Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
A pyroelectric device comprising: a stem having a pyroelectric member including electrodes formed on the upper and lower surfaces thereof for detecting infrared rays and a printed board mounted thereon, said printed board having an electric circuit for outputting the infrared rays detected by said pyroelectric member as an electric signal; a can having a window hole and fixed to said stem in an airtight state; and a filter for sealing said window hole, each of said electrodes formed on the upper and lower surfaces of said pyroelectric member including an absorbing electrode portion composed of an infrared ray absorbing material and formed as a thin layer and a drawing electrode portion communicating with said absorbing electrode portion and formed as a layer thicker than that of said absorbing electrode portion.
Claim 2
Dependent Claim
124 words
A pyroelectric device comprising: a stem having a pyroelectric member including electrodes formed on the upper and lower surfaces thereof for detecting infrared rays and a printed board mounted thereon, said printed board having an electric circuit for outputting the infrared rays detected by said pyroelectric member as an electric signal; a can having a window hole and fixed to said stem in an airtight state; and a filter for sealing said window hole, each of said electrodes formed on the upper and lower surfaces of said pyroelectric member including an absorbing electrode portion composed of an infrared ray absorbing material formed as a thin layer and a drawing electrode portion communicating with said absorbing electrode portion and composed of a corrosion resistive material.
Claim 3
Dependent Claim
30 words
A pyroelectric device according to claim 1 or 2, wherein said can and said stem are composed of alloy having the component of Fe: 55%, Ni: 28%, and Co: 17%.
Claim 4
Dependent Claim
94 words
A pyroelectric device comprising: a stem having a pyroelectric member including electrodes formed on the upper and lower surfaces thereof for detecting infrared rays and a printed board mounted thereon, said printed board having an electric circuit for outputting the infrared rays detected by said pyroelectric member as an electric signal; a can having a window hole and fixed to said stem in an airtight state; and a filter for sealing said window hole, said can and said stem being composed of alloy having the component of Fe: 55%, Ni: 28%, and Co: 17%.
Claim 5
Dependent Claim
54 words
A pyroelectric device according to claim 1, 2, 3 or 4, wherein when said window hole is sealed by said filter, said filter is abutted against the circumference of said window hole through a fusing agent and said fusing agent is melted and then solidified to sealedly fix said filer to said window hole.
Claim 6
Dependent Claim
100 words
A pyroelectric device according to claim 1, 2. 3, 4 or 5, wherein terminal pins stand on said stem in communication with the outside and inside of said pyroelectric device to support said printed board and take out said electric signal output from the electric circuit of said printed board, said terminal pins having projecting portions radially projecting at the extreme ends thereof on the inner side of said pyroelectric device, whereby when said extreme ends are inserted into pin holes formed in said printed board, said projecting portions are contacted with said printed board to flatly support the same.