Patent application number | Description | Published |
20080252875 | Laser beam projecting device - A laser beam projecting device, comprising a laser light source for emitting a laser beam, a wavelength selecting film for allowing the laser beam from the laser light source to. pass, and a birefringent optical member arranged on an optical axis closer to an exit side than the wavelength selecting film, wherein the wavelength selecting film is tilted so that an incident angle of the laser beam is in a range of 45° to 80°. | 10-16-2008 |
20090106989 | Laser Surveying system - There are provided a rotary laser projecting device | 04-30-2009 |
20090119050 | Surveying instrument - There are provided a horizontal angle detector for detecting a horizontal angle, an elevation angle detector for detecting an elevation angle, a dynamic displacement detecting means | 05-07-2009 |
20090235543 | Surveying device and surveying system - The present invention provides a surveying device, which comprises rotators | 09-24-2009 |
20090241359 | Surveying device and surveying system - The present invention provides a surveying device, which comprises a light source for emitting a distance measuring light | 10-01-2009 |
20100166433 | Optical signal transfer device - An optical signal transfer device includes a transmitter system and a receiver system for signal transfer between a base unit and a rotary unit. The receiver system includes a natural number n of light receiving portions forming a ring-like light receiving area around the rotary axis and a light reception controller. The transmitter system includes a light emitting portion, an emission controller, and an optical guide which guides a light beam from the light emitting portion to a light emitting area facing the light receiving area. The optical guide guides a light beam to the light emitting area in one of n equally divided areas of a ring-like opposing area which opposes the light receiving area. Therefore, one of the n light receiving portions always face the light emitting area irrespective of rotary position of the receiver system around the rotary axis relative to the transmitter system. | 07-01-2010 |
20100313433 | ROTARY LASER BEAM EMITTER - A rotary laser beam emitter includes a base unit including a reference reflector with a reference reflective face parallel to a reference plane, a rotary element rotatably supported on the base unit around a rotary axis, and a beam emitting unit contained in the rotary element and including a light source and an optical emission system emitting the laser beam from the light source in a direction parallel to the reference plane on the optical axis. When the rotary element is inclined relative to the rotary axis and the emitted laser beam is inclined to the reference plane, the optical emission system emits the laser beam from the light source to the reference reflective face and emit the laser beam reflected by the reference reflective face in a direction inclined to the optical axis of the laser beam so as to neutralize the inclined laser beam. | 12-16-2010 |
20100321673 | ROTARY LASER EMITTING APPARATUS - A rotary laser emitting apparatus includes a rotary body, a foundation configured to rotatably support the rotary body about an axis, a laser light emitting section contained in the rotary body and configured to emit laser light in a direction orthogonal to a rotation axis of the rotary body, a relative slope detecting mechanism configured to detect an amount of deviation of the rotation axis of the rotary body from the axis of the foundation as a relative slope signal, and a transmitting section configured to transmit the relative slope signal detected by the relative slope detecting mechanism. | 12-23-2010 |