摘要:
A circuit module includes: a lighting control circuit that controls lighting of a semiconductor light emitting element; a first heat radiating member on which the lighting control circuit is mounted; a second heat radiating member that is separated from the first heat radiating member and has a surface on which the semiconductor light emitting element is mounted; and a connecting mechanism having both a housing that connects the first heat radiating member and the second heat radiating member together and a conductive portion that transmits a signal from the lighting control circuit to the semiconductor light emitting element. The housing is formed of a material having a coefficient of thermal conductivity lower than those of the first heat radiating member and the second heat radiating member.
摘要:
In a circuit module, a supporting member has both an element mounting surface on which a package can be mounted and a circuit mounting surface on which a lighting control circuit that controls lighting of a semiconductor light emitting element can be mounted. The lighting control circuit is mounted on the circuit mounting surface. The circuit mounting surface is formed so as to be orthogonalized or inclined with respect to the element mounting surface. Thereby, the length in the longitudinal direction of the circuit module can be made smaller in comparison with that of a circuit module in which a circuit mounting surface and an element mounting surface are formed on the same plane.
摘要:
In an automotive headlamp, a light-emitting module is configured such that a light-emitting element and a control circuit unit for controlling the lighting of the light-emitting element are structured integrally with each other. A control circuit unit in a position anterior to the light-emitting element in a lamp unit is located below a shade section so that the control circuit unit can be clear of the path of light used to form a low beam light distribution pattern of the light emitted by the light-emitting element. In this setting, the light-emitting element is so located that a main optical axis Ax2 is perpendicular respect to an optical axis Ax1 of the lamp unit and that a light-emitting portion of the light-emitting element protrudes higher than the control circuit unit in the direction of the main optical axis Ax2.
摘要:
The present invention provides a cemented optical element including: a first optical element having a concave surface; a second optical element having a convex surface facing the concave surface; and an adhesive layer for bonding the convex surface to the concave surface. The concave surface and the convex surface are curved surfaces parallel to each other, with curvature centers thereof coinciding with each other on an optical axis. Thereby, the cemented optical element with high shape accuracy can be obtained.
摘要:
A diffractive optical element includes a diffractive surface. Raised portions and recessed portions are alternately arranged on the diffractive surface. A shape of the valley bottoms of the recessed portions varies according to regions of the diffractive surface.
摘要:
A cemented optical element includes a convex lens and a concave lens. The convex lens has a first convex surface and a second convex surface that are rotationally symmetric with respect to an optical axis. The convex lens has an edge with a thickness of substantially zero. The concave lens has a concave surface bonded to the first convex surface of the convex lens. Preferably, the peripheral portion of the concave lens extends radially outwardly beyond the convex lens to the extent that it is located within an area surrounded by an extension zone of the second convex surface of the convex lens.
摘要:
In a bonded optical element, a second optical element is bonded to a first optical element by forming the second optical element by heating and pressing against the first optical element a second optical element material. The second optical element includes an element body part and a contact part extending from the element body part to be in contact with the outer peripheral face of the fist optical element.
摘要:
A diffractive optical element includes a diffractive surface. Raised portions and recessed portions are alternately arranged on the diffractive surface. The valley bottoms of the recessed portions are formed to have a chamfered shape.
摘要:
A temperature sensor including: a temperature sensing element (102) having a temperature sensing unit (103) and a pair of device electrode wires (104); a sheath member (106) having a sheath wire (108) connected at a junction (110) to at least one of the device electrode wires and a sheath outer pipe (107) retaining the sheath wire in an insulating material (114); an inner tube (112) which has a bottomed cylindrical shape; and a cylindrical outer tube (120) having an open end, covering the inner tube such that the open end is located at a front end side of the junction and in a region to the rear end side of or aligned with the front end of the inner tube, and being spaced from the inner tube at the front end side of the junction.
摘要:
An optical element includes: an optically functional part having a first convex surface and a second convex surface intersecting with an optical axis and facing opposite to each other; and an outer peripheral part provided around the optically functional part, the outer peripheral part having a first outer peripheral surface extending from a periphery of the first convex surface and a second outer peripheral surface extending from a periphery of the second convex surface. The first outer peripheral surface and the second outer peripheral surface each are formed to be tapered. A thickness of the outer peripheral part in an optical axis direction is reduced toward a direction moving away from the optical axis.