Abstract: Provided is a light source device for a collimator capable of improving an illuminance ratio in an inside of a visible light's radiation field to an outside thereof. The light source device for a collimator includes an LED with a light emitting portion that irradiates visible light and a visible light guide member. The visible light guide member may have a main body, a spacer, and a base. In the main body, a through-hole of a truncated conical shape is formed. The through-hole of a truncated cone shape forms a first opening at a first surface of the main body on a side of the LED and a second opening a second surface of the main body opposite to the first surface. The first opening may be smaller than the second opening. The conical surface of the through-hole having the truncated conical shape is formed as a mirror surface which reflects the visible light irradiated from the LED with high reflectance.

Abstract: Provided is a light source device for a collimator capable of improving an illuminance ratio in an inside of a visible light's radiation field to an outside thereof. The light source device for a collimator includes an LED with a light emitting portion that irradiates visible light and a visible light guide member. The visible light guide member may have a main body, a spacer, and a base. In the main body, a through-hole of a truncated conical shape is formed. The through-hole of a truncated cone shape forms a first opening at a first surface of the main body on a side of the LED and a second opening a second surface of the main body opposite to the first surface. The first opening may be smaller than the second opening. The conical surface of the through-hole having the truncated conical shape is formed as a mirror surface which reflects the visible light irradiated from the LED with high reflectance.

Abstract: The present invention is directed to an image detector having a housing of protrusive sectional shape. A difference in thickness between a central portion and peripheral portions of the housing is made shorter than the length of rubber cushions. A plurality of rubber cushions are attached to two rectangular bottoms of the peripheral portions made thinner than the central portion. Through these rubber cushions, the image detector is fixed to an image detector holder. As a result, the present invention reduces an inconvenience that, when an image detector is fixed to an image detector holder through rubber cushions, the thickness of the image detector including the rubber cushions increases by an amount corresponding to the height of the rubber cushions.

Abstract: To reduce an inconvenience that, when an image detector is fixed to an image detector holder through rubber cushions, the thickness of the image detector including the rubber cushions increases by an amount corresponding to the height of the rubber cushions. An image detector 1 has a housing 2 of protrusive sectional shape. A difference in thickness between a central portion and peripheral portions of the housing 2 is made shorter than the length of rubber cushions 3. A plurality of rubber cushions 3 are attached to two rectangular bottoms of the peripheral portions made thinner than the central portion. Through these rubber cushions 3, the image detector 1 is fixed to an image detector holder 4.