Forming device for forming optical glasses
First Claim
1. A forming device for forming a glass blank into a lens, comprising:
- at least one lower mold unit including a first forming face, and a first abutment face;
at least one upper mold unit including a second forming face to confront said first forming face, and a second abutment face;
a sleeve member mountable detachably between said lower and upper mold units, said sleeve member having at least one sleeve wall defining a slot, said slot including a first slot section with a diameter smaller than an outer diameter of the glass blank, and a second slot section connected to said first slot section and having a diameter substantially equal to the outer diameter of the glass blank, the sleeve wall including a third abutment face to abut against said first abutment face, a fourth abutment face to abut against said second abutment face, a first shoulder face formed between said first and second slot sections and adapted to support the glass blank, and a second shoulder face formed around said second slot section above said first shoulder face and adapted to support the lens, wherein, when said sleeve member is assembled with said lower mold unit, said first abutment face abuts against said third abutment face, and said first forming face extends into said slot to a height higher than said second shoulder face.
1 Assignment
0 Petitions
Accused Products
Abstract
A forming device for forming a glass blank into a lens, includes lower and upper mold units, and a sleeve member removably mountable between the lower and upper mold units to hold the glass blank. The sleeve member has a sleeve wall defining a slot which includes a first slot section smaller in diameter than the glass blank, and a second slot section substantially equal in diameter to the glass blank. The sleeve wall has a first shoulder face formed between the first and second slot sections to support the glass blank, and a second shoulder face formed around the second slot section to support the lens. The second slot section serves to align the glass blank with the lower and upper mold units.
-
Citations
13 Claims
-
1. A forming device for forming a glass blank into a lens, comprising:
-
at least one lower mold unit including a first forming face, and a first abutment face;
at least one upper mold unit including a second forming face to confront said first forming face, and a second abutment face;
a sleeve member mountable detachably between said lower and upper mold units, said sleeve member having at least one sleeve wall defining a slot, said slot including a first slot section with a diameter smaller than an outer diameter of the glass blank, and a second slot section connected to said first slot section and having a diameter substantially equal to the outer diameter of the glass blank, the sleeve wall including a third abutment face to abut against said first abutment face, a fourth abutment face to abut against said second abutment face, a first shoulder face formed between said first and second slot sections and adapted to support the glass blank, and a second shoulder face formed around said second slot section above said first shoulder face and adapted to support the lens, wherein, when said sleeve member is assembled with said lower mold unit, said first abutment face abuts against said third abutment face, and said first forming face extends into said slot to a height higher than said second shoulder face. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A forming unit for forming a glass blank into a lens, each of the glass blank and the lens having a top face, and a bottom face which has a peripheral bottom end, the forming unit comprising:
-
a lower mold unit including a first forming face adapted to press the bottom face of the glass blank;
an upper mold unit including a second forming face adapted to press the top face of the glass blank; and
a sleeve member mountable between said lower and upper mold units and having a sleeve wall extending around said first and second forming faces, wherein said sleeve wall has a support face provided around said first forming face and adapted to support solely the peripheral bottom end of the lens after the glass blank is formed into the lens. - View Dependent Claims (11, 13)
-
-
12. A forming unit for forming a glass blank into a lens, comprising:
-
a lower mold unit including a first forming face;
an upper mold unit including a second forming face; and
a sleeve member mountable detachably between said lower and upper mold units and having-a sleeve wall extending around said first and second forming faces, said sleeve wall having a first support face adapted to support the glass blank, and a second support face adapted to support the lens.
-
Specification