Abstract: The lens embraces a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, and a well-shaped concavity is implemented in the inside of the lens body, aligned from the bottom surface toward the top surface. The lens body has geometry such as bullet-shape or egg-shape. A ceiling surface of concavity implemented in the lens body serves as a first lens surface, the top surface of the lens body serves as the second lens surface, and inside of the concavity serves as a storing cavity of a light source or a photodetector.

Abstract: The lens embraces a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, and a well-shaped concavity is implemented in the inside of the lens body, aligned from the bottom surface toward the top surface. The lens body has geometry such as bullet-shape or egg-shape. A ceiling surface of concavity implemented in the lens body serves as a first lens surface, the top surface of the lens body serves as the second lens surface, and inside of the concavity serves as a storing cavity of a light source or a photodetector.

Abstract: A first light-emitting unit (11a), a second light-emitting unit (11b), . . . are disposed near a tip vicinity of a spinner cover (1) of a propeller (2). The first light-emitting unit (11a) embraces a first bulk-shaped lens of bullet-like, and a semiconductor light-emitting element is installed in a cavity of the first bulk-shaped lens. The second light-emitting unit (11b) embraces a second bulk-shaped lens of bullet-like, and a semiconductor light-emitting element installed in a cavity of the second bulk-shaped lens. The first light-emitting unit (11a) and the second light-emitting unit (11b) are formed so as to be able to attach to and detach from the spinner cover (1) as an attachment (4) for bird strike protection.

Abstract: The lens embraces a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, and a well-shaped concavity is implemented in the inside of the lens body, aligned from the bottom surface toward the top surface. The lens body has geometry such as bullet-shape or egg-shape. A ceiling surface of concavity implemented in the lens body serves as a first lens surface, the top surface of the lens body serves as the second lens surface, and inside of the concavity serves as a storing cavity of a light source or a photodetector.

Abstract: The lens embraces a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, and a well-shaped concavity is implemented in the inside of the lens body, aligned from the bottom surface toward the top surface. The lens body has geometry such as bullet-shape or egg-shape. A ceiling surface of concavity implemented in the lens body serves as a first lens surface, the top surface of the lens body serves as the second lens surface, and inside of the concavity serves as a storing cavity of a light source or a photodetector.

Abstract: The lens embraces a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, and a well-shaped concavity is implemented in the inside of the lens body, aligned from the bottom surface toward the top surface. The lens body has geometry such as bullet-shape or egg-shape. A ceiling surface of concavity implemented in the lens body serves as a first lens surface, the top surface of the lens body serves as the second lens surface, and inside of the concavity serves as a storing cavity of a light source or a photodetector.

Abstract: A first light-emitting unit (11a), a second light-emitting unit (11b), . . . are disposed near a tip vicinity of a spinner cover (1) of a propeller (2). The first light-emitting unit (11a) embraces a first bulk-shaped lens of bullet-like, and a semiconductor light-emitting element is installed in a cavity of the first bulk-shaped lens. The second light-emitting unit (11b) embraces a second bulk-shaped lens of bullet-like, and a semiconductor light-emitting element installed in a cavity of the second bulk-shaped lens. The first light-emitting unit (11a) and the second light-emitting unit (11b) are formed so as to be able to attach to and detach from the spinner cover (1) as an attachment (4) for bird strike protection.

Abstract: This invention relates to a display apparatus, comprised of: a display portion 11 consisting of a plurality of light-emitting elements (11a) equipped on a substrate so as to form a display region in a predetermined shape; a drive portion (12) that makes each light-emitting element illuminate; a control portion (13) that controls the drive portion; a power supply portion (16) that supplies electric power to the drive portion and the control portion; and a switch portion (17) with the function of turning on and off the power from the power supply portion to the drive portion, and to the control portion, based on operation instructions: having a semi-translucent cover (11c) of ample size to encompass the entire display region of the display portion; having the light-emitting elements of the display portion arranged in such a way that the light can be brightened gradually from one end of the display region toward the other end thereof, either by the increasing intensity of light emission or by the increasing dens

Abstract: A lighting device 10, having a light irradiation portion 11 comprised of light-emitting elements; a freely turnable flexible shaft 12; extendible portions 13 that support the said flexible shaft at the base, house the flexible shaft, and provide a nested housing for each one of the extendible portions within one another; a drive portion 14 that drives the light irradiation portion; a power supply portion 15 that supplies electric power to the drive portion; and a case 16 covering the drive portion at least, which more preferably covers the extendible portions, as well. Moreover, this includes ones having a spring mechanism that allows said extendible portions and said flexible shaft to freely extend, and by the spring mechanism, as the flexible shaft extends, said nested extendible portions can be extended in succession.