Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A photosensor wherein a light projecting portion (3) and a light receiving portion (4) are optically connected thereby to sense the presence of a part (5) to-be-sensed, characterized by a guide path plate (1) in which a plurality of optical guide paths (21, 22, 23) are built, and a plurality of optical guide posts (61, 62, 91, 92, 121, 122, 141, 142) so erected on said guide path plate (1) that one end of each said post (61, 62, ...) joins to the corresponding optical guide path (21, 22, 23) and the other ends of said posts (61, 62, ...) couple to each other through the part (5) to-be-sensed, said light projecting portion (3) being optically connected to one end of at least one (21) of said optical guide paths, and said light receiving portion (4) being optically connected to one end of at least another one (22) of said optical guide paths.
Claim 2
Dependent Claim
153 words
A photosensor wherein a light projecting portion (3) and a light receiving portion (4) are optically connected thereby to sense the presence of a part (5) to-be-sensed, characterized by a guide path plate (1) in which a plurality of optical guide paths (21, 22, 23) are built, and a plurality of optical guide posts (61, 62, 91, 92, 121, 122, 141, 142) so erected on said guide path plate (1) that one end of each said post (61, 62, ...) joins to the corresponding optical guide path (21, 22, 23) and the other ends of said posts (61, 62, ...) couple to each other through the part (5) to-be-sensed, said light projecting portion (3) being optically connected to one end of at least one (21) of said optical guide paths, and said light receiving portion (4) being optically connected to one end of at least another one (22) of said optical guide paths.
Claim 3
Dependent Claim
36 words
The photosensor of Claim 1, wherein said optical guide post (61, 62, 91, 92) is a rod lens at least one end of which is provided with a reflector (71, 72, 81, 82). (Fig. 2, 3)
Claim 4
Dependent Claim
28 words
The photosensor of Claim 1 or 2, wherein said optical guide post (91, 92) is a transparent body both ends of which are cut obliquely. (Fig. 4, 5)
Claim 5
Dependent Claim
41 words
The photosensor of Claim 3, wherein the two ends of said optical guide post (91, 92) are cut obliquely at 45° and so oriented that the optical axis of entrance and the optical axis of exit intersect orthogonally. (Fig. 4, 5)
Claim 6
Dependent Claim
36 words
The photosensor of any of Claims 1 to 4, wherein said optical guide post (91, 92) is formed with condensing lenses (101, 102, 111, 112) at entrance and exit ports by extrusion molding (Fig. 4, 5)
Claim 7
Dependent Claim
45 words
The photosensor of Claim 1, wherein said optical guide post (121, 122) is made of a rod lens which is curved and formed so as to lead light from said optical guide path (21, 22) to the exterior of said guide path plate (1).(Fig. 6)
Claim 8
Dependent Claim
40 words
The photosensor of Claim 1, wherein said optical guide post (141, 142) is made of a second guide path plate which derives light in said optical guide path (21, 22) to the exterior of said guide path plate (1).(Fig. 7)