Integrated device attached to windshield having sunlight lens portion with a peak adjustment portion

An integrated device, comprising:

• an in-vehicle product fixed to a windshield of a vehicle;
• and
• a sunlight sensor integrated with the in-vehicle product, the sunlight sensor including
• a sunlight detection element that detects a sunlight amount by receiving sunlight entering the windshield, and
• a sunlight lens portion that guides the sunlight entering the windshield over a predetermined elevation angle range into the sunlight detection element such that the sunlight detection element detects a peak of the sunlight amount at a particular angle within the elevation angle range, wherein
• the sunlight lens portion includes a peak adjustment portion that adjusts the sunlight amount to be constant over a prescribed range within the elevation angle range, the prescribed range including the particular angle,
• the sunlight lens portion includes
• a low elevation angle surface for capturing light at low elevation angles within the elevation angle range,
• an opposing surface which is adjacent to the low elevation angle surface and which faces the sunlight detection element, and
• a high elevation angle surface for capturing light at high elevation angles within the elevation angle range, and
• the peak adjustment portion is a reflection surface adjacent to the high elevation angle surface and the opposing surface, the reflection surface being formed such that a portion of the light entering the sunlight lens portion is reflected at the reflection surface and guided into the sunlight detection element, and
• the reflection surface is connected to the opposing surface with an acute angle, and the reflection surface is connected to the high elevation angle surface with an obtuse angle.