy in at least a specific direction other than a direction of a center line, and such a property of difficulty in bending that bending is difficult in directions other than the specific direction.

Abstract: An illumination device includes an optical fiber holder configured to hold an optical fiber, a phosphor holder configured to hold a phosphor and faces the optical fiber holder, and a bonding material configured to intervene between the optical fiber holder and the phosphor holder to bond them. The illumination device includes adjustment guide members configured to intervene between the optical fiber holder and the phosphor holder, relatively positionally adjust the optical fiber holder and the phosphor holder so as to arrange an optical axis of the optical fiber and an optical axis of the phosphor on one line, and configured to prevent the optical fiber holder and the phosphor holder from tilting when the bonding material is cured.

Abstract: An illumination device includes an optical fiber holder configured to hold an optical fiber, a phosphor holder configured to hold a phosphor and faces the optical fiber holder, and a bonding material configured to intervene between the optical fiber holder and the phosphor holder to bond them. The illumination device includes adjustment guide members configured to intervene between the optical fiber holder and the phosphor holder, relatively positionally adjust the optical fiber holder and the phosphor holder so as to arrange an optical axis of the optical fiber and an optical axis of the phosphor on one line, and configured to prevent the optical fiber holder and the phosphor holder from tilting when the bonding material is cured.

Abstract: An airtight apparatus includes a package and a lid. The lid is bonded to the package and defines an airtight space, together with the package. The lid includes an optical window which allows the passage of optical signals, a holding part which holds the optical window, and a deformable part which is formed on an outer circumferential edge of the holding part and which is able to deform when applied with a load smaller than a load that deforms the holding part.