Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
308 words
An opto-electronic scan head for point-by-point and line-by-line scanning of originals arranged on an original carrier, comprising: (a) a scanning system comprising a scanner lens (11), a diaphragm (13) and at least one opto-electronic transducer (14) which are arranged along the optical axis (12) of said scanner lens (11); (b) a housing portion (9) facing toward said original carrier (1) displaceable along said optical axis (12), said scanner lens (11) mounted in said housing portion (9); (c) a housing member (8) mounted away from said original carrier (1) and stationary with respect to said optical axis (12), said diaphragm (13) and said opto-electronic transducer (14) mounted on said housing member, (d) first and second guide rods (34, 35) extending in the direction of said optical axis (12) parallel to one another and secured to said displaceable housing portion (9) and said guid rods projecting into said stationary housing member (8); (e) a friction bearing (37, 38, 39) for sliding and play-free bearing said first guide rod (34) and a roller bearing (40, 41) for guiding said second guide rod (35) and said friction bearing and said roller bearing mounted in said stationary housing member (8); (f) a toothed rack (43) extending in the direction of said optical axis (12) and secured to said first guide rod (34) which is guided in said friction bearing (37, 38, 39); (g) a pinion (44), rotatably supported perpendicular to said optical axis (12) and engageable with said toothed rack (42); and (b) a shaft (45) rotatably mounted in said stationary housing member (8) said pinion (44) mounted on one end of said shaft and a knob (46) mounted on the other end of said shaft, whereby a corresponding variation of the distance of said scanner lens (11) from the surface of said originals carrier (1) is effected by turning said knob (46).
Claim 2
Dependent Claim
308 words
An opto-electronic scan head for point-by-point and line-by-line scanning of originals arranged on an original carrier, comprising: (a) a scanning system comprising a scanner lens (11), a diaphragm (13) and at least one opto-electronic transducer (14) which are arranged along the optical axis (12) of said scanner lens (11); (b) a housing portion (9) facing toward said original carrier (1) displaceable along said optical axis (12), said scanner lens (11) mounted in said housing portion (9); (c) a housing member (8) mounted away from said original carrier (1) and stationary with respect to said optical axis (12), said diaphragm (13) and said opto-electronic transducer (14) mounted on said housing member, (d) first and second guide rods (34, 35) extending in the direction of said optical axis (12) parallel to one another and secured to said displaceable housing portion (9) and said guid rods projecting into said stationary housing member (8); (e) a friction bearing (37, 38, 39) for sliding and play-free bearing said first guide rod (34) and a roller bearing (40, 41) for guiding said second guide rod (35) and said friction bearing and said roller bearing mounted in said stationary housing member (8); (f) a toothed rack (43) extending in the direction of said optical axis (12) and secured to said first guide rod (34) which is guided in said friction bearing (37, 38, 39); (g) a pinion (44), rotatably supported perpendicular to said optical axis (12) and engageable with said toothed rack (42); and (b) a shaft (45) rotatably mounted in said stationary housing member (8) said pinion (44) mounted on one end of said shaft and a knob (46) mounted on the other end of said shaft, whereby a corresponding variation of the distance of said scanner lens (11) from the surface of said originals carrier (1) is effected by turning said knob (46).
Claim 3
Dependent Claim
54 words
A scan head according to claim 1, wherein said friction bearing (37, 38, 39) is formed of a guide channel formed in said stationary housing member (8) and said guide channel is clad with a foil and of leaf springs (38, 39) for holding said guide rods (34, 35) in said guide channel (37).
Claim 4
Dependent Claim
66 words
A scan head according to claims 1 or 2, wherein for scanning opaque originals, at least one light source (29) is secured to said displaceable housing portion (9) and is aligned relative to said scanner lens (11) such that the intersection of the optical axis (30) of said light source (29) with said optical axis (12) lies in the sharpness region of said scanner lens (11).
Claim 5
Dependent Claim
35 words
A scan head according to claims 1 or 2, wherein a mirror (23) is attached above the scanner lens (11) to the side of said displaceable housing portion (9) facing toward said originals carrier (1).