Optical code reader

Claim 2

An optical code reader comprising: an optical member having a flat mirror 8 formed on one end of a trans­parent cylindrical member forming mirror face toward inside of said transparent cylindrical member, a first light converging means 9 formed on a central portion of the other end of said transparent cylindrical member, a ring-shaped transparent portion 10 formed on a peripheral portion of said first light converging means 9, and a second light converging means 11 formed on side face of said transparent cylindrical member, a light emitting device 3 for emitting light toward said flat mirror 8 interiorly of said transparent cylindrical member, and a light receiving device 2 placed interiorly of said transparent cylindrical member for receiving light reflected by a code irradiated by said light through said first light converging means.

Claim 3

An optical code reader in accordance with claim 1, wherein said first light converging means is a convex lens.

Claim 4

An optical code reader in accordance with claim 1, wherein said second light converging means 11 is an elliptical mirror.

Claim 5

An optical code reader comprising: an optical member having a flat mirror 31 formed on one end of a trans­parent cylindrical member 1A having a flange 32 on mid portion thereof, forming mirror face toward inside of said transparent cylindrical member 1A, a first light converging means 9 formed on a central portion of the other end of said transparent cylindrical member 1, a ring-shaped transparent portion 10 disposed on a peripheral portion of said first light converging means 9, a ring-shaped flat mirror 33 formed on a peripheral portion of said ring-shaped transparent portion, and a ring-shaped light converging means formed on said flange, a light emitting device 3 for emitting light toward said flat mirror, placed interiorly of said transparent cylindrical member, and a light receiving device 2 for receiving light through said first light converging means, placed interiorly of said transparent cylindrical member.

Claim 6

An optical code reader comprising: an optical member having a flat mirror 31 formed on one end of a trans­parent cylindrical member 1A having a flange 32 on mid portion thereof, forming mirror face toward inside of said transparent cylindrical member 1A, a first light converging means 9 formed on a central portion of the other end of said transparent cylindrical member 1, a ring-shaped transparent portion 10 disposed on a peripheral portion of said first light converging means 9, a ring-shaped flat mirror 33 formed on a peripheral portion of said ring-shaped transparent portion, and a ring-shaped light converging means formed on said flange, a light emitting device 3 for emitting light toward said flat mirror, placed interiorly of said transparent cylindrical member, and a light receiving device 2 for receiving light through said first light converging means, placed interiorly of said transparent cylindrical member.

Claim 7

An optical code reader in accordance with claim 4, wherein said first light converging means 9 is a convex lens.

Claim 8

An optical code reader in accordance with claim 4, wherein said ring-shaped light converging means 34 is a mirror of partial elliptical face having a ring-shaped reflecting surface facing interiorly of said transparent cylindrical member.

Claim 9

An optical code reader in acordance with claim 1 or 4, wherein a light interrupting member 7 is placed between said light emitting device 3 and said light receiving device 2.

Claim 10

An optical code reader in accordance with claim 1or 4, wherein said light emitting device 3 is mounted on a surface of a plate-type lead frame 21 and said light receiving device 2 is mounted on the back surface of said lead frame 21.