PURPOSE:To miniaturize the measuring apparatus by providing a two-splitting photodetector to a projection part and also providing a beam path converting element for guiding the reflected beam from an object to be measured in the direction of the two-splitting photodetector CONSTITUTION:The reflected beam from an object 1 to be measured is incident to a projector 2 and divided in both of the direction of an LD 5 and the direction of a two-splitting photodetector 15 by the half mirror 16 arranged between a condensing lens 7 and a collimator lens 6 and the reflected beam divided in the direction of the two-splitting photodetector 15 by the half mirror 16 passes through an image forming lens 17 and cut by half by a beam shield plate 18 to irradiate the two-splitting photodetector 15 When the object 1 to be measured approaches a projection part 2 at this time, the quantity of the beam detected by the first beam detection part 15a of the two-splitting photodetector 15 becomes more than that of the second beam detection part 15 thereof and, when said object 1 goes away from the projection part 2, the quantity of the beam detected by the beam detection part 15b becomes much Therefore, even when NEAR and FAR detection regions are not provided to a beam detector 9, the object to be measured outside a measuring range can be detected

Optical displacement measuring apparatus

PROBLEM TO BE SOLVED: To remove a refuse bag full of refuse easily, as well as to give a width to the size of the refuse bag so as not the soil water to stick to the bag, by providing a bag nipper to nip and hold the mouth of the fuse bag hung on the upper part of a rear side frame, and leaving the space between both vertical frames opened. SOLUTION: Both vertical frames 1a of a front side frame 1 are pivoted to the lower part of a rear side frame 3 having a suction cup 2 at the rear side, and a refuse bag A hung to the upper part of the front side frame 1 and the rear side frame 3 is maintained in the opening condition, by folding back the mouth to the outer side, under the condition the front side frame 1 is inclined forward up to the locking position to the rear side frame 3, so as to open in the V-shape. While a bag nipper 4 to nip near the mouth of the refuse bag A and to hold the refuse bag A hung on the upper part of the rear side frame 3, is provided, the space between both vertical frames 1a is left opened. Consequently, the refuse bag A can be set even though it is of a long size or a short size and can prevent the bag from sticking dirt of soil water, and furthermore, it can be removed without being hooked, even though it is full or refuse.

Refuse bag holder

PURPOSE:To enable detection of the direction of an object moves while raising measuring accuracy to more than lambda/2, by making luminous fluxes introduced with first and second reference light waveguides having a specified distance interfere with the luminous flux reflected from the object to be introduced to first and second interference waveguides respectively. CONSTITUTION:A luminous flux from a light source 23 is introduced to an object 34 through a light waveguide 22, the reflected flux thereof is divided on the light waveguide 22 and made to interfere with a reference light introduced with first and second reference light waveguides 26 and 27 respectively by first and second interference waveguides 35 and 36 to be introduced to first and second light receiving elements 37 and 38. An optical path length adjuster 32 provided at a position sandwiching a reference light waveguide 27b varies a refractive index of the reference light waveguide 27b to enable the adjusting of an optical path difference between the first and second reference light waveguides 26 and 27 to lambda/4. An interference light introduced to the first and second interference waveguides 35 and 36 gets bright and dark respectively each time the object 34 moves by lambda/2. The cycle of repeating the brightness and darkness gives rise to a phase difference according to the optical path difference.

Optical ic interferometer

PROBLEM TO BE SOLVED: To solve a problem that a conventional kitchen sink triangular corner on the market is easy to be stained and troublesome to remove dirt.SOLUTION: A garbage storage bag holder for sink in this invention has a main body provided with a notched part acting as a vent hole at the lower part of a cylindrical body, and an U-shaped stop frame. The main body is covered with a draining bag while being folded back, and by pinching the bag with the main body and the stop frame, the draining bag is fixed in a suspended state, so that drips of kitchen garbage of the draining bag are hard to stick to the main body, and cleaning of the main body and the stop frame can be easily finished. When finishing using water in the sink, the main body is put above a scupper of the sink, thereby the sink is not stained. Thereby the sanitary garbage storage bag holder for sink capable of easily finishing cleaning of the sink is provided.SELECTED DRAWING: Figure 1

Garbage storage bag holder for sink

The invention refers to an optical device for heterodyne interferometry, comprising a chip, a beam splitter, a first waveguide arranged on the chip, light propagating in the first waveguide being guided to the beam splitter, a second waveguide arranged on the chip, light propagating in the second waveguide being guided to and/or from the beam splitter, wherein the beam splitter, the first waveguide, and the second waveguide form part of a Michelson interferometer, wherein the first waveguide and the second waveguide at least partially form two arms of the Michelson interferometer, and wherein two further arms of the Michelson interferometer are at least partially arranged outside the chip.

Optical device for heterodyne interferometry

PURPOSE:To make a sensor of longer distance of displacement measurement and available for identification of direction of the displacement, by installing two inclined reflecting surface on the specimen, mans for converting a signal light into parallel beams and phase-shifting means of wave guide light respectively. CONSTITUTION:Asymmetric X dividing type photo-waveguide paths 10, 12 are formed, a beam of light of waveguide paths 14, 24 are reflected as the reference light by reflecting films 5, 6, beams of light of waveguide paths 13, 23 are reflected as a signal beam by a movable mirror 4 provided with two inclined reflecting. Surfaces, and an output beam of intensity depending on a phase difference of the reflecting beam is fed out from waveguide paths 12, 22. As phase-shifting grooves 25 are constructed in the waveguide 24, a phase deviation is created between the output beams of the waveguide paths 12 and 22 enabling identification of the direction of displacement of the mirror 4 and by deviation of the incidence angle theta onto the mirror 4 enables identification of difference of their light paths. A rod lens 3 conducts conversion into parallel orientation of the beams and intensity of light can be maintained constant regardless the displacement of the mirror 4 and the distance of displacement measurement can be increased and the direction of displacement can be identified also.

Yamashita Maki

Papers

Waveguide type photo-displacement sensor