Abstract: To provide an optical function module in which an optical functional part may easily and rapidly be displaced in a position where the optical functional part work exactly and parts may easily be exchanged and reused, an arrangement unit (105) provided on a substrate (104) with a recess portion and a holder base engaged exactly with the recess portion for disposing an optical functional part (124) so as to exactly work on a light flux (106) between collimators (101) and (101′).

Abstract: An ultrasonic motor with increased output power per unit volume is provided by simultaneously driving all of a plurality of polarized segments of a piezoelectric element having a circular disk shape and divided into a multiple of four polarized segments in a circumferential direction. Projections are provided at upper faces of the polarized segments of the piezoelectric element and spaced apart by an odd number of polarized segments. Polarities of adjacent polarized segments are the same and polarities of adjacent pairs are reverse to each other. A first polarized segment group comprises every other polarized segment and a second polarized segment group comprises the remaining polarized segments. By selecting whether phases of alternating voltages supplied to the first and second polarized segment groups are the same or are 180 degrees out of phase, the direction of the motor is determined.

Abstract: A lumbar support device provided within a seat back of an automotive seat, which comprises a support wire having a lumbar support plate for supporting the lumbar part of an occupant on the seat, the support wire being mounted on the back frame of the seat back with such an arrangement that one end of the support wire is secured by a securing support member oriented in a direction intersecting that of a load applied to the support wire while the other end of the support wire is secured by another securing support member oriented in a direction intersecting that of an up-and-down adjustment of the support wire.

Abstract: An improved lumbar support device for use in a seat back of a vehicle seat is disclosed in which upper and lower lumbar plates are mounted in two stages independent of each other and each of the lumbar plates is connected via a connecting member to an arm engageable with a polyhedral cam, whereby the above-mentioned upper and lower lumbar plates can be moved and operated independently of each other by rotating the polyhedral cam by means of rotation of a handle shaft.