An amplitude modulation circuit includes a resonance circuit powered by an oscillator (1) and comprising a power transmission coil (L1) with a first coil portion (L11), a second coil portion (L12), a modulation coil (L2), and a resonance condenser (C1); an...

A non-contact communication coil (14, 33, 41) configured to a non-contact power feeding device (10,30) comprises a power transmission coil (L1, L4), a power receiving coil (L3, L6), and a resonance coil (L2, L5), and the non-contact communication coil (14,...

A non-contact power feeder (100) comprises a plurality of power transmission coils (1) disposed along a disposition surface (21), at least one power receiving device (200) housing a power reception coil (20) and disposed on the disposition surface (21), an...

A head-up display device (100, 100a) comprising a projection unit ((1) configured to project predetermined information on a transparent display panel (2, 2a) by superimposing on a background (400) that is viewed by a user through the transparent display pa...

A projector device includes: a plurality of laser light sources (103 through 105) each of which output light of a different color component; a control unit that controls the intensity of the light output by each of the laser light sources (103 through 105)...

This headup display (1) includes a projection portion projecting prescribed information (61b, 62b) initialized to a first display color on a display board (20) arranged in a user's gaze direction, a detection portion (120) detecting a background color visu...

This electronic device (3) includes a control portion (37) receiving DC power through an AC-DC conversion portion (32a) from an AC power supply and a connection portion (31) connected to an external device (2) in a state where the connection portion can re...